summaryrefslogtreecommitdiff
path: root/drivers/tty
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/amiserial.c29
-rw-r--r--drivers/tty/bfin_jtag_comm.c2
-rw-r--r--drivers/tty/cyclades.c2
-rw-r--r--drivers/tty/ehv_bytechan.c1
-rw-r--r--drivers/tty/goldfish.c1
-rw-r--r--drivers/tty/hvc/hvc_console.c2
-rw-r--r--drivers/tty/hvc/hvc_dcc.c21
-rw-r--r--drivers/tty/hvc/hvc_iucv.c3
-rw-r--r--drivers/tty/hvc/hvc_opal.c4
-rw-r--r--drivers/tty/hvc/hvc_vio.c5
-rw-r--r--drivers/tty/hvc/hvc_xen.c19
-rw-r--r--drivers/tty/hvc/hvsi_lib.c26
-rw-r--r--drivers/tty/ipwireless/tty.c1
-rw-r--r--drivers/tty/metag_da.c2
-rw-r--r--drivers/tty/n_gsm.c63
-rw-r--r--drivers/tty/n_r3964.c2
-rw-r--r--drivers/tty/n_tty.c153
-rw-r--r--drivers/tty/nozomi.c6
-rw-r--r--drivers/tty/rocket.c2
-rw-r--r--drivers/tty/serial/8250/8250_core.c6
-rw-r--r--drivers/tty/serial/8250/8250_dw.c85
-rw-r--r--drivers/tty/serial/8250/8250_em.c7
-rw-r--r--drivers/tty/serial/8250/8250_pci.c356
-rw-r--r--drivers/tty/serial/8250/8250_pnp.c1
-rw-r--r--drivers/tty/serial/8250/Kconfig2
-rw-r--r--drivers/tty/serial/8250/serial_cs.c1
-rw-r--r--drivers/tty/serial/Kconfig24
-rw-r--r--drivers/tty/serial/Makefile1
-rw-r--r--drivers/tty/serial/amba-pl010.c18
-rw-r--r--drivers/tty/serial/amba-pl011.c87
-rw-r--r--drivers/tty/serial/arc_uart.c2
-rw-r--r--drivers/tty/serial/atmel_serial.c64
-rw-r--r--drivers/tty/serial/bfin_sport_uart.c11
-rw-r--r--drivers/tty/serial/bfin_uart.c21
-rw-r--r--drivers/tty/serial/clps711x.c456
-rw-r--r--drivers/tty/serial/cpm_uart/cpm_uart_core.c4
-rw-r--r--drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c2
-rw-r--r--drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c1
-rw-r--r--drivers/tty/serial/crisv10.c2
-rw-r--r--drivers/tty/serial/ifx6x60.c2
-rw-r--r--drivers/tty/serial/imx.c90
-rw-r--r--drivers/tty/serial/ip22zilog.c2
-rw-r--r--drivers/tty/serial/kgdb_nmi.c1
-rw-r--r--drivers/tty/serial/max310x.c2
-rw-r--r--drivers/tty/serial/mfd.c13
-rw-r--r--drivers/tty/serial/mpc52xx_uart.c5
-rw-r--r--drivers/tty/serial/mpsc.c2
-rw-r--r--drivers/tty/serial/mrst_max3110.c45
-rw-r--r--drivers/tty/serial/mxs-auart.c18
-rw-r--r--drivers/tty/serial/of_serial.c1
-rw-r--r--drivers/tty/serial/omap-serial.c141
-rw-r--r--drivers/tty/serial/pch_uart.c6
-rw-r--r--drivers/tty/serial/pmac_zilog.c7
-rw-r--r--drivers/tty/serial/rp2.c2
-rw-r--r--drivers/tty/serial/sa1100.c5
-rw-r--r--drivers/tty/serial/samsung.c22
-rw-r--r--drivers/tty/serial/samsung.h2
-rw-r--r--drivers/tty/serial/sc26xx.c749
-rw-r--r--drivers/tty/serial/sccnxp.c1
-rw-r--r--drivers/tty/serial/serial-tegra.c2
-rw-r--r--drivers/tty/serial/serial_core.c8
-rw-r--r--drivers/tty/serial/serial_txx9.c2
-rw-r--r--drivers/tty/serial/sh-sci.c2
-rw-r--r--drivers/tty/serial/sirfsoc_uart.c50
-rw-r--r--drivers/tty/serial/sirfsoc_uart.h12
-rw-r--r--drivers/tty/serial/sunsab.c2
-rw-r--r--drivers/tty/serial/sunsu.c2
-rw-r--r--drivers/tty/serial/sunzilog.c6
-rw-r--r--drivers/tty/serial/ucc_uart.c4
-rw-r--r--drivers/tty/serial/xilinx_uartps.c553
-rw-r--r--drivers/tty/synclink.c4
-rw-r--r--drivers/tty/synclink_gt.c4
-rw-r--r--drivers/tty/synclinkmp.c4
-rw-r--r--drivers/tty/sysrq.c2
-rw-r--r--drivers/tty/tty_buffer.c111
-rw-r--r--drivers/tty/tty_io.c1
-rw-r--r--drivers/tty/tty_ldisc.c1
-rw-r--r--drivers/tty/tty_ldsem.c16
-rw-r--r--drivers/tty/tty_port.c11
-rw-r--r--drivers/tty/vt/vt.c33
80 files changed, 1859 insertions, 1582 deletions
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 2b86f8e0fb58..979e7c3ea2cb 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1248,6 +1248,8 @@ static int rs_ioctl(struct tty_struct *tty,
struct async_icount cprev, cnow; /* kernel counter temps */
void __user *argp = (void __user *)arg;
unsigned long flags;
+ DEFINE_WAIT(wait);
+ int ret;
if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
return -ENODEV;
@@ -1288,25 +1290,33 @@ static int rs_ioctl(struct tty_struct *tty,
cprev = info->icount;
local_irq_restore(flags);
while (1) {
- interruptible_sleep_on(&info->tport.delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
+ prepare_to_wait(&info->tport.delta_msr_wait,
+ &wait, TASK_INTERRUPTIBLE);
local_irq_save(flags);
cnow = info->icount; /* atomic copy */
local_irq_restore(flags);
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
+ cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
+ ret = -EIO; /* no change => error */
+ break;
+ }
if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
- return 0;
+ ret = 0;
+ break;
+ }
+ schedule();
+ /* see if a signal did it */
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
}
cprev = cnow;
}
- /* NOTREACHED */
+ finish_wait(&info->tport.delta_msr_wait, &wait);
+ return ret;
case TIOCSERGWILD:
case TIOCSERSWILD:
@@ -1855,6 +1865,9 @@ static struct console sercons = {
*/
static int __init amiserial_console_init(void)
{
+ if (!MACH_IS_AMIGA)
+ return -ENODEV;
+
register_console(&sercons);
return 0;
}
diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
index a93a424873fa..8096fcbe2dc1 100644
--- a/drivers/tty/bfin_jtag_comm.c
+++ b/drivers/tty/bfin_jtag_comm.c
@@ -349,7 +349,7 @@ bfin_jc_early_write(struct console *co, const char *buf, unsigned int count)
bfin_jc_straight_buffer_write(buf, count);
}
-static struct __initdata console bfin_jc_early_console = {
+static struct console bfin_jc_early_console __initdata = {
.name = "early_BFJC",
.write = bfin_jc_early_write,
.flags = CON_ANYTIME | CON_PRINTBUFFER,
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index 33f83fee9fae..a57bb5ab761c 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -2709,6 +2709,8 @@ cy_ioctl(struct tty_struct *tty,
break;
#ifndef CONFIG_CYZ_INTR
case CYZSETPOLLCYCLE:
+ if (arg > LONG_MAX / HZ)
+ return -ENODEV;
cyz_polling_cycle = (arg * HZ) / 1000;
break;
case CYZGETPOLLCYCLE:
diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c
index 9bffcec5ad82..0419b69e270f 100644
--- a/drivers/tty/ehv_bytechan.c
+++ b/drivers/tty/ehv_bytechan.c
@@ -32,6 +32,7 @@
#include <linux/poll.h>
#include <asm/epapr_hcalls.h>
#include <linux/of.h>
+#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/cdev.h>
#include <linux/console.h>
diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
index f17d2e4ee2ca..75dc9d25f326 100644
--- a/drivers/tty/goldfish.c
+++ b/drivers/tty/goldfish.c
@@ -14,7 +14,6 @@
*/
#include <linux/console.h>
-#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/tty.h>
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 9eba119bcdd3..50b46881b6ca 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -788,7 +788,7 @@ static int hvc_tiocmset(struct tty_struct *tty,
}
#ifdef CONFIG_CONSOLE_POLL
-int hvc_poll_init(struct tty_driver *driver, int line, char *options)
+static int hvc_poll_init(struct tty_driver *driver, int line, char *options)
{
return 0;
}
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c
index 44fbebab5075..3502a7bbb69e 100644
--- a/drivers/tty/hvc/hvc_dcc.c
+++ b/drivers/tty/hvc/hvc_dcc.c
@@ -86,6 +86,21 @@ static int hvc_dcc_get_chars(uint32_t vt, char *buf, int count)
return i;
}
+static bool hvc_dcc_check(void)
+{
+ unsigned long time = jiffies + (HZ / 10);
+
+ /* Write a test character to check if it is handled */
+ __dcc_putchar('\n');
+
+ while (time_is_after_jiffies(time)) {
+ if (!(__dcc_getstatus() & DCC_STATUS_TX))
+ return true;
+ }
+
+ return false;
+}
+
static const struct hv_ops hvc_dcc_get_put_ops = {
.get_chars = hvc_dcc_get_chars,
.put_chars = hvc_dcc_put_chars,
@@ -93,6 +108,9 @@ static const struct hv_ops hvc_dcc_get_put_ops = {
static int __init hvc_dcc_console_init(void)
{
+ if (!hvc_dcc_check())
+ return -ENODEV;
+
hvc_instantiate(0, 0, &hvc_dcc_get_put_ops);
return 0;
}
@@ -100,6 +118,9 @@ console_initcall(hvc_dcc_console_init);
static int __init hvc_dcc_init(void)
{
+ if (!hvc_dcc_check())
+ return -ENODEV;
+
hvc_alloc(0, 0, &hvc_dcc_get_put_ops, 128);
return 0;
}
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index fd17a9b804b8..db19a38c8c69 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -1354,8 +1354,7 @@ out_error_memory:
mempool_destroy(hvc_iucv_mempool);
kmem_cache_destroy(hvc_iucv_buffer_cache);
out_error:
- if (hvc_iucv_filter)
- kfree(hvc_iucv_filter);
+ kfree(hvc_iucv_filter);
hvc_iucv_devices = 0; /* ensure that we do not provide any device */
return rc;
}
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index cd69b48f6dfd..6496872e2e47 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -329,7 +329,7 @@ static void udbg_init_opal_common(void)
void __init hvc_opal_init_early(void)
{
struct device_node *stdout_node = NULL;
- const u32 *termno;
+ const __be32 *termno;
const char *name = NULL;
const struct hv_ops *ops;
u32 index;
@@ -371,7 +371,7 @@ void __init hvc_opal_init_early(void)
if (!stdout_node)
return;
termno = of_get_property(stdout_node, "reg", NULL);
- index = termno ? *termno : 0;
+ index = termno ? be32_to_cpup(termno) : 0;
if (index >= MAX_NR_HVC_CONSOLES)
return;
hvc_opal_privs[index] = &hvc_opal_boot_priv;
diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c
index c791b18cdd08..b594abfbf21e 100644
--- a/drivers/tty/hvc/hvc_vio.c
+++ b/drivers/tty/hvc/hvc_vio.c
@@ -48,6 +48,7 @@
#include <asm/prom.h>
#include <asm/hvsi.h>
#include <asm/udbg.h>
+#include <asm/machdep.h>
#include "hvc_console.h"
@@ -457,7 +458,9 @@ void __init hvc_vio_init_early(void)
if (hvterm_priv0.proto == HV_PROTOCOL_HVSI)
goto out;
#endif
- add_preferred_console("hvc", 0, NULL);
+ /* Check whether the user has requested a different console. */
+ if (!strstr(cmd_line, "console="))
+ add_preferred_console("hvc", 0, NULL);
hvc_instantiate(0, 0, ops);
out:
of_node_put(stdout_node);
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index c193af6a628f..636c9baad7a5 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -183,7 +183,7 @@ static int dom0_write_console(uint32_t vtermno, const char *str, int len)
{
int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str);
if (rc < 0)
- return 0;
+ return rc;
return len;
}
@@ -642,7 +642,22 @@ struct console xenboot_console = {
void xen_raw_console_write(const char *str)
{
- dom0_write_console(0, str, strlen(str));
+ ssize_t len = strlen(str);
+ int rc = 0;
+
+ if (xen_domain()) {
+ rc = dom0_write_console(0, str, len);
+#ifdef CONFIG_X86
+ if (rc == -ENOSYS && xen_hvm_domain())
+ goto outb_print;
+
+ } else if (xen_cpuid_base()) {
+ int i;
+outb_print:
+ for (i = 0; i < len; i++)
+ outb(str[i], 0xe9);
+#endif
+ }
}
void xen_raw_printk(const char *fmt, ...)
diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c
index ac2767100df5..7ae6c293e518 100644
--- a/drivers/tty/hvc/hvsi_lib.c
+++ b/drivers/tty/hvc/hvsi_lib.c
@@ -1,5 +1,4 @@
#include <linux/types.h>
-#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/console.h>
@@ -9,7 +8,7 @@
static int hvsi_send_packet(struct hvsi_priv *pv, struct hvsi_header *packet)
{
- packet->seqno = atomic_inc_return(&pv->seqno);
+ packet->seqno = cpu_to_be16(atomic_inc_return(&pv->seqno));
/* Assumes that always succeeds, works in practice */
return pv->put_chars(pv->termno, (char *)packet, packet->len);
@@ -28,7 +27,7 @@ static void hvsi_start_handshake(struct hvsi_priv *pv)
/* Send version query */
q.hdr.type = VS_QUERY_PACKET_HEADER;
q.hdr.len = sizeof(struct hvsi_query);
- q.verb = VSV_SEND_VERSION_NUMBER;
+ q.verb = cpu_to_be16(VSV_SEND_VERSION_NUMBER);
hvsi_send_packet(pv, &q.hdr);
}
@@ -40,7 +39,7 @@ static int hvsi_send_close(struct hvsi_priv *pv)
ctrl.hdr.type = VS_CONTROL_PACKET_HEADER;
ctrl.hdr.len = sizeof(struct hvsi_control);
- ctrl.verb = VSV_CLOSE_PROTOCOL;
+ ctrl.verb = cpu_to_be16(VSV_CLOSE_PROTOCOL);
return hvsi_send_packet(pv, &ctrl.hdr);
}
@@ -69,14 +68,14 @@ static void hvsi_got_control(struct hvsi_priv *pv)
{
struct hvsi_control *pkt = (struct hvsi_control *)pv->inbuf;
- switch (pkt->verb) {
+ switch (be16_to_cpu(pkt->verb)) {
case VSV_CLOSE_PROTOCOL:
/* We restart the handshaking */
hvsi_start_handshake(pv);
break;
case VSV_MODEM_CTL_UPDATE:
/* Transition of carrier detect */
- hvsi_cd_change(pv, pkt->word & HVSI_TSCD);
+ hvsi_cd_change(pv, be32_to_cpu(pkt->word) & HVSI_TSCD);
break;
}
}
@@ -87,7 +86,7 @@ static void hvsi_got_query(struct hvsi_priv *pv)
struct hvsi_query_response r;
/* We only handle version queries */
- if (pkt->verb != VSV_SEND_VERSION_NUMBER)
+ if (be16_to_cpu(pkt->verb) != VSV_SEND_VERSION_NUMBER)
return;
pr_devel("HVSI@%x: Got version query, sending response...\n",
@@ -96,7 +95,7 @@ static void hvsi_got_query(struct hvsi_priv *pv)
/* Send version response */
r.hdr.type = VS_QUERY_RESPONSE_PACKET_HEADER;
r.hdr.len = sizeof(struct hvsi_query_response);
- r.verb = VSV_SEND_VERSION_NUMBER;
+ r.verb = cpu_to_be16(VSV_SEND_VERSION_NUMBER);
r.u.version = HVSI_VERSION;
r.query_seqno = pkt->hdr.seqno;
hvsi_send_packet(pv, &r.hdr);
@@ -112,7 +111,7 @@ static void hvsi_got_response(struct hvsi_priv *pv)
switch(r->verb) {
case VSV_SEND_MODEM_CTL_STATUS:
- hvsi_cd_change(pv, r->u.mctrl_word & HVSI_TSCD);
+ hvsi_cd_change(pv, be32_to_cpu(r->u.mctrl_word) & HVSI_TSCD);
pv->mctrl_update = 1;
break;
}
@@ -265,8 +264,7 @@ int hvsilib_read_mctrl(struct hvsi_priv *pv)
pv->mctrl_update = 0;
q.hdr.type = VS_QUERY_PACKET_HEADER;
q.hdr.len = sizeof(struct hvsi_query);
- q.hdr.seqno = atomic_inc_return(&pv->seqno);
- q.verb = VSV_SEND_MODEM_CTL_STATUS;
+ q.verb = cpu_to_be16(VSV_SEND_MODEM_CTL_STATUS);
rc = hvsi_send_packet(pv, &q.hdr);
if (rc <= 0) {
pr_devel("HVSI@%x: Error %d...\n", pv->termno, rc);
@@ -304,9 +302,9 @@ int hvsilib_write_mctrl(struct hvsi_priv *pv, int dtr)
ctrl.hdr.type = VS_CONTROL_PACKET_HEADER,
ctrl.hdr.len = sizeof(struct hvsi_control);
- ctrl.verb = VSV_SET_MODEM_CTL;
- ctrl.mask = HVSI_TSDTR;
- ctrl.word = dtr ? HVSI_TSDTR : 0;
+ ctrl.verb = cpu_to_be16(VSV_SET_MODEM_CTL);
+ ctrl.mask = cpu_to_be32(HVSI_TSDTR);
+ ctrl.word = cpu_to_be32(dtr ? HVSI_TSDTR : 0);
return hvsi_send_packet(pv, &ctrl.hdr);
}
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
index 8fd72ff9436e..ebd5bff0f5c1 100644
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -15,7 +15,6 @@
* Copyright (C) 2007 David Sterba
*/
-#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
diff --git a/drivers/tty/metag_da.c b/drivers/tty/metag_da.c
index 0e888621f484..7332e2ca4615 100644
--- a/drivers/tty/metag_da.c
+++ b/drivers/tty/metag_da.c
@@ -495,7 +495,7 @@ static int dashtty_write(struct tty_struct *tty, const unsigned char *buf,
count = dport->xmit_cnt;
/* xmit buffer no longer empty? */
if (count)
- INIT_COMPLETION(dport->xmit_empty);
+ reinit_completion(&dport->xmit_empty);
mutex_unlock(&dport->xmit_lock);
if (total) {
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index c0f76da55304..f34461c5f14e 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -194,6 +194,7 @@ struct gsm_control {
struct gsm_mux {
struct tty_struct *tty; /* The tty our ldisc is bound to */
spinlock_t lock;
+ struct mutex mutex;
unsigned int num;
struct kref ref;
@@ -1704,11 +1705,8 @@ static void gsm_dlci_release(struct gsm_dlci *dlci)
gsm_destroy_network(dlci);
mutex_unlock(&dlci->mutex);
- /* tty_vhangup needs the tty_lock, so unlock and
- relock after doing the hangup. */
- tty_unlock(tty);
tty_vhangup(tty);
- tty_lock(tty);
+
tty_port_tty_set(&dlci->port, NULL);
tty_kref_put(tty);
}
@@ -2019,7 +2017,7 @@ static void gsm_error(struct gsm_mux *gsm,
* and then shut down each device hanging up the channels as we go.
*/
-void gsm_cleanup_mux(struct gsm_mux *gsm)
+static void gsm_cleanup_mux(struct gsm_mux *gsm)
{
int i;
struct gsm_dlci *dlci = gsm->dlci[0];
@@ -2054,15 +2052,16 @@ void gsm_cleanup_mux(struct gsm_mux *gsm)
dlci->state == DLCI_CLOSED);
}
/* Free up any link layer users */
+ mutex_lock(&gsm->mutex);
for (i = 0; i < NUM_DLCI; i++)
if (gsm->dlci[i])
gsm_dlci_release(gsm->dlci[i]);
+ mutex_unlock(&gsm->mutex);
/* Now wipe the queues */
list_for_each_entry_safe(txq, ntxq, &gsm->tx_list, list)
kfree(txq);
INIT_LIST_HEAD(&gsm->tx_list);
}
-EXPORT_SYMBOL_GPL(gsm_cleanup_mux);
/**
* gsm_activate_mux - generic GSM setup
@@ -2073,7 +2072,7 @@ EXPORT_SYMBOL_GPL(gsm_cleanup_mux);
* finally kick off connecting to DLCI 0 on the modem.
*/
-int gsm_activate_mux(struct gsm_mux *gsm)
+static int gsm_activate_mux(struct gsm_mux *gsm)
{
struct gsm_dlci *dlci;
int i = 0;
@@ -2109,7 +2108,6 @@ int gsm_activate_mux(struct gsm_mux *gsm)
gsm->dead = 0; /* Tty opens are now permissible */
return 0;
}
-EXPORT_SYMBOL_GPL(gsm_activate_mux);
/**
* gsm_free_mux - free up a mux
@@ -2117,13 +2115,12 @@ EXPORT_SYMBOL_GPL(gsm_activate_mux);
*
* Dispose of allocated resources for a dead mux
*/
-void gsm_free_mux(struct gsm_mux *gsm)
+static void gsm_free_mux(struct gsm_mux *gsm)
{
kfree(gsm->txframe);
kfree(gsm->buf);
kfree(gsm);
}
-EXPORT_SYMBOL_GPL(gsm_free_mux);
/**
* gsm_free_muxr - free up a mux
@@ -2153,7 +2150,7 @@ static inline void mux_put(struct gsm_mux *gsm)
* Creates a new mux ready for activation.
*/
-struct gsm_mux *gsm_alloc_mux(void)
+static struct gsm_mux *gsm_alloc_mux(void)
{
struct gsm_mux *gsm = kzalloc(sizeof(struct gsm_mux), GFP_KERNEL);
if (gsm == NULL)
@@ -2170,6 +2167,7 @@ struct gsm_mux *gsm_alloc_mux(void)
return NULL;
}
spin_lock_init(&gsm->lock);
+ mutex_init(&gsm->mutex);
kref_init(&gsm->ref);
INIT_LIST_HEAD(&gsm->tx_list);
@@ -2185,7 +2183,6 @@ struct gsm_mux *gsm_alloc_mux(void)
return gsm;
}
-EXPORT_SYMBOL_GPL(gsm_alloc_mux);
/**
* gsmld_output - write to link
@@ -2269,14 +2266,15 @@ static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,
char *f;
int i;
char buf[64];
- char flags;
+ char flags = TTY_NORMAL;
if (debug & 4)
print_hex_dump_bytes("gsmld_receive: ", DUMP_PREFIX_OFFSET,
cp, count);
for (i = count, dp = cp, f = fp; i; i--, dp++) {
- flags = *f++;
+ if (f)
+ flags = *f++;
switch (flags) {
case TTY_NORMAL:
gsm->receive(gsm, *dp);
@@ -2711,7 +2709,7 @@ static void gsm_mux_rx_netchar(struct gsm_dlci *dlci,
return;
}
-int gsm_change_mtu(struct net_device *net, int new_mtu)
+static int gsm_change_mtu(struct net_device *net, int new_mtu)
{
struct gsm_mux_net *mux_net = (struct gsm_mux_net *)netdev_priv(net);
if ((new_mtu < 8) || (new_mtu > mux_net->dlci->gsm->mtu))
@@ -2909,23 +2907,33 @@ static int gsmtty_install(struct tty_driver *driver, struct tty_struct *tty)
This is ok from a locking
perspective as we don't have to worry about this
if DLCI0 is lost */
- if (gsm->dlci[0] && gsm->dlci[0]->state != DLCI_OPEN)
+ mutex_lock(&gsm->mutex);
+ if (gsm->dlci[0] && gsm->dlci[0]->state != DLCI_OPEN) {
+ mutex_unlock(&gsm->mutex);
return -EL2NSYNC;
+ }
dlci = gsm->dlci[line];
if (dlci == NULL) {
alloc = true;
dlci = gsm_dlci_alloc(gsm, line);
}
- if (dlci == NULL)
+ if (dlci == NULL) {
+ mutex_unlock(&gsm->mutex);
return -ENOMEM;
+ }
ret = tty_port_install(&dlci->port, driver, tty);
if (ret) {
if (alloc)
dlci_put(dlci);
+ mutex_unlock(&gsm->mutex);
return ret;
}
+ dlci_get(dlci);
+ dlci_get(gsm->dlci[0]);
+ mux_get(gsm);
tty->driver_data = dlci;
+ mutex_unlock(&gsm->mutex);
return 0;
}
@@ -2936,9 +2944,6 @@ static int gsmtty_open(struct tty_struct *tty, struct file *filp)
struct tty_port *port = &dlci->port;
port->count++;
- dlci_get(dlci);
- dlci_get(dlci->gsm->dlci[0]);
- mux_get(dlci->gsm);
tty_port_tty_set(port, tty);
dlci->modem_rx = 0;
@@ -2965,7 +2970,7 @@ static void gsmtty_close(struct tty_struct *tty, struct file *filp)
mutex_unlock(&dlci->mutex);
gsm = dlci->gsm;
if (tty_port_close_start(&dlci->port, tty, filp) == 0)
- goto out;
+ return;
gsm_dlci_begin_close(dlci);
if (test_bit(ASYNCB_INITIALIZED, &dlci->port.flags)) {
if (C_HUPCL(tty))
@@ -2973,10 +2978,7 @@ static void gsmtty_close(struct tty_struct *tty, struct file *filp)
}
tty_port_close_end(&dlci->port, tty);
tty_port_tty_set(&dlci->port, NULL);
-out:
- dlci_put(dlci);
- dlci_put(gsm->dlci[0]);
- mux_put(gsm);
+ return;
}
static void gsmtty_hangup(struct tty_struct *tty)
@@ -3153,6 +3155,16 @@ static int gsmtty_break_ctl(struct tty_struct *tty, int state)
return gsmtty_modem_update(dlci, encode);
}
+static void gsmtty_remove(struct tty_driver *driver, struct tty_struct *tty)
+{
+ struct gsm_dlci *dlci = tty->driver_data;
+ struct gsm_mux *gsm = dlci->gsm;
+
+ dlci_put(dlci);
+ dlci_put(gsm->dlci[0]);
+ mux_put(gsm);
+ driver->ttys[tty->index] = NULL;
+}
/* Virtual ttys for the demux */
static const struct tty_operations gsmtty_ops = {
@@ -3172,6 +3184,7 @@ static const struct tty_operations gsmtty_ops = {
.tiocmget = gsmtty_tiocmget,
.tiocmset = gsmtty_tiocmset,
.break_ctl = gsmtty_break_ctl,
+ .remove = gsmtty_remove,
};
diff --git a/drivers/tty/n_r3964.c b/drivers/tty/n_r3964.c
index 1e6405070ce6..8b157d68a03e 100644
--- a/drivers/tty/n_r3964.c
+++ b/drivers/tty/n_r3964.c
@@ -1244,7 +1244,7 @@ static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
{
struct r3964_info *pInfo = tty->disc_data;
const unsigned char *p;
- char *f, flags = 0;
+ char *f, flags = TTY_NORMAL;
int i;
for (i = count, p = cp, f = fp; i; i--, p++) {
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 7a744b69c3d1..cb8017aa4434 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -93,6 +93,7 @@ struct n_tty_data {
size_t canon_head;
size_t echo_head;
size_t echo_commit;
+ size_t echo_mark;
DECLARE_BITMAP(char_map, 256);
/* private to n_tty_receive_overrun (single-threaded) */
@@ -104,6 +105,7 @@ struct n_tty_data {
/* must hold exclusive termios_rwsem to reset these */
unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1;
+ unsigned char push:1;
/* shared by producer and consumer */
char read_buf[N_TTY_BUF_SIZE];
@@ -274,7 +276,8 @@ static void n_tty_check_unthrottle(struct tty_struct *tty)
return;
n_tty_set_room(tty);
n_tty_write_wakeup(tty->link);
- wake_up_interruptible_poll(&tty->link->write_wait, POLLOUT);
+ if (waitqueue_active(&tty->link->write_wait))
+ wake_up_interruptible_poll(&tty->link->write_wait, POLLOUT);
return;
}
@@ -336,10 +339,12 @@ static void reset_buffer_flags(struct n_tty_data *ldata)
{
ldata->read_head = ldata->canon_head = ldata->read_tail = 0;
ldata->echo_head = ldata->echo_tail = ldata->echo_commit = 0;
+ ldata->echo_mark = 0;
ldata->line_start = 0;
ldata->erasing = 0;
bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE);
+ ldata->push = 0;
}
static void n_tty_packet_mode_flush(struct tty_struct *tty)
@@ -349,7 +354,8 @@ static void n_tty_packet_mode_flush(struct tty_struct *tty)
spin_lock_irqsave(&tty->ctrl_lock, flags);
if (tty->link->packet) {
tty->ctrl_status |= TIOCPKT_FLUSHREAD;
- wake_up_interruptible(&tty->link->read_wait);
+ if (waitqueue_active(&tty->link->read_wait))
+ wake_up_interruptible(&tty->link->read_wait);
}
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
}
@@ -767,8 +773,8 @@ static size_t __process_echoes(struct tty_struct *tty)
* of echo overrun before the next commit), then discard enough
* data at the tail to prevent a subsequent overrun */
while (ldata->echo_commit - tail >= ECHO_DISCARD_WATERMARK) {
- if (echo_buf(ldata, tail == ECHO_OP_START)) {
- if (echo_buf(ldata, tail) == ECHO_OP_ERASE_TAB)
+ if (echo_buf(ldata, tail) == ECHO_OP_START) {
+ if (echo_buf(ldata, tail + 1) == ECHO_OP_ERASE_TAB)
tail += 3;
else
tail += 2;
@@ -787,6 +793,7 @@ static void commit_echoes(struct tty_struct *tty)
size_t head;
head = ldata->echo_head;
+ ldata->echo_mark = head;
old = ldata->echo_commit - ldata->echo_tail;
/* Process committed echoes if the accumulated # of bytes
@@ -810,10 +817,12 @@ static void process_echoes(struct tty_struct *tty)
struct n_tty_data *ldata = tty->disc_data;
size_t echoed;
- if (!L_ECHO(tty) || ldata->echo_commit == ldata->echo_tail)
+ if ((!L_ECHO(tty) && !L_ECHONL(tty)) ||
+ ldata->echo_mark == ldata->echo_tail)
return;
mutex_lock(&ldata->output_lock);
+ ldata->echo_commit = ldata->echo_mark;
echoed = __process_echoes(tty);
mutex_unlock(&ldata->output_lock);
@@ -821,11 +830,13 @@ static void process_echoes(struct tty_struct *tty)
tty->ops->flush_chars(tty);
}
+/* NB: echo_mark and echo_head should be equivalent here */
static void flush_echoes(struct tty_struct *tty)
{
struct n_tty_data *ldata = tty->disc_data;
- if (!L_ECHO(tty) || ldata->echo_commit == ldata->echo_head)
+ if ((!L_ECHO(tty) && !L_ECHONL(tty)) ||
+ ldata->echo_commit == ldata->echo_head)
return;
mutex_lock(&ldata->output_lock);
@@ -1155,7 +1166,8 @@ static void n_tty_receive_break(struct tty_struct *tty)
put_tty_queue('\0', ldata);
}
put_tty_queue('\0', ldata);
- wake_up_interruptible(&tty->read_wait);
+ if (waitqueue_active(&tty->read_wait))
+ wake_up_interruptible(&tty->read_wait);
}
/**
@@ -1213,7 +1225,8 @@ static void n_tty_receive_parity_error(struct tty_struct *tty, unsigned char c)
put_tty_queue('\0', ldata);
else
put_tty_queue(c, ldata);
- wake_up_interruptible(&tty->read_wait);
+ if (waitqueue_active(&tty->read_wait))
+ wake_up_interruptible(&tty->read_wait);
}
static void
@@ -1257,7 +1270,6 @@ static int
n_tty_receive_char_special(struct tty_struct *tty, unsigned char c)
{
struct n_tty_data *ldata = tty->disc_data;
- int parmrk;
if (I_IXON(tty)) {
if (c == START_CHAR(tty)) {
@@ -1342,8 +1354,6 @@ n_tty_receive_char_special(struct tty_struct *tty, unsigned char c)
}
if ((c == EOL_CHAR(tty)) ||
(c == EOL2_CHAR(tty) && L_IEXTEN(tty))) {
- parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty))
- ? 1 : 0;
/*
* XXX are EOL_CHAR and EOL2_CHAR echoed?!?
*/
@@ -1358,7 +1368,7 @@ n_tty_receive_char_special(struct tty_struct *tty, unsigned char c)
* XXX does PARMRK doubling happen for
* EOL_CHAR and EOL2_CHAR?
*/
- if (parmrk)
+ if (c == (unsigned char) '\377' && I_PARMRK(tty))
put_tty_queue(c, ldata);
handle_newline:
@@ -1372,7 +1382,6 @@ handle_newline:
}
}
- parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty)) ? 1 : 0;
if (L_ECHO(tty)) {
finish_erasing(ldata);
if (c == '\n')
@@ -1386,7 +1395,8 @@ handle_newline:
commit_echoes(tty);
}
- if (parmrk)
+ /* PARMRK doubling check */
+ if (c == (unsigned char) '\377' && I_PARMRK(tty))
put_tty_queue(c, ldata);
put_tty_queue(c, ldata);
@@ -1397,7 +1407,6 @@ static inline void
n_tty_receive_char_inline(struct tty_struct *tty, unsigned char c)
{
struct n_tty_data *ldata = tty->disc_data;
- int parmrk;
if (tty->stopped && !tty->flow_stopped && I_IXON(tty) && I_IXANY(tty)) {
start_tty(tty);
@@ -1411,13 +1420,13 @@ n_tty_receive_char_inline(struct tty_struct *tty, unsigned char c)
echo_char(c, tty);
commit_echoes(tty);
}
- parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty)) ? 1 : 0;
- if (parmrk)
+ /* PARMRK doubling check */
+ if (c == (unsigned char) '\377' && I_PARMRK(tty))
put_tty_queue(c, ldata);
put_tty_queue(c, ldata);
}
-static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
+static void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
{
n_tty_receive_char_inline(tty, c);
}
@@ -1442,8 +1451,7 @@ n_tty_receive_char_fast(struct tty_struct *tty, unsigned char c)
put_tty_queue(c, ldata);
}
-static inline void
-n_tty_receive_char_closing(struct tty_struct *tty, unsigned char c)
+static void n_tty_receive_char_closing(struct tty_struct *tty, unsigned char c)
{
if (I_ISTRIP(tty))
c &= 0x7f;
@@ -1674,32 +1682,9 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,
}
}
-static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp,
- char *fp, int count)
-{
- int room, n;
-
- down_read(&tty->termios_rwsem);
-
- while (1) {
- room = receive_room(tty);
- n = min(count, room);
- if (!n)
- break;
- __receive_buf(tty, cp, fp, n);
- cp += n;
- if (fp)
- fp += n;
- count -= n;
- }
-
- tty->receive_room = room;
- n_tty_check_throttle(tty);
- up_read(&tty->termios_rwsem);
-}
-
-static int n_tty_receive_buf2(struct tty_struct *tty, const unsigned char *cp,
- char *fp, int count)
+static int
+n_tty_receive_buf_common(struct tty_struct *tty, const unsigned char *cp,
+ char *fp, int count, int flow)
{
struct n_tty_data *ldata = tty->disc_data;
int room, n, rcvd = 0;
@@ -1710,7 +1695,7 @@ static int n_tty_receive_buf2(struct tty_struct *tty, const unsigned char *cp,
room = receive_room(tty);
n = min(count, room);
if (!n) {
- if (!room)
+ if (flow && !room)
ldata->no_room = 1;
break;
}
@@ -1729,6 +1714,18 @@ static int n_tty_receive_buf2(struct tty_struct *tty, const unsigned char *cp,
return rcvd;
}
+static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp,
+ char *fp, int count)
+{
+ n_tty_receive_buf_common(tty, cp, fp, count, 0);
+}
+
+static int n_tty_receive_buf2(struct tty_struct *tty, const unsigned char *cp,
+ char *fp, int count)
+{
+ return n_tty_receive_buf_common(tty, cp, fp, count, 1);
+}
+
int is_ignored(int sig)
{
return (sigismember(&current->blocked, sig) ||
@@ -1752,20 +1749,23 @@ int is_ignored(int sig)
static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
{
struct n_tty_data *ldata = tty->disc_data;
- int canon_change = 1;
- if (old)
- canon_change = (old->c_lflag ^ tty->termios.c_lflag) & ICANON;
- if (canon_change) {
+ if (!old || (old->c_lflag ^ tty->termios.c_lflag) & ICANON) {
bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE);
- ldata->line_start = ldata->canon_head = ldata->read_tail;
+ ldata->line_start = ldata->read_tail;
+ if (!L_ICANON(tty) || !read_cnt(ldata)) {
+ ldata->canon_head = ldata->read_tail;
+ ldata->push = 0;
+ } else {
+ set_bit((ldata->read_head - 1) & (N_TTY_BUF_SIZE - 1),
+ ldata->read_flags);
+ ldata->canon_head = ldata->read_head;
+ ldata->push = 1;
+ }
ldata->erasing = 0;
ldata->lnext = 0;
}
- if (canon_change && !L_ICANON(tty) && read_cnt(ldata))
- wake_up_interruptible(&tty->read_wait);
-
ldata->icanon = (L_ICANON(tty) != 0);
if (I_ISTRIP(tty) || I_IUCLC(tty) || I_IGNCR(tty) ||
@@ -1820,13 +1820,14 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
* Fix tty hang when I_IXON(tty) is cleared, but the tty
* been stopped by STOP_CHAR(tty) before it.
*/
- if (!I_IXON(tty) && old && (old->c_iflag & IXON) && !tty->flow_stopped) {
+ if (!I_IXON(tty) && old && (old->c_iflag & IXON) && !tty->flow_stopped)
start_tty(tty);
- }
/* The termios change make the tty ready for I/O */
- wake_up_interruptible(&tty->write_wait);
- wake_up_interruptible(&tty->read_wait);
+ if (waitqueue_active(&tty->write_wait))
+ wake_up_interruptible(&tty->write_wait);
+ if (waitqueue_active(&tty->read_wait))
+ wake_up_interruptible(&tty->read_wait);
}
/**
@@ -1892,14 +1893,15 @@ err:
return -ENOMEM;
}
-static inline int input_available_p(struct tty_struct *tty, int amt)
+static inline int input_available_p(struct tty_struct *tty, int poll)
{
struct n_tty_data *ldata = tty->disc_data;
+ int amt = poll && !TIME_CHAR(tty) ? MIN_CHAR(tty) : 1;
if (ldata->icanon && !L_EXTPROC(tty)) {
if (ldata->canon_head != ldata->read_tail)
return 1;
- } else if (read_cnt(ldata) >= (amt ? amt : 1))
+ } else if (read_cnt(ldata) >= amt)
return 1;
return 0;
@@ -1965,6 +1967,12 @@ static int copy_from_read_buf(struct tty_struct *tty,
* it copies one line of input up to and including the line-delimiting
* character into the user-space buffer.
*
+ * NB: When termios is changed from non-canonical to canonical mode and
+ * the read buffer contains data, n_tty_set_termios() simulates an EOF
+ * push (as if C-d were input) _without_ the DISABLED_CHAR in the buffer.
+ * This causes data already processed as input to be immediately available
+ * as input although a newline has not been received.
+ *
* Called under the atomic_read_lock mutex
*
* n_tty_read()/consumer path:
@@ -2005,10 +2013,13 @@ static int canon_copy_from_read_buf(struct tty_struct *tty,
found = 1;
size = N_TTY_BUF_SIZE - tail;
- n = (found + eol + size) & (N_TTY_BUF_SIZE - 1);
+ n = eol - tail;
+ if (n > 4096)
+ n += 4096;
+ n += found;
c = n;
- if (found && read_buf(ldata, eol) == __DISABLED_CHAR) {
+ if (found && !ldata->push && read_buf(ldata, eol) == __DISABLED_CHAR) {
n--;
eof_push = !n && ldata->read_tail != ldata->line_start;
}
@@ -2035,7 +2046,10 @@ static int canon_copy_from_read_buf(struct tty_struct *tty,
ldata->read_tail += c;
if (found) {
- ldata->line_start = ldata->read_tail;
+ if (!ldata->push)
+ ldata->line_start = ldata->read_tail;
+ else
+ ldata->push = 0;
tty_audit_push(tty);
}
return eof_push ? -EAGAIN : 0;
@@ -2250,18 +2264,19 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
if (time)
timeout = time;
}
- mutex_unlock(&ldata->atomic_read_lock);
- remove_wait_queue(&tty->read_wait, &wait);
+ n_tty_set_room(tty);
+ up_read(&tty->termios_rwsem);
+ remove_wait_queue(&tty->read_wait, &wait);
if (!waitqueue_active(&tty->read_wait))
ldata->minimum_to_wake = minimum;
+ mutex_unlock(&ldata->atomic_read_lock);
+
__set_current_state(TASK_RUNNING);
if (b - buf)
retval = b - buf;
- n_tty_set_room(tty);
- up_read(&tty->termios_rwsem);
return retval;
}
@@ -2394,7 +2409,7 @@ static unsigned int n_tty_poll(struct tty_struct *tty, struct file *file,
poll_wait(file, &tty->read_wait, wait);
poll_wait(file, &tty->write_wait, wait);
- if (input_available_p(tty, TIME_CHAR(tty) ? 0 : MIN_CHAR(tty)))
+ if (input_available_p(tty, 1))
mask |= POLLIN | POLLRDNORM;
if (tty->packet && tty->link->ctrl_status)
mask |= POLLPRI | POLLIN | POLLRDNORM;
diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c
index d6080c3831ef..cd0429369557 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -959,7 +959,7 @@ static int receive_flow_control(struct nozomi *dc)
dev_err(&dc->pdev->dev,
"ERROR: flow control received for non-existing port\n");
return 0;
- };
+ }
DBG1("0x%04X->0x%04X", *((u16 *)&dc->port[port].ctrl_dl),
*((u16 *)&ctrl_dl));
@@ -1025,7 +1025,7 @@ static enum ctrl_port_type port2ctrl(enum port_type port,
dev_err(&dc->pdev->dev,
"ERROR: send flow control " \
"received for non-existing port\n");
- };
+ }
return CTRL_ERROR;
}
@@ -1805,7 +1805,7 @@ static int ntty_ioctl(struct tty_struct *tty,
default:
DBG1("ERR: 0x%08X, %d", cmd, cmd);
break;
- };
+ }
return rval;
}
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 354564ea47c5..383c4c796637 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -1744,7 +1744,7 @@ static void rp_flush_buffer(struct tty_struct *tty)
#ifdef CONFIG_PCI
-static DEFINE_PCI_DEVICE_TABLE(rocket_pci_ids) = {
+static const struct pci_device_id rocket_pci_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4QUAD) },
{ PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8OCTA) },
{ PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP8OCTA) },
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 570df9d2a5d2..61ecd709a722 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -2322,7 +2322,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) {
fcr = uart_config[port->type].fcr;
- if (baud < 2400 || fifo_bug) {
+ if ((baud < 2400 && !up->dma) || fifo_bug) {
fcr &= ~UART_FCR_TRIGGER_MASK;
fcr |= UART_FCR_TRIGGER_1;
}
@@ -2670,6 +2670,10 @@ static void serial8250_config_port(struct uart_port *port, int flags)
if (port->type == PORT_16550A && port->iotype == UPIO_AU)
up->bugs |= UART_BUG_NOMSR;
+ /* HW bugs may trigger IRQ while IIR == NO_INT */
+ if (port->type == PORT_TEGRA)
+ up->bugs |= UART_BUG_NOMSR;
+
if (port->type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ)
autoconfig_irq(up);
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index daf710f5c3fc..faa64e646100 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -14,7 +14,6 @@
* raised, the LCR needs to be rewritten and the uart status register read.
*/
#include <linux/device.h>
-#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/serial_8250.h>
@@ -56,11 +55,11 @@
struct dw8250_data {
- int last_lcr;
- int last_mcr;
- int line;
- struct clk *clk;
- u8 usr_reg;
+ u8 usr_reg;
+ int last_mcr;
+ int line;
+ struct clk *clk;
+ struct uart_8250_dma dma;
};
static inline int dw8250_modify_msr(struct uart_port *p, int offset, int value)
@@ -76,17 +75,34 @@ static inline int dw8250_modify_msr(struct uart_port *p, int offset, int value)
return value;
}
+static void dw8250_force_idle(struct uart_port *p)
+{
+ serial8250_clear_and_reinit_fifos(container_of
+ (p, struct uart_8250_port, port));
+ (void)p->serial_in(p, UART_RX);
+}
+
static void dw8250_serial_out(struct uart_port *p, int offset, int value)
{
struct dw8250_data *d = p->private_data;
- if (offset == UART_LCR)
- d->last_lcr = value;
-
if (offset == UART_MCR)
d->last_mcr = value;
writeb(value, p->membase + (offset << p->regshift));
+
+ /* Make sure LCR write wasn't ignored */
+ if (offset == UART_LCR) {
+ int tries = 1000;
+ while (tries--) {
+ unsigned int lcr = p->serial_in(p, UART_LCR);
+ if ((value & ~UART_LCR_SPAR) == (lcr & ~UART_LCR_SPAR))
+ return;
+ dw8250_force_idle(p);
+ writeb(value, p->membase + (UART_LCR << p->regshift));
+ }
+ dev_err(p->dev, "Couldn't set LCR to %d\n", value);
+ }
}
static unsigned int dw8250_serial_in(struct uart_port *p, int offset)
@@ -107,13 +123,23 @@ static void dw8250_serial_out32(struct uart_port *p, int offset, int value)
{
struct dw8250_data *d = p->private_data;
- if (offset == UART_LCR)
- d->last_lcr = value;
-
if (offset == UART_MCR)
d->last_mcr = value;
writel(value, p->membase + (offset << p->regshift));
+
+ /* Make sure LCR write wasn't ignored */
+ if (offset == UART_LCR) {
+ int tries = 1000;
+ while (tries--) {
+ unsigned int lcr = p->serial_in(p, UART_LCR);
+ if ((value & ~UART_LCR_SPAR) == (lcr & ~UART_LCR_SPAR))
+ return;
+ dw8250_force_idle(p);
+ writel(value, p->membase + (UART_LCR << p->regshift));
+ }
+ dev_err(p->dev, "Couldn't set LCR to %d\n", value);
+ }
}
static unsigned int dw8250_serial_in32(struct uart_port *p, int offset)
@@ -131,9 +157,8 @@ static int dw8250_handle_irq(struct uart_port *p)
if (serial8250_handle_irq(p, iir)) {
return 1;
} else if ((iir & UART_IIR_BUSY) == UART_IIR_BUSY) {
- /* Clear the USR and write the LCR again. */
+ /* Clear the USR */
(void)p->serial_in(p, d->usr_reg);
- p->serial_out(p, UART_LCR, d->last_lcr);
return 1;
}
@@ -153,6 +178,14 @@ dw8250_do_pm(struct uart_port *port, unsigned int state, unsigned int old)
pm_runtime_put_sync_suspend(port->dev);
}
+static bool dw8250_dma_filter(struct dma_chan *chan, void *param)
+{
+ struct dw8250_data *data = param;
+
+ return chan->chan_id == data->dma.tx_chan_id ||
+ chan->chan_id == data->dma.rx_chan_id;
+}
+
static void dw8250_setup_port(struct uart_8250_port *up)
{
struct uart_port *p = &up->port;
@@ -240,8 +273,8 @@ static int dw8250_probe_of(struct uart_port *p,
return 0;
}
-#ifdef CONFIG_ACPI
-static int dw8250_probe_acpi(struct uart_8250_port *up)
+static int dw8250_probe_acpi(struct uart_8250_port *up,
+ struct dw8250_data *data)
{
const struct acpi_device_id *id;
struct uart_port *p = &up->port;
@@ -260,21 +293,13 @@ static int dw8250_probe_acpi(struct uart_8250_port *up)
if (!p->uartclk)
p->uartclk = (unsigned int)id->driver_data;
- up->dma = devm_kzalloc(p->dev, sizeof(*up->dma), GFP_KERNEL);
- if (!up->dma)
- return -ENOMEM;
+ up->dma = &data->dma;
up->dma->rxconf.src_maxburst = p->fifosize / 4;
up->dma->txconf.dst_maxburst = p->fifosize / 4;
return 0;
}
-#else
-static inline int dw8250_probe_acpi(struct uart_8250_port *up)
-{
- return -ENODEV;
-}
-#endif /* CONFIG_ACPI */
static int dw8250_probe(struct platform_device *pdev)
{
@@ -314,6 +339,12 @@ static int dw8250_probe(struct platform_device *pdev)
uart.port.uartclk = clk_get_rate(data->clk);
}
+ data->dma.rx_chan_id = -1;
+ data->dma.tx_chan_id = -1;
+ data->dma.rx_param = data;
+ data->dma.tx_param = data;
+ data->dma.fn = dw8250_dma_filter;
+
uart.port.iotype = UPIO_MEM;
uart.port.serial_in = dw8250_serial_in;
uart.port.serial_out = dw8250_serial_out;
@@ -324,7 +355,7 @@ static int dw8250_probe(struct platform_device *pdev)
if (err)
return err;
} else if (ACPI_HANDLE(&pdev->dev)) {
- err = dw8250_probe_acpi(&uart);
+ err = dw8250_probe_acpi(&uart, data);
if (err)
return err;
} else {
@@ -417,6 +448,8 @@ MODULE_DEVICE_TABLE(of, dw8250_of_match);
static const struct acpi_device_id dw8250_acpi_match[] = {
{ "INT33C4", 0 },
{ "INT33C5", 0 },
+ { "INT3434", 0 },
+ { "INT3435", 0 },
{ "80860F0A", 0 },
{ },
};
diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c
index 5f3bba12c159..56c87232b6a0 100644
--- a/drivers/tty/serial/8250/8250_em.c
+++ b/drivers/tty/serial/8250/8250_em.c
@@ -18,7 +18,6 @@
*/
#include <linux/device.h>
-#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/serial_8250.h>
@@ -122,7 +121,7 @@ static int serial8250_em_probe(struct platform_device *pdev)
up.port.dev = &pdev->dev;
up.port.private_data = priv;
- clk_enable(priv->sclk);
+ clk_prepare_enable(priv->sclk);
up.port.uartclk = clk_get_rate(priv->sclk);
up.port.iotype = UPIO_MEM32;
@@ -134,7 +133,7 @@ static int serial8250_em_probe(struct platform_device *pdev)
ret = serial8250_register_8250_port(&up);
if (ret < 0) {
dev_err(&pdev->dev, "unable to register 8250 port\n");
- clk_disable(priv->sclk);
+ clk_disable_unprepare(priv->sclk);
return ret;
}
@@ -148,7 +147,7 @@ static int serial8250_em_remove(struct platform_device *pdev)
struct serial8250_em_priv *priv = platform_get_drvdata(pdev);
serial8250_unregister_port(priv->line);
- clk_disable(priv->sclk);
+ clk_disable_unprepare(priv->sclk);
return 0;
}
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index c810da7c7a88..50228eed3b6f 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -9,8 +9,8 @@
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*/
+#undef DEBUG
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/kernel.h>
@@ -27,8 +27,6 @@
#include "8250.h"
-#undef SERIAL_DEBUG_PCI
-
/*
* init function returns:
* > 0 - number of ports
@@ -63,7 +61,7 @@ static int pci_default_setup(struct serial_private*,
static void moan_device(const char *str, struct pci_dev *dev)
{
- printk(KERN_WARNING
+ dev_err(&dev->dev,
"%s: %s\n"
"Please send the output of lspci -vv, this\n"
"message (0x%04x,0x%04x,0x%04x,0x%04x), the\n"
@@ -233,7 +231,7 @@ static int pci_inteli960ni_init(struct pci_dev *dev)
/* is firmware started? */
pci_read_config_dword(dev, 0x44, (void *)&oldval);
if (oldval == 0x00001000L) { /* RESET value */
- printk(KERN_DEBUG "Local i960 firmware missing");
+ dev_dbg(&dev->dev, "Local i960 firmware missing\n");
return -ENODEV;
}
return 0;
@@ -827,7 +825,7 @@ static int pci_netmos_9900_numports(struct pci_dev *dev)
if (sub_serports > 0) {
return sub_serports;
} else {
- printk(KERN_NOTICE "NetMos/Mostech serial driver ignoring port on ambiguous config.\n");
+ dev_err(&dev->dev, "NetMos/Mostech serial driver ignoring port on ambiguous config.\n");
return 0;
}
}
@@ -931,7 +929,7 @@ static int pci_ite887x_init(struct pci_dev *dev)
}
if (!inta_addr[i]) {
- printk(KERN_ERR "ite887x: could not find iobase\n");
+ dev_err(&dev->dev, "ite887x: could not find iobase\n");
return -ENODEV;
}
@@ -1024,9 +1022,9 @@ static int pci_oxsemi_tornado_init(struct pci_dev *dev)
/* Tornado device */
if (deviceID == 0x07000200) {
number_uarts = ioread8(p + 4);
- printk(KERN_DEBUG
+ dev_dbg(&dev->dev,
"%d ports detected on Oxford PCI Express device\n",
- number_uarts);
+ number_uarts);
}
pci_iounmap(dev, p);
return number_uarts;
@@ -1260,10 +1258,10 @@ static int pci_quatech_init(struct pci_dev *dev)
unsigned long base = pci_resource_start(dev, 0);
if (base) {
u32 tmp;
- outl(inl(base + 0x38), base + 0x38);
+ outl(inl(base + 0x38) | 0x00002000, base + 0x38);
tmp = inl(base + 0x3c);
outl(tmp | 0x01000000, base + 0x3c);
- outl(tmp, base + 0x3c);
+ outl(tmp &= ~0x01000000, base + 0x3c);
}
}
return 0;
@@ -1308,6 +1306,29 @@ static int pci_default_setup(struct serial_private *priv,
return setup_port(priv, port, bar, offset, board->reg_shift);
}
+static int pci_pericom_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
+{
+ unsigned int bar, offset = board->first_offset, maxnr;
+
+ bar = FL_GET_BASE(board->flags);
+ if (board->flags & FL_BASE_BARS)
+ bar += idx;
+ else
+ offset += idx * board->uart_offset;
+
+ maxnr = (pci_resource_len(priv->dev, bar) - board->first_offset) >>
+ (board->reg_shift + 3);
+
+ if (board->flags & FL_REGION_SZ_CAP && idx >= maxnr)
+ return 1;
+
+ port->port.uartclk = 14745600;
+
+ return setup_port(priv, port, bar, offset, board->reg_shift);
+}
+
static int
ce4100_serial_setup(struct serial_private *priv,
const struct pciserial_board *board,
@@ -1324,6 +1345,120 @@ ce4100_serial_setup(struct serial_private *priv,
return ret;
}
+#define PCI_DEVICE_ID_INTEL_BYT_UART1 0x0f0a
+#define PCI_DEVICE_ID_INTEL_BYT_UART2 0x0f0c
+
+#define BYT_PRV_CLK 0x800
+#define BYT_PRV_CLK_EN (1 << 0)
+#define BYT_PRV_CLK_M_VAL_SHIFT 1
+#define BYT_PRV_CLK_N_VAL_SHIFT 16
+#define BYT_PRV_CLK_UPDATE (1 << 31)
+
+#define BYT_GENERAL_REG 0x808
+#define BYT_GENERAL_DIS_RTS_N_OVERRIDE (1 << 3)
+
+#define BYT_TX_OVF_INT 0x820
+#define BYT_TX_OVF_INT_MASK (1 << 1)
+
+static void
+byt_set_termios(struct uart_port *p, struct ktermios *termios,
+ struct ktermios *old)
+{
+ unsigned int baud = tty_termios_baud_rate(termios);
+ unsigned int m = 6912;
+ unsigned int n = 15625;
+ u32 reg;
+
+ /* For baud rates 1M, 2M, 3M and 4M the dividers must be adjusted. */
+ if (baud == 1000000 || baud == 2000000 || baud == 4000000) {
+ m = 64;
+ n = 100;
+
+ p->uartclk = 64000000;
+ } else if (baud == 3000000) {
+ m = 48;
+ n = 100;
+
+ p->uartclk = 48000000;
+ } else {
+ p->uartclk = 44236800;
+ }
+
+ /* Reset the clock */
+ reg = (m << BYT_PRV_CLK_M_VAL_SHIFT) | (n << BYT_PRV_CLK_N_VAL_SHIFT);
+ writel(reg, p->membase + BYT_PRV_CLK);
+ reg |= BYT_PRV_CLK_EN | BYT_PRV_CLK_UPDATE;
+ writel(reg, p->membase + BYT_PRV_CLK);
+
+ /*
+ * If auto-handshake mechanism is not enabled,
+ * disable rts_n override
+ */
+ reg = readl(p->membase + BYT_GENERAL_REG);
+ reg &= ~BYT_GENERAL_DIS_RTS_N_OVERRIDE;
+ if (termios->c_cflag & CRTSCTS)
+ reg |= BYT_GENERAL_DIS_RTS_N_OVERRIDE;
+ writel(reg, p->membase + BYT_GENERAL_REG);
+
+ serial8250_do_set_termios(p, termios, old);
+}
+
+static bool byt_dma_filter(struct dma_chan *chan, void *param)
+{
+ return chan->chan_id == *(int *)param;
+}
+
+static int
+byt_serial_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
+{
+ struct uart_8250_dma *dma;
+ int ret;
+
+ dma = devm_kzalloc(port->port.dev, sizeof(*dma), GFP_KERNEL);
+ if (!dma)
+ return -ENOMEM;
+
+ switch (priv->dev->device) {
+ case PCI_DEVICE_ID_INTEL_BYT_UART1:
+ dma->rx_chan_id = 3;
+ dma->tx_chan_id = 2;
+ break;
+ case PCI_DEVICE_ID_INTEL_BYT_UART2:
+ dma->rx_chan_id = 5;
+ dma->tx_chan_id = 4;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ dma->rxconf.slave_id = dma->rx_chan_id;
+ dma->rxconf.src_maxburst = 16;
+
+ dma->txconf.slave_id = dma->tx_chan_id;
+ dma->txconf.dst_maxburst = 16;
+
+ dma->fn = byt_dma_filter;
+ dma->rx_param = &dma->rx_chan_id;
+ dma->tx_param = &dma->tx_chan_id;
+
+ ret = pci_default_setup(priv, board, port, idx);
+ port->port.iotype = UPIO_MEM;
+ port->port.type = PORT_16550A;
+ port->port.flags = (port->port.flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
+ port->port.set_termios = byt_set_termios;
+ port->port.fifosize = 64;
+ port->tx_loadsz = 64;
+ port->dma = dma;
+ port->capabilities = UART_CAP_FIFO | UART_CAP_AFE;
+
+ /* Disable Tx counter interrupts */
+ writel(BYT_TX_OVF_INT_MASK, port->port.membase + BYT_TX_OVF_INT);
+
+ return ret;
+}
+
static int
pci_omegapci_setup(struct serial_private *priv,
const struct pciserial_board *board,
@@ -1344,17 +1479,80 @@ pci_brcm_trumanage_setup(struct serial_private *priv,
return ret;
}
+static int pci_fintek_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
+{
+ struct pci_dev *pdev = priv->dev;
+ unsigned long base;
+ unsigned long iobase;
+ unsigned long ciobase = 0;
+ u8 config_base;
+
+ /*
+ * We are supposed to be able to read these from the PCI config space,
+ * but the values there don't seem to match what we need to use, so
+ * just use these hard-coded values for now, as they are correct.
+ */
+ switch (idx) {
+ case 0: iobase = 0xe000; config_base = 0x40; break;
+ case 1: iobase = 0xe008; config_base = 0x48; break;
+ case 2: iobase = 0xe010; config_base = 0x50; break;
+ case 3: iobase = 0xe018; config_base = 0x58; break;
+ case 4: iobase = 0xe020; config_base = 0x60; break;
+ case 5: iobase = 0xe028; config_base = 0x68; break;
+ case 6: iobase = 0xe030; config_base = 0x70; break;
+ case 7: iobase = 0xe038; config_base = 0x78; break;
+ case 8: iobase = 0xe040; config_base = 0x80; break;
+ case 9: iobase = 0xe048; config_base = 0x88; break;
+ case 10: iobase = 0xe050; config_base = 0x90; break;
+ case 11: iobase = 0xe058; config_base = 0x98; break;
+ default:
+ /* Unknown number of ports, get out of here */
+ return -EINVAL;
+ }
+
+ if (idx < 4) {
+ base = pci_resource_start(priv->dev, 3);
+ ciobase = (int)(base + (0x8 * idx));
+ }
+
+ dev_dbg(&pdev->dev, "%s: idx=%d iobase=0x%lx ciobase=0x%lx config_base=0x%2x\n",
+ __func__, idx, iobase, ciobase, config_base);
+
+ /* Enable UART I/O port */
+ pci_write_config_byte(pdev, config_base + 0x00, 0x01);
+
+ /* Select 128-byte FIFO and 8x FIFO threshold */
+ pci_write_config_byte(pdev, config_base + 0x01, 0x33);
+
+ /* LSB UART */
+ pci_write_config_byte(pdev, config_base + 0x04, (u8)(iobase & 0xff));
+
+ /* MSB UART */
+ pci_write_config_byte(pdev, config_base + 0x05, (u8)((iobase & 0xff00) >> 8));
+
+ /* irq number, this usually fails, but the spec says to do it anyway. */
+ pci_write_config_byte(pdev, config_base + 0x06, pdev->irq);
+
+ port->port.iotype = UPIO_PORT;
+ port->port.iobase = iobase;
+ port->port.mapbase = 0;
+ port->port.membase = NULL;
+ port->port.regshift = 0;
+
+ return 0;
+}
+
static int skip_tx_en_setup(struct serial_private *priv,
const struct pciserial_board *board,
struct uart_8250_port *port, int idx)
{
port->port.flags |= UPF_NO_TXEN_TEST;
- printk(KERN_DEBUG "serial8250: skipping TxEn test for device "
- "[%04x:%04x] subsystem [%04x:%04x]\n",
- priv->dev->vendor,
- priv->dev->device,
- priv->dev->subsystem_vendor,
- priv->dev->subsystem_device);
+ dev_dbg(&priv->dev->dev,
+ "serial8250: skipping TxEn test for device [%04x:%04x] subsystem [%04x:%04x]\n",
+ priv->dev->vendor, priv->dev->device,
+ priv->dev->subsystem_vendor, priv->dev->subsystem_device);
return pci_default_setup(priv, board, port, idx);
}
@@ -1545,6 +1743,7 @@ pci_wch_ch353_setup(struct serial_private *priv,
#define PCI_DEVICE_ID_TITAN_800E 0xA014
#define PCI_DEVICE_ID_TITAN_200EI 0xA016
#define PCI_DEVICE_ID_TITAN_200EISI 0xA017
+#define PCI_DEVICE_ID_TITAN_200V3 0xA306
#define PCI_DEVICE_ID_TITAN_400V3 0xA310
#define PCI_DEVICE_ID_TITAN_410V3 0xA312
#define PCI_DEVICE_ID_TITAN_800V3 0xA314
@@ -1662,6 +1861,20 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.subdevice = PCI_ANY_ID,
.setup = kt_serial_setup,
},
+ {
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_BYT_UART1,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = byt_serial_setup,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_BYT_UART2,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = byt_serial_setup,
+ },
/*
* ITE
*/
@@ -1826,6 +2039,31 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.exit = pci_plx9050_exit,
},
/*
+ * Pericom
+ */
+ {
+ .vendor = 0x12d8,
+ .device = 0x7952,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_pericom_setup,
+ },
+ {
+ .vendor = 0x12d8,
+ .device = 0x7954,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_pericom_setup,
+ },
+ {
+ .vendor = 0x12d8,
+ .device = 0x7958,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_pericom_setup,
+ },
+
+ /*
* PLX
*/
{
@@ -2255,6 +2493,27 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.subdevice = PCI_ANY_ID,
.setup = pci_brcm_trumanage_setup,
},
+ {
+ .vendor = 0x1c29,
+ .device = 0x1104,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_fintek_setup,
+ },
+ {
+ .vendor = 0x1c29,
+ .device = 0x1108,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_fintek_setup,
+ },
+ {
+ .vendor = 0x1c29,
+ .device = 0x1112,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_fintek_setup,
+ },
/*
* Default "match everything" terminator entry
@@ -2449,9 +2708,13 @@ enum pci_board_num_t {
pbn_ADDIDATA_PCIe_4_3906250,
pbn_ADDIDATA_PCIe_8_3906250,
pbn_ce4100_1_115200,
+ pbn_byt,
pbn_omegapci,
pbn_NETMOS9900_2s_115200,
pbn_brcm_trumanage,
+ pbn_fintek_4,
+ pbn_fintek_8,
+ pbn_fintek_12,
};
/*
@@ -3185,6 +3448,13 @@ static struct pciserial_board pci_boards[] = {
.base_baud = 921600,
.reg_shift = 2,
},
+ [pbn_byt] = {
+ .flags = FL_BASE0,
+ .num_ports = 1,
+ .base_baud = 2764800,
+ .uart_offset = 0x80,
+ .reg_shift = 2,
+ },
[pbn_omegapci] = {
.flags = FL_BASE0,
.num_ports = 8,
@@ -3202,6 +3472,24 @@ static struct pciserial_board pci_boards[] = {
.reg_shift = 2,
.base_baud = 115200,
},
+ [pbn_fintek_4] = {
+ .num_ports = 4,
+ .uart_offset = 8,
+ .base_baud = 115200,
+ .first_offset = 0x40,
+ },
+ [pbn_fintek_8] = {
+ .num_ports = 8,
+ .uart_offset = 8,
+ .base_baud = 115200,
+ .first_offset = 0x40,
+ },
+ [pbn_fintek_12] = {
+ .num_ports = 12,
+ .uart_offset = 8,
+ .base_baud = 115200,
+ .first_offset = 0x40,
+ },
};
static const struct pci_device_id blacklist[] = {
@@ -3362,14 +3650,15 @@ pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
if (quirk->setup(priv, board, &uart, i))
break;
-#ifdef SERIAL_DEBUG_PCI
- printk(KERN_DEBUG "Setup PCI port: port %lx, irq %d, type %d\n",
- uart.port.iobase, uart.port.irq, uart.port.iotype);
-#endif
+ dev_dbg(&dev->dev, "Setup PCI port: port %lx, irq %d, type %d\n",
+ uart.port.iobase, uart.port.irq, uart.port.iotype);
priv->line[i] = serial8250_register_8250_port(&uart);
if (priv->line[i] < 0) {
- printk(KERN_WARNING "Couldn't register serial port %s: %d\n", pci_name(dev), priv->line[i]);
+ dev_err(&dev->dev,
+ "Couldn't register serial port %lx, irq %d, type %d, error %d\n",
+ uart.port.iobase, uart.port.irq,
+ uart.port.iotype, priv->line[i]);
break;
}
}
@@ -3462,7 +3751,7 @@ pciserial_init_one(struct pci_dev *dev, const struct pci_device_id *ent)
}
if (ent->driver_data >= ARRAY_SIZE(pci_boards)) {
- printk(KERN_ERR "pci_init_one: invalid driver_data: %ld\n",
+ dev_err(&dev->dev, "invalid driver_data: %ld\n",
ent->driver_data);
return -EINVAL;
}
@@ -3520,8 +3809,6 @@ static void pciserial_remove_one(struct pci_dev *dev)
{
struct serial_private *priv = pci_get_drvdata(dev);
- pci_set_drvdata(dev, NULL);
-
pciserial_remove_ports(priv);
pci_disable_device(dev);
@@ -3555,7 +3842,7 @@ static int pciserial_resume_one(struct pci_dev *dev)
err = pci_enable_device(dev);
/* FIXME: We cannot simply error out here */
if (err)
- printk(KERN_ERR "pciserial: Unable to re-enable ports, trying to continue.\n");
+ dev_err(&dev->dev, "Unable to re-enable ports, trying to continue.\n");
pciserial_resume_ports(priv);
}
return 0;
@@ -4140,6 +4427,9 @@ static struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200EISI,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_oxsemi_2_4000000 },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200V3,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_2_921600 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400V3,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b0_4_921600 },
@@ -4848,6 +5138,15 @@ static struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CE4100_UART,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_ce4100_1_115200 },
+ /* Intel BayTrail */
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT_UART1,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+ pbn_byt },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT_UART2,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+ pbn_byt },
/*
* Cronyx Omega PCI
@@ -4918,6 +5217,11 @@ static struct pci_device_id serial_pci_tbl[] = {
0,
0, pbn_exar_XR17V358 },
+ /* Fintek PCI serial cards */
+ { PCI_DEVICE(0x1c29, 0x1104), .driver_data = pbn_fintek_4 },
+ { PCI_DEVICE(0x1c29, 0x1108), .driver_data = pbn_fintek_8 },
+ { PCI_DEVICE(0x1c29, 0x1112), .driver_data = pbn_fintek_12 },
+
/*
* These entries match devices with class COMMUNICATION_SERIAL,
* COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL
diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index 35d9ab95c5cb..682a2fbe5c06 100644
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -12,7 +12,6 @@
* the Free Software Foundation; either version 2 of the License.
*/
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/pci.h>
#include <linux/pnp.h>
#include <linux/string.h>
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index f3b306efaa59..23329918f229 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -41,7 +41,7 @@ config SERIAL_8250_DEPRECATED_OPTIONS
accept kernel parameters in both forms like 8250_core.nr_uarts=4 and
8250.nr_uarts=4. We now renamed the module back to 8250, but if
anybody noticed in 3.7 and changed their userspace we still have to
- keep the 8350_core.* options around until they revert the changes
+ keep the 8250_core.* options around until they revert the changes
they already did.
If 8250 is built as a module, this adds 8250_core alias instead.
diff --git a/drivers/tty/serial/8250/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c
index 1b74b88e1e1e..4d180c9423ef 100644
--- a/drivers/tty/serial/8250/serial_cs.c
+++ b/drivers/tty/serial/8250/serial_cs.c
@@ -34,7 +34,6 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
-#include <linux/init.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index febd45cd5027..441ada489874 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -181,9 +181,8 @@ config SERIAL_KS8695_CONSOLE
config SERIAL_CLPS711X
tristate "CLPS711X serial port support"
- depends on ARCH_CLPS711X
+ depends on ARCH_CLPS711X || COMPILE_TEST
select SERIAL_CORE
- default y
help
This enables the driver for the on-chip UARTs of the Cirrus
Logic EP711x/EP721x/EP731x processors.
@@ -709,7 +708,7 @@ config SERIAL_IP22_ZILOG_CONSOLE
config SERIAL_SH_SCI
tristate "SuperH SCI(F) serial port support"
- depends on HAVE_CLK && (SUPERH || ARCH_SHMOBILE)
+ depends on HAVE_CLK && (SUPERH || ARM || COMPILE_TEST)
select SERIAL_CORE
config SERIAL_SH_SCI_NR_UARTS
@@ -1146,31 +1145,13 @@ config SERIAL_QE
This driver supports the QE serial ports on Freescale embedded
PowerPC that contain a QUICC Engine.
-config SERIAL_SC26XX
- tristate "SC2681/SC2692 serial port support"
- depends on SNI_RM
- select SERIAL_CORE
- help
- This is a driver for the onboard serial ports of
- older RM400 machines.
-
-config SERIAL_SC26XX_CONSOLE
- bool "Console on SC2681/SC2692 serial port"
- depends on SERIAL_SC26XX=y
- select SERIAL_CORE_CONSOLE
- help
- Support for Console on SC2681/SC2692 serial ports.
-
config SERIAL_SCCNXP
tristate "SCCNXP serial port support"
- depends on !SERIAL_SC26XX
select SERIAL_CORE
- default n
help
This selects support for an advanced UART from NXP (Philips).
Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
SC28L202, SCC68681 and SCC68692.
- Positioned as a replacement for the driver SC26XX.
config SERIAL_SCCNXP_CONSOLE
bool "Console on SCCNXP serial port"
@@ -1512,6 +1493,7 @@ config SERIAL_FSL_LPUART_CONSOLE
config SERIAL_ST_ASC
tristate "ST ASC serial port support"
select SERIAL_CORE
+ depends on ARM || COMPILE_TEST
help
This driver is for the on-chip Asychronous Serial Controller on
STMicroelectronics STi SoCs.
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index 3068c7722087..3680854fef41 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -47,7 +47,6 @@ obj-$(CONFIG_SERIAL_M32R_SIO) += m32r_sio.o
obj-$(CONFIG_SERIAL_MPSC) += mpsc.o
obj-$(CONFIG_SERIAL_SB1250_DUART) += sb1250-duart.o
obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o
-obj-$(CONFIG_SERIAL_SC26XX) += sc26xx.o
obj-$(CONFIG_SERIAL_SCCNXP) += sccnxp.o
obj-$(CONFIG_SERIAL_JSM) += jsm/
obj-$(CONFIG_SERIAL_TXX9) += serial_txx9.o
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index 8b90f0b6dfdf..01c9e72433e1 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -728,7 +728,6 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id)
amba_set_drvdata(dev, uap);
ret = uart_add_one_port(&amba_reg, &uap->port);
if (ret) {
- amba_set_drvdata(dev, NULL);
amba_ports[i] = NULL;
clk_put(uap->clk);
unmap:
@@ -745,8 +744,6 @@ static int pl010_remove(struct amba_device *dev)
struct uart_amba_port *uap = amba_get_drvdata(dev);
int i;
- amba_set_drvdata(dev, NULL);
-
uart_remove_one_port(&amba_reg, &uap->port);
for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
@@ -759,9 +756,10 @@ static int pl010_remove(struct amba_device *dev)
return 0;
}
-static int pl010_suspend(struct amba_device *dev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int pl010_suspend(struct device *dev)
{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
+ struct uart_amba_port *uap = dev_get_drvdata(dev);
if (uap)
uart_suspend_port(&amba_reg, &uap->port);
@@ -769,15 +767,18 @@ static int pl010_suspend(struct amba_device *dev, pm_message_t state)
return 0;
}
-static int pl010_resume(struct amba_device *dev)
+static int pl010_resume(struct device *dev)
{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
+ struct uart_amba_port *uap = dev_get_drvdata(dev);
if (uap)
uart_resume_port(&amba_reg, &uap->port);
return 0;
}
+#endif
+
+static SIMPLE_DEV_PM_OPS(pl010_dev_pm_ops, pl010_suspend, pl010_resume);
static struct amba_id pl010_ids[] = {
{
@@ -792,12 +793,11 @@ MODULE_DEVICE_TABLE(amba, pl010_ids);
static struct amba_driver pl010_driver = {
.drv = {
.name = "uart-pl010",
+ .pm = &pl010_dev_pm_ops,
},
.id_table = pl010_ids,
.probe = pl010_probe,
.remove = pl010_remove,
- .suspend = pl010_suspend,
- .resume = pl010_resume,
};
static int __init pl010_init(void)
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index aaa22867e656..d58783d364e3 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -112,8 +112,6 @@ static struct vendor_data vendor_st = {
.get_fifosize = get_fifosize_st,
};
-static struct uart_amba_port *amba_ports[UART_NR];
-
/* Deals with DMA transactions */
struct pl011_sgbuf {
@@ -969,6 +967,8 @@ static void pl011_dma_rx_poll(unsigned long args)
spin_lock_irqsave(&uap->port.lock, flags);
pl011_dma_rx_stop(uap);
+ uap->im |= UART011_RXIM;
+ writew(uap->im, uap->port.membase + UART011_IMSC);
spin_unlock_irqrestore(&uap->port.lock, flags);
uap->dmarx.running = false;
@@ -1216,8 +1216,8 @@ __acquires(&uap->port.lock)
dev_dbg(uap->port.dev, "could not trigger RX DMA job "
"fall back to interrupt mode again\n");
uap->im |= UART011_RXIM;
+ writew(uap->im, uap->port.membase + UART011_IMSC);
} else {
- uap->im &= ~UART011_RXIM;
#ifdef CONFIG_DMA_ENGINE
/* Start Rx DMA poll */
if (uap->dmarx.poll_rate) {
@@ -1229,8 +1229,6 @@ __acquires(&uap->port.lock)
}
#endif
}
-
- writew(uap->im, uap->port.membase + UART011_IMSC);
}
spin_lock(&uap->port.lock);
}
@@ -1513,10 +1511,25 @@ static int pl011_hwinit(struct uart_port *port)
return retval;
}
+static void pl011_write_lcr_h(struct uart_amba_port *uap, unsigned int lcr_h)
+{
+ writew(lcr_h, uap->port.membase + uap->lcrh_rx);
+ if (uap->lcrh_rx != uap->lcrh_tx) {
+ int i;
+ /*
+ * Wait 10 PCLKs before writing LCRH_TX register,
+ * to get this delay write read only register 10 times
+ */
+ for (i = 0; i < 10; ++i)
+ writew(0xff, uap->port.membase + UART011_MIS);
+ writew(lcr_h, uap->port.membase + uap->lcrh_tx);
+ }
+}
+
static int pl011_startup(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int cr;
+ unsigned int cr, lcr_h, fbrd, ibrd;
int retval;
retval = pl011_hwinit(port);
@@ -1535,32 +1548,36 @@ static int pl011_startup(struct uart_port *port)
writew(uap->vendor->ifls, uap->port.membase + UART011_IFLS);
/*
- * Provoke TX FIFO interrupt into asserting.
+ * Provoke TX FIFO interrupt into asserting. Taking care to preserve
+ * baud rate and data format specified by FBRD, IBRD and LCRH as the
+ * UART may already be in use as a console.
*/
+ spin_lock_irq(&uap->port.lock);
+
+ fbrd = readw(uap->port.membase + UART011_FBRD);
+ ibrd = readw(uap->port.membase + UART011_IBRD);
+ lcr_h = readw(uap->port.membase + uap->lcrh_rx);
+
cr = UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_LBE;
writew(cr, uap->port.membase + UART011_CR);
writew(0, uap->port.membase + UART011_FBRD);
writew(1, uap->port.membase + UART011_IBRD);
- writew(0, uap->port.membase + uap->lcrh_rx);
- if (uap->lcrh_tx != uap->lcrh_rx) {
- int i;
- /*
- * Wait 10 PCLKs before writing LCRH_TX register,
- * to get this delay write read only register 10 times
- */
- for (i = 0; i < 10; ++i)
- writew(0xff, uap->port.membase + UART011_MIS);
- writew(0, uap->port.membase + uap->lcrh_tx);
- }
+ pl011_write_lcr_h(uap, 0);
writew(0, uap->port.membase + UART01x_DR);
while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
barrier();
+ writew(fbrd, uap->port.membase + UART011_FBRD);
+ writew(ibrd, uap->port.membase + UART011_IBRD);
+ pl011_write_lcr_h(uap, lcr_h);
+
/* restore RTS and DTR */
cr = uap->old_cr & (UART011_CR_RTS | UART011_CR_DTR);
cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE;
writew(cr, uap->port.membase + UART011_CR);
+ spin_unlock_irq(&uap->port.lock);
+
/*
* initialise the old status of the modem signals
*/
@@ -1629,11 +1646,13 @@ static void pl011_shutdown(struct uart_port *port)
* it during startup().
*/
uap->autorts = false;
+ spin_lock_irq(&uap->port.lock);
cr = readw(uap->port.membase + UART011_CR);
uap->old_cr = cr;
cr &= UART011_CR_RTS | UART011_CR_DTR;
cr |= UART01x_CR_UARTEN | UART011_CR_TXE;
writew(cr, uap->port.membase + UART011_CR);
+ spin_unlock_irq(&uap->port.lock);
/*
* disable break condition and fifos
@@ -1797,17 +1816,7 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
* UART011_FBRD & UART011_IBRD.
* ----------^----------^----------^----------^-----
*/
- writew(lcr_h, port->membase + uap->lcrh_rx);
- if (uap->lcrh_rx != uap->lcrh_tx) {
- int i;
- /*
- * Wait 10 PCLKs before writing LCRH_TX register,
- * to get this delay write read only register 10 times
- */
- for (i = 0; i < 10; ++i)
- writew(0xff, uap->port.membase + UART011_MIS);
- writew(lcr_h, port->membase + uap->lcrh_tx);
- }
+ pl011_write_lcr_h(uap, lcr_h);
writew(old_cr, port->membase + UART011_CR);
spin_unlock_irqrestore(&port->lock, flags);
@@ -2147,7 +2156,6 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
amba_set_drvdata(dev, uap);
ret = uart_add_one_port(&amba_reg, &uap->port);
if (ret) {
- amba_set_drvdata(dev, NULL);
amba_ports[i] = NULL;
pl011_dma_remove(uap);
}
@@ -2160,8 +2168,6 @@ static int pl011_remove(struct amba_device *dev)
struct uart_amba_port *uap = amba_get_drvdata(dev);
int i;
- amba_set_drvdata(dev, NULL);
-
uart_remove_one_port(&amba_reg, &uap->port);
for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
@@ -2172,10 +2178,10 @@ static int pl011_remove(struct amba_device *dev)
return 0;
}
-#ifdef CONFIG_PM
-static int pl011_suspend(struct amba_device *dev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int pl011_suspend(struct device *dev)
{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
+ struct uart_amba_port *uap = dev_get_drvdata(dev);
if (!uap)
return -EINVAL;
@@ -2183,9 +2189,9 @@ static int pl011_suspend(struct amba_device *dev, pm_message_t state)
return uart_suspend_port(&amba_reg, &uap->port);
}
-static int pl011_resume(struct amba_device *dev)
+static int pl011_resume(struct device *dev)
{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
+ struct uart_amba_port *uap = dev_get_drvdata(dev);
if (!uap)
return -EINVAL;
@@ -2194,6 +2200,8 @@ static int pl011_resume(struct amba_device *dev)
}
#endif
+static SIMPLE_DEV_PM_OPS(pl011_dev_pm_ops, pl011_suspend, pl011_resume);
+
static struct amba_id pl011_ids[] = {
{
.id = 0x00041011,
@@ -2213,14 +2221,11 @@ MODULE_DEVICE_TABLE(amba, pl011_ids);
static struct amba_driver pl011_driver = {
.drv = {
.name = "uart-pl011",
+ .pm = &pl011_dev_pm_ops,
},
.id_table = pl011_ids,
.probe = pl011_probe,
.remove = pl011_remove,
-#ifdef CONFIG_PM
- .suspend = pl011_suspend,
- .resume = pl011_resume,
-#endif
};
static int __init pl011_init(void)
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 569872f4c9b8..c9f5c9dcc15c 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -533,7 +533,7 @@ arc_uart_init_one(struct platform_device *pdev, int dev_id)
unsigned long *plat_data;
struct arc_uart_port *uart = &arc_uart_ports[dev_id];
- plat_data = (unsigned long *)dev_get_platdata(&pdev->dev);
+ plat_data = dev_get_platdata(&pdev->dev);
if (!plat_data)
return -ENODEV;
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 6b0f75eac8a2..a49f10d269b2 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -99,6 +99,7 @@ static void atmel_stop_rx(struct uart_port *port);
#define UART_PUT_RTOR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_RTOR)
#define UART_PUT_TTGR(port, v) __raw_writel(v, (port)->membase + ATMEL_US_TTGR)
#define UART_GET_IP_NAME(port) __raw_readl((port)->membase + ATMEL_US_NAME)
+#define UART_GET_IP_VERSION(port) __raw_readl((port)->membase + ATMEL_US_VERSION)
/* PDC registers */
#define UART_PUT_PTCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_PTCR)
@@ -824,9 +825,6 @@ static void atmel_release_rx_dma(struct uart_port *port)
atmel_port->desc_rx = NULL;
atmel_port->chan_rx = NULL;
atmel_port->cookie_rx = -EINVAL;
-
- if (!atmel_port->is_usart)
- del_timer_sync(&atmel_port->uart_timer);
}
static void atmel_rx_from_dma(struct uart_port *port)
@@ -1228,9 +1226,6 @@ static void atmel_release_rx_pdc(struct uart_port *port)
DMA_FROM_DEVICE);
kfree(pdc->buf);
}
-
- if (!atmel_port->is_usart)
- del_timer_sync(&atmel_port->uart_timer);
}
static void atmel_rx_from_pdc(struct uart_port *port)
@@ -1503,6 +1498,7 @@ static void atmel_get_ip_name(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
int name = UART_GET_IP_NAME(port);
+ u32 version;
int usart, uart;
/* usart and uart ascii */
usart = 0x55534152;
@@ -1517,7 +1513,22 @@ static void atmel_get_ip_name(struct uart_port *port)
dev_dbg(port->dev, "This is uart\n");
atmel_port->is_usart = false;
} else {
- dev_err(port->dev, "Not supported ip name, set to uart\n");
+ /* fallback for older SoCs: use version field */
+ version = UART_GET_IP_VERSION(port);
+ switch (version) {
+ case 0x302:
+ case 0x10213:
+ dev_dbg(port->dev, "This version is usart\n");
+ atmel_port->is_usart = true;
+ break;
+ case 0x203:
+ case 0x10202:
+ dev_dbg(port->dev, "This version is uart\n");
+ atmel_port->is_usart = false;
+ break;
+ default:
+ dev_err(port->dev, "Not supported ip name nor version, set to uart\n");
+ }
}
}
@@ -1587,12 +1598,13 @@ static int atmel_startup(struct uart_port *port)
/* enable xmit & rcvr */
UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
+ setup_timer(&atmel_port->uart_timer,
+ atmel_uart_timer_callback,
+ (unsigned long)port);
+
if (atmel_use_pdc_rx(port)) {
/* set UART timeout */
if (!atmel_port->is_usart) {
- setup_timer(&atmel_port->uart_timer,
- atmel_uart_timer_callback,
- (unsigned long)port);
mod_timer(&atmel_port->uart_timer,
jiffies + uart_poll_timeout(port));
/* set USART timeout */
@@ -1607,9 +1619,6 @@ static int atmel_startup(struct uart_port *port)
} else if (atmel_use_dma_rx(port)) {
/* set UART timeout */
if (!atmel_port->is_usart) {
- setup_timer(&atmel_port->uart_timer,
- atmel_uart_timer_callback,
- (unsigned long)port);
mod_timer(&atmel_port->uart_timer,
jiffies + uart_poll_timeout(port));
/* set USART timeout */
@@ -1633,12 +1642,30 @@ static int atmel_startup(struct uart_port *port)
static void atmel_shutdown(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+ /*
+ * Prevent any tasklets being scheduled during
+ * cleanup
+ */
+ del_timer_sync(&atmel_port->uart_timer);
+
+ /*
+ * Clear out any scheduled tasklets before
+ * we destroy the buffers
+ */
+ tasklet_kill(&atmel_port->tasklet);
+
/*
- * Ensure everything is stopped.
+ * Ensure everything is stopped and
+ * disable all interrupts, port and break condition.
*/
atmel_stop_rx(port);
atmel_stop_tx(port);
+ UART_PUT_CR(port, ATMEL_US_RSTSTA);
+ UART_PUT_IDR(port, -1);
+
+
/*
* Shut-down the DMA.
*/
@@ -1648,10 +1675,10 @@ static void atmel_shutdown(struct uart_port *port)
atmel_port->release_tx(port);
/*
- * Disable all interrupts, port and break condition.
+ * Reset ring buffer pointers
*/
- UART_PUT_CR(port, ATMEL_US_RSTSTA);
- UART_PUT_IDR(port, -1);
+ atmel_port->rx_ring.head = 0;
+ atmel_port->rx_ring.tail = 0;
/*
* Free the interrupt
@@ -2424,11 +2451,12 @@ static int atmel_serial_remove(struct platform_device *pdev)
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
int ret = 0;
+ tasklet_kill(&atmel_port->tasklet);
+
device_init_wakeup(&pdev->dev, 0);
ret = uart_remove_one_port(&atmel_uart, port);
- tasklet_kill(&atmel_port->tasklet);
kfree(atmel_port->rx_ring.buf);
/* "port" is allocated statically, so we shouldn't free it */
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index 87636cc61a21..4f229703328b 100644
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -766,9 +766,8 @@ static int sport_uart_probe(struct platform_device *pdev)
return -ENOMEM;
}
- ret = peripheral_request_list(
- (unsigned short *)dev_get_platdata(&pdev->dev),
- DRV_NAME);
+ ret = peripheral_request_list(dev_get_platdata(&pdev->dev),
+ DRV_NAME);
if (ret) {
dev_err(&pdev->dev,
"Fail to request SPORT peripherals\n");
@@ -844,8 +843,7 @@ static int sport_uart_probe(struct platform_device *pdev)
out_error_unmap:
iounmap(sport->port.membase);
out_error_free_peripherals:
- peripheral_free_list(
- (unsigned short *)dev_get_platdata(&pdev->dev));
+ peripheral_free_list(dev_get_platdata(&pdev->dev));
out_error_free_mem:
kfree(sport);
bfin_sport_uart_ports[pdev->id] = NULL;
@@ -864,8 +862,7 @@ static int sport_uart_remove(struct platform_device *pdev)
if (sport) {
uart_remove_one_port(&sport_uart_reg, &sport->port);
iounmap(sport->port.membase);
- peripheral_free_list(
- (unsigned short *)dev_get_platdata(&pdev->dev));
+ peripheral_free_list(dev_get_platdata(&pdev->dev));
kfree(sport);
bfin_sport_uart_ports[pdev->id] = NULL;
}
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index 3c75e8e04028..869ceba2ec57 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -680,7 +680,7 @@ static int bfin_serial_startup(struct uart_port *port)
default:
uart_dma_ch_rx = uart_dma_ch_tx = 0;
break;
- };
+ }
if (uart_dma_ch_rx &&
request_dma(uart_dma_ch_rx, "BFIN_UART_RX") < 0) {
@@ -726,7 +726,7 @@ static int bfin_serial_startup(struct uart_port *port)
#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
if (uart->cts_pin >= 0) {
if (request_irq(uart->status_irq, bfin_serial_mctrl_cts_int,
- IRQF_DISABLED, "BFIN_UART_MODEM_STATUS", uart)) {
+ 0, "BFIN_UART_MODEM_STATUS", uart)) {
uart->cts_pin = -1;
dev_info(port->dev, "Unable to attach BlackFin UART Modem Status interrupt.\n");
}
@@ -765,7 +765,7 @@ static void bfin_serial_shutdown(struct uart_port *port)
break;
default:
break;
- };
+ }
#endif
free_irq(uart->rx_irq, uart);
free_irq(uart->tx_irq, uart);
@@ -1240,7 +1240,7 @@ static int bfin_serial_probe(struct platform_device *pdev)
*/
#endif
ret = peripheral_request_list(
- (unsigned short *)dev_get_platdata(&pdev->dev),
+ dev_get_platdata(&pdev->dev),
DRIVER_NAME);
if (ret) {
dev_err(&pdev->dev,
@@ -1358,8 +1358,7 @@ static int bfin_serial_probe(struct platform_device *pdev)
out_error_unmap:
iounmap(uart->port.membase);
out_error_free_peripherals:
- peripheral_free_list(
- (unsigned short *)dev_get_platdata(&pdev->dev));
+ peripheral_free_list(dev_get_platdata(&pdev->dev));
out_error_free_mem:
kfree(uart);
bfin_serial_ports[pdev->id] = NULL;
@@ -1377,8 +1376,7 @@ static int bfin_serial_remove(struct platform_device *pdev)
if (uart) {
uart_remove_one_port(&bfin_serial_reg, &uart->port);
iounmap(uart->port.membase);
- peripheral_free_list(
- (unsigned short *)dev_get_platdata(&pdev->dev));
+ peripheral_free_list(dev_get_platdata(&pdev->dev));
kfree(uart);
bfin_serial_ports[pdev->id] = NULL;
}
@@ -1432,8 +1430,8 @@ static int bfin_earlyprintk_probe(struct platform_device *pdev)
return -ENOENT;
}
- ret = peripheral_request_list(
- (unsigned short *)dev_get_platdata(&pdev->dev), DRIVER_NAME);
+ ret = peripheral_request_list(dev_get_platdata(&pdev->dev),
+ DRIVER_NAME);
if (ret) {
dev_err(&pdev->dev,
"fail to request bfin serial peripherals\n");
@@ -1463,8 +1461,7 @@ static int bfin_earlyprintk_probe(struct platform_device *pdev)
return 0;
out_error_free_peripherals:
- peripheral_free_list(
- (unsigned short *)dev_get_platdata(&pdev->dev));
+ peripheral_free_list(dev_get_platdata(&pdev->dev));
return ret;
}
diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c
index 7e4e4088471c..b0eacb83f831 100644
--- a/drivers/tty/serial/clps711x.c
+++ b/drivers/tty/serial/clps711x.c
@@ -21,44 +21,66 @@
#include <linux/console.h>
#include <linux/serial_core.h>
#include <linux/serial.h>
-#include <linux/io.h>
#include <linux/clk.h>
+#include <linux/io.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/ioport.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/regmap.h>
-#include <mach/hardware.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/clps711x.h>
-#define UART_CLPS711X_NAME "uart-clps711x"
+#define UART_CLPS711X_DEVNAME "ttyCL"
#define UART_CLPS711X_NR 2
#define UART_CLPS711X_MAJOR 204
#define UART_CLPS711X_MINOR 40
-#define UBRLCR(port) ((port)->line ? UBRLCR2 : UBRLCR1)
-#define UARTDR(port) ((port)->line ? UARTDR2 : UARTDR1)
-#define SYSFLG(port) ((port)->line ? SYSFLG2 : SYSFLG1)
-#define SYSCON(port) ((port)->line ? SYSCON2 : SYSCON1)
-#define TX_IRQ(port) ((port)->line ? IRQ_UTXINT2 : IRQ_UTXINT1)
-#define RX_IRQ(port) ((port)->line ? IRQ_URXINT2 : IRQ_URXINT1)
+#define UARTDR_OFFSET (0x00)
+#define UBRLCR_OFFSET (0x40)
+
+#define UARTDR_FRMERR (1 << 8)
+#define UARTDR_PARERR (1 << 9)
+#define UARTDR_OVERR (1 << 10)
+
+#define UBRLCR_BAUD_MASK ((1 << 12) - 1)
+#define UBRLCR_BREAK (1 << 12)
+#define UBRLCR_PRTEN (1 << 13)
+#define UBRLCR_EVENPRT (1 << 14)
+#define UBRLCR_XSTOP (1 << 15)
+#define UBRLCR_FIFOEN (1 << 16)
+#define UBRLCR_WRDLEN5 (0 << 17)
+#define UBRLCR_WRDLEN6 (1 << 17)
+#define UBRLCR_WRDLEN7 (2 << 17)
+#define UBRLCR_WRDLEN8 (3 << 17)
+#define UBRLCR_WRDLEN_MASK (3 << 17)
struct clps711x_port {
- struct uart_driver uart;
- struct clk *uart_clk;
- struct uart_port port[UART_CLPS711X_NR];
- int tx_enabled[UART_CLPS711X_NR];
-#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
- struct console console;
-#endif
+ struct uart_port port;
+ unsigned int tx_enabled;
+ int rx_irq;
+ struct regmap *syscon;
+ bool use_ms;
+};
+
+static struct uart_driver clps711x_uart = {
+ .owner = THIS_MODULE,
+ .driver_name = UART_CLPS711X_DEVNAME,
+ .dev_name = UART_CLPS711X_DEVNAME,
+ .major = UART_CLPS711X_MAJOR,
+ .minor = UART_CLPS711X_MINOR,
+ .nr = UART_CLPS711X_NR,
};
static void uart_clps711x_stop_tx(struct uart_port *port)
{
struct clps711x_port *s = dev_get_drvdata(port->dev);
- if (s->tx_enabled[port->line]) {
- disable_irq(TX_IRQ(port));
- s->tx_enabled[port->line] = 0;
+ if (s->tx_enabled) {
+ disable_irq(port->irq);
+ s->tx_enabled = 0;
}
}
@@ -66,33 +88,27 @@ static void uart_clps711x_start_tx(struct uart_port *port)
{
struct clps711x_port *s = dev_get_drvdata(port->dev);
- if (!s->tx_enabled[port->line]) {
- enable_irq(TX_IRQ(port));
- s->tx_enabled[port->line] = 1;
+ if (!s->tx_enabled) {
+ s->tx_enabled = 1;
+ enable_irq(port->irq);
}
}
-static void uart_clps711x_stop_rx(struct uart_port *port)
-{
- disable_irq(RX_IRQ(port));
-}
-
-static void uart_clps711x_enable_ms(struct uart_port *port)
-{
- /* Do nothing */
-}
-
static irqreturn_t uart_clps711x_int_rx(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- unsigned int status, ch, flg;
+ struct clps711x_port *s = dev_get_drvdata(port->dev);
+ unsigned int status, flg;
+ u16 ch;
for (;;) {
- status = clps_readl(SYSFLG(port));
- if (status & SYSFLG_URXFE)
+ u32 sysflg = 0;
+
+ regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
+ if (sysflg & SYSFLG_URXFE)
break;
- ch = clps_readw(UARTDR(port));
+ ch = readw(port->membase + UARTDR_OFFSET);
status = ch & (UARTDR_FRMERR | UARTDR_PARERR | UARTDR_OVERR);
ch &= 0xff;
@@ -138,23 +154,29 @@ static irqreturn_t uart_clps711x_int_tx(int irq, void *dev_id)
struct circ_buf *xmit = &port->state->xmit;
if (port->x_char) {
- clps_writew(port->x_char, UARTDR(port));
+ writew(port->x_char, port->membase + UARTDR_OFFSET);
port->icount.tx++;
port->x_char = 0;
return IRQ_HANDLED;
}
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
- disable_irq_nosync(TX_IRQ(port));
- s->tx_enabled[port->line] = 0;
+ if (s->tx_enabled) {
+ disable_irq_nosync(port->irq);
+ s->tx_enabled = 0;
+ }
return IRQ_HANDLED;
}
while (!uart_circ_empty(xmit)) {
- clps_writew(xmit->buf[xmit->tail], UARTDR(port));
+ u32 sysflg = 0;
+
+ writew(xmit->buf[xmit->tail], port->membase + UARTDR_OFFSET);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
- if (clps_readl(SYSFLG(port) & SYSFLG_UTXFF))
+
+ regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
+ if (sysflg & SYSFLG_UTXFF)
break;
}
@@ -166,20 +188,28 @@ static irqreturn_t uart_clps711x_int_tx(int irq, void *dev_id)
static unsigned int uart_clps711x_tx_empty(struct uart_port *port)
{
- return (clps_readl(SYSFLG(port) & SYSFLG_UBUSY)) ? 0 : TIOCSER_TEMT;
+ struct clps711x_port *s = dev_get_drvdata(port->dev);
+ u32 sysflg = 0;
+
+ regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
+
+ return (sysflg & SYSFLG_UBUSY) ? 0 : TIOCSER_TEMT;
}
static unsigned int uart_clps711x_get_mctrl(struct uart_port *port)
{
- unsigned int status, result = 0;
+ struct clps711x_port *s = dev_get_drvdata(port->dev);
+ unsigned int result = 0;
+
+ if (s->use_ms) {
+ u32 sysflg = 0;
- if (port->line == 0) {
- status = clps_readl(SYSFLG1);
- if (status & SYSFLG1_DCD)
+ regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
+ if (sysflg & SYSFLG1_DCD)
result |= TIOCM_CAR;
- if (status & SYSFLG1_DSR)
+ if (sysflg & SYSFLG1_DSR)
result |= TIOCM_DSR;
- if (status & SYSFLG1_CTS)
+ if (sysflg & SYSFLG1_CTS)
result |= TIOCM_CTS;
} else
result = TIOCM_DSR | TIOCM_CTS | TIOCM_CAR;
@@ -194,65 +224,53 @@ static void uart_clps711x_set_mctrl(struct uart_port *port, unsigned int mctrl)
static void uart_clps711x_break_ctl(struct uart_port *port, int break_state)
{
- unsigned long flags;
unsigned int ubrlcr;
- spin_lock_irqsave(&port->lock, flags);
-
- ubrlcr = clps_readl(UBRLCR(port));
+ ubrlcr = readl(port->membase + UBRLCR_OFFSET);
if (break_state)
ubrlcr |= UBRLCR_BREAK;
else
ubrlcr &= ~UBRLCR_BREAK;
- clps_writel(ubrlcr, UBRLCR(port));
+ writel(ubrlcr, port->membase + UBRLCR_OFFSET);
+}
+
+static void uart_clps711x_set_ldisc(struct uart_port *port, int ld)
+{
+ if (!port->line) {
+ struct clps711x_port *s = dev_get_drvdata(port->dev);
- spin_unlock_irqrestore(&port->lock, flags);
+ regmap_update_bits(s->syscon, SYSCON_OFFSET, SYSCON1_SIREN,
+ (ld == N_IRDA) ? SYSCON1_SIREN : 0);
+ }
}
static int uart_clps711x_startup(struct uart_port *port)
{
struct clps711x_port *s = dev_get_drvdata(port->dev);
- int ret;
-
- s->tx_enabled[port->line] = 1;
- /* Allocate the IRQs */
- ret = devm_request_irq(port->dev, TX_IRQ(port), uart_clps711x_int_tx,
- 0, UART_CLPS711X_NAME " TX", port);
- if (ret)
- return ret;
-
- ret = devm_request_irq(port->dev, RX_IRQ(port), uart_clps711x_int_rx,
- 0, UART_CLPS711X_NAME " RX", port);
- if (ret) {
- devm_free_irq(port->dev, TX_IRQ(port), port);
- return ret;
- }
/* Disable break */
- clps_writel(clps_readl(UBRLCR(port)) & ~UBRLCR_BREAK, UBRLCR(port));
+ writel(readl(port->membase + UBRLCR_OFFSET) & ~UBRLCR_BREAK,
+ port->membase + UBRLCR_OFFSET);
/* Enable the port */
- clps_writel(clps_readl(SYSCON(port)) | SYSCON_UARTEN, SYSCON(port));
-
- return 0;
+ return regmap_update_bits(s->syscon, SYSCON_OFFSET,
+ SYSCON_UARTEN, SYSCON_UARTEN);
}
static void uart_clps711x_shutdown(struct uart_port *port)
{
- /* Free the interrupts */
- devm_free_irq(port->dev, TX_IRQ(port), port);
- devm_free_irq(port->dev, RX_IRQ(port), port);
+ struct clps711x_port *s = dev_get_drvdata(port->dev);
/* Disable the port */
- clps_writel(clps_readl(SYSCON(port)) & ~SYSCON_UARTEN, SYSCON(port));
+ regmap_update_bits(s->syscon, SYSCON_OFFSET, SYSCON_UARTEN, 0);
}
static void uart_clps711x_set_termios(struct uart_port *port,
struct ktermios *termios,
struct ktermios *old)
{
- unsigned int ubrlcr, baud, quot;
- unsigned long flags;
+ u32 ubrlcr;
+ unsigned int baud, quot;
/* Mask termios capabilities we don't support */
termios->c_cflag &= ~CMSPAR;
@@ -291,8 +309,6 @@ static void uart_clps711x_set_termios(struct uart_port *port,
/* Enable FIFO */
ubrlcr |= UBRLCR_FIFOEN;
- spin_lock_irqsave(&port->lock, flags);
-
/* Set read status mask */
port->read_status_mask = UARTDR_OVERR;
if (termios->c_iflag & INPCK)
@@ -306,9 +322,7 @@ static void uart_clps711x_set_termios(struct uart_port *port,
uart_update_timeout(port, termios->c_cflag, baud);
- clps_writel(ubrlcr | (quot - 1), UBRLCR(port));
-
- spin_unlock_irqrestore(&port->lock, flags);
+ writel(ubrlcr | (quot - 1), port->membase + UBRLCR_OFFSET);
}
static const char *uart_clps711x_type(struct uart_port *port)
@@ -322,14 +336,12 @@ static void uart_clps711x_config_port(struct uart_port *port, int flags)
port->type = PORT_CLPS711X;
}
-static void uart_clps711x_release_port(struct uart_port *port)
+static void uart_clps711x_nop_void(struct uart_port *port)
{
- /* Do nothing */
}
-static int uart_clps711x_request_port(struct uart_port *port)
+static int uart_clps711x_nop_int(struct uart_port *port)
{
- /* Do nothing */
return 0;
}
@@ -339,183 +351,237 @@ static const struct uart_ops uart_clps711x_ops = {
.get_mctrl = uart_clps711x_get_mctrl,
.stop_tx = uart_clps711x_stop_tx,
.start_tx = uart_clps711x_start_tx,
- .stop_rx = uart_clps711x_stop_rx,
- .enable_ms = uart_clps711x_enable_ms,
+ .stop_rx = uart_clps711x_nop_void,
+ .enable_ms = uart_clps711x_nop_void,
.break_ctl = uart_clps711x_break_ctl,
+ .set_ldisc = uart_clps711x_set_ldisc,
.startup = uart_clps711x_startup,
.shutdown = uart_clps711x_shutdown,
.set_termios = uart_clps711x_set_termios,
.type = uart_clps711x_type,
.config_port = uart_clps711x_config_port,
- .release_port = uart_clps711x_release_port,
- .request_port = uart_clps711x_request_port,
+ .release_port = uart_clps711x_nop_void,
+ .request_port = uart_clps711x_nop_int,
};
#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
static void uart_clps711x_console_putchar(struct uart_port *port, int ch)
{
- while (clps_readl(SYSFLG(port)) & SYSFLG_UTXFF)
- barrier();
+ struct clps711x_port *s = dev_get_drvdata(port->dev);
+ u32 sysflg = 0;
+
+ do {
+ regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
+ } while (sysflg & SYSFLG_UTXFF);
- clps_writew(ch, UARTDR(port));
+ writew(ch, port->membase + UARTDR_OFFSET);
}
static void uart_clps711x_console_write(struct console *co, const char *c,
unsigned n)
{
- struct clps711x_port *s = (struct clps711x_port *)co->data;
- struct uart_port *port = &s->port[co->index];
- u32 syscon;
-
- /* Ensure that the port is enabled */
- syscon = clps_readl(SYSCON(port));
- clps_writel(syscon | SYSCON_UARTEN, SYSCON(port));
+ struct uart_port *port = clps711x_uart.state[co->index].uart_port;
+ struct clps711x_port *s = dev_get_drvdata(port->dev);
+ u32 sysflg = 0;
uart_console_write(port, c, n, uart_clps711x_console_putchar);
/* Wait for transmitter to become empty */
- while (clps_readl(SYSFLG(port)) & SYSFLG_UBUSY)
- barrier();
-
- /* Restore the uart state */
- clps_writel(syscon, SYSCON(port));
+ do {
+ regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
+ } while (sysflg & SYSFLG_UBUSY);
}
-static void uart_clps711x_console_get_options(struct uart_port *port,
- int *baud, int *parity,
- int *bits)
+static int uart_clps711x_console_setup(struct console *co, char *options)
{
- if (clps_readl(SYSCON(port)) & SYSCON_UARTEN) {
- unsigned int ubrlcr, quot;
+ int baud = 38400, bits = 8, parity = 'n', flow = 'n';
+ int ret, index = co->index;
+ struct clps711x_port *s;
+ struct uart_port *port;
+ unsigned int quot;
+ u32 ubrlcr;
- ubrlcr = clps_readl(UBRLCR(port));
+ if (index < 0 || index >= UART_CLPS711X_NR)
+ return -EINVAL;
- *parity = 'n';
- if (ubrlcr & UBRLCR_PRTEN) {
- if (ubrlcr & UBRLCR_EVENPRT)
- *parity = 'e';
- else
- *parity = 'o';
- }
+ port = clps711x_uart.state[index].uart_port;
+ if (!port)
+ return -ENODEV;
- if ((ubrlcr & UBRLCR_WRDLEN_MASK) == UBRLCR_WRDLEN7)
- *bits = 7;
- else
- *bits = 8;
+ s = dev_get_drvdata(port->dev);
- quot = ubrlcr & UBRLCR_BAUD_MASK;
- *baud = port->uartclk / (16 * (quot + 1));
- }
-}
+ if (!options) {
+ u32 syscon = 0;
-static int uart_clps711x_console_setup(struct console *co, char *options)
-{
- int baud = 38400, bits = 8, parity = 'n', flow = 'n';
- struct clps711x_port *s = (struct clps711x_port *)co->data;
- struct uart_port *port = &s->port[(co->index > 0) ? co->index : 0];
+ regmap_read(s->syscon, SYSCON_OFFSET, &syscon);
+ if (syscon & SYSCON_UARTEN) {
+ ubrlcr = readl(port->membase + UBRLCR_OFFSET);
+
+ if (ubrlcr & UBRLCR_PRTEN) {
+ if (ubrlcr & UBRLCR_EVENPRT)
+ parity = 'e';
+ else
+ parity = 'o';
+ }
+
+ if ((ubrlcr & UBRLCR_WRDLEN_MASK) == UBRLCR_WRDLEN7)
+ bits = 7;
- if (options)
+ quot = ubrlcr & UBRLCR_BAUD_MASK;
+ baud = port->uartclk / (16 * (quot + 1));
+ }
+ } else
uart_parse_options(options, &baud, &parity, &bits, &flow);
- else
- uart_clps711x_console_get_options(port, &baud, &parity, &bits);
- return uart_set_options(port, co, baud, parity, bits, flow);
+ ret = uart_set_options(port, co, baud, parity, bits, flow);
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(s->syscon, SYSCON_OFFSET,
+ SYSCON_UARTEN, SYSCON_UARTEN);
}
+
+static struct console clps711x_console = {
+ .name = UART_CLPS711X_DEVNAME,
+ .device = uart_console_device,
+ .write = uart_clps711x_console_write,
+ .setup = uart_clps711x_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
#endif
static int uart_clps711x_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
+ int ret, index = np ? of_alias_get_id(np, "serial") : pdev->id;
struct clps711x_port *s;
- int ret, i;
+ struct resource *res;
+ struct clk *uart_clk;
- s = devm_kzalloc(&pdev->dev, sizeof(struct clps711x_port), GFP_KERNEL);
- if (!s) {
- dev_err(&pdev->dev, "Error allocating port structure\n");
+ if (index < 0 || index >= UART_CLPS711X_NR)
+ return -EINVAL;
+
+ s = devm_kzalloc(&pdev->dev, sizeof(*s), GFP_KERNEL);
+ if (!s)
return -ENOMEM;
+
+ uart_clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(uart_clk))
+ return PTR_ERR(uart_clk);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ s->port.membase = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(s->port.membase))
+ return PTR_ERR(s->port.membase);
+
+ s->port.irq = platform_get_irq(pdev, 0);
+ if (IS_ERR_VALUE(s->port.irq))
+ return s->port.irq;
+
+ s->rx_irq = platform_get_irq(pdev, 1);
+ if (IS_ERR_VALUE(s->rx_irq))
+ return s->rx_irq;
+
+ if (!np) {
+ char syscon_name[9];
+
+ sprintf(syscon_name, "syscon.%i", index + 1);
+ s->syscon = syscon_regmap_lookup_by_pdevname(syscon_name);
+ if (IS_ERR(s->syscon))
+ return PTR_ERR(s->syscon);
+
+ s->use_ms = !index;
+ } else {
+ s->syscon = syscon_regmap_lookup_by_phandle(np, "syscon");
+ if (IS_ERR(s->syscon))
+ return PTR_ERR(s->syscon);
+
+ if (!index)
+ s->use_ms = of_property_read_bool(np, "uart-use-ms");
}
+
+ s->port.line = index;
+ s->port.dev = &pdev->dev;
+ s->port.iotype = UPIO_MEM32;
+ s->port.mapbase = res->start;
+ s->port.type = PORT_CLPS711X;
+ s->port.fifosize = 16;
+ s->port.flags = UPF_SKIP_TEST | UPF_FIXED_TYPE;
+ s->port.uartclk = clk_get_rate(uart_clk);
+ s->port.ops = &uart_clps711x_ops;
+
platform_set_drvdata(pdev, s);
- s->uart_clk = devm_clk_get(&pdev->dev, "uart");
- if (IS_ERR(s->uart_clk)) {
- dev_err(&pdev->dev, "Can't get UART clocks\n");
- return PTR_ERR(s->uart_clk);
- }
+ ret = uart_add_one_port(&clps711x_uart, &s->port);
+ if (ret)
+ return ret;
- s->uart.owner = THIS_MODULE;
- s->uart.dev_name = "ttyCL";
- s->uart.major = UART_CLPS711X_MAJOR;
- s->uart.minor = UART_CLPS711X_MINOR;
- s->uart.nr = UART_CLPS711X_NR;
-#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
- s->uart.cons = &s->console;
- s->uart.cons->device = uart_console_device;
- s->uart.cons->write = uart_clps711x_console_write;
- s->uart.cons->setup = uart_clps711x_console_setup;
- s->uart.cons->flags = CON_PRINTBUFFER;
- s->uart.cons->index = -1;
- s->uart.cons->data = s;
- strcpy(s->uart.cons->name, "ttyCL");
-#endif
- ret = uart_register_driver(&s->uart);
+ /* Disable port */
+ if (!uart_console(&s->port))
+ regmap_update_bits(s->syscon, SYSCON_OFFSET, SYSCON_UARTEN, 0);
+
+ s->tx_enabled = 1;
+
+ ret = devm_request_irq(&pdev->dev, s->port.irq, uart_clps711x_int_tx, 0,
+ dev_name(&pdev->dev), &s->port);
if (ret) {
- dev_err(&pdev->dev, "Registering UART driver failed\n");
- devm_clk_put(&pdev->dev, s->uart_clk);
+ uart_remove_one_port(&clps711x_uart, &s->port);
return ret;
}
- for (i = 0; i < UART_CLPS711X_NR; i++) {
- s->port[i].line = i;
- s->port[i].dev = &pdev->dev;
- s->port[i].irq = TX_IRQ(&s->port[i]);
- s->port[i].iobase = SYSCON(&s->port[i]);
- s->port[i].type = PORT_CLPS711X;
- s->port[i].fifosize = 16;
- s->port[i].flags = UPF_SKIP_TEST | UPF_FIXED_TYPE;
- s->port[i].uartclk = clk_get_rate(s->uart_clk);
- s->port[i].ops = &uart_clps711x_ops;
- WARN_ON(uart_add_one_port(&s->uart, &s->port[i]));
- }
+ ret = devm_request_irq(&pdev->dev, s->rx_irq, uart_clps711x_int_rx, 0,
+ dev_name(&pdev->dev), &s->port);
+ if (ret)
+ uart_remove_one_port(&clps711x_uart, &s->port);
- return 0;
+ return ret;
}
static int uart_clps711x_remove(struct platform_device *pdev)
{
struct clps711x_port *s = platform_get_drvdata(pdev);
- int i;
- for (i = 0; i < UART_CLPS711X_NR; i++)
- uart_remove_one_port(&s->uart, &s->port[i]);
-
- devm_clk_put(&pdev->dev, s->uart_clk);
- uart_unregister_driver(&s->uart);
-
- return 0;
+ return uart_remove_one_port(&clps711x_uart, &s->port);
}
-static struct platform_driver clps711x_uart_driver = {
+static const struct of_device_id __maybe_unused clps711x_uart_dt_ids[] = {
+ { .compatible = "cirrus,clps711x-uart", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, clps711x_uart_dt_ids);
+
+static struct platform_driver clps711x_uart_platform = {
.driver = {
- .name = UART_CLPS711X_NAME,
- .owner = THIS_MODULE,
+ .name = "clps711x-uart",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(clps711x_uart_dt_ids),
},
.probe = uart_clps711x_probe,
.remove = uart_clps711x_remove,
};
-module_platform_driver(clps711x_uart_driver);
-
-static struct platform_device clps711x_uart_device = {
- .name = UART_CLPS711X_NAME,
-};
static int __init uart_clps711x_init(void)
{
- return platform_device_register(&clps711x_uart_device);
+ int ret;
+
+#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
+ clps711x_uart.cons = &clps711x_console;
+ clps711x_console.data = &clps711x_uart;
+#endif
+
+ ret = uart_register_driver(&clps711x_uart);
+ if (ret)
+ return ret;
+
+ return platform_driver_register(&clps711x_uart_platform);
}
module_init(uart_clps711x_init);
static void __exit uart_clps711x_exit(void)
{
- platform_device_unregister(&clps711x_uart_device);
+ platform_driver_unregister(&clps711x_uart_platform);
+ uart_unregister_driver(&clps711x_uart);
}
module_exit(uart_clps711x_exit);
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index 1a535f70dc41..7d76214612c7 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -41,6 +41,8 @@
#include <linux/bootmem.h>
#include <linux/dma-mapping.h>
#include <linux/fs_uart_pd.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
@@ -1207,7 +1209,7 @@ static int cpm_uart_init_port(struct device_node *np,
pinfo->port.fifosize = pinfo->tx_nrfifos * pinfo->tx_fifosize;
spin_lock_init(&pinfo->port.lock);
- pinfo->port.irq = of_irq_to_resource(np, 0, NULL);
+ pinfo->port.irq = irq_of_parse_and_map(np, 0);
if (pinfo->port.irq == NO_IRQ) {
ret = -EINVAL;
goto out_pram;
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
index 18f79575894a..6d3b22e93246 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
@@ -29,7 +29,6 @@
#include <linux/tty.h>
#include <linux/gfp.h>
#include <linux/ioport.h>
-#include <linux/init.h>
#include <linux/serial.h>
#include <linux/console.h>
#include <linux/sysrq.h>
@@ -45,6 +44,7 @@
#include <linux/kernel.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include "cpm_uart.h"
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
index a4927e66e741..f46d2ca87209 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
@@ -29,7 +29,6 @@
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/slab.h>
-#include <linux/init.h>
#include <linux/serial.h>
#include <linux/console.h>
#include <linux/sysrq.h>
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 477f22f773fc..690bdea0a0c1 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -2153,7 +2153,7 @@ static void flush_timeout_function(unsigned long data)
fast_timers[info->line].function = NULL;
serial_fast_timer_expired++;
- TIMERD(DEBUG_LOG(info->line, "flush_timout %i ", info->line));
+ TIMERD(DEBUG_LOG(info->line, "flush_timeout %i ", info->line));
TIMERD(DEBUG_LOG(info->line, "num expired: %i\n", serial_fast_timer_expired));
check_flush_timeout(info);
}
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index af286e6713eb..590390970996 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -1008,7 +1008,7 @@ static int ifx_spi_spi_probe(struct spi_device *spi)
return -ENODEV;
}
- pl_data = (struct ifx_modem_platform_data *)dev_get_platdata(&spi->dev);
+ pl_data = dev_get_platdata(&spi->dev);
if (!pl_data) {
dev_err(&spi->dev, "missing platform data!");
return -ENODEV;
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 042aa077b5b3..d799140e53b6 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -223,8 +223,7 @@ struct imx_port {
struct dma_chan *dma_chan_rx, *dma_chan_tx;
struct scatterlist rx_sgl, tx_sgl[2];
void *rx_buf;
- unsigned int rx_bytes, tx_bytes;
- struct work_struct tsk_dma_rx, tsk_dma_tx;
+ unsigned int tx_bytes;
unsigned int dma_tx_nents;
wait_queue_head_t dma_wait;
};
@@ -505,34 +504,25 @@ static void dma_tx_callback(void *data)
dev_dbg(sport->port.dev, "exit in %s.\n", __func__);
return;
}
-
- schedule_work(&sport->tsk_dma_tx);
}
-static void dma_tx_work(struct work_struct *w)
+static void imx_dma_tx(struct imx_port *sport)
{
- struct imx_port *sport = container_of(w, struct imx_port, tsk_dma_tx);
struct circ_buf *xmit = &sport->port.state->xmit;
struct scatterlist *sgl = sport->tx_sgl;
struct dma_async_tx_descriptor *desc;
struct dma_chan *chan = sport->dma_chan_tx;
struct device *dev = sport->port.dev;
enum dma_status status;
- unsigned long flags;
int ret;
- status = chan->device->device_tx_status(chan, (dma_cookie_t)0, NULL);
+ status = dmaengine_tx_status(chan, (dma_cookie_t)0, NULL);
if (DMA_IN_PROGRESS == status)
return;
- spin_lock_irqsave(&sport->port.lock, flags);
sport->tx_bytes = uart_circ_chars_pending(xmit);
- if (sport->tx_bytes == 0) {
- spin_unlock_irqrestore(&sport->port.lock, flags);
- return;
- }
- if (xmit->tail > xmit->head) {
+ if (xmit->tail > xmit->head && xmit->head > 0) {
sport->dma_tx_nents = 2;
sg_init_table(sgl, 2);
sg_set_buf(sgl, xmit->buf + xmit->tail,
@@ -542,7 +532,6 @@ static void dma_tx_work(struct work_struct *w)
sport->dma_tx_nents = 1;
sg_init_one(sgl, xmit->buf + xmit->tail, sport->tx_bytes);
}
- spin_unlock_irqrestore(&sport->port.lock, flags);
ret = dma_map_sg(dev, sgl, sport->dma_tx_nents, DMA_TO_DEVICE);
if (ret == 0) {
@@ -609,11 +598,7 @@ static void imx_start_tx(struct uart_port *port)
}
if (sport->dma_is_enabled) {
- /*
- * We may in the interrupt context, so arise a work_struct to
- * do the real job.
- */
- schedule_work(&sport->tsk_dma_tx);
+ imx_dma_tx(sport);
return;
}
@@ -732,6 +717,7 @@ out:
return IRQ_HANDLED;
}
+static int start_rx_dma(struct imx_port *sport);
/*
* If the RXFIFO is filled with some data, and then we
* arise a DMA operation to receive them.
@@ -750,7 +736,7 @@ static void imx_dma_rxint(struct imx_port *sport)
writel(temp, sport->port.membase + UCR1);
/* tell the DMA to receive the data. */
- schedule_work(&sport->tsk_dma_rx);
+ start_rx_dma(sport);
}
}
@@ -795,8 +781,15 @@ static irqreturn_t imx_int(int irq, void *dev_id)
static unsigned int imx_tx_empty(struct uart_port *port)
{
struct imx_port *sport = (struct imx_port *)port;
+ unsigned int ret;
+
+ ret = (readl(sport->port.membase + USR2) & USR2_TXDC) ? TIOCSER_TEMT : 0;
- return (readl(sport->port.membase + USR2) & USR2_TXDC) ? TIOCSER_TEMT : 0;
+ /* If the TX DMA is working, return 0. */
+ if (sport->dma_is_enabled && sport->dma_is_txing)
+ ret = 0;
+
+ return ret;
}
/*
@@ -813,6 +806,9 @@ static unsigned int imx_get_mctrl(struct uart_port *port)
if (readl(sport->port.membase + UCR2) & UCR2_CTS)
tmp |= TIOCM_RTS;
+ if (readl(sport->port.membase + uts_reg(sport)) & UTS_LOOP)
+ tmp |= TIOCM_LOOP;
+
return tmp;
}
@@ -828,6 +824,11 @@ static void imx_set_mctrl(struct uart_port *port, unsigned int mctrl)
temp |= UCR2_CTS;
writel(temp, sport->port.membase + UCR2);
+
+ temp = readl(sport->port.membase + uts_reg(sport)) & ~UTS_LOOP;
+ if (mctrl & TIOCM_LOOP)
+ temp |= UTS_LOOP;
+ writel(temp, sport->port.membase + uts_reg(sport));
}
/*
@@ -865,22 +866,6 @@ static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
}
#define RX_BUF_SIZE (PAGE_SIZE)
-static int start_rx_dma(struct imx_port *sport);
-static void dma_rx_work(struct work_struct *w)
-{
- struct imx_port *sport = container_of(w, struct imx_port, tsk_dma_rx);
- struct tty_port *port = &sport->port.state->port;
-
- if (sport->rx_bytes) {
- tty_insert_flip_string(port, sport->rx_buf, sport->rx_bytes);
- tty_flip_buffer_push(port);
- sport->rx_bytes = 0;
- }
-
- if (sport->dma_is_rxing)
- start_rx_dma(sport);
-}
-
static void imx_rx_dma_done(struct imx_port *sport)
{
unsigned long temp;
@@ -912,6 +897,7 @@ static void dma_rx_callback(void *data)
struct imx_port *sport = data;
struct dma_chan *chan = sport->dma_chan_rx;
struct scatterlist *sgl = &sport->rx_sgl;
+ struct tty_port *port = &sport->port.state->port;
struct dma_tx_state state;
enum dma_status status;
unsigned int count;
@@ -919,13 +905,15 @@ static void dma_rx_callback(void *data)
/* unmap it first */
dma_unmap_sg(sport->port.dev, sgl, 1, DMA_FROM_DEVICE);
- status = chan->device->device_tx_status(chan, (dma_cookie_t)0, &state);
+ status = dmaengine_tx_status(chan, (dma_cookie_t)0, &state);
count = RX_BUF_SIZE - state.residue;
dev_dbg(sport->port.dev, "We get %d bytes.\n", count);
if (count) {
- sport->rx_bytes = count;
- schedule_work(&sport->tsk_dma_rx);
+ tty_insert_flip_string(port, sport->rx_buf, count);
+ tty_flip_buffer_push(port);
+
+ start_rx_dma(sport);
} else
imx_rx_dma_done(sport);
}
@@ -1007,7 +995,6 @@ static int imx_uart_dma_init(struct imx_port *sport)
ret = -ENOMEM;
goto err;
}
- sport->rx_bytes = 0;
/* Prepare for TX : */
sport->dma_chan_tx = dma_request_slave_channel(dev, "tx");
@@ -1038,11 +1025,7 @@ err:
static void imx_enable_dma(struct imx_port *sport)
{
unsigned long temp;
- struct tty_port *port = &sport->port.state->port;
- port->low_latency = 1;
- INIT_WORK(&sport->tsk_dma_tx, dma_tx_work);
- INIT_WORK(&sport->tsk_dma_rx, dma_rx_work);
init_waitqueue_head(&sport->dma_wait);
/* set UCR1 */
@@ -1063,7 +1046,6 @@ static void imx_enable_dma(struct imx_port *sport)
static void imx_disable_dma(struct imx_port *sport)
{
unsigned long temp;
- struct tty_port *port = &sport->port.state->port;
/* clear UCR1 */
temp = readl(sport->port.membase + UCR1);
@@ -1081,7 +1063,6 @@ static void imx_disable_dma(struct imx_port *sport)
writel(temp, sport->port.membase + UCR4);
sport->dma_is_enabled = 0;
- port->low_latency = 0;
}
/* half the RX buffer size */
@@ -1303,6 +1284,16 @@ static void imx_shutdown(struct uart_port *port)
clk_disable_unprepare(sport->clk_ipg);
}
+static void imx_flush_buffer(struct uart_port *port)
+{
+ struct imx_port *sport = (struct imx_port *)port;
+
+ if (sport->dma_is_enabled) {
+ sport->tx_bytes = 0;
+ dmaengine_terminate_all(sport->dma_chan_tx);
+ }
+}
+
static void
imx_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
@@ -1539,7 +1530,7 @@ imx_verify_port(struct uart_port *port, struct serial_struct *ser)
ret = -EINVAL;
if (sport->port.uartclk / 16 != ser->baud_base)
ret = -EINVAL;
- if ((void *)sport->port.mapbase != ser->iomem_base)
+ if (sport->port.mapbase != (unsigned long)ser->iomem_base)
ret = -EINVAL;
if (sport->port.iobase != ser->port)
ret = -EINVAL;
@@ -1623,6 +1614,7 @@ static struct uart_ops imx_pops = {
.break_ctl = imx_break_ctl,
.startup = imx_startup,
.shutdown = imx_shutdown,
+ .flush_buffer = imx_flush_buffer,
.set_termios = imx_set_termios,
.type = imx_type,
.release_port = imx_release_port,
diff --git a/drivers/tty/serial/ip22zilog.c b/drivers/tty/serial/ip22zilog.c
index cb3c81eb0996..1d9420548e16 100644
--- a/drivers/tty/serial/ip22zilog.c
+++ b/drivers/tty/serial/ip22zilog.c
@@ -832,7 +832,7 @@ ip22zilog_convert_to_zs(struct uart_ip22zilog_port *up, unsigned int cflag,
up->curregs[5] |= Tx8;
up->parity_mask = 0xff;
break;
- };
+ }
up->curregs[4] &= ~0x0c;
if (cflag & CSTOPB)
up->curregs[4] |= SB2;
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c
index 5dafcf1c227b..5f673b7ca50e 100644
--- a/drivers/tty/serial/kgdb_nmi.c
+++ b/drivers/tty/serial/kgdb_nmi.c
@@ -15,7 +15,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/compiler.h>
-#include <linux/init.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/atomic.h>
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index b2e707aa603a..8d71e4047bb3 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -690,7 +690,7 @@ static void max310x_handle_tx(struct uart_port *port)
max310x_port_write(port, MAX310X_THR_REG,
xmit->buf[xmit->tail]);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- };
+ }
}
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
diff --git a/drivers/tty/serial/mfd.c b/drivers/tty/serial/mfd.c
index d3db042f649e..52c930fac210 100644
--- a/drivers/tty/serial/mfd.c
+++ b/drivers/tty/serial/mfd.c
@@ -293,7 +293,7 @@ static void serial_hsu_enable_ms(struct uart_port *port)
serial_out(up, UART_IER, up->ier);
}
-void hsu_dma_tx(struct uart_hsu_port *up)
+static void hsu_dma_tx(struct uart_hsu_port *up)
{
struct circ_buf *xmit = &up->port.state->xmit;
struct hsu_dma_buffer *dbuf = &up->txbuf;
@@ -340,7 +340,8 @@ void hsu_dma_tx(struct uart_hsu_port *up)
}
/* The buffer is already cache coherent */
-void hsu_dma_start_rx_chan(struct hsu_dma_chan *rxc, struct hsu_dma_buffer *dbuf)
+static void hsu_dma_start_rx_chan(struct hsu_dma_chan *rxc,
+ struct hsu_dma_buffer *dbuf)
{
dbuf->ofs = 0;
@@ -386,7 +387,8 @@ static void serial_hsu_stop_tx(struct uart_port *port)
/* This is always called in spinlock protected mode, so
* modify timeout timer is safe here */
-void hsu_dma_rx(struct uart_hsu_port *up, u32 int_sts, unsigned long *flags)
+static void hsu_dma_rx(struct uart_hsu_port *up, u32 int_sts,
+ unsigned long *flags)
{
struct hsu_dma_buffer *dbuf = &up->rxbuf;
struct hsu_dma_chan *chan = up->rxc;
@@ -1183,7 +1185,7 @@ static struct console serial_hsu_console = {
#define SERIAL_HSU_CONSOLE NULL
#endif
-struct uart_ops serial_hsu_pops = {
+static struct uart_ops serial_hsu_pops = {
.tx_empty = serial_hsu_tx_empty,
.set_mctrl = serial_hsu_set_mctrl,
.get_mctrl = serial_hsu_get_mctrl,
@@ -1451,7 +1453,6 @@ static void serial_hsu_remove(struct pci_dev *pdev)
uart_remove_one_port(&serial_hsu_reg, &up->port);
}
- pci_set_drvdata(pdev, NULL);
free_irq(pdev->irq, priv);
pci_disable_device(pdev);
}
@@ -1504,4 +1505,4 @@ module_init(hsu_pci_init);
module_exit(hsu_pci_exit);
MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:medfield-hsu");
+MODULE_DEVICE_TABLE(pci, pci_ids);
diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c
index 5be1df39f9f5..ec06505e3ae6 100644
--- a/drivers/tty/serial/mpc52xx_uart.c
+++ b/drivers/tty/serial/mpc52xx_uart.c
@@ -1301,7 +1301,6 @@ static struct uart_ops mpc52xx_uart_ops = {
.shutdown = mpc52xx_uart_shutdown,
.set_termios = mpc52xx_uart_set_termios,
/* .pm = mpc52xx_uart_pm, Not supported yet */
-/* .set_wake = mpc52xx_uart_set_wake, Not supported yet */
.type = mpc52xx_uart_type,
.release_port = mpc52xx_uart_release_port,
.request_port = mpc52xx_uart_request_port,
@@ -1766,7 +1765,7 @@ mpc52xx_uart_of_remove(struct platform_device *op)
static int
mpc52xx_uart_of_suspend(struct platform_device *op, pm_message_t state)
{
- struct uart_port *port = (struct uart_port *) platform_get_drvdata(op);
+ struct uart_port *port = platform_get_drvdata(op);
if (port)
uart_suspend_port(&mpc52xx_uart_driver, port);
@@ -1777,7 +1776,7 @@ mpc52xx_uart_of_suspend(struct platform_device *op, pm_message_t state)
static int
mpc52xx_uart_of_resume(struct platform_device *op)
{
- struct uart_port *port = (struct uart_port *) platform_get_drvdata(op);
+ struct uart_port *port = platform_get_drvdata(op);
if (port)
uart_resume_port(&mpc52xx_uart_driver, port);
diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c
index 8d702677acc5..e30a3ca3cea3 100644
--- a/drivers/tty/serial/mpsc.c
+++ b/drivers/tty/serial/mpsc.c
@@ -2030,7 +2030,7 @@ static void mpsc_drv_get_platform_data(struct mpsc_port_info *pi,
{
struct mpsc_pdata *pdata;
- pdata = (struct mpsc_pdata *)dev_get_platdata(&pd->dev);
+ pdata = dev_get_platdata(&pd->dev);
pi->port.uartclk = pdata->brg_clk_freq;
pi->port.iotype = UPIO_MEM;
diff --git a/drivers/tty/serial/mrst_max3110.c b/drivers/tty/serial/mrst_max3110.c
index a67e7081f001..db0448ae59dc 100644
--- a/drivers/tty/serial/mrst_max3110.c
+++ b/drivers/tty/serial/mrst_max3110.c
@@ -43,6 +43,7 @@
#include <linux/kthread.h>
#include <linux/spi/spi.h>
+#include <linux/pm.h>
#include "mrst_max3110.h"
@@ -61,6 +62,7 @@ struct uart_max3110 {
struct task_struct *main_thread;
struct task_struct *read_thread;
struct mutex thread_mutex;
+ struct mutex io_mutex;
u32 baud;
u16 cur_conf;
@@ -90,6 +92,7 @@ static int max3110_write_then_read(struct uart_max3110 *max,
struct spi_transfer x;
int ret;
+ mutex_lock(&max->io_mutex);
spi_message_init(&message);
memset(&x, 0, sizeof x);
x.len = len;
@@ -104,6 +107,7 @@ static int max3110_write_then_read(struct uart_max3110 *max,
/* Do the i/o */
ret = spi_sync(spi, &message);
+ mutex_unlock(&max->io_mutex);
return ret;
}
@@ -491,19 +495,9 @@ static int serial_m3110_startup(struct uart_port *port)
port->state->port.low_latency = 1;
if (max->irq) {
- max->read_thread = NULL;
- ret = request_irq(max->irq, serial_m3110_irq,
- IRQ_TYPE_EDGE_FALLING, "max3110", max);
- if (ret) {
- max->irq = 0;
- pr_err(PR_FMT "unable to allocate IRQ, polling\n");
- } else {
- /* Enable RX IRQ only */
- config |= WC_RXA_IRQ_ENABLE;
- }
- }
-
- if (max->irq == 0) {
+ /* Enable RX IRQ only */
+ config |= WC_RXA_IRQ_ENABLE;
+ } else {
/* If IRQ is disabled, start a read thread for input data */
max->read_thread =
kthread_run(max3110_read_thread, max, "max3110_read");
@@ -517,8 +511,6 @@ static int serial_m3110_startup(struct uart_port *port)
ret = max3110_out(max, config);
if (ret) {
- if (max->irq)
- free_irq(max->irq, max);
if (max->read_thread)
kthread_stop(max->read_thread);
max->read_thread = NULL;
@@ -540,9 +532,6 @@ static void serial_m3110_shutdown(struct uart_port *port)
max->read_thread = NULL;
}
- if (max->irq)
- free_irq(max->irq, max);
-
/* Disable interrupts from this port */
config = WC_TAG | WC_SW_SHDI;
max3110_out(max, config);
@@ -749,7 +738,8 @@ static int serial_m3110_suspend(struct device *dev)
struct spi_device *spi = to_spi_device(dev);
struct uart_max3110 *max = spi_get_drvdata(spi);
- disable_irq(max->irq);
+ if (max->irq > 0)
+ disable_irq(max->irq);
uart_suspend_port(&serial_m3110_reg, &max->port);
max3110_out(max, max->cur_conf | WC_SW_SHDI);
return 0;
@@ -762,7 +752,8 @@ static int serial_m3110_resume(struct device *dev)
max3110_out(max, max->cur_conf);
uart_resume_port(&serial_m3110_reg, &max->port);
- enable_irq(max->irq);
+ if (max->irq > 0)
+ enable_irq(max->irq);
return 0;
}
@@ -803,6 +794,7 @@ static int serial_m3110_probe(struct spi_device *spi)
max->irq = (u16)spi->irq;
mutex_init(&max->thread_mutex);
+ mutex_init(&max->io_mutex);
max->word_7bits = 0;
max->parity = 0;
@@ -840,6 +832,16 @@ static int serial_m3110_probe(struct spi_device *spi)
goto err_kthread;
}
+ if (max->irq) {
+ ret = request_irq(max->irq, serial_m3110_irq,
+ IRQ_TYPE_EDGE_FALLING, "max3110", max);
+ if (ret) {
+ max->irq = 0;
+ dev_warn(&spi->dev,
+ "unable to allocate IRQ, will use polling method\n");
+ }
+ }
+
spi_set_drvdata(spi, max);
pmax = max;
@@ -867,6 +869,9 @@ static int serial_m3110_remove(struct spi_device *dev)
free_page((unsigned long)max->con_xmit.buf);
+ if (max->irq)
+ free_irq(max->irq, max);
+
if (max->main_thread)
kthread_stop(max->main_thread);
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 10e9d70b5c40..aa97fd845b4d 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -39,6 +39,7 @@
#include <asm/cacheflush.h>
#define MXS_AUART_PORTS 5
+#define MXS_AUART_FIFO_SIZE 16
#define AUART_CTRL0 0x00000000
#define AUART_CTRL0_SET 0x00000004
@@ -548,6 +549,9 @@ static int mxs_auart_dma_init(struct mxs_auart_port *s)
s->flags |= MXS_AUART_DMA_ENABLED;
dev_dbg(s->dev, "enabled the DMA support.");
+ /* The DMA buffer is now the FIFO the TTY subsystem can use */
+ s->port.fifosize = UART_XMIT_SIZE;
+
return 0;
err_out:
@@ -730,9 +734,12 @@ static void mxs_auart_reset(struct uart_port *u)
static int mxs_auart_startup(struct uart_port *u)
{
+ int ret;
struct mxs_auart_port *s = to_auart_port(u);
- clk_prepare_enable(s->clk);
+ ret = clk_prepare_enable(s->clk);
+ if (ret)
+ return ret;
writel(AUART_CTRL0_CLKGATE, u->membase + AUART_CTRL0_CLR);
@@ -741,6 +748,9 @@ static int mxs_auart_startup(struct uart_port *u)
writel(AUART_INTR_RXIEN | AUART_INTR_RTIEN | AUART_INTR_CTSMIEN,
u->membase + AUART_INTR);
+ /* Reset FIFO size (it could have changed if DMA was enabled) */
+ u->fifosize = MXS_AUART_FIFO_SIZE;
+
/*
* Enable fifo so all four bytes of a DMA word are written to
* output (otherwise, only the LSB is written, ie. 1 in 4 bytes)
@@ -950,7 +960,9 @@ auart_console_setup(struct console *co, char *options)
if (!s)
return -ENODEV;
- clk_prepare_enable(s->clk);
+ ret = clk_prepare_enable(s->clk);
+ if (ret)
+ return ret;
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
@@ -1056,7 +1068,7 @@ static int mxs_auart_probe(struct platform_device *pdev)
s->port.membase = ioremap(r->start, resource_size(r));
s->port.ops = &mxs_auart_ops;
s->port.iotype = UPIO_MEM;
- s->port.fifosize = 16;
+ s->port.fifosize = MXS_AUART_FIFO_SIZE;
s->port.uartclk = clk_get_rate(s->clk);
s->port.type = PORT_IMX;
s->port.dev = s->dev = &pdev->dev;
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index 2caf9c6f6149..99246606a256 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -9,7 +9,6 @@
* 2 of the License, or (at your option) any later version.
*
*/
-#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 816d1a23f9d0..fa511ebab67c 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -39,6 +39,7 @@
#include <linux/irq.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
+#include <linux/of_irq.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/platform_data/serial-omap.h>
@@ -134,6 +135,7 @@ struct uart_omap_port {
struct uart_port port;
struct uart_omap_dma uart_dma;
struct device *dev;
+ int wakeirq;
unsigned char ier;
unsigned char lcr;
@@ -175,7 +177,7 @@ struct uart_omap_port {
bool is_suspending;
};
-#define to_uart_omap_port(p) ((container_of((p), struct uart_omap_port, port)))
+#define to_uart_omap_port(p) ((container_of((p), struct uart_omap_port, port)))
static struct uart_omap_port *ui[OMAP_MAX_HSUART_PORTS];
@@ -214,10 +216,23 @@ static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
return pdata->get_context_loss_count(up->dev);
}
+static inline void serial_omap_enable_wakeirq(struct uart_omap_port *up,
+ bool enable)
+{
+ if (!up->wakeirq)
+ return;
+
+ if (enable)
+ enable_irq(up->wakeirq);
+ else
+ disable_irq(up->wakeirq);
+}
+
static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
{
struct omap_uart_port_info *pdata = dev_get_platdata(up->dev);
+ serial_omap_enable_wakeirq(up, enable);
if (!pdata || !pdata->enable_wakeup)
return;
@@ -242,12 +257,12 @@ serial_omap_baud_is_mode16(struct uart_port *port, unsigned int baud)
unsigned int n16 = port->uartclk / (16 * baud);
int baudAbsDiff13 = baud - (port->uartclk / (13 * n13));
int baudAbsDiff16 = baud - (port->uartclk / (16 * n16));
- if(baudAbsDiff13 < 0)
+ if (baudAbsDiff13 < 0)
baudAbsDiff13 = -baudAbsDiff13;
- if(baudAbsDiff16 < 0)
+ if (baudAbsDiff16 < 0)
baudAbsDiff16 = -baudAbsDiff16;
- return (baudAbsDiff13 > baudAbsDiff16);
+ return (baudAbsDiff13 >= baudAbsDiff16);
}
/*
@@ -258,13 +273,13 @@ serial_omap_baud_is_mode16(struct uart_port *port, unsigned int baud)
static unsigned int
serial_omap_get_divisor(struct uart_port *port, unsigned int baud)
{
- unsigned int divisor;
+ unsigned int mode;
if (!serial_omap_baud_is_mode16(port, baud))
- divisor = 13;
+ mode = 13;
else
- divisor = 16;
- return port->uartclk/(baud * divisor);
+ mode = 16;
+ return port->uartclk/(mode * baud);
}
static void serial_omap_enable_ms(struct uart_port *port)
@@ -283,28 +298,40 @@ static void serial_omap_enable_ms(struct uart_port *port)
static void serial_omap_stop_tx(struct uart_port *port)
{
struct uart_omap_port *up = to_uart_omap_port(port);
- struct circ_buf *xmit = &up->port.state->xmit;
int res;
pm_runtime_get_sync(up->dev);
- /* handle rs485 */
+ /* Handle RS-485 */
if (up->rs485.flags & SER_RS485_ENABLED) {
- /* do nothing if current tx not yet completed */
- res = serial_in(up, UART_LSR) & UART_LSR_TEMT;
- if (!res)
- return;
-
- /* if there's no more data to send, turn off rts */
- if (uart_circ_empty(xmit)) {
- /* if rts not already disabled */
+ if (up->scr & OMAP_UART_SCR_TX_EMPTY) {
+ /* THR interrupt is fired when both TX FIFO and TX
+ * shift register are empty. This means there's nothing
+ * left to transmit now, so make sure the THR interrupt
+ * is fired when TX FIFO is below the trigger level,
+ * disable THR interrupts and toggle the RS-485 GPIO
+ * data direction pin if needed.
+ */
+ up->scr &= ~OMAP_UART_SCR_TX_EMPTY;
+ serial_out(up, UART_OMAP_SCR, up->scr);
res = (up->rs485.flags & SER_RS485_RTS_AFTER_SEND) ? 1 : 0;
if (gpio_get_value(up->rts_gpio) != res) {
- if (up->rs485.delay_rts_after_send > 0) {
+ if (up->rs485.delay_rts_after_send > 0)
mdelay(up->rs485.delay_rts_after_send);
- }
gpio_set_value(up->rts_gpio, res);
}
+ } else {
+ /* We're asked to stop, but there's still stuff in the
+ * UART FIFO, so make sure the THR interrupt is fired
+ * when both TX FIFO and TX shift register are empty.
+ * The next THR interrupt (if no transmission is started
+ * in the meantime) will indicate the end of a
+ * transmission. Therefore we _don't_ disable THR
+ * interrupts in this situation.
+ */
+ up->scr |= OMAP_UART_SCR_TX_EMPTY;
+ serial_out(up, UART_OMAP_SCR, up->scr);
+ return;
}
}
@@ -384,15 +411,18 @@ static void serial_omap_start_tx(struct uart_port *port)
pm_runtime_get_sync(up->dev);
- /* handle rs485 */
+ /* Handle RS-485 */
if (up->rs485.flags & SER_RS485_ENABLED) {
+ /* Fire THR interrupts when FIFO is below trigger level */
+ up->scr &= ~OMAP_UART_SCR_TX_EMPTY;
+ serial_out(up, UART_OMAP_SCR, up->scr);
+
/* if rts not already enabled */
res = (up->rs485.flags & SER_RS485_RTS_ON_SEND) ? 1 : 0;
if (gpio_get_value(up->rts_gpio) != res) {
gpio_set_value(up->rts_gpio, res);
- if (up->rs485.delay_rts_before_send > 0) {
+ if (up->rs485.delay_rts_before_send > 0)
mdelay(up->rs485.delay_rts_before_send);
- }
}
}
@@ -699,6 +729,20 @@ static int serial_omap_startup(struct uart_port *port)
if (retval)
return retval;
+ /* Optional wake-up IRQ */
+ if (up->wakeirq) {
+ retval = request_irq(up->wakeirq, serial_omap_irq,
+ up->port.irqflags, up->name, up);
+ if (retval) {
+ free_irq(up->port.irq, up);
+ return retval;
+ }
+ disable_irq(up->wakeirq);
+ } else {
+ dev_info(up->port.dev, "no wakeirq for uart%d\n",
+ up->port.line);
+ }
+
dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line);
pm_runtime_get_sync(up->dev);
@@ -787,6 +831,8 @@ static void serial_omap_shutdown(struct uart_port *port)
pm_runtime_mark_last_busy(up->dev);
pm_runtime_put_autosuspend(up->dev);
free_irq(up->port.irq, up);
+ if (up->wakeirq)
+ free_irq(up->wakeirq, up);
}
static void serial_omap_uart_qos_work(struct work_struct *work)
@@ -938,7 +984,7 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
*/
/* Set receive FIFO threshold to 16 characters and
- * transmit FIFO threshold to 16 spaces
+ * transmit FIFO threshold to 32 spaces
*/
up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK;
up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK;
@@ -1060,15 +1106,6 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line);
}
-static int serial_omap_set_wake(struct uart_port *port, unsigned int state)
-{
- struct uart_omap_port *up = to_uart_omap_port(port);
-
- serial_omap_enable_wakeup(up, state);
-
- return 0;
-}
-
static void
serial_omap_pm(struct uart_port *port, unsigned int state,
unsigned int oldstate)
@@ -1353,6 +1390,15 @@ serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
up->ier = mode;
serial_out(up, UART_IER, up->ier);
+ /* If RS-485 is disabled, make sure the THR interrupt is fired when
+ * TX FIFO is below the trigger level.
+ */
+ if (!(up->rs485.flags & SER_RS485_ENABLED) &&
+ (up->scr & OMAP_UART_SCR_TX_EMPTY)) {
+ up->scr &= ~OMAP_UART_SCR_TX_EMPTY;
+ serial_out(up, UART_OMAP_SCR, up->scr);
+ }
+
spin_unlock_irqrestore(&up->port.lock, flags);
pm_runtime_mark_last_busy(up->dev);
pm_runtime_put_autosuspend(up->dev);
@@ -1401,7 +1447,6 @@ static struct uart_ops serial_omap_pops = {
.shutdown = serial_omap_shutdown,
.set_termios = serial_omap_set_termios,
.pm = serial_omap_pm,
- .set_wake = serial_omap_set_wake,
.type = serial_omap_type,
.release_port = serial_omap_release_port,
.request_port = serial_omap_request_port,
@@ -1582,11 +1627,23 @@ static int serial_omap_probe(struct platform_device *pdev)
struct uart_omap_port *up;
struct resource *mem, *irq;
struct omap_uart_port_info *omap_up_info = dev_get_platdata(&pdev->dev);
- int ret;
+ int ret, uartirq = 0, wakeirq = 0;
+ /* The optional wakeirq may be specified in the board dts file */
if (pdev->dev.of_node) {
+ uartirq = irq_of_parse_and_map(pdev->dev.of_node, 0);
+ if (!uartirq)
+ return -EPROBE_DEFER;
+ wakeirq = irq_of_parse_and_map(pdev->dev.of_node, 1);
omap_up_info = of_get_uart_port_info(&pdev->dev);
pdev->dev.platform_data = omap_up_info;
+ } else {
+ irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!irq) {
+ dev_err(&pdev->dev, "no irq resource?\n");
+ return -ENODEV;
+ }
+ uartirq = irq->start;
}
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1595,12 +1652,6 @@ static int serial_omap_probe(struct platform_device *pdev)
return -ENODEV;
}
- irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!irq) {
- dev_err(&pdev->dev, "no irq resource?\n");
- return -ENODEV;
- }
-
if (!devm_request_mem_region(&pdev->dev, mem->start, resource_size(mem),
pdev->dev.driver->name)) {
dev_err(&pdev->dev, "memory region already claimed\n");
@@ -1634,7 +1685,8 @@ static int serial_omap_probe(struct platform_device *pdev)
up->port.dev = &pdev->dev;
up->port.type = PORT_OMAP;
up->port.iotype = UPIO_MEM;
- up->port.irq = irq->start;
+ up->port.irq = uartirq;
+ up->wakeirq = wakeirq;
up->port.regshift = 2;
up->port.fifosize = 64;
@@ -1670,8 +1722,9 @@ static int serial_omap_probe(struct platform_device *pdev)
up->port.uartclk = omap_up_info->uartclk;
if (!up->port.uartclk) {
up->port.uartclk = DEFAULT_CLK_SPEED;
- dev_warn(&pdev->dev, "No clock speed specified: using default:"
- "%d\n", DEFAULT_CLK_SPEED);
+ dev_warn(&pdev->dev,
+ "No clock speed specified: using default: %d\n",
+ DEFAULT_CLK_SPEED);
}
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 44077c0b7670..9cbd3acaf37f 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1614,7 +1614,6 @@ static struct uart_ops pch_uart_ops = {
.shutdown = pch_uart_shutdown,
.set_termios = pch_uart_set_termios,
/* .pm = pch_uart_pm, Not supported yet */
-/* .set_wake = pch_uart_set_wake, Not supported yet */
.type = pch_uart_type,
.release_port = pch_uart_release_port,
.request_port = pch_uart_request_port,
@@ -1854,7 +1853,6 @@ static void pch_uart_exit_port(struct eg20t_port *priv)
debugfs_remove(priv->debugfs);
#endif
uart_remove_one_port(&pch_uart_driver, &priv->port);
- pci_set_drvdata(priv->pdev, NULL);
free_page((unsigned long)priv->rxbuf.buf);
}
@@ -1908,7 +1906,7 @@ static int pch_uart_pci_resume(struct pci_dev *pdev)
#define pch_uart_pci_resume NULL
#endif
-static DEFINE_PCI_DEVICE_TABLE(pch_uart_pci_id) = {
+static const struct pci_device_id pch_uart_pci_id[] = {
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8811),
.driver_data = pch_et20t_uart0},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8812),
@@ -1996,6 +1994,8 @@ module_exit(pch_uart_module_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel EG20T PCH UART PCI Driver");
+MODULE_DEVICE_TABLE(pci, pch_uart_pci_id);
+
module_param(default_baud, uint, S_IRUGO);
MODULE_PARM_DESC(default_baud,
"Default BAUD for initial driver state and console (default 9600)");
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index f87f1a0c8c6e..e9d420ff3931 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -57,6 +57,8 @@
#include <linux/bitops.h>
#include <linux/sysrq.h>
#include <linux/mutex.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <asm/sections.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -1072,7 +1074,7 @@ static void pmz_convert_to_zs(struct uart_pmac_port *uap, unsigned int cflag,
uap->curregs[5] |= Tx8;
uap->parity_mask = 0xff;
break;
- };
+ }
uap->curregs[4] &= ~(SB_MASK);
if (cflag & CSTOPB)
uap->curregs[4] |= SB2;
@@ -2050,6 +2052,9 @@ static int __init pmz_console_init(void)
/* Probe ports */
pmz_probe();
+ if (pmz_ports_count == 0)
+ return -ENODEV;
+
/* TODO: Autoprobe console based on OF */
/* pmz_console.index = i; */
register_console(&pmz_console);
diff --git a/drivers/tty/serial/rp2.c b/drivers/tty/serial/rp2.c
index 328d6deb6b08..056f91b3a4ca 100644
--- a/drivers/tty/serial/rp2.c
+++ b/drivers/tty/serial/rp2.c
@@ -810,7 +810,7 @@ static void rp2_remove(struct pci_dev *pdev)
rp2_remove_ports(card);
}
-static DEFINE_PCI_DEVICE_TABLE(rp2_pci_tbl) = {
+static const struct pci_device_id rp2_pci_tbl[] = {
/* RocketPort INFINITY cards */
diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c
index ba25722a7131..753d4525b367 100644
--- a/drivers/tty/serial/sa1100.c
+++ b/drivers/tty/serial/sa1100.c
@@ -647,7 +647,10 @@ void sa1100_register_uart_fns(struct sa1100_port_fns *fns)
sa1100_pops.set_mctrl = fns->set_mctrl;
sa1100_pops.pm = fns->pm;
- sa1100_pops.set_wake = fns->set_wake;
+ /*
+ * FIXME: fns->set_wake is unused - this should be called from
+ * the suspend() callback if device_may_wakeup(dev)) is set.
+ */
}
void __init sa1100_register_uart(int idx, int port)
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index f3dfa19a1cb8..c1af04d46682 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -407,7 +407,14 @@ static unsigned int s3c24xx_serial_get_mctrl(struct uart_port *port)
static void s3c24xx_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
- /* todo - possibly remove AFC and do manual CTS */
+ unsigned int umcon = rd_regl(port, S3C2410_UMCON);
+
+ if (mctrl & TIOCM_RTS)
+ umcon |= S3C2410_UMCOM_RTS_LOW;
+ else
+ umcon &= ~S3C2410_UMCOM_RTS_LOW;
+
+ wr_regl(port, S3C2410_UMCON, umcon);
}
static void s3c24xx_serial_break_ctl(struct uart_port *port, int break_state)
@@ -774,8 +781,6 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
if (termios->c_cflag & CSTOPB)
ulcon |= S3C2410_LCON_STOPB;
- umcon = (termios->c_cflag & CRTSCTS) ? S3C2410_UMCOM_AFC : 0;
-
if (termios->c_cflag & PARENB) {
if (termios->c_cflag & PARODD)
ulcon |= S3C2410_LCON_PODD;
@@ -792,6 +797,15 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
wr_regl(port, S3C2410_ULCON, ulcon);
wr_regl(port, S3C2410_UBRDIV, quot);
+
+ umcon = rd_regl(port, S3C2410_UMCON);
+ if (termios->c_cflag & CRTSCTS) {
+ umcon |= S3C2410_UMCOM_AFC;
+ /* Disable RTS when RX FIFO contains 63 bytes */
+ umcon &= ~S3C2412_UMCON_AFC_8;
+ } else {
+ umcon &= ~S3C2410_UMCOM_AFC;
+ }
wr_regl(port, S3C2410_UMCON, umcon);
if (ourport->info->has_divslot)
@@ -1254,7 +1268,7 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
ourport->baudclk = ERR_PTR(-EINVAL);
ourport->info = ourport->drv_data->info;
ourport->cfg = (dev_get_platdata(&pdev->dev)) ?
- (struct s3c2410_uartcfg *)dev_get_platdata(&pdev->dev) :
+ dev_get_platdata(&pdev->dev) :
ourport->drv_data->def_cfg;
ourport->port.fifosize = (ourport->info->fifosize) ?
diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h
index aaa617a6c499..8827e5424cef 100644
--- a/drivers/tty/serial/samsung.h
+++ b/drivers/tty/serial/samsung.h
@@ -63,7 +63,7 @@ struct s3c24xx_uart_port {
/* conversion functions */
-#define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev)
+#define s3c24xx_dev_to_port(__dev) dev_get_drvdata(__dev)
/* register access controls */
diff --git a/drivers/tty/serial/sc26xx.c b/drivers/tty/serial/sc26xx.c
deleted file mode 100644
index 887b4f770749..000000000000
--- a/drivers/tty/serial/sc26xx.c
+++ /dev/null
@@ -1,749 +0,0 @@
-/*
- * SC268xx.c: Serial driver for Philiphs SC2681/SC2692 devices.
- *
- * Copyright (C) 2006,2007 Thomas Bogendörfer (tsbogend@alpha.franken.de)
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/major.h>
-#include <linux/circ_buf.h>
-#include <linux/serial.h>
-#include <linux/sysrq.h>
-#include <linux/console.h>
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-
-#warning "Please try migrate to use new driver SCCNXP and report the status" \
- "in the linux-serial mailing list."
-
-#if defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/serial_core.h>
-
-#define SC26XX_MAJOR 204
-#define SC26XX_MINOR_START 205
-#define SC26XX_NR 2
-
-struct uart_sc26xx_port {
- struct uart_port port[2];
- u8 dsr_mask[2];
- u8 cts_mask[2];
- u8 dcd_mask[2];
- u8 ri_mask[2];
- u8 dtr_mask[2];
- u8 rts_mask[2];
- u8 imr;
-};
-
-/* register common to both ports */
-#define RD_ISR 0x14
-#define RD_IPR 0x34
-
-#define WR_ACR 0x10
-#define WR_IMR 0x14
-#define WR_OPCR 0x34
-#define WR_OPR_SET 0x38
-#define WR_OPR_CLR 0x3C
-
-/* access common register */
-#define READ_SC(p, r) readb((p)->membase + RD_##r)
-#define WRITE_SC(p, r, v) writeb((v), (p)->membase + WR_##r)
-
-/* register per port */
-#define RD_PORT_MRx 0x00
-#define RD_PORT_SR 0x04
-#define RD_PORT_RHR 0x0c
-
-#define WR_PORT_MRx 0x00
-#define WR_PORT_CSR 0x04
-#define WR_PORT_CR 0x08
-#define WR_PORT_THR 0x0c
-
-/* SR bits */
-#define SR_BREAK (1 << 7)
-#define SR_FRAME (1 << 6)
-#define SR_PARITY (1 << 5)
-#define SR_OVERRUN (1 << 4)
-#define SR_TXRDY (1 << 2)
-#define SR_RXRDY (1 << 0)
-
-#define CR_RES_MR (1 << 4)
-#define CR_RES_RX (2 << 4)
-#define CR_RES_TX (3 << 4)
-#define CR_STRT_BRK (6 << 4)
-#define CR_STOP_BRK (7 << 4)
-#define CR_DIS_TX (1 << 3)
-#define CR_ENA_TX (1 << 2)
-#define CR_DIS_RX (1 << 1)
-#define CR_ENA_RX (1 << 0)
-
-/* ISR bits */
-#define ISR_RXRDYB (1 << 5)
-#define ISR_TXRDYB (1 << 4)
-#define ISR_RXRDYA (1 << 1)
-#define ISR_TXRDYA (1 << 0)
-
-/* IMR bits */
-#define IMR_RXRDY (1 << 1)
-#define IMR_TXRDY (1 << 0)
-
-/* access port register */
-static inline u8 read_sc_port(struct uart_port *p, u8 reg)
-{
- return readb(p->membase + p->line * 0x20 + reg);
-}
-
-static inline void write_sc_port(struct uart_port *p, u8 reg, u8 val)
-{
- writeb(val, p->membase + p->line * 0x20 + reg);
-}
-
-#define READ_SC_PORT(p, r) read_sc_port(p, RD_PORT_##r)
-#define WRITE_SC_PORT(p, r, v) write_sc_port(p, WR_PORT_##r, v)
-
-static void sc26xx_enable_irq(struct uart_port *port, int mask)
-{
- struct uart_sc26xx_port *up;
- int line = port->line;
-
- port -= line;
- up = container_of(port, struct uart_sc26xx_port, port[0]);
-
- up->imr |= mask << (line * 4);
- WRITE_SC(port, IMR, up->imr);
-}
-
-static void sc26xx_disable_irq(struct uart_port *port, int mask)
-{
- struct uart_sc26xx_port *up;
- int line = port->line;
-
- port -= line;
- up = container_of(port, struct uart_sc26xx_port, port[0]);
-
- up->imr &= ~(mask << (line * 4));
- WRITE_SC(port, IMR, up->imr);
-}
-
-static bool receive_chars(struct uart_port *port)
-{
- struct tty_port *tport = NULL;
- int limit = 10000;
- unsigned char ch;
- char flag;
- u8 status;
-
- /* FIXME what is this trying to achieve? */
- if (port->state != NULL) /* Unopened serial console */
- tport = &port->state->port;
-
- while (limit-- > 0) {
- status = READ_SC_PORT(port, SR);
- if (!(status & SR_RXRDY))
- break;
- ch = READ_SC_PORT(port, RHR);
-
- flag = TTY_NORMAL;
- port->icount.rx++;
-
- if (unlikely(status & (SR_BREAK | SR_FRAME |
- SR_PARITY | SR_OVERRUN))) {
- if (status & SR_BREAK) {
- status &= ~(SR_PARITY | SR_FRAME);
- port->icount.brk++;
- if (uart_handle_break(port))
- continue;
- } else if (status & SR_PARITY)
- port->icount.parity++;
- else if (status & SR_FRAME)
- port->icount.frame++;
- if (status & SR_OVERRUN)
- port->icount.overrun++;
-
- status &= port->read_status_mask;
- if (status & SR_BREAK)
- flag = TTY_BREAK;
- else if (status & SR_PARITY)
- flag = TTY_PARITY;
- else if (status & SR_FRAME)
- flag = TTY_FRAME;
- }
-
- if (uart_handle_sysrq_char(port, ch))
- continue;
-
- if (status & port->ignore_status_mask)
- continue;
-
- tty_insert_flip_char(tport, ch, flag);
- }
- return !!tport;
-}
-
-static void transmit_chars(struct uart_port *port)
-{
- struct circ_buf *xmit;
-
- if (!port->state)
- return;
-
- xmit = &port->state->xmit;
- if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
- sc26xx_disable_irq(port, IMR_TXRDY);
- return;
- }
- while (!uart_circ_empty(xmit)) {
- if (!(READ_SC_PORT(port, SR) & SR_TXRDY))
- break;
-
- WRITE_SC_PORT(port, THR, xmit->buf[xmit->tail]);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- port->icount.tx++;
- }
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(port);
-}
-
-static irqreturn_t sc26xx_interrupt(int irq, void *dev_id)
-{
- struct uart_sc26xx_port *up = dev_id;
- unsigned long flags;
- bool push;
- u8 isr;
-
- spin_lock_irqsave(&up->port[0].lock, flags);
-
- push = false;
- isr = READ_SC(&up->port[0], ISR);
- if (isr & ISR_TXRDYA)
- transmit_chars(&up->port[0]);
- if (isr & ISR_RXRDYA)
- push = receive_chars(&up->port[0]);
-
- spin_unlock(&up->port[0].lock);
-
- if (push)
- tty_flip_buffer_push(&up->port[0].state->port);
-
- spin_lock(&up->port[1].lock);
-
- push = false;
- if (isr & ISR_TXRDYB)
- transmit_chars(&up->port[1]);
- if (isr & ISR_RXRDYB)
- push = receive_chars(&up->port[1]);
-
- spin_unlock_irqrestore(&up->port[1].lock, flags);
-
- if (push)
- tty_flip_buffer_push(&up->port[1].state->port);
-
- return IRQ_HANDLED;
-}
-
-/* port->lock is not held. */
-static unsigned int sc26xx_tx_empty(struct uart_port *port)
-{
- return (READ_SC_PORT(port, SR) & SR_TXRDY) ? TIOCSER_TEMT : 0;
-}
-
-/* port->lock held by caller. */
-static void sc26xx_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
- struct uart_sc26xx_port *up;
- int line = port->line;
-
- port -= line;
- up = container_of(port, struct uart_sc26xx_port, port[0]);
-
- if (up->dtr_mask[line]) {
- if (mctrl & TIOCM_DTR)
- WRITE_SC(port, OPR_SET, up->dtr_mask[line]);
- else
- WRITE_SC(port, OPR_CLR, up->dtr_mask[line]);
- }
- if (up->rts_mask[line]) {
- if (mctrl & TIOCM_RTS)
- WRITE_SC(port, OPR_SET, up->rts_mask[line]);
- else
- WRITE_SC(port, OPR_CLR, up->rts_mask[line]);
- }
-}
-
-/* port->lock is held by caller and interrupts are disabled. */
-static unsigned int sc26xx_get_mctrl(struct uart_port *port)
-{
- struct uart_sc26xx_port *up;
- int line = port->line;
- unsigned int mctrl = TIOCM_DSR | TIOCM_CTS | TIOCM_CAR;
- u8 ipr;
-
- port -= line;
- up = container_of(port, struct uart_sc26xx_port, port[0]);
- ipr = READ_SC(port, IPR) ^ 0xff;
-
- if (up->dsr_mask[line]) {
- mctrl &= ~TIOCM_DSR;
- mctrl |= ipr & up->dsr_mask[line] ? TIOCM_DSR : 0;
- }
- if (up->cts_mask[line]) {
- mctrl &= ~TIOCM_CTS;
- mctrl |= ipr & up->cts_mask[line] ? TIOCM_CTS : 0;
- }
- if (up->dcd_mask[line]) {
- mctrl &= ~TIOCM_CAR;
- mctrl |= ipr & up->dcd_mask[line] ? TIOCM_CAR : 0;
- }
- if (up->ri_mask[line]) {
- mctrl &= ~TIOCM_RNG;
- mctrl |= ipr & up->ri_mask[line] ? TIOCM_RNG : 0;
- }
- return mctrl;
-}
-
-/* port->lock held by caller. */
-static void sc26xx_stop_tx(struct uart_port *port)
-{
- return;
-}
-
-/* port->lock held by caller. */
-static void sc26xx_start_tx(struct uart_port *port)
-{
- struct circ_buf *xmit = &port->state->xmit;
-
- while (!uart_circ_empty(xmit)) {
- if (!(READ_SC_PORT(port, SR) & SR_TXRDY)) {
- sc26xx_enable_irq(port, IMR_TXRDY);
- break;
- }
- WRITE_SC_PORT(port, THR, xmit->buf[xmit->tail]);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- port->icount.tx++;
- }
-}
-
-/* port->lock held by caller. */
-static void sc26xx_stop_rx(struct uart_port *port)
-{
-}
-
-/* port->lock held by caller. */
-static void sc26xx_enable_ms(struct uart_port *port)
-{
-}
-
-/* port->lock is not held. */
-static void sc26xx_break_ctl(struct uart_port *port, int break_state)
-{
- if (break_state == -1)
- WRITE_SC_PORT(port, CR, CR_STRT_BRK);
- else
- WRITE_SC_PORT(port, CR, CR_STOP_BRK);
-}
-
-/* port->lock is not held. */
-static int sc26xx_startup(struct uart_port *port)
-{
- sc26xx_disable_irq(port, IMR_TXRDY | IMR_RXRDY);
- WRITE_SC(port, OPCR, 0);
-
- /* reset tx and rx */
- WRITE_SC_PORT(port, CR, CR_RES_RX);
- WRITE_SC_PORT(port, CR, CR_RES_TX);
-
- /* start rx/tx */
- WRITE_SC_PORT(port, CR, CR_ENA_TX | CR_ENA_RX);
-
- /* enable irqs */
- sc26xx_enable_irq(port, IMR_RXRDY);
- return 0;
-}
-
-/* port->lock is not held. */
-static void sc26xx_shutdown(struct uart_port *port)
-{
- /* disable interrupst */
- sc26xx_disable_irq(port, IMR_TXRDY | IMR_RXRDY);
-
- /* stop tx/rx */
- WRITE_SC_PORT(port, CR, CR_DIS_TX | CR_DIS_RX);
-}
-
-/* port->lock is not held. */
-static void sc26xx_set_termios(struct uart_port *port, struct ktermios *termios,
- struct ktermios *old)
-{
- unsigned int baud = uart_get_baud_rate(port, termios, old, 0, 4000000);
- unsigned int quot = uart_get_divisor(port, baud);
- unsigned int iflag, cflag;
- unsigned long flags;
- u8 mr1, mr2, csr;
-
- spin_lock_irqsave(&port->lock, flags);
-
- while ((READ_SC_PORT(port, SR) & ((1 << 3) | (1 << 2))) != 0xc)
- udelay(2);
-
- WRITE_SC_PORT(port, CR, CR_DIS_TX | CR_DIS_RX);
-
- iflag = termios->c_iflag;
- cflag = termios->c_cflag;
-
- port->read_status_mask = SR_OVERRUN;
- if (iflag & INPCK)
- port->read_status_mask |= SR_PARITY | SR_FRAME;
- if (iflag & (BRKINT | PARMRK))
- port->read_status_mask |= SR_BREAK;
-
- port->ignore_status_mask = 0;
- if (iflag & IGNBRK)
- port->ignore_status_mask |= SR_BREAK;
- if ((cflag & CREAD) == 0)
- port->ignore_status_mask |= SR_BREAK | SR_FRAME |
- SR_PARITY | SR_OVERRUN;
-
- switch (cflag & CSIZE) {
- case CS5:
- mr1 = 0x00;
- break;
- case CS6:
- mr1 = 0x01;
- break;
- case CS7:
- mr1 = 0x02;
- break;
- default:
- case CS8:
- mr1 = 0x03;
- break;
- }
- mr2 = 0x07;
- if (cflag & CSTOPB)
- mr2 = 0x0f;
- if (cflag & PARENB) {
- if (cflag & PARODD)
- mr1 |= (1 << 2);
- } else
- mr1 |= (2 << 3);
-
- switch (baud) {
- case 50:
- csr = 0x00;
- break;
- case 110:
- csr = 0x11;
- break;
- case 134:
- csr = 0x22;
- break;
- case 200:
- csr = 0x33;
- break;
- case 300:
- csr = 0x44;
- break;
- case 600:
- csr = 0x55;
- break;
- case 1200:
- csr = 0x66;
- break;
- case 2400:
- csr = 0x88;
- break;
- case 4800:
- csr = 0x99;
- break;
- default:
- case 9600:
- csr = 0xbb;
- break;
- case 19200:
- csr = 0xcc;
- break;
- }
-
- WRITE_SC_PORT(port, CR, CR_RES_MR);
- WRITE_SC_PORT(port, MRx, mr1);
- WRITE_SC_PORT(port, MRx, mr2);
-
- WRITE_SC(port, ACR, 0x80);
- WRITE_SC_PORT(port, CSR, csr);
-
- /* reset tx and rx */
- WRITE_SC_PORT(port, CR, CR_RES_RX);
- WRITE_SC_PORT(port, CR, CR_RES_TX);
-
- WRITE_SC_PORT(port, CR, CR_ENA_TX | CR_ENA_RX);
- while ((READ_SC_PORT(port, SR) & ((1 << 3) | (1 << 2))) != 0xc)
- udelay(2);
-
- /* XXX */
- uart_update_timeout(port, cflag,
- (port->uartclk / (16 * quot)));
-
- spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static const char *sc26xx_type(struct uart_port *port)
-{
- return "SC26XX";
-}
-
-static void sc26xx_release_port(struct uart_port *port)
-{
-}
-
-static int sc26xx_request_port(struct uart_port *port)
-{
- return 0;
-}
-
-static void sc26xx_config_port(struct uart_port *port, int flags)
-{
-}
-
-static int sc26xx_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
- return -EINVAL;
-}
-
-static struct uart_ops sc26xx_ops = {
- .tx_empty = sc26xx_tx_empty,
- .set_mctrl = sc26xx_set_mctrl,
- .get_mctrl = sc26xx_get_mctrl,
- .stop_tx = sc26xx_stop_tx,
- .start_tx = sc26xx_start_tx,
- .stop_rx = sc26xx_stop_rx,
- .enable_ms = sc26xx_enable_ms,
- .break_ctl = sc26xx_break_ctl,
- .startup = sc26xx_startup,
- .shutdown = sc26xx_shutdown,
- .set_termios = sc26xx_set_termios,
- .type = sc26xx_type,
- .release_port = sc26xx_release_port,
- .request_port = sc26xx_request_port,
- .config_port = sc26xx_config_port,
- .verify_port = sc26xx_verify_port,
-};
-
-static struct uart_port *sc26xx_port;
-
-#ifdef CONFIG_SERIAL_SC26XX_CONSOLE
-static void sc26xx_console_putchar(struct uart_port *port, char c)
-{
- unsigned long flags;
- int limit = 1000000;
-
- spin_lock_irqsave(&port->lock, flags);
-
- while (limit-- > 0) {
- if (READ_SC_PORT(port, SR) & SR_TXRDY) {
- WRITE_SC_PORT(port, THR, c);
- break;
- }
- udelay(2);
- }
-
- spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static void sc26xx_console_write(struct console *con, const char *s, unsigned n)
-{
- struct uart_port *port = sc26xx_port;
- int i;
-
- for (i = 0; i < n; i++) {
- if (*s == '\n')
- sc26xx_console_putchar(port, '\r');
- sc26xx_console_putchar(port, *s++);
- }
-}
-
-static int __init sc26xx_console_setup(struct console *con, char *options)
-{
- struct uart_port *port = sc26xx_port;
- int baud = 9600;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
-
- if (port->type != PORT_SC26XX)
- return -1;
-
- printk(KERN_INFO "Console: ttySC%d (SC26XX)\n", con->index);
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
-
- return uart_set_options(port, con, baud, parity, bits, flow);
-}
-
-static struct uart_driver sc26xx_reg;
-static struct console sc26xx_console = {
- .name = "ttySC",
- .write = sc26xx_console_write,
- .device = uart_console_device,
- .setup = sc26xx_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &sc26xx_reg,
-};
-#define SC26XX_CONSOLE &sc26xx_console
-#else
-#define SC26XX_CONSOLE NULL
-#endif
-
-static struct uart_driver sc26xx_reg = {
- .owner = THIS_MODULE,
- .driver_name = "SC26xx",
- .dev_name = "ttySC",
- .major = SC26XX_MAJOR,
- .minor = SC26XX_MINOR_START,
- .nr = SC26XX_NR,
- .cons = SC26XX_CONSOLE,
-};
-
-static u8 sc26xx_flags2mask(unsigned int flags, unsigned int bitpos)
-{
- unsigned int bit = (flags >> bitpos) & 15;
-
- return bit ? (1 << (bit - 1)) : 0;
-}
-
-static void sc26xx_init_masks(struct uart_sc26xx_port *up,
- int line, unsigned int data)
-{
- up->dtr_mask[line] = sc26xx_flags2mask(data, 0);
- up->rts_mask[line] = sc26xx_flags2mask(data, 4);
- up->dsr_mask[line] = sc26xx_flags2mask(data, 8);
- up->cts_mask[line] = sc26xx_flags2mask(data, 12);
- up->dcd_mask[line] = sc26xx_flags2mask(data, 16);
- up->ri_mask[line] = sc26xx_flags2mask(data, 20);
-}
-
-static int sc26xx_probe(struct platform_device *dev)
-{
- struct resource *res;
- struct uart_sc26xx_port *up;
- unsigned int *sc26xx_data = dev_get_platdata(&dev->dev);
- int err;
-
- res = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- up = kzalloc(sizeof *up, GFP_KERNEL);
- if (unlikely(!up))
- return -ENOMEM;
-
- up->port[0].line = 0;
- up->port[0].ops = &sc26xx_ops;
- up->port[0].type = PORT_SC26XX;
- up->port[0].uartclk = (29491200 / 16); /* arbitrary */
-
- up->port[0].mapbase = res->start;
- up->port[0].membase = ioremap_nocache(up->port[0].mapbase, 0x40);
- up->port[0].iotype = UPIO_MEM;
- up->port[0].irq = platform_get_irq(dev, 0);
-
- up->port[0].dev = &dev->dev;
-
- sc26xx_init_masks(up, 0, sc26xx_data[0]);
-
- sc26xx_port = &up->port[0];
-
- up->port[1].line = 1;
- up->port[1].ops = &sc26xx_ops;
- up->port[1].type = PORT_SC26XX;
- up->port[1].uartclk = (29491200 / 16); /* arbitrary */
-
- up->port[1].mapbase = up->port[0].mapbase;
- up->port[1].membase = up->port[0].membase;
- up->port[1].iotype = UPIO_MEM;
- up->port[1].irq = up->port[0].irq;
-
- up->port[1].dev = &dev->dev;
-
- sc26xx_init_masks(up, 1, sc26xx_data[1]);
-
- err = uart_register_driver(&sc26xx_reg);
- if (err)
- goto out_free_port;
-
- sc26xx_reg.tty_driver->name_base = sc26xx_reg.minor;
-
- err = uart_add_one_port(&sc26xx_reg, &up->port[0]);
- if (err)
- goto out_unregister_driver;
-
- err = uart_add_one_port(&sc26xx_reg, &up->port[1]);
- if (err)
- goto out_remove_port0;
-
- err = request_irq(up->port[0].irq, sc26xx_interrupt, 0, "sc26xx", up);
- if (err)
- goto out_remove_ports;
-
- platform_set_drvdata(dev, up);
- return 0;
-
-out_remove_ports:
- uart_remove_one_port(&sc26xx_reg, &up->port[1]);
-out_remove_port0:
- uart_remove_one_port(&sc26xx_reg, &up->port[0]);
-
-out_unregister_driver:
- uart_unregister_driver(&sc26xx_reg);
-
-out_free_port:
- kfree(up);
- sc26xx_port = NULL;
- return err;
-}
-
-
-static int __exit sc26xx_driver_remove(struct platform_device *dev)
-{
- struct uart_sc26xx_port *up = platform_get_drvdata(dev);
-
- free_irq(up->port[0].irq, up);
-
- uart_remove_one_port(&sc26xx_reg, &up->port[0]);
- uart_remove_one_port(&sc26xx_reg, &up->port[1]);
-
- uart_unregister_driver(&sc26xx_reg);
-
- kfree(up);
- sc26xx_port = NULL;
-
- return 0;
-}
-
-static struct platform_driver sc26xx_driver = {
- .probe = sc26xx_probe,
- .remove = sc26xx_driver_remove,
- .driver = {
- .name = "SC26xx",
- .owner = THIS_MODULE,
- },
-};
-
-module_platform_driver(sc26xx_driver);
-
-MODULE_AUTHOR("Thomas Bogendörfer");
-MODULE_DESCRIPTION("SC681/SC2692 serial driver");
-MODULE_VERSION("1.0");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:SC26xx");
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index 49e9bbfe6cab..a447f71538ef 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -986,6 +986,7 @@ static int sccnxp_probe(struct platform_device *pdev)
return 0;
}
+ uart_unregister_driver(&s->uart);
err_out:
if (!IS_ERR(s->regulator))
return regulator_disable(s->regulator);
diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index 0489a2bdcdf9..dfe79ccc4fb3 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -1018,7 +1018,7 @@ static int tegra_uart_startup(struct uart_port *u)
goto fail_hw_init;
}
- ret = request_irq(u->irq, tegra_uart_isr, IRQF_DISABLED,
+ ret = request_irq(u->irq, tegra_uart_isr, 0,
dev_name(u->dev), tup);
if (ret < 0) {
dev_err(u->dev, "Failed to register ISR for IRQ %d\n", u->irq);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 0f02351c9239..ece2049bd270 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1830,9 +1830,13 @@ uart_set_options(struct uart_port *port, struct console *co,
/*
* Ensure that the serial console lock is initialised
* early.
+ * If this port is a console, then the spinlock is already
+ * initialised.
*/
- spin_lock_init(&port->lock);
- lockdep_set_class(&port->lock, &port_lock_key);
+ if (!(uart_console(port) && (port->cons->flags & CON_ENABLED))) {
+ spin_lock_init(&port->lock);
+ lockdep_set_class(&port->lock, &port_lock_key);
+ }
memset(&termios, 0, sizeof(struct ktermios));
diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c
index 440a962412da..90a080b1f9ee 100644
--- a/drivers/tty/serial/serial_txx9.c
+++ b/drivers/tty/serial/serial_txx9.c
@@ -1220,8 +1220,6 @@ static void pciserial_txx9_remove_one(struct pci_dev *dev)
{
struct uart_txx9_port *up = pci_get_drvdata(dev);
- pci_set_drvdata(dev, NULL);
-
if (up) {
serial_txx9_unregister_port(up->port.line);
pci_disable_device(dev);
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 537750261aaa..7d8103cd3e2e 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1433,7 +1433,7 @@ static void work_fn_rx(struct work_struct *work)
desc = s->desc_rx[new];
if (dma_async_is_tx_complete(s->chan_rx, s->active_rx, NULL, NULL) !=
- DMA_SUCCESS) {
+ DMA_COMPLETE) {
/* Handle incomplete DMA receive */
struct dma_chan *chan = s->chan_rx;
struct shdma_desc *sh_desc = container_of(desc,
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index 61c1ad03db5b..49a2ffd101a7 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -524,12 +524,14 @@ static void sirfsoc_rx_tmo_process_tl(unsigned long param)
struct sirfsoc_int_status *uint_st = &sirfport->uart_reg->uart_int_st;
unsigned int count;
unsigned long flags;
+ struct dma_tx_state tx_state;
spin_lock_irqsave(&sirfport->rx_lock, flags);
- while (sirfport->rx_completed != sirfport->rx_issued) {
+ while (DMA_COMPLETE == dmaengine_tx_status(sirfport->rx_dma_chan,
+ sirfport->rx_dma_items[sirfport->rx_completed].cookie, &tx_state)) {
sirfsoc_uart_insert_rx_buf_to_tty(sirfport,
SIRFSOC_RX_DMA_BUF_SIZE);
- sirfsoc_rx_submit_one_dma_desc(port, sirfport->rx_completed++);
+ sirfport->rx_completed++;
sirfport->rx_completed %= SIRFSOC_RX_LOOP_BUF_CNT;
}
count = CIRC_CNT(sirfport->rx_dma_items[sirfport->rx_issued].xmit.head,
@@ -706,12 +708,21 @@ static void sirfsoc_uart_rx_dma_complete_tl(unsigned long param)
{
struct sirfsoc_uart_port *sirfport = (struct sirfsoc_uart_port *)param;
struct uart_port *port = &sirfport->port;
+ struct sirfsoc_register *ureg = &sirfport->uart_reg->uart_reg;
+ struct sirfsoc_int_en *uint_en = &sirfport->uart_reg->uart_int_en;
unsigned long flags;
+ struct dma_tx_state tx_state;
spin_lock_irqsave(&sirfport->rx_lock, flags);
- while (sirfport->rx_completed != sirfport->rx_issued) {
+ while (DMA_COMPLETE == dmaengine_tx_status(sirfport->rx_dma_chan,
+ sirfport->rx_dma_items[sirfport->rx_completed].cookie, &tx_state)) {
sirfsoc_uart_insert_rx_buf_to_tty(sirfport,
SIRFSOC_RX_DMA_BUF_SIZE);
- sirfsoc_rx_submit_one_dma_desc(port, sirfport->rx_completed++);
+ if (rd_regl(port, ureg->sirfsoc_int_en_reg) &
+ uint_en->sirfsoc_rx_timeout_en)
+ sirfsoc_rx_submit_one_dma_desc(port,
+ sirfport->rx_completed++);
+ else
+ sirfport->rx_completed++;
sirfport->rx_completed %= SIRFSOC_RX_LOOP_BUF_CNT;
}
spin_unlock_irqrestore(&sirfport->rx_lock, flags);
@@ -1026,6 +1037,16 @@ static void sirfsoc_uart_set_termios(struct uart_port *port,
spin_unlock_irqrestore(&port->lock, flags);
}
+static void sirfsoc_uart_pm(struct uart_port *port, unsigned int state,
+ unsigned int oldstate)
+{
+ struct sirfsoc_uart_port *sirfport = to_sirfport(port);
+ if (!state)
+ clk_prepare_enable(sirfport->clk);
+ else
+ clk_disable_unprepare(sirfport->clk);
+}
+
static unsigned int sirfsoc_uart_init_tx_dma(struct uart_port *port)
{
struct sirfsoc_uart_port *sirfport = to_sirfport(port);
@@ -1257,6 +1278,7 @@ static struct uart_ops sirfsoc_uart_ops = {
.startup = sirfsoc_uart_startup,
.shutdown = sirfsoc_uart_shutdown,
.set_termios = sirfsoc_uart_set_termios,
+ .pm = sirfsoc_uart_pm,
.type = sirfsoc_uart_type,
.release_port = sirfsoc_uart_release_port,
.request_port = sirfsoc_uart_request_port,
@@ -1479,7 +1501,6 @@ usp_no_flow_control:
ret = PTR_ERR(sirfport->clk);
goto err;
}
- clk_prepare_enable(sirfport->clk);
port->uartclk = clk_get_rate(sirfport->clk);
port->ops = &sirfsoc_uart_ops;
@@ -1495,7 +1516,6 @@ usp_no_flow_control:
return 0;
port_err:
- clk_disable_unprepare(sirfport->clk);
clk_put(sirfport->clk);
err:
return ret;
@@ -1505,38 +1525,42 @@ static int sirfsoc_uart_remove(struct platform_device *pdev)
{
struct sirfsoc_uart_port *sirfport = platform_get_drvdata(pdev);
struct uart_port *port = &sirfport->port;
- clk_disable_unprepare(sirfport->clk);
clk_put(sirfport->clk);
uart_remove_one_port(&sirfsoc_uart_drv, port);
return 0;
}
+#ifdef CONFIG_PM_SLEEP
static int
-sirfsoc_uart_suspend(struct platform_device *pdev, pm_message_t state)
+sirfsoc_uart_suspend(struct device *pdev)
{
- struct sirfsoc_uart_port *sirfport = platform_get_drvdata(pdev);
+ struct sirfsoc_uart_port *sirfport = dev_get_drvdata(pdev);
struct uart_port *port = &sirfport->port;
uart_suspend_port(&sirfsoc_uart_drv, port);
return 0;
}
-static int sirfsoc_uart_resume(struct platform_device *pdev)
+static int sirfsoc_uart_resume(struct device *pdev)
{
- struct sirfsoc_uart_port *sirfport = platform_get_drvdata(pdev);
+ struct sirfsoc_uart_port *sirfport = dev_get_drvdata(pdev);
struct uart_port *port = &sirfport->port;
uart_resume_port(&sirfsoc_uart_drv, port);
return 0;
}
+#endif
+
+static const struct dev_pm_ops sirfsoc_uart_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sirfsoc_uart_suspend, sirfsoc_uart_resume)
+};
static struct platform_driver sirfsoc_uart_driver = {
.probe = sirfsoc_uart_probe,
.remove = sirfsoc_uart_remove,
- .suspend = sirfsoc_uart_suspend,
- .resume = sirfsoc_uart_resume,
.driver = {
.name = SIRFUART_PORT_NAME,
.owner = THIS_MODULE,
.of_match_table = sirfsoc_uart_ids,
+ .pm = &sirfsoc_uart_pm_ops,
},
};
diff --git a/drivers/tty/serial/sirfsoc_uart.h b/drivers/tty/serial/sirfsoc_uart.h
index fb8d0a002607..b7d679c0881b 100644
--- a/drivers/tty/serial/sirfsoc_uart.h
+++ b/drivers/tty/serial/sirfsoc_uart.h
@@ -368,15 +368,6 @@ struct sirfsoc_uart_register sirfsoc_uart = {
#define SIRFSOC_UART_NR 6
#define SIRFSOC_PORT_TYPE 0xa5
-/* Baud Rate Calculation */
-#define SIRF_MIN_SAMPLE_DIV 0xf
-#define SIRF_MAX_SAMPLE_DIV 0x3f
-#define SIRF_IOCLK_DIV_MAX 0xffff
-#define SIRF_SAMPLE_DIV_SHIFT 16
-#define SIRF_IOCLK_DIV_MASK 0xffff
-#define SIRF_SAMPLE_DIV_MASK 0x3f0000
-#define SIRF_BAUD_RATE_SUPPORT_NR 18
-
/* Uart Common Use Macro*/
#define SIRFSOC_RX_DMA_BUF_SIZE 256
#define BYTES_TO_ALIGN(dma_addr) ((unsigned long)(dma_addr) & 0x3)
@@ -453,9 +444,6 @@ struct sirfsoc_uart_port {
int rx_issued;
};
-/* Hardware Flow Control */
-#define SIRFUART_AFC_CTRL_RX_THD 0x70
-
/* Register Access Control */
#define portaddr(port, reg) ((port)->membase + (reg))
#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg)))
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index 5d6136b2a04a..380fb5355cb2 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -894,7 +894,7 @@ static int sunsab_console_setup(struct console *con, char *options)
case B115200: baud = 115200; break;
case B230400: baud = 230400; break;
case B460800: baud = 460800; break;
- };
+ }
/*
* Temporary fix.
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 699cc1b5f6aa..db79b76f5c8e 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -522,7 +522,7 @@ static void receive_kbd_ms_chars(struct uart_sunsu_port *up, int is_break)
serio_interrupt(&up->serio, ch, 0);
#endif
break;
- };
+ }
}
} while (serial_in(up, UART_LSR) & UART_LSR_DR);
}
diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index 135a15203532..45a8c6aa5837 100644
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -319,7 +319,7 @@ static void sunzilog_kbdms_receive_chars(struct uart_sunzilog_port *up,
serio_interrupt(&up->serio, ch, 0);
#endif
break;
- };
+ }
}
}
@@ -897,7 +897,7 @@ sunzilog_convert_to_zs(struct uart_sunzilog_port *up, unsigned int cflag,
up->curregs[R5] |= Tx8;
up->parity_mask = 0xff;
break;
- };
+ }
up->curregs[R4] &= ~0x0c;
if (cflag & CSTOPB)
up->curregs[R4] |= SB2;
@@ -1239,7 +1239,7 @@ static int __init sunzilog_console_setup(struct console *con, char *options)
default: case B9600: baud = 9600; break;
case B19200: baud = 19200; break;
case B38400: baud = 38400; break;
- };
+ }
brg = BPS_TO_BRG(baud, ZS_CLOCK / ZS_CLOCK_DIVISOR);
diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index 88317482b81f..d569ca58bab6 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -25,6 +25,8 @@
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/dma-mapping.h>
@@ -269,7 +271,7 @@ static unsigned int qe_uart_tx_empty(struct uart_port *port)
return 1;
bdp++;
- };
+ }
}
/*
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 7e4150aa69c6..f619ad5b5eae 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1,7 +1,7 @@
/*
* Xilinx PS UART driver
*
- * 2011 (c) Xilinx Inc.
+ * 2011 - 2013 (C) Xilinx Inc.
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General Public
@@ -11,13 +11,17 @@
*
*/
+#if defined(CONFIG_SERIAL_XILINX_PS_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
#include <linux/platform_device.h>
#include <linux/serial.h>
+#include <linux/console.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
-#include <linux/console.h>
#include <linux/clk.h>
#include <linux/irq.h>
#include <linux/io.h>
@@ -29,12 +33,22 @@
#define XUARTPS_MAJOR 0 /* use dynamic node allocation */
#define XUARTPS_MINOR 0 /* works best with devtmpfs */
#define XUARTPS_NR_PORTS 2
-#define XUARTPS_FIFO_SIZE 16 /* FIFO size */
+#define XUARTPS_FIFO_SIZE 64 /* FIFO size */
#define XUARTPS_REGISTER_SPACE 0xFFF
#define xuartps_readl(offset) ioread32(port->membase + offset)
#define xuartps_writel(val, offset) iowrite32(val, port->membase + offset)
+/* Rx Trigger level */
+static int rx_trigger_level = 56;
+module_param(rx_trigger_level, uint, S_IRUGO);
+MODULE_PARM_DESC(rx_trigger_level, "Rx trigger level, 1-63 bytes");
+
+/* Rx Timeout */
+static int rx_timeout = 10;
+module_param(rx_timeout, uint, S_IRUGO);
+MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255");
+
/********************************Register Map********************************/
/** UART
*
@@ -128,6 +142,9 @@
#define XUARTPS_IXR_RXEMPTY 0x00000002 /* RX FIFO empty interrupt. */
#define XUARTPS_IXR_MASK 0x00001FFF /* Valid bit mask */
+/* Goes in read_status_mask for break detection as the HW doesn't do it*/
+#define XUARTPS_IXR_BRK 0x80000000
+
/** Channel Status Register
*
* The channel status register (CSR) is provided to enable the control logic
@@ -139,15 +156,27 @@
#define XUARTPS_SR_TXFULL 0x00000010 /* TX FIFO full */
#define XUARTPS_SR_RXTRIG 0x00000001 /* Rx Trigger */
+/* baud dividers min/max values */
+#define XUARTPS_BDIV_MIN 4
+#define XUARTPS_BDIV_MAX 255
+#define XUARTPS_CD_MAX 65535
+
/**
* struct xuartps - device data
- * @refclk Reference clock
- * @aperclk APB clock
+ * @port Pointer to the UART port
+ * @refclk Reference clock
+ * @aperclk APB clock
+ * @baud Current baud rate
+ * @clk_rate_change_nb Notifier block for clock changes
*/
struct xuartps {
+ struct uart_port *port;
struct clk *refclk;
struct clk *aperclk;
+ unsigned int baud;
+ struct notifier_block clk_rate_change_nb;
};
+#define to_xuartps(_nb) container_of(_nb, struct xuartps, clk_rate_change_nb);
/**
* xuartps_isr - Interrupt handler
@@ -171,6 +200,23 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
*/
isrstatus = xuartps_readl(XUARTPS_ISR_OFFSET);
+ /*
+ * There is no hardware break detection, so we interpret framing
+ * error with all-zeros data as a break sequence. Most of the time,
+ * there's another non-zero byte at the end of the sequence.
+ */
+
+ if (isrstatus & XUARTPS_IXR_FRAMING) {
+ while (!(xuartps_readl(XUARTPS_SR_OFFSET) &
+ XUARTPS_SR_RXEMPTY)) {
+ if (!xuartps_readl(XUARTPS_FIFO_OFFSET)) {
+ port->read_status_mask |= XUARTPS_IXR_BRK;
+ isrstatus &= ~XUARTPS_IXR_FRAMING;
+ }
+ }
+ xuartps_writel(XUARTPS_IXR_FRAMING, XUARTPS_ISR_OFFSET);
+ }
+
/* drop byte with parity error if IGNPAR specified */
if (isrstatus & port->ignore_status_mask & XUARTPS_IXR_PARITY)
isrstatus &= ~(XUARTPS_IXR_RXTRIG | XUARTPS_IXR_TOUT);
@@ -184,6 +230,32 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
while ((xuartps_readl(XUARTPS_SR_OFFSET) &
XUARTPS_SR_RXEMPTY) != XUARTPS_SR_RXEMPTY) {
data = xuartps_readl(XUARTPS_FIFO_OFFSET);
+
+ /* Non-NULL byte after BREAK is garbage (99%) */
+ if (data && (port->read_status_mask &
+ XUARTPS_IXR_BRK)) {
+ port->read_status_mask &= ~XUARTPS_IXR_BRK;
+ port->icount.brk++;
+ if (uart_handle_break(port))
+ continue;
+ }
+
+#ifdef SUPPORT_SYSRQ
+ /*
+ * uart_handle_sysrq_char() doesn't work if
+ * spinlocked, for some reason
+ */
+ if (port->sysrq) {
+ spin_unlock(&port->lock);
+ if (uart_handle_sysrq_char(port,
+ (unsigned char)data)) {
+ spin_lock(&port->lock);
+ continue;
+ }
+ spin_lock(&port->lock);
+ }
+#endif
+
port->icount.rx++;
if (isrstatus & XUARTPS_IXR_PARITY) {
@@ -247,63 +319,196 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
}
/**
- * xuartps_set_baud_rate - Calculate and set the baud rate
- * @port: Handle to the uart port structure
- * @baud: Baud rate to set
- *
+ * xuartps_calc_baud_divs - Calculate baud rate divisors
+ * @clk: UART module input clock
+ * @baud: Desired baud rate
+ * @rbdiv: BDIV value (return value)
+ * @rcd: CD value (return value)
+ * @div8: Value for clk_sel bit in mod (return value)
* Returns baud rate, requested baud when possible, or actual baud when there
- * was too much error
- **/
-static unsigned int xuartps_set_baud_rate(struct uart_port *port,
- unsigned int baud)
+ * was too much error, zero if no valid divisors are found.
+ *
+ * Formula to obtain baud rate is
+ * baud_tx/rx rate = clk/CD * (BDIV + 1)
+ * input_clk = (Uart User Defined Clock or Apb Clock)
+ * depends on UCLKEN in MR Reg
+ * clk = input_clk or input_clk/8;
+ * depends on CLKS in MR reg
+ * CD and BDIV depends on values in
+ * baud rate generate register
+ * baud rate clock divisor register
+ */
+static unsigned int xuartps_calc_baud_divs(unsigned int clk, unsigned int baud,
+ u32 *rbdiv, u32 *rcd, int *div8)
{
- unsigned int sel_clk;
- unsigned int calc_baud = 0;
- unsigned int brgr_val, brdiv_val;
+ u32 cd, bdiv;
+ unsigned int calc_baud;
+ unsigned int bestbaud = 0;
unsigned int bauderror;
+ unsigned int besterror = ~0;
- /* Formula to obtain baud rate is
- * baud_tx/rx rate = sel_clk/CD * (BDIV + 1)
- * input_clk = (Uart User Defined Clock or Apb Clock)
- * depends on UCLKEN in MR Reg
- * sel_clk = input_clk or input_clk/8;
- * depends on CLKS in MR reg
- * CD and BDIV depends on values in
- * baud rate generate register
- * baud rate clock divisor register
- */
- sel_clk = port->uartclk;
- if (xuartps_readl(XUARTPS_MR_OFFSET) & XUARTPS_MR_CLKSEL)
- sel_clk = sel_clk / 8;
-
- /* Find the best values for baud generation */
- for (brdiv_val = 4; brdiv_val < 255; brdiv_val++) {
+ if (baud < clk / ((XUARTPS_BDIV_MAX + 1) * XUARTPS_CD_MAX)) {
+ *div8 = 1;
+ clk /= 8;
+ } else {
+ *div8 = 0;
+ }
- brgr_val = sel_clk / (baud * (brdiv_val + 1));
- if (brgr_val < 2 || brgr_val > 65535)
+ for (bdiv = XUARTPS_BDIV_MIN; bdiv <= XUARTPS_BDIV_MAX; bdiv++) {
+ cd = DIV_ROUND_CLOSEST(clk, baud * (bdiv + 1));
+ if (cd < 1 || cd > XUARTPS_CD_MAX)
continue;
- calc_baud = sel_clk / (brgr_val * (brdiv_val + 1));
+ calc_baud = clk / (cd * (bdiv + 1));
if (baud > calc_baud)
bauderror = baud - calc_baud;
else
bauderror = calc_baud - baud;
- /* use the values when percent error is acceptable */
- if (((bauderror * 100) / baud) < 3) {
- calc_baud = baud;
- break;
+ if (besterror > bauderror) {
+ *rbdiv = bdiv;
+ *rcd = cd;
+ bestbaud = calc_baud;
+ besterror = bauderror;
}
}
+ /* use the values when percent error is acceptable */
+ if (((besterror * 100) / baud) < 3)
+ bestbaud = baud;
- /* Set the values for the new baud rate */
- xuartps_writel(brgr_val, XUARTPS_BAUDGEN_OFFSET);
- xuartps_writel(brdiv_val, XUARTPS_BAUDDIV_OFFSET);
+ return bestbaud;
+}
+
+/**
+ * xuartps_set_baud_rate - Calculate and set the baud rate
+ * @port: Handle to the uart port structure
+ * @baud: Baud rate to set
+ * Returns baud rate, requested baud when possible, or actual baud when there
+ * was too much error, zero if no valid divisors are found.
+ */
+static unsigned int xuartps_set_baud_rate(struct uart_port *port,
+ unsigned int baud)
+{
+ unsigned int calc_baud;
+ u32 cd = 0, bdiv = 0;
+ u32 mreg;
+ int div8;
+ struct xuartps *xuartps = port->private_data;
+
+ calc_baud = xuartps_calc_baud_divs(port->uartclk, baud, &bdiv, &cd,
+ &div8);
+
+ /* Write new divisors to hardware */
+ mreg = xuartps_readl(XUARTPS_MR_OFFSET);
+ if (div8)
+ mreg |= XUARTPS_MR_CLKSEL;
+ else
+ mreg &= ~XUARTPS_MR_CLKSEL;
+ xuartps_writel(mreg, XUARTPS_MR_OFFSET);
+ xuartps_writel(cd, XUARTPS_BAUDGEN_OFFSET);
+ xuartps_writel(bdiv, XUARTPS_BAUDDIV_OFFSET);
+ xuartps->baud = baud;
return calc_baud;
}
+#ifdef CONFIG_COMMON_CLK
+/**
+ * xuartps_clk_notitifer_cb - Clock notifier callback
+ * @nb: Notifier block
+ * @event: Notify event
+ * @data: Notifier data
+ * Returns NOTIFY_OK on success, NOTIFY_BAD on error.
+ */
+static int xuartps_clk_notifier_cb(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ u32 ctrl_reg;
+ struct uart_port *port;
+ int locked = 0;
+ struct clk_notifier_data *ndata = data;
+ unsigned long flags = 0;
+ struct xuartps *xuartps = to_xuartps(nb);
+
+ port = xuartps->port;
+ if (port->suspended)
+ return NOTIFY_OK;
+
+ switch (event) {
+ case PRE_RATE_CHANGE:
+ {
+ u32 bdiv;
+ u32 cd;
+ int div8;
+
+ /*
+ * Find out if current baud-rate can be achieved with new clock
+ * frequency.
+ */
+ if (!xuartps_calc_baud_divs(ndata->new_rate, xuartps->baud,
+ &bdiv, &cd, &div8))
+ return NOTIFY_BAD;
+
+ spin_lock_irqsave(&xuartps->port->lock, flags);
+
+ /* Disable the TX and RX to set baud rate */
+ xuartps_writel(xuartps_readl(XUARTPS_CR_OFFSET) |
+ (XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS),
+ XUARTPS_CR_OFFSET);
+
+ spin_unlock_irqrestore(&xuartps->port->lock, flags);
+
+ return NOTIFY_OK;
+ }
+ case POST_RATE_CHANGE:
+ /*
+ * Set clk dividers to generate correct baud with new clock
+ * frequency.
+ */
+
+ spin_lock_irqsave(&xuartps->port->lock, flags);
+
+ locked = 1;
+ port->uartclk = ndata->new_rate;
+
+ xuartps->baud = xuartps_set_baud_rate(xuartps->port,
+ xuartps->baud);
+ /* fall through */
+ case ABORT_RATE_CHANGE:
+ if (!locked)
+ spin_lock_irqsave(&xuartps->port->lock, flags);
+
+ /* Set TX/RX Reset */
+ xuartps_writel(xuartps_readl(XUARTPS_CR_OFFSET) |
+ (XUARTPS_CR_TXRST | XUARTPS_CR_RXRST),
+ XUARTPS_CR_OFFSET);
+
+ while (xuartps_readl(XUARTPS_CR_OFFSET) &
+ (XUARTPS_CR_TXRST | XUARTPS_CR_RXRST))
+ cpu_relax();
+
+ /*
+ * Clear the RX disable and TX disable bits and then set the TX
+ * enable bit and RX enable bit to enable the transmitter and
+ * receiver.
+ */
+ xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
+ ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
+ xuartps_writel(
+ (ctrl_reg & ~(XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS)) |
+ (XUARTPS_CR_TX_EN | XUARTPS_CR_RX_EN),
+ XUARTPS_CR_OFFSET);
+
+ spin_unlock_irqrestore(&xuartps->port->lock, flags);
+
+ return NOTIFY_OK;
+ default:
+ return NOTIFY_DONE;
+ }
+}
+#endif
+
/*----------------------Uart Operations---------------------------*/
/**
@@ -346,7 +551,7 @@ static void xuartps_start_tx(struct uart_port *port)
port->state->xmit.tail = (port->state->xmit.tail + 1) &
(UART_XMIT_SIZE - 1);
}
-
+ xuartps_writel(XUARTPS_IXR_TXEMPTY, XUARTPS_ISR_OFFSET);
/* Enable the TX Empty interrupt */
xuartps_writel(XUARTPS_IXR_TXEMPTY, XUARTPS_IER_OFFSET);
@@ -437,7 +642,7 @@ static void xuartps_set_termios(struct uart_port *port,
struct ktermios *termios, struct ktermios *old)
{
unsigned int cval = 0;
- unsigned int baud;
+ unsigned int baud, minbaud, maxbaud;
unsigned long flags;
unsigned int ctrl_reg, mode_reg;
@@ -454,8 +659,14 @@ static void xuartps_set_termios(struct uart_port *port,
(XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS),
XUARTPS_CR_OFFSET);
- /* Min baud rate = 6bps and Max Baud Rate is 10Mbps for 100Mhz clk */
- baud = uart_get_baud_rate(port, termios, old, 0, 10000000);
+ /*
+ * Min baud rate = 6bps and Max Baud Rate is 10Mbps for 100Mhz clk
+ * min and max baud should be calculated here based on port->uartclk.
+ * this way we get a valid baud and can safely call set_baud()
+ */
+ minbaud = port->uartclk / ((XUARTPS_BDIV_MAX + 1) * XUARTPS_CD_MAX * 8);
+ maxbaud = port->uartclk / (XUARTPS_BDIV_MIN + 1);
+ baud = uart_get_baud_rate(port, termios, old, minbaud, maxbaud);
baud = xuartps_set_baud_rate(port, baud);
if (tty_termios_baud_rate(termios))
tty_termios_encode_baud_rate(termios, baud, baud);
@@ -480,7 +691,7 @@ static void xuartps_set_termios(struct uart_port *port,
| (XUARTPS_CR_TX_EN | XUARTPS_CR_RX_EN),
XUARTPS_CR_OFFSET);
- xuartps_writel(10, XUARTPS_RXTOUT_OFFSET);
+ xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
port->read_status_mask = XUARTPS_IXR_TXEMPTY | XUARTPS_IXR_RXTRIG |
XUARTPS_IXR_OVERRUN | XUARTPS_IXR_TOUT;
@@ -531,13 +742,17 @@ static void xuartps_set_termios(struct uart_port *port,
cval |= XUARTPS_MR_PARITY_MARK;
else
cval |= XUARTPS_MR_PARITY_SPACE;
- } else if (termios->c_cflag & PARODD)
+ } else {
+ if (termios->c_cflag & PARODD)
cval |= XUARTPS_MR_PARITY_ODD;
else
cval |= XUARTPS_MR_PARITY_EVEN;
- } else
+ }
+ } else {
cval |= XUARTPS_MR_PARITY_NONE;
- xuartps_writel(cval , XUARTPS_MR_OFFSET);
+ }
+ cval |= mode_reg & 1;
+ xuartps_writel(cval, XUARTPS_MR_OFFSET);
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -583,11 +798,17 @@ static int xuartps_startup(struct uart_port *port)
| XUARTPS_MR_PARITY_NONE | XUARTPS_MR_CHARLEN_8_BIT,
XUARTPS_MR_OFFSET);
- /* Set the RX FIFO Trigger level to 14 assuming FIFO size as 16 */
- xuartps_writel(14, XUARTPS_RXWM_OFFSET);
+ /*
+ * Set the RX FIFO Trigger level to use most of the FIFO, but it
+ * can be tuned with a module parameter
+ */
+ xuartps_writel(rx_trigger_level, XUARTPS_RXWM_OFFSET);
- /* Receive Timeout register is enabled with value of 10 */
- xuartps_writel(10, XUARTPS_RXTOUT_OFFSET);
+ /*
+ * Receive Timeout register is enabled but it
+ * can be tuned with a module parameter
+ */
+ xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
/* Clear out any pending interrupts before enabling them */
xuartps_writel(xuartps_readl(XUARTPS_ISR_OFFSET), XUARTPS_ISR_OFFSET);
@@ -727,6 +948,54 @@ static void xuartps_enable_ms(struct uart_port *port)
/* N/A */
}
+#ifdef CONFIG_CONSOLE_POLL
+static int xuartps_poll_get_char(struct uart_port *port)
+{
+ u32 imr;
+ int c;
+
+ /* Disable all interrupts */
+ imr = xuartps_readl(XUARTPS_IMR_OFFSET);
+ xuartps_writel(imr, XUARTPS_IDR_OFFSET);
+
+ /* Check if FIFO is empty */
+ if (xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_RXEMPTY)
+ c = NO_POLL_CHAR;
+ else /* Read a character */
+ c = (unsigned char) xuartps_readl(XUARTPS_FIFO_OFFSET);
+
+ /* Enable interrupts */
+ xuartps_writel(imr, XUARTPS_IER_OFFSET);
+
+ return c;
+}
+
+static void xuartps_poll_put_char(struct uart_port *port, unsigned char c)
+{
+ u32 imr;
+
+ /* Disable all interrupts */
+ imr = xuartps_readl(XUARTPS_IMR_OFFSET);
+ xuartps_writel(imr, XUARTPS_IDR_OFFSET);
+
+ /* Wait until FIFO is empty */
+ while (!(xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_TXEMPTY))
+ cpu_relax();
+
+ /* Write a character */
+ xuartps_writel(c, XUARTPS_FIFO_OFFSET);
+
+ /* Wait until FIFO is empty */
+ while (!(xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_TXEMPTY))
+ cpu_relax();
+
+ /* Enable interrupts */
+ xuartps_writel(imr, XUARTPS_IER_OFFSET);
+
+ return;
+}
+#endif
+
/** The UART operations structure
*/
static struct uart_ops xuartps_ops = {
@@ -759,6 +1028,10 @@ static struct uart_ops xuartps_ops = {
.config_port = xuartps_config_port, /* Configure when driver
* adds a xuartps port
*/
+#ifdef CONFIG_CONSOLE_POLL
+ .poll_get_char = xuartps_poll_get_char,
+ .poll_put_char = xuartps_poll_put_char,
+#endif
};
static struct uart_port xuartps_port[2];
@@ -837,7 +1110,7 @@ static void xuartps_console_write(struct console *co, const char *s,
{
struct uart_port *port = &xuartps_port[co->index];
unsigned long flags;
- unsigned int imr;
+ unsigned int imr, ctrl;
int locked = 1;
if (oops_in_progress)
@@ -849,9 +1122,19 @@ static void xuartps_console_write(struct console *co, const char *s,
imr = xuartps_readl(XUARTPS_IMR_OFFSET);
xuartps_writel(imr, XUARTPS_IDR_OFFSET);
+ /*
+ * Make sure that the tx part is enabled. Set the TX enable bit and
+ * clear the TX disable bit to enable the transmitter.
+ */
+ ctrl = xuartps_readl(XUARTPS_CR_OFFSET);
+ xuartps_writel((ctrl & ~XUARTPS_CR_TX_DIS) | XUARTPS_CR_TX_EN,
+ XUARTPS_CR_OFFSET);
+
uart_console_write(port, s, count, xuartps_console_putchar);
xuartps_console_wait_tx(port);
+ xuartps_writel(ctrl, XUARTPS_CR_OFFSET);
+
/* restore interrupt state, it seems like there may be a h/w bug
* in that the interrupt enable register should not need to be
* written based on the data sheet
@@ -933,6 +1216,119 @@ static struct uart_driver xuartps_uart_driver = {
#endif
};
+#ifdef CONFIG_PM_SLEEP
+/**
+ * xuartps_suspend - suspend event
+ * @device: Pointer to the device structure
+ *
+ * Returns 0
+ */
+static int xuartps_suspend(struct device *device)
+{
+ struct uart_port *port = dev_get_drvdata(device);
+ struct tty_struct *tty;
+ struct device *tty_dev;
+ int may_wake = 0;
+
+ /* Get the tty which could be NULL so don't assume it's valid */
+ tty = tty_port_tty_get(&port->state->port);
+ if (tty) {
+ tty_dev = tty->dev;
+ may_wake = device_may_wakeup(tty_dev);
+ tty_kref_put(tty);
+ }
+
+ /*
+ * Call the API provided in serial_core.c file which handles
+ * the suspend.
+ */
+ uart_suspend_port(&xuartps_uart_driver, port);
+ if (console_suspend_enabled && !may_wake) {
+ struct xuartps *xuartps = port->private_data;
+
+ clk_disable(xuartps->refclk);
+ clk_disable(xuartps->aperclk);
+ } else {
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&port->lock, flags);
+ /* Empty the receive FIFO 1st before making changes */
+ while (!(xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_RXEMPTY))
+ xuartps_readl(XUARTPS_FIFO_OFFSET);
+ /* set RX trigger level to 1 */
+ xuartps_writel(1, XUARTPS_RXWM_OFFSET);
+ /* disable RX timeout interrups */
+ xuartps_writel(XUARTPS_IXR_TOUT, XUARTPS_IDR_OFFSET);
+ spin_unlock_irqrestore(&port->lock, flags);
+ }
+
+ return 0;
+}
+
+/**
+ * xuartps_resume - Resume after a previous suspend
+ * @device: Pointer to the device structure
+ *
+ * Returns 0
+ */
+static int xuartps_resume(struct device *device)
+{
+ struct uart_port *port = dev_get_drvdata(device);
+ unsigned long flags = 0;
+ u32 ctrl_reg;
+ struct tty_struct *tty;
+ struct device *tty_dev;
+ int may_wake = 0;
+
+ /* Get the tty which could be NULL so don't assume it's valid */
+ tty = tty_port_tty_get(&port->state->port);
+ if (tty) {
+ tty_dev = tty->dev;
+ may_wake = device_may_wakeup(tty_dev);
+ tty_kref_put(tty);
+ }
+
+ if (console_suspend_enabled && !may_wake) {
+ struct xuartps *xuartps = port->private_data;
+
+ clk_enable(xuartps->aperclk);
+ clk_enable(xuartps->refclk);
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ /* Set TX/RX Reset */
+ xuartps_writel(xuartps_readl(XUARTPS_CR_OFFSET) |
+ (XUARTPS_CR_TXRST | XUARTPS_CR_RXRST),
+ XUARTPS_CR_OFFSET);
+ while (xuartps_readl(XUARTPS_CR_OFFSET) &
+ (XUARTPS_CR_TXRST | XUARTPS_CR_RXRST))
+ cpu_relax();
+
+ /* restore rx timeout value */
+ xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
+ /* Enable Tx/Rx */
+ ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
+ xuartps_writel(
+ (ctrl_reg & ~(XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS)) |
+ (XUARTPS_CR_TX_EN | XUARTPS_CR_RX_EN),
+ XUARTPS_CR_OFFSET);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+ } else {
+ spin_lock_irqsave(&port->lock, flags);
+ /* restore original rx trigger level */
+ xuartps_writel(rx_trigger_level, XUARTPS_RXWM_OFFSET);
+ /* enable RX timeout interrupt */
+ xuartps_writel(XUARTPS_IXR_TOUT, XUARTPS_IER_OFFSET);
+ spin_unlock_irqrestore(&port->lock, flags);
+ }
+
+ return uart_resume_port(&xuartps_uart_driver, port);
+}
+#endif /* ! CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(xuartps_dev_pm_ops, xuartps_suspend, xuartps_resume);
+
/* ---------------------------------------------------------------------
* Platform bus binding
*/
@@ -949,27 +1345,26 @@ static int xuartps_probe(struct platform_device *pdev)
struct resource *res, *res2;
struct xuartps *xuartps_data;
- xuartps_data = kzalloc(sizeof(*xuartps_data), GFP_KERNEL);
+ xuartps_data = devm_kzalloc(&pdev->dev, sizeof(*xuartps_data),
+ GFP_KERNEL);
if (!xuartps_data)
return -ENOMEM;
- xuartps_data->aperclk = clk_get(&pdev->dev, "aper_clk");
+ xuartps_data->aperclk = devm_clk_get(&pdev->dev, "aper_clk");
if (IS_ERR(xuartps_data->aperclk)) {
dev_err(&pdev->dev, "aper_clk clock not found.\n");
- rc = PTR_ERR(xuartps_data->aperclk);
- goto err_out_free;
+ return PTR_ERR(xuartps_data->aperclk);
}
- xuartps_data->refclk = clk_get(&pdev->dev, "ref_clk");
+ xuartps_data->refclk = devm_clk_get(&pdev->dev, "ref_clk");
if (IS_ERR(xuartps_data->refclk)) {
dev_err(&pdev->dev, "ref_clk clock not found.\n");
- rc = PTR_ERR(xuartps_data->refclk);
- goto err_out_clk_put_aper;
+ return PTR_ERR(xuartps_data->refclk);
}
rc = clk_prepare_enable(xuartps_data->aperclk);
if (rc) {
dev_err(&pdev->dev, "Unable to enable APER clock.\n");
- goto err_out_clk_put;
+ return rc;
}
rc = clk_prepare_enable(xuartps_data->refclk);
if (rc) {
@@ -989,13 +1384,21 @@ static int xuartps_probe(struct platform_device *pdev)
goto err_out_clk_disable;
}
+#ifdef CONFIG_COMMON_CLK
+ xuartps_data->clk_rate_change_nb.notifier_call =
+ xuartps_clk_notifier_cb;
+ if (clk_notifier_register(xuartps_data->refclk,
+ &xuartps_data->clk_rate_change_nb))
+ dev_warn(&pdev->dev, "Unable to register clock notifier.\n");
+#endif
+
/* Initialize the port structure */
port = xuartps_get_port();
if (!port) {
dev_err(&pdev->dev, "Cannot get uart_port structure\n");
rc = -ENODEV;
- goto err_out_clk_disable;
+ goto err_out_notif_unreg;
} else {
/* Register the port.
* This function also registers this device with the tty layer
@@ -1006,26 +1409,26 @@ static int xuartps_probe(struct platform_device *pdev)
port->dev = &pdev->dev;
port->uartclk = clk_get_rate(xuartps_data->refclk);
port->private_data = xuartps_data;
+ xuartps_data->port = port;
platform_set_drvdata(pdev, port);
rc = uart_add_one_port(&xuartps_uart_driver, port);
if (rc) {
dev_err(&pdev->dev,
"uart_add_one_port() failed; err=%i\n", rc);
- goto err_out_clk_disable;
+ goto err_out_notif_unreg;
}
return 0;
}
+err_out_notif_unreg:
+#ifdef CONFIG_COMMON_CLK
+ clk_notifier_unregister(xuartps_data->refclk,
+ &xuartps_data->clk_rate_change_nb);
+#endif
err_out_clk_disable:
clk_disable_unprepare(xuartps_data->refclk);
err_out_clk_dis_aper:
clk_disable_unprepare(xuartps_data->aperclk);
-err_out_clk_put:
- clk_put(xuartps_data->refclk);
-err_out_clk_put_aper:
- clk_put(xuartps_data->aperclk);
-err_out_free:
- kfree(xuartps_data);
return rc;
}
@@ -1043,13 +1446,14 @@ static int xuartps_remove(struct platform_device *pdev)
int rc;
/* Remove the xuartps port from the serial core */
+#ifdef CONFIG_COMMON_CLK
+ clk_notifier_unregister(xuartps_data->refclk,
+ &xuartps_data->clk_rate_change_nb);
+#endif
rc = uart_remove_one_port(&xuartps_uart_driver, port);
port->mapbase = 0;
clk_disable_unprepare(xuartps_data->refclk);
clk_disable_unprepare(xuartps_data->aperclk);
- clk_put(xuartps_data->refclk);
- clk_put(xuartps_data->aperclk);
- kfree(xuartps_data);
return rc;
}
@@ -1067,6 +1471,7 @@ static struct platform_driver xuartps_platform_driver = {
.owner = THIS_MODULE,
.name = XUARTPS_NAME, /* Driver name */
.of_match_table = xuartps_of_match,
+ .pm = &xuartps_dev_pm_ops,
},
};
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index e1ce141bad5e..5ae14b46cce0 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -3404,8 +3404,8 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
/* If port is closing, signal caller to try again */
if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
- if (info->port.flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->port.close_wait);
+ wait_event_interruptible_tty(tty, info->port.close_wait,
+ !(info->port.flags & ASYNC_CLOSING));
retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
goto cleanup;
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 1abf946463f6..c359a91f7346 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -674,8 +674,8 @@ static int open(struct tty_struct *tty, struct file *filp)
/* If port is closing, signal caller to try again */
if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
- if (info->port.flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->port.close_wait);
+ wait_event_interruptible_tty(tty, info->port.close_wait,
+ !(info->port.flags & ASYNC_CLOSING));
retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
goto cleanup;
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index dc6e96996ead..144202eef6fe 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -754,8 +754,8 @@ static int open(struct tty_struct *tty, struct file *filp)
/* If port is closing, signal caller to try again */
if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
- if (info->port.flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->port.close_wait);
+ wait_event_interruptible_tty(tty, info->port.close_wait,
+ !(info->port.flags & ASYNC_CLOSING));
retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
goto cleanup;
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 40a9fe9d3b10..ce396ecdf412 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -51,7 +51,7 @@
#include <asm/irq_regs.h>
/* Whether we react on sysrq keys or just ignore them */
-static int __read_mostly sysrq_enabled = SYSRQ_DEFAULT_ENABLE;
+static int __read_mostly sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE;
static bool __read_mostly sysrq_always_enabled;
unsigned short platform_sysrq_reset_seq[] __weak = { KEY_RESERVED };
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index c043136fbe51..765125dff20e 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -11,7 +11,6 @@
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/sched.h>
-#include <linux/init.h>
#include <linux/wait.h>
#include <linux/bitops.h>
#include <linux/delay.h>
@@ -26,7 +25,7 @@
* Byte threshold to limit memory consumption for flip buffers.
* The actual memory limit is > 2x this amount.
*/
-#define TTYB_MEM_LIMIT 65536
+#define TTYB_DEFAULT_MEM_LIMIT 65536
/*
* We default to dicing tty buffer allocations to this many characters
@@ -89,9 +88,10 @@ void tty_buffer_unlock_exclusive(struct tty_port *port)
int tty_buffer_space_avail(struct tty_port *port)
{
- int space = TTYB_MEM_LIMIT - atomic_read(&port->buf.memory_used);
+ int space = port->buf.mem_limit - atomic_read(&port->buf.mem_used);
return max(space, 0);
}
+EXPORT_SYMBOL_GPL(tty_buffer_space_avail);
static void tty_buffer_reset(struct tty_buffer *p, size_t size)
{
@@ -100,6 +100,7 @@ static void tty_buffer_reset(struct tty_buffer *p, size_t size)
p->next = NULL;
p->commit = 0;
p->read = 0;
+ p->flags = 0;
}
/**
@@ -129,7 +130,7 @@ void tty_buffer_free_all(struct tty_port *port)
buf->head = &buf->sentinel;
buf->tail = &buf->sentinel;
- atomic_set(&buf->memory_used, 0);
+ atomic_set(&buf->mem_used, 0);
}
/**
@@ -162,7 +163,7 @@ static struct tty_buffer *tty_buffer_alloc(struct tty_port *port, size_t size)
/* Should possibly check if this fails for the largest buffer we
have queued and recycle that ? */
- if (atomic_read(&port->buf.memory_used) > TTYB_MEM_LIMIT)
+ if (atomic_read(&port->buf.mem_used) > port->buf.mem_limit)
return NULL;
p = kmalloc(sizeof(struct tty_buffer) + 2 * size, GFP_ATOMIC);
if (p == NULL)
@@ -170,7 +171,7 @@ static struct tty_buffer *tty_buffer_alloc(struct tty_port *port, size_t size)
found:
tty_buffer_reset(p, size);
- atomic_add(size, &port->buf.memory_used);
+ atomic_add(size, &port->buf.mem_used);
return p;
}
@@ -188,7 +189,7 @@ static void tty_buffer_free(struct tty_port *port, struct tty_buffer *b)
struct tty_bufhead *buf = &port->buf;
/* Dumb strategy for now - should keep some stats */
- WARN_ON(atomic_sub_return(b->size, &buf->memory_used) < 0);
+ WARN_ON(atomic_sub_return(b->size, &buf->mem_used) < 0);
if (b->size > MIN_TTYB_SIZE)
kfree(b);
@@ -200,9 +201,7 @@ static void tty_buffer_free(struct tty_port *port, struct tty_buffer *b)
* tty_buffer_flush - flush full tty buffers
* @tty: tty to flush
*
- * flush all the buffers containing receive data. If the buffer is
- * being processed by flush_to_ldisc then we defer the processing
- * to that function
+ * flush all the buffers containing receive data.
*
* Locking: takes buffer lock to ensure single-threaded flip buffer
* 'consumer'
@@ -230,31 +229,49 @@ void tty_buffer_flush(struct tty_struct *tty)
* tty_buffer_request_room - grow tty buffer if needed
* @tty: tty structure
* @size: size desired
+ * @flags: buffer flags if new buffer allocated (default = 0)
*
* Make at least size bytes of linear space available for the tty
* buffer. If we fail return the size we managed to find.
+ *
+ * Will change over to a new buffer if the current buffer is encoded as
+ * TTY_NORMAL (so has no flags buffer) and the new buffer requires
+ * a flags buffer.
*/
-int tty_buffer_request_room(struct tty_port *port, size_t size)
+static int __tty_buffer_request_room(struct tty_port *port, size_t size,
+ int flags)
{
struct tty_bufhead *buf = &port->buf;
struct tty_buffer *b, *n;
- int left;
+ int left, change;
b = buf->tail;
- left = b->size - b->used;
+ if (b->flags & TTYB_NORMAL)
+ left = 2 * b->size - b->used;
+ else
+ left = b->size - b->used;
- if (left < size) {
+ change = (b->flags & TTYB_NORMAL) && (~flags & TTYB_NORMAL);
+ if (change || left < size) {
/* This is the slow path - looking for new buffers to use */
if ((n = tty_buffer_alloc(port, size)) != NULL) {
+ n->flags = flags;
buf->tail = n;
b->commit = b->used;
smp_mb();
b->next = n;
- } else
+ } else if (change)
+ size = 0;
+ else
size = left;
}
return size;
}
+
+int tty_buffer_request_room(struct tty_port *port, size_t size)
+{
+ return __tty_buffer_request_room(port, size, 0);
+}
EXPORT_SYMBOL_GPL(tty_buffer_request_room);
/**
@@ -274,12 +291,14 @@ int tty_insert_flip_string_fixed_flag(struct tty_port *port,
int copied = 0;
do {
int goal = min_t(size_t, size - copied, TTY_BUFFER_PAGE);
- int space = tty_buffer_request_room(port, goal);
+ int flags = (flag == TTY_NORMAL) ? TTYB_NORMAL : 0;
+ int space = __tty_buffer_request_room(port, goal, flags);
struct tty_buffer *tb = port->buf.tail;
if (unlikely(space == 0))
break;
memcpy(char_buf_ptr(tb, tb->used), chars, space);
- memset(flag_buf_ptr(tb, tb->used), flag, space);
+ if (~tb->flags & TTYB_NORMAL)
+ memset(flag_buf_ptr(tb, tb->used), flag, space);
tb->used += space;
copied += space;
chars += space;
@@ -362,52 +381,28 @@ EXPORT_SYMBOL(tty_schedule_flip);
int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars,
size_t size)
{
- int space = tty_buffer_request_room(port, size);
+ int space = __tty_buffer_request_room(port, size, TTYB_NORMAL);
if (likely(space)) {
struct tty_buffer *tb = port->buf.tail;
*chars = char_buf_ptr(tb, tb->used);
- memset(flag_buf_ptr(tb, tb->used), TTY_NORMAL, space);
+ if (~tb->flags & TTYB_NORMAL)
+ memset(flag_buf_ptr(tb, tb->used), TTY_NORMAL, space);
tb->used += space;
}
return space;
}
EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
-/**
- * tty_prepare_flip_string_flags - make room for characters
- * @port: tty port
- * @chars: return pointer for character write area
- * @flags: return pointer for status flag write area
- * @size: desired size
- *
- * Prepare a block of space in the buffer for data. Returns the length
- * available and buffer pointer to the space which is now allocated and
- * accounted for as ready for characters. This is used for drivers
- * that need their own block copy routines into the buffer. There is no
- * guarantee the buffer is a DMA target!
- */
-
-int tty_prepare_flip_string_flags(struct tty_port *port,
- unsigned char **chars, char **flags, size_t size)
-{
- int space = tty_buffer_request_room(port, size);
- if (likely(space)) {
- struct tty_buffer *tb = port->buf.tail;
- *chars = char_buf_ptr(tb, tb->used);
- *flags = flag_buf_ptr(tb, tb->used);
- tb->used += space;
- }
- return space;
-}
-EXPORT_SYMBOL_GPL(tty_prepare_flip_string_flags);
-
static int
receive_buf(struct tty_struct *tty, struct tty_buffer *head, int count)
{
struct tty_ldisc *disc = tty->ldisc;
unsigned char *p = char_buf_ptr(head, head->read);
- char *f = flag_buf_ptr(head, head->read);
+ char *f = NULL;
+
+ if (~head->flags & TTYB_NORMAL)
+ f = flag_buf_ptr(head, head->read);
if (disc->ops->receive_buf2)
count = disc->ops->receive_buf2(tty, p, f, count);
@@ -533,7 +528,25 @@ void tty_buffer_init(struct tty_port *port)
buf->head = &buf->sentinel;
buf->tail = &buf->sentinel;
init_llist_head(&buf->free);
- atomic_set(&buf->memory_used, 0);
+ atomic_set(&buf->mem_used, 0);
atomic_set(&buf->priority, 0);
INIT_WORK(&buf->work, flush_to_ldisc);
+ buf->mem_limit = TTYB_DEFAULT_MEM_LIMIT;
+}
+
+/**
+ * tty_buffer_set_limit - change the tty buffer memory limit
+ * @port: tty port to change
+ *
+ * Change the tty buffer memory limit.
+ * Must be called before the other tty buffer functions are used.
+ */
+
+int tty_buffer_set_limit(struct tty_port *port, int limit)
+{
+ if (limit < MIN_TTYB_SIZE)
+ return -EINVAL;
+ port->buf.mem_limit = limit;
+ return 0;
}
+EXPORT_SYMBOL_GPL(tty_buffer_set_limit);
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 3a1a01af9a80..c74a00ad7add 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2086,6 +2086,7 @@ retry_open:
filp->f_op = &tty_fops;
goto retry_open;
}
+ clear_bit(TTY_HUPPED, &tty->flags);
tty_unlock(tty);
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 6458e11e8e9d..2d822aa259b2 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -11,7 +11,6 @@
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/proc_fs.h>
-#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/wait.h>
diff --git a/drivers/tty/tty_ldsem.c b/drivers/tty/tty_ldsem.c
index 22fad8ad5ac2..d8a55e87877f 100644
--- a/drivers/tty/tty_ldsem.c
+++ b/drivers/tty/tty_ldsem.c
@@ -86,11 +86,21 @@ static inline long ldsem_atomic_update(long delta, struct ld_semaphore *sem)
return atomic_long_add_return(delta, (atomic_long_t *)&sem->count);
}
+/*
+ * ldsem_cmpxchg() updates @*old with the last-known sem->count value.
+ * Returns 1 if count was successfully changed; @*old will have @new value.
+ * Returns 0 if count was not changed; @*old will have most recent sem->count
+ */
static inline int ldsem_cmpxchg(long *old, long new, struct ld_semaphore *sem)
{
- long tmp = *old;
- *old = atomic_long_cmpxchg(&sem->count, *old, new);
- return *old == tmp;
+ long tmp = atomic_long_cmpxchg(&sem->count, *old, new);
+ if (tmp == *old) {
+ *old = new;
+ return 1;
+ } else {
+ *old = tmp;
+ return 0;
+ }
}
/*
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index f597e88a705d..3f746c8eb0dd 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -12,7 +12,6 @@
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/sched.h>
-#include <linux/init.h>
#include <linux/wait.h>
#include <linux/bitops.h>
#include <linux/delay.h>
@@ -140,6 +139,10 @@ EXPORT_SYMBOL(tty_port_destroy);
static void tty_port_destructor(struct kref *kref)
{
struct tty_port *port = container_of(kref, struct tty_port, kref);
+
+ /* check if last port ref was dropped before tty release */
+ if (WARN_ON(port->itty))
+ return;
if (port->xmit_buf)
free_page((unsigned long)port->xmit_buf);
tty_port_destroy(port);
@@ -480,8 +483,6 @@ int tty_port_close_start(struct tty_port *port,
if (port->count) {
spin_unlock_irqrestore(&port->lock, flags);
- if (port->ops->drop)
- port->ops->drop(port);
return 0;
}
set_bit(ASYNCB_CLOSING, &port->flags);
@@ -500,9 +501,7 @@ int tty_port_close_start(struct tty_port *port,
/* Flush the ldisc buffering */
tty_ldisc_flush(tty);
- /* Don't call port->drop for the last reference. Callers will want
- to drop the last active reference in ->shutdown() or the tty
- shutdown path */
+ /* Report to caller this is the last port reference */
return 1;
}
EXPORT_SYMBOL(tty_port_close_start);
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 9a8e8c5a0c73..61b1137d7e56 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1300,21 +1300,30 @@ static void csi_m(struct vc_data *vc)
case 27:
vc->vc_reverse = 0;
break;
- case 38: /* ANSI X3.64-1979 (SCO-ish?)
- * Enables underscore, white foreground
- * with white underscore (Linux - use
- * default foreground).
+ case 38:
+ case 48: /* ITU T.416
+ * Higher colour modes.
+ * They break the usual properties of SGR codes
+ * and thus need to be detected and ignored by
+ * hand. Strictly speaking, that standard also
+ * wants : rather than ; as separators, contrary
+ * to ECMA-48, but no one produces such codes
+ * and almost no one accepts them.
*/
- vc->vc_color = (vc->vc_def_color & 0x0f) | (vc->vc_color & 0xf0);
- vc->vc_underline = 1;
+ i++;
+ if (i > vc->vc_npar)
+ break;
+ if (vc->vc_par[i] == 5) /* 256 colours */
+ i++; /* ubiquitous */
+ else if (vc->vc_par[i] == 2) /* 24 bit colours */
+ i += 3; /* extremely rare */
+ /* Subcommands 3 (CMY) and 4 (CMYK) are so insane
+ * that detecting them is not worth the few extra
+ * bytes of kernel's size.
+ */
break;
- case 39: /* ANSI X3.64-1979 (SCO-ish?)
- * Disable underline option.
- * Reset colour to default? It did this
- * before...
- */
+ case 39:
vc->vc_color = (vc->vc_def_color & 0x0f) | (vc->vc_color & 0xf0);
- vc->vc_underline = 0;
break;
case 49:
vc->vc_color = (vc->vc_def_color & 0xf0) | (vc->vc_color & 0x0f);