From 89bf6dc51ac7adb5a7d443648d9eb76909a1df8e Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 7 May 2008 11:41:26 +0800 Subject: Blackfin Serial Driver: macro away the IER differences between processors Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- drivers/serial/bfin_5xx.c | 58 ++++------------------------------------------- 1 file changed, 4 insertions(+), 54 deletions(-) (limited to 'drivers/serial') diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c index 8a2f6a1baa74..869c99aa77a4 100644 --- a/drivers/serial/bfin_5xx.c +++ b/drivers/serial/bfin_5xx.c @@ -65,9 +65,6 @@ static void bfin_serial_stop_tx(struct uart_port *port) { struct bfin_serial_port *uart = (struct bfin_serial_port *)port; struct circ_buf *xmit = &uart->port.info->xmit; -#if !defined(CONFIG_BF54x) && !defined(CONFIG_SERIAL_BFIN_DMA) - unsigned short ier; -#endif while (!(UART_GET_LSR(uart) & TEMT)) cpu_relax(); @@ -82,12 +79,8 @@ static void bfin_serial_stop_tx(struct uart_port *port) #ifdef CONFIG_BF54x /* Clear TFI bit */ UART_PUT_LSR(uart, TFI); - UART_CLEAR_IER(uart, ETBEI); -#else - ier = UART_GET_IER(uart); - ier &= ~ETBEI; - UART_PUT_IER(uart, ier); #endif + UART_CLEAR_IER(uart, ETBEI); #endif } @@ -102,14 +95,7 @@ static void bfin_serial_start_tx(struct uart_port *port) if (uart->tx_done) bfin_serial_dma_tx_chars(uart); #else -#ifdef CONFIG_BF54x UART_SET_IER(uart, ETBEI); -#else - unsigned short ier; - ier = UART_GET_IER(uart); - ier |= ETBEI; - UART_PUT_IER(uart, ier); -#endif bfin_serial_tx_chars(uart); #endif } @@ -120,21 +106,10 @@ static void bfin_serial_start_tx(struct uart_port *port) static void bfin_serial_stop_rx(struct uart_port *port) { struct bfin_serial_port *uart = (struct bfin_serial_port *)port; -#ifdef CONFIG_KGDB_UART - if (uart->port.line != CONFIG_KGDB_UART_PORT) { +#ifdef CONFIG_KGDB_UART + if (uart->port.line != CONFIG_KGDB_UART_PORT) #endif -#ifdef CONFIG_BF54x UART_CLEAR_IER(uart, ERBFI); -#else - unsigned short ier; - - ier = UART_GET_IER(uart); - ier &= ~ERBFI; - UART_PUT_IER(uart, ier); -#endif -#ifdef CONFIG_KGDB_UART - } -#endif } /* @@ -208,9 +183,6 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart) struct tty_struct *tty = uart->port.info->tty; unsigned int status, ch, flg; static struct timeval anomaly_start = { .tv_sec = 0 }; -#ifdef CONFIG_KGDB_UART - struct pt_regs *regs = get_irq_regs(); -#endif status = UART_GET_LSR(uart); UART_CLEAR_LSR(uart); @@ -220,6 +192,7 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart) #ifdef CONFIG_KGDB_UART if (uart->port.line == CONFIG_KGDB_UART_PORT) { + struct pt_regs *regs = get_irq_regs(); if (uart->port.cons->index == CONFIG_KGDB_UART_PORT && ch == 0x1) { /* Ctrl + A */ kgdb_breakkey_pressed(regs); return; @@ -391,7 +364,6 @@ static void bfin_serial_do_work(struct work_struct *work) static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart) { struct circ_buf *xmit = &uart->port.info->xmit; - unsigned short ier; uart->tx_done = 0; @@ -429,13 +401,7 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart) set_dma_x_modify(uart->tx_dma_channel, 1); enable_dma(uart->tx_dma_channel); -#ifdef CONFIG_BF54x UART_SET_IER(uart, ETBEI); -#else - ier = UART_GET_IER(uart); - ier |= ETBEI; - UART_PUT_IER(uart, ier); -#endif } static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart) @@ -513,19 +479,12 @@ static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id) { struct bfin_serial_port *uart = dev_id; struct circ_buf *xmit = &uart->port.info->xmit; - unsigned short ier; spin_lock(&uart->port.lock); if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) { disable_dma(uart->tx_dma_channel); clear_dma_irqstat(uart->tx_dma_channel); -#ifdef CONFIG_BF54x UART_CLEAR_IER(uart, ETBEI); -#else - ier = UART_GET_IER(uart); - ier &= ~ETBEI; - UART_PUT_IER(uart, ier); -#endif xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1); uart->port.icount.tx += uart->tx_count; @@ -701,7 +660,6 @@ static int bfin_serial_startup(struct uart_port *port) # endif } - if (request_irq (uart->port.irq+1, bfin_serial_tx_int, IRQF_DISABLED, "BFIN_UART_TX", uart)) { @@ -710,11 +668,7 @@ static int bfin_serial_startup(struct uart_port *port) return -EBUSY; } #endif -#ifdef CONFIG_BF54x UART_SET_IER(uart, ERBFI); -#else - UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI); -#endif return 0; } @@ -1290,11 +1244,7 @@ static int __init bfin_serial_init(void) request_irq(uart->port.irq, bfin_serial_rx_int, IRQF_DISABLED, "BFIN_UART_RX", uart); pr_info("Request irq for kgdb uart port\n"); -#ifdef CONFIG_BF54x UART_SET_IER(uart, ERBFI); -#else - UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI); -#endif SSYNC(); t.c_cflag = CS8|B57600; t.c_iflag = 0; -- cgit v1.2.3-58-ga151 From 45828b812ddb608ddf83eff11601f62b726d13ab Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 7 May 2008 11:41:26 +0800 Subject: Blackfin Serial Driver: abstract away DLAB differences into header Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- drivers/serial/bfin_5xx.c | 40 ++++------------------- include/asm-blackfin/mach-bf527/bfin_serial_5xx.h | 3 ++ include/asm-blackfin/mach-bf533/bfin_serial_5xx.h | 3 ++ include/asm-blackfin/mach-bf537/bfin_serial_5xx.h | 3 ++ include/asm-blackfin/mach-bf548/bfin_serial_5xx.h | 3 ++ include/asm-blackfin/mach-bf561/bfin_serial_5xx.h | 3 ++ 6 files changed, 22 insertions(+), 33 deletions(-) (limited to 'drivers/serial') diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c index 869c99aa77a4..d6b4ead693b7 100644 --- a/drivers/serial/bfin_5xx.c +++ b/drivers/serial/bfin_5xx.c @@ -136,10 +136,7 @@ void kgdb_put_debug_char(int chr) SSYNC(); } -#ifndef CONFIG_BF54x - UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB)); - SSYNC(); -#endif + UART_CLEAR_DLAB(uart); UART_PUT_CHAR(uart, (unsigned char)chr); SSYNC(); } @@ -158,10 +155,7 @@ int kgdb_get_debug_char(void) while(!(UART_GET_LSR(uart) & DR)) { SSYNC(); } -#ifndef CONFIG_BF54x - UART_PUT_LCR(uart, UART_GET_LCR(uart)&(~DLAB)); - SSYNC(); -#endif + UART_CLEAR_DLAB(uart); chr = UART_GET_CHAR(uart); SSYNC(); @@ -764,26 +758,15 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios, UART_PUT_IER(uart, 0); #endif -#ifndef CONFIG_BF54x /* Set DLAB in LCR to Access DLL and DLH */ - val = UART_GET_LCR(uart); - val |= DLAB; - UART_PUT_LCR(uart, val); - SSYNC(); -#endif + UART_SET_DLAB(uart); UART_PUT_DLL(uart, quot & 0xFF); - SSYNC(); UART_PUT_DLH(uart, (quot >> 8) & 0xFF); SSYNC(); -#ifndef CONFIG_BF54x /* Clear DLAB in LCR to Access THR RBR IER */ - val = UART_GET_LCR(uart); - val &= ~DLAB; - UART_PUT_LCR(uart, val); - SSYNC(); -#endif + UART_CLEAR_DLAB(uart); UART_PUT_LCR(uart, lcr); @@ -946,8 +929,7 @@ bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud, status = UART_GET_IER(uart) & (ERBFI | ETBEI); if (status == (ERBFI | ETBEI)) { /* ok, the port was enabled */ - unsigned short lcr, val; - unsigned short dlh, dll; + u16 lcr, dlh, dll; lcr = UART_GET_LCR(uart); @@ -964,22 +946,14 @@ bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud, case 2: *bits = 7; break; case 3: *bits = 8; break; } -#ifndef CONFIG_BF54x /* Set DLAB in LCR to Access DLL and DLH */ - val = UART_GET_LCR(uart); - val |= DLAB; - UART_PUT_LCR(uart, val); -#endif + UART_SET_DLAB(uart); dll = UART_GET_DLL(uart); dlh = UART_GET_DLH(uart); -#ifndef CONFIG_BF54x /* Clear DLAB in LCR to Access THR RBR IER */ - val = UART_GET_LCR(uart); - val &= ~DLAB; - UART_PUT_LCR(uart, val); -#endif + UART_CLEAR_DLAB(uart); *baud = get_sclk() / (16*(dll | dlh << 8)); } diff --git a/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h index 1bbfc2d75bde..26e3c8076b4e 100644 --- a/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h +++ b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h @@ -50,6 +50,9 @@ #define UART_PUT_LCR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_LCR), v) #define UART_PUT_GCTL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_GCTL), v) +#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0) +#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0) + #if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS) # define CONFIG_SERIAL_BFIN_CTSRTS diff --git a/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h index d22f052d6c80..d016603b6615 100644 --- a/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h +++ b/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h @@ -50,6 +50,9 @@ #define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v) #define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v) +#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0) +#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0) + #ifdef CONFIG_BFIN_UART0_CTSRTS # define CONFIG_SERIAL_BFIN_CTSRTS # ifndef CONFIG_UART0_CTS_PIN diff --git a/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h index ae2362c0bf97..f79d1a0e9129 100644 --- a/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h +++ b/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h @@ -50,6 +50,9 @@ #define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v) #define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v) +#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0) +#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0) + #if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS) # define CONFIG_SERIAL_BFIN_CTSRTS diff --git a/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h index 6547027cd3e6..5eb46a77d919 100644 --- a/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h +++ b/include/asm-blackfin/mach-bf548/bfin_serial_5xx.h @@ -54,6 +54,9 @@ #define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v) #define UART_PUT_MCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_MCR),v) +#define UART_SET_DLAB(uart) /* MMRs not muxed on BF54x */ +#define UART_CLEAR_DLAB(uart) /* MMRs not muxed on BF54x */ + #if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS) # define CONFIG_SERIAL_BFIN_CTSRTS diff --git a/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h index c209f0df47f7..7a9628769296 100644 --- a/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h +++ b/include/asm-blackfin/mach-bf561/bfin_serial_5xx.h @@ -50,6 +50,9 @@ #define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v) #define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v) +#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0) +#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0) + #ifdef CONFIG_BFIN_UART0_CTSRTS # define CONFIG_SERIAL_BFIN_CTSRTS # ifndef CONFIG_UART0_CTS_PIN -- cgit v1.2.3-58-ga151