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path: root/drivers/mfd
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Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/Kconfig3
-rw-r--r--drivers/mfd/wm831x-core.c437
-rw-r--r--drivers/mfd/wm831x-i2c.c76
-rw-r--r--drivers/mfd/wm831x-spi.c204
-rw-r--r--drivers/mfd/wm8400-core.c106
-rw-r--r--drivers/mfd/wm8994-core.c178
6 files changed, 507 insertions, 497 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 21574bdf485f..a67adcbd0fa1 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -404,6 +404,7 @@ config MFD_WM831X_I2C
bool "Support Wolfson Microelectronics WM831x/2x PMICs with I2C"
select MFD_CORE
select MFD_WM831X
+ select REGMAP_I2C
depends on I2C=y && GENERIC_HARDIRQS
help
Support for the Wolfson Microelecronics WM831x and WM832x PMICs
@@ -415,6 +416,7 @@ config MFD_WM831X_SPI
bool "Support Wolfson Microelectronics WM831x/2x PMICs with SPI"
select MFD_CORE
select MFD_WM831X
+ select REGMAP_SPI
depends on SPI_MASTER && GENERIC_HARDIRQS
help
Support for the Wolfson Microelecronics WM831x and WM832x PMICs
@@ -488,6 +490,7 @@ config MFD_WM8350_I2C
config MFD_WM8994
bool "Support Wolfson Microelectronics WM8994"
select MFD_CORE
+ select REGMAP_I2C
depends on I2C=y && GENERIC_HARDIRQS
help
The WM8994 is a highly integrated hi-fi CODEC designed for
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 282e76ab678f..0a2b8d41a702 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -18,12 +18,14 @@
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/slab.h>
+#include <linux/err.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
#include <linux/mfd/wm831x/irq.h>
#include <linux/mfd/wm831x/auxadc.h>
#include <linux/mfd/wm831x/otp.h>
+#include <linux/mfd/wm831x/pmu.h>
#include <linux/mfd/wm831x/regulator.h>
/* Current settings - values are 2*2^(reg_val/4) microamps. These are
@@ -160,27 +162,350 @@ int wm831x_reg_unlock(struct wm831x *wm831x)
}
EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
-static int wm831x_read(struct wm831x *wm831x, unsigned short reg,
- int bytes, void *dest)
+static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
{
- int ret, i;
- u16 *buf = dest;
-
- BUG_ON(bytes % 2);
- BUG_ON(bytes <= 0);
+ switch (reg) {
+ case WM831X_RESET_ID:
+ case WM831X_REVISION:
+ case WM831X_PARENT_ID:
+ case WM831X_SYSVDD_CONTROL:
+ case WM831X_THERMAL_MONITORING:
+ case WM831X_POWER_STATE:
+ case WM831X_WATCHDOG:
+ case WM831X_ON_PIN_CONTROL:
+ case WM831X_RESET_CONTROL:
+ case WM831X_CONTROL_INTERFACE:
+ case WM831X_SECURITY_KEY:
+ case WM831X_SOFTWARE_SCRATCH:
+ case WM831X_OTP_CONTROL:
+ case WM831X_GPIO_LEVEL:
+ case WM831X_SYSTEM_STATUS:
+ case WM831X_ON_SOURCE:
+ case WM831X_OFF_SOURCE:
+ case WM831X_SYSTEM_INTERRUPTS:
+ case WM831X_INTERRUPT_STATUS_1:
+ case WM831X_INTERRUPT_STATUS_2:
+ case WM831X_INTERRUPT_STATUS_3:
+ case WM831X_INTERRUPT_STATUS_4:
+ case WM831X_INTERRUPT_STATUS_5:
+ case WM831X_IRQ_CONFIG:
+ case WM831X_SYSTEM_INTERRUPTS_MASK:
+ case WM831X_INTERRUPT_STATUS_1_MASK:
+ case WM831X_INTERRUPT_STATUS_2_MASK:
+ case WM831X_INTERRUPT_STATUS_3_MASK:
+ case WM831X_INTERRUPT_STATUS_4_MASK:
+ case WM831X_INTERRUPT_STATUS_5_MASK:
+ case WM831X_RTC_WRITE_COUNTER:
+ case WM831X_RTC_TIME_1:
+ case WM831X_RTC_TIME_2:
+ case WM831X_RTC_ALARM_1:
+ case WM831X_RTC_ALARM_2:
+ case WM831X_RTC_CONTROL:
+ case WM831X_RTC_TRIM:
+ case WM831X_TOUCH_CONTROL_1:
+ case WM831X_TOUCH_CONTROL_2:
+ case WM831X_TOUCH_DATA_X:
+ case WM831X_TOUCH_DATA_Y:
+ case WM831X_TOUCH_DATA_Z:
+ case WM831X_AUXADC_DATA:
+ case WM831X_AUXADC_CONTROL:
+ case WM831X_AUXADC_SOURCE:
+ case WM831X_COMPARATOR_CONTROL:
+ case WM831X_COMPARATOR_1:
+ case WM831X_COMPARATOR_2:
+ case WM831X_COMPARATOR_3:
+ case WM831X_COMPARATOR_4:
+ case WM831X_GPIO1_CONTROL:
+ case WM831X_GPIO2_CONTROL:
+ case WM831X_GPIO3_CONTROL:
+ case WM831X_GPIO4_CONTROL:
+ case WM831X_GPIO5_CONTROL:
+ case WM831X_GPIO6_CONTROL:
+ case WM831X_GPIO7_CONTROL:
+ case WM831X_GPIO8_CONTROL:
+ case WM831X_GPIO9_CONTROL:
+ case WM831X_GPIO10_CONTROL:
+ case WM831X_GPIO11_CONTROL:
+ case WM831X_GPIO12_CONTROL:
+ case WM831X_GPIO13_CONTROL:
+ case WM831X_GPIO14_CONTROL:
+ case WM831X_GPIO15_CONTROL:
+ case WM831X_GPIO16_CONTROL:
+ case WM831X_CHARGER_CONTROL_1:
+ case WM831X_CHARGER_CONTROL_2:
+ case WM831X_CHARGER_STATUS:
+ case WM831X_BACKUP_CHARGER_CONTROL:
+ case WM831X_STATUS_LED_1:
+ case WM831X_STATUS_LED_2:
+ case WM831X_CURRENT_SINK_1:
+ case WM831X_CURRENT_SINK_2:
+ case WM831X_DCDC_ENABLE:
+ case WM831X_LDO_ENABLE:
+ case WM831X_DCDC_STATUS:
+ case WM831X_LDO_STATUS:
+ case WM831X_DCDC_UV_STATUS:
+ case WM831X_LDO_UV_STATUS:
+ case WM831X_DC1_CONTROL_1:
+ case WM831X_DC1_CONTROL_2:
+ case WM831X_DC1_ON_CONFIG:
+ case WM831X_DC1_SLEEP_CONTROL:
+ case WM831X_DC1_DVS_CONTROL:
+ case WM831X_DC2_CONTROL_1:
+ case WM831X_DC2_CONTROL_2:
+ case WM831X_DC2_ON_CONFIG:
+ case WM831X_DC2_SLEEP_CONTROL:
+ case WM831X_DC2_DVS_CONTROL:
+ case WM831X_DC3_CONTROL_1:
+ case WM831X_DC3_CONTROL_2:
+ case WM831X_DC3_ON_CONFIG:
+ case WM831X_DC3_SLEEP_CONTROL:
+ case WM831X_DC4_CONTROL:
+ case WM831X_DC4_SLEEP_CONTROL:
+ case WM831X_EPE1_CONTROL:
+ case WM831X_EPE2_CONTROL:
+ case WM831X_LDO1_CONTROL:
+ case WM831X_LDO1_ON_CONTROL:
+ case WM831X_LDO1_SLEEP_CONTROL:
+ case WM831X_LDO2_CONTROL:
+ case WM831X_LDO2_ON_CONTROL:
+ case WM831X_LDO2_SLEEP_CONTROL:
+ case WM831X_LDO3_CONTROL:
+ case WM831X_LDO3_ON_CONTROL:
+ case WM831X_LDO3_SLEEP_CONTROL:
+ case WM831X_LDO4_CONTROL:
+ case WM831X_LDO4_ON_CONTROL:
+ case WM831X_LDO4_SLEEP_CONTROL:
+ case WM831X_LDO5_CONTROL:
+ case WM831X_LDO5_ON_CONTROL:
+ case WM831X_LDO5_SLEEP_CONTROL:
+ case WM831X_LDO6_CONTROL:
+ case WM831X_LDO6_ON_CONTROL:
+ case WM831X_LDO6_SLEEP_CONTROL:
+ case WM831X_LDO7_CONTROL:
+ case WM831X_LDO7_ON_CONTROL:
+ case WM831X_LDO7_SLEEP_CONTROL:
+ case WM831X_LDO8_CONTROL:
+ case WM831X_LDO8_ON_CONTROL:
+ case WM831X_LDO8_SLEEP_CONTROL:
+ case WM831X_LDO9_CONTROL:
+ case WM831X_LDO9_ON_CONTROL:
+ case WM831X_LDO9_SLEEP_CONTROL:
+ case WM831X_LDO10_CONTROL:
+ case WM831X_LDO10_ON_CONTROL:
+ case WM831X_LDO10_SLEEP_CONTROL:
+ case WM831X_LDO11_ON_CONTROL:
+ case WM831X_LDO11_SLEEP_CONTROL:
+ case WM831X_POWER_GOOD_SOURCE_1:
+ case WM831X_POWER_GOOD_SOURCE_2:
+ case WM831X_CLOCK_CONTROL_1:
+ case WM831X_CLOCK_CONTROL_2:
+ case WM831X_FLL_CONTROL_1:
+ case WM831X_FLL_CONTROL_2:
+ case WM831X_FLL_CONTROL_3:
+ case WM831X_FLL_CONTROL_4:
+ case WM831X_FLL_CONTROL_5:
+ case WM831X_UNIQUE_ID_1:
+ case WM831X_UNIQUE_ID_2:
+ case WM831X_UNIQUE_ID_3:
+ case WM831X_UNIQUE_ID_4:
+ case WM831X_UNIQUE_ID_5:
+ case WM831X_UNIQUE_ID_6:
+ case WM831X_UNIQUE_ID_7:
+ case WM831X_UNIQUE_ID_8:
+ case WM831X_FACTORY_OTP_ID:
+ case WM831X_FACTORY_OTP_1:
+ case WM831X_FACTORY_OTP_2:
+ case WM831X_FACTORY_OTP_3:
+ case WM831X_FACTORY_OTP_4:
+ case WM831X_FACTORY_OTP_5:
+ case WM831X_CUSTOMER_OTP_ID:
+ case WM831X_DC1_OTP_CONTROL:
+ case WM831X_DC2_OTP_CONTROL:
+ case WM831X_DC3_OTP_CONTROL:
+ case WM831X_LDO1_2_OTP_CONTROL:
+ case WM831X_LDO3_4_OTP_CONTROL:
+ case WM831X_LDO5_6_OTP_CONTROL:
+ case WM831X_LDO7_8_OTP_CONTROL:
+ case WM831X_LDO9_10_OTP_CONTROL:
+ case WM831X_LDO11_EPE_CONTROL:
+ case WM831X_GPIO1_OTP_CONTROL:
+ case WM831X_GPIO2_OTP_CONTROL:
+ case WM831X_GPIO3_OTP_CONTROL:
+ case WM831X_GPIO4_OTP_CONTROL:
+ case WM831X_GPIO5_OTP_CONTROL:
+ case WM831X_GPIO6_OTP_CONTROL:
+ case WM831X_DBE_CHECK_DATA:
+ return true;
+ default:
+ return false;
+ }
+}
- ret = wm831x->read_dev(wm831x, reg, bytes, dest);
- if (ret < 0)
- return ret;
+static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
+{
+ struct wm831x *wm831x = dev_get_drvdata(dev);
- for (i = 0; i < bytes / 2; i++) {
- buf[i] = be16_to_cpu(buf[i]);
+ if (wm831x_reg_locked(wm831x, reg))
+ return false;
- dev_vdbg(wm831x->dev, "Read %04x from R%d(0x%x)\n",
- buf[i], reg + i, reg + i);
+ switch (reg) {
+ case WM831X_SYSVDD_CONTROL:
+ case WM831X_THERMAL_MONITORING:
+ case WM831X_POWER_STATE:
+ case WM831X_WATCHDOG:
+ case WM831X_ON_PIN_CONTROL:
+ case WM831X_RESET_CONTROL:
+ case WM831X_CONTROL_INTERFACE:
+ case WM831X_SECURITY_KEY:
+ case WM831X_SOFTWARE_SCRATCH:
+ case WM831X_OTP_CONTROL:
+ case WM831X_GPIO_LEVEL:
+ case WM831X_INTERRUPT_STATUS_1:
+ case WM831X_INTERRUPT_STATUS_2:
+ case WM831X_INTERRUPT_STATUS_3:
+ case WM831X_INTERRUPT_STATUS_4:
+ case WM831X_INTERRUPT_STATUS_5:
+ case WM831X_IRQ_CONFIG:
+ case WM831X_SYSTEM_INTERRUPTS_MASK:
+ case WM831X_INTERRUPT_STATUS_1_MASK:
+ case WM831X_INTERRUPT_STATUS_2_MASK:
+ case WM831X_INTERRUPT_STATUS_3_MASK:
+ case WM831X_INTERRUPT_STATUS_4_MASK:
+ case WM831X_INTERRUPT_STATUS_5_MASK:
+ case WM831X_RTC_TIME_1:
+ case WM831X_RTC_TIME_2:
+ case WM831X_RTC_ALARM_1:
+ case WM831X_RTC_ALARM_2:
+ case WM831X_RTC_CONTROL:
+ case WM831X_RTC_TRIM:
+ case WM831X_TOUCH_CONTROL_1:
+ case WM831X_TOUCH_CONTROL_2:
+ case WM831X_AUXADC_CONTROL:
+ case WM831X_AUXADC_SOURCE:
+ case WM831X_COMPARATOR_CONTROL:
+ case WM831X_COMPARATOR_1:
+ case WM831X_COMPARATOR_2:
+ case WM831X_COMPARATOR_3:
+ case WM831X_COMPARATOR_4:
+ case WM831X_GPIO1_CONTROL:
+ case WM831X_GPIO2_CONTROL:
+ case WM831X_GPIO3_CONTROL:
+ case WM831X_GPIO4_CONTROL:
+ case WM831X_GPIO5_CONTROL:
+ case WM831X_GPIO6_CONTROL:
+ case WM831X_GPIO7_CONTROL:
+ case WM831X_GPIO8_CONTROL:
+ case WM831X_GPIO9_CONTROL:
+ case WM831X_GPIO10_CONTROL:
+ case WM831X_GPIO11_CONTROL:
+ case WM831X_GPIO12_CONTROL:
+ case WM831X_GPIO13_CONTROL:
+ case WM831X_GPIO14_CONTROL:
+ case WM831X_GPIO15_CONTROL:
+ case WM831X_GPIO16_CONTROL:
+ case WM831X_CHARGER_CONTROL_1:
+ case WM831X_CHARGER_CONTROL_2:
+ case WM831X_CHARGER_STATUS:
+ case WM831X_BACKUP_CHARGER_CONTROL:
+ case WM831X_STATUS_LED_1:
+ case WM831X_STATUS_LED_2:
+ case WM831X_CURRENT_SINK_1:
+ case WM831X_CURRENT_SINK_2:
+ case WM831X_DCDC_ENABLE:
+ case WM831X_LDO_ENABLE:
+ case WM831X_DC1_CONTROL_1:
+ case WM831X_DC1_CONTROL_2:
+ case WM831X_DC1_ON_CONFIG:
+ case WM831X_DC1_SLEEP_CONTROL:
+ case WM831X_DC1_DVS_CONTROL:
+ case WM831X_DC2_CONTROL_1:
+ case WM831X_DC2_CONTROL_2:
+ case WM831X_DC2_ON_CONFIG:
+ case WM831X_DC2_SLEEP_CONTROL:
+ case WM831X_DC2_DVS_CONTROL:
+ case WM831X_DC3_CONTROL_1:
+ case WM831X_DC3_CONTROL_2:
+ case WM831X_DC3_ON_CONFIG:
+ case WM831X_DC3_SLEEP_CONTROL:
+ case WM831X_DC4_CONTROL:
+ case WM831X_DC4_SLEEP_CONTROL:
+ case WM831X_EPE1_CONTROL:
+ case WM831X_EPE2_CONTROL:
+ case WM831X_LDO1_CONTROL:
+ case WM831X_LDO1_ON_CONTROL:
+ case WM831X_LDO1_SLEEP_CONTROL:
+ case WM831X_LDO2_CONTROL:
+ case WM831X_LDO2_ON_CONTROL:
+ case WM831X_LDO2_SLEEP_CONTROL:
+ case WM831X_LDO3_CONTROL:
+ case WM831X_LDO3_ON_CONTROL:
+ case WM831X_LDO3_SLEEP_CONTROL:
+ case WM831X_LDO4_CONTROL:
+ case WM831X_LDO4_ON_CONTROL:
+ case WM831X_LDO4_SLEEP_CONTROL:
+ case WM831X_LDO5_CONTROL:
+ case WM831X_LDO5_ON_CONTROL:
+ case WM831X_LDO5_SLEEP_CONTROL:
+ case WM831X_LDO6_CONTROL:
+ case WM831X_LDO6_ON_CONTROL:
+ case WM831X_LDO6_SLEEP_CONTROL:
+ case WM831X_LDO7_CONTROL:
+ case WM831X_LDO7_ON_CONTROL:
+ case WM831X_LDO7_SLEEP_CONTROL:
+ case WM831X_LDO8_CONTROL:
+ case WM831X_LDO8_ON_CONTROL:
+ case WM831X_LDO8_SLEEP_CONTROL:
+ case WM831X_LDO9_CONTROL:
+ case WM831X_LDO9_ON_CONTROL:
+ case WM831X_LDO9_SLEEP_CONTROL:
+ case WM831X_LDO10_CONTROL:
+ case WM831X_LDO10_ON_CONTROL:
+ case WM831X_LDO10_SLEEP_CONTROL:
+ case WM831X_LDO11_ON_CONTROL:
+ case WM831X_LDO11_SLEEP_CONTROL:
+ case WM831X_POWER_GOOD_SOURCE_1:
+ case WM831X_POWER_GOOD_SOURCE_2:
+ case WM831X_CLOCK_CONTROL_1:
+ case WM831X_CLOCK_CONTROL_2:
+ case WM831X_FLL_CONTROL_1:
+ case WM831X_FLL_CONTROL_2:
+ case WM831X_FLL_CONTROL_3:
+ case WM831X_FLL_CONTROL_4:
+ case WM831X_FLL_CONTROL_5:
+ return true;
+ default:
+ return false;
}
+}
- return 0;
+static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case WM831X_SYSTEM_STATUS:
+ case WM831X_ON_SOURCE:
+ case WM831X_OFF_SOURCE:
+ case WM831X_GPIO_LEVEL:
+ case WM831X_SYSTEM_INTERRUPTS:
+ case WM831X_INTERRUPT_STATUS_1:
+ case WM831X_INTERRUPT_STATUS_2:
+ case WM831X_INTERRUPT_STATUS_3:
+ case WM831X_INTERRUPT_STATUS_4:
+ case WM831X_INTERRUPT_STATUS_5:
+ case WM831X_RTC_TIME_1:
+ case WM831X_RTC_TIME_2:
+ case WM831X_TOUCH_DATA_X:
+ case WM831X_TOUCH_DATA_Y:
+ case WM831X_TOUCH_DATA_Z:
+ case WM831X_AUXADC_DATA:
+ case WM831X_CHARGER_STATUS:
+ case WM831X_DCDC_STATUS:
+ case WM831X_LDO_STATUS:
+ case WM831X_DCDC_UV_STATUS:
+ case WM831X_LDO_UV_STATUS:
+ return true;
+ default:
+ return false;
+ }
}
/**
@@ -191,14 +516,10 @@ static int wm831x_read(struct wm831x *wm831x, unsigned short reg,
*/
int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
{
- unsigned short val;
+ unsigned int val;
int ret;
- mutex_lock(&wm831x->io_lock);
-
- ret = wm831x_read(wm831x, reg, 2, &val);
-
- mutex_unlock(&wm831x->io_lock);
+ ret = regmap_read(wm831x->regmap, reg, &val);
if (ret < 0)
return ret;
@@ -218,15 +539,7 @@ EXPORT_SYMBOL_GPL(wm831x_reg_read);
int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
int count, u16 *buf)
{
- int ret;
-
- mutex_lock(&wm831x->io_lock);
-
- ret = wm831x_read(wm831x, reg, count * 2, buf);
-
- mutex_unlock(&wm831x->io_lock);
-
- return ret;
+ return regmap_bulk_read(wm831x->regmap, reg, buf, count);
}
EXPORT_SYMBOL_GPL(wm831x_bulk_read);
@@ -234,7 +547,7 @@ static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
int bytes, void *src)
{
u16 *buf = src;
- int i;
+ int i, ret;
BUG_ON(bytes % 2);
BUG_ON(bytes <= 0);
@@ -245,11 +558,10 @@ static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
buf[i], reg + i, reg + i);
-
- buf[i] = cpu_to_be16(buf[i]);
+ ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
}
- return wm831x->write_dev(wm831x, reg, bytes, src);
+ return 0;
}
/**
@@ -286,20 +598,14 @@ int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
unsigned short mask, unsigned short val)
{
int ret;
- u16 r;
mutex_lock(&wm831x->io_lock);
- ret = wm831x_read(wm831x, reg, 2, &r);
- if (ret < 0)
- goto out;
-
- r &= ~mask;
- r |= val & mask;
-
- ret = wm831x_write(wm831x, reg, 2, &r);
+ if (!wm831x_reg_locked(wm831x, reg))
+ ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
+ else
+ ret = -EPERM;
-out:
mutex_unlock(&wm831x->io_lock);
return ret;
@@ -1292,6 +1598,19 @@ static struct mfd_cell backlight_devs[] = {
},
};
+struct regmap_config wm831x_regmap_config = {
+ .reg_bits = 16,
+ .val_bits = 16,
+
+ .cache_type = REGCACHE_RBTREE,
+
+ .max_register = WM831X_DBE_CHECK_DATA,
+ .readable_reg = wm831x_reg_readable,
+ .writeable_reg = wm831x_reg_writeable,
+ .volatile_reg = wm831x_reg_volatile,
+};
+EXPORT_SYMBOL_GPL(wm831x_regmap_config);
+
/*
* Instantiate the generic non-control parts of the device.
*/
@@ -1305,11 +1624,12 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
mutex_init(&wm831x->io_lock);
mutex_init(&wm831x->key_lock);
dev_set_drvdata(wm831x->dev, wm831x);
+ wm831x->soft_shutdown = pdata->soft_shutdown;
ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
- goto err;
+ goto err_regmap;
}
switch (ret) {
case 0x6204:
@@ -1318,20 +1638,20 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
default:
dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
ret = -EINVAL;
- goto err;
+ goto err_regmap;
}
ret = wm831x_reg_read(wm831x, WM831X_REVISION);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
- goto err;
+ goto err_regmap;
}
rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
- goto err;
+ goto err_regmap;
}
/* Some engineering samples do not have the ID set, rely on
@@ -1406,7 +1726,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
default:
dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
ret = -EINVAL;
- goto err;
+ goto err_regmap;
}
/* This will need revisiting in future but is OK for all
@@ -1420,7 +1740,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
- goto err;
+ goto err_regmap;
}
if (ret != 0) {
dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
@@ -1433,7 +1753,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = pdata->pre_init(wm831x);
if (ret != 0) {
dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
- goto err;
+ goto err_regmap;
}
}
@@ -1456,7 +1776,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = wm831x_irq_init(wm831x, irq);
if (ret != 0)
- goto err;
+ goto err_regmap;
wm831x_auxadc_init(wm831x);
@@ -1552,8 +1872,9 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
err_irq:
wm831x_irq_exit(wm831x);
-err:
+err_regmap:
mfd_remove_devices(wm831x->dev);
+ regmap_exit(wm831x->regmap);
kfree(wm831x);
return ret;
}
@@ -1565,6 +1886,7 @@ void wm831x_device_exit(struct wm831x *wm831x)
if (wm831x->irq_base)
free_irq(wm831x->irq_base + WM831X_IRQ_AUXADC_DATA, wm831x);
wm831x_irq_exit(wm831x);
+ regmap_exit(wm831x->regmap);
kfree(wm831x);
}
@@ -1604,6 +1926,15 @@ int wm831x_device_suspend(struct wm831x *wm831x)
return 0;
}
+void wm831x_device_shutdown(struct wm831x *wm831x)
+{
+ if (wm831x->soft_shutdown) {
+ dev_info(wm831x->dev, "Initiating shutdown...\n");
+ wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
+ }
+}
+EXPORT_SYMBOL_GPL(wm831x_device_shutdown);
+
MODULE_DESCRIPTION("Core support for the WM831X AudioPlus PMIC");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Brown");
diff --git a/drivers/mfd/wm831x-i2c.c b/drivers/mfd/wm831x-i2c.c
index a06cbc739716..ac8da1d439da 100644
--- a/drivers/mfd/wm831x-i2c.c
+++ b/drivers/mfd/wm831x-i2c.c
@@ -18,67 +18,17 @@
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/regmap.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
-static int wm831x_i2c_read_device(struct wm831x *wm831x, unsigned short reg,
- int bytes, void *dest)
-{
- struct i2c_client *i2c = wm831x->control_data;
- int ret;
- u16 r = cpu_to_be16(reg);
-
- ret = i2c_master_send(i2c, (unsigned char *)&r, 2);
- if (ret < 0)
- return ret;
- if (ret != 2)
- return -EIO;
-
- ret = i2c_master_recv(i2c, dest, bytes);
- if (ret < 0)
- return ret;
- if (ret != bytes)
- return -EIO;
- return 0;
-}
-
-/* Currently we allocate the write buffer on the stack; this is OK for
- * small writes - if we need to do large writes this will need to be
- * revised.
- */
-static int wm831x_i2c_write_device(struct wm831x *wm831x, unsigned short reg,
- int bytes, void *src)
-{
- struct i2c_client *i2c = wm831x->control_data;
- struct i2c_msg xfer[2];
- int ret;
-
- reg = cpu_to_be16(reg);
-
- xfer[0].addr = i2c->addr;
- xfer[0].flags = 0;
- xfer[0].len = 2;
- xfer[0].buf = (char *)&reg;
-
- xfer[1].addr = i2c->addr;
- xfer[1].flags = I2C_M_NOSTART;
- xfer[1].len = bytes;
- xfer[1].buf = (char *)src;
-
- ret = i2c_transfer(i2c->adapter, xfer, 2);
- if (ret < 0)
- return ret;
- if (ret != 2)
- return -EIO;
-
- return 0;
-}
-
static int wm831x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm831x *wm831x;
+ int ret;
wm831x = kzalloc(sizeof(struct wm831x), GFP_KERNEL);
if (wm831x == NULL)
@@ -86,9 +36,15 @@ static int wm831x_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, wm831x);
wm831x->dev = &i2c->dev;
- wm831x->control_data = i2c;
- wm831x->read_dev = wm831x_i2c_read_device;
- wm831x->write_dev = wm831x_i2c_write_device;
+
+ wm831x->regmap = regmap_init_i2c(i2c, &wm831x_regmap_config);
+ if (IS_ERR(wm831x->regmap)) {
+ ret = PTR_ERR(wm831x->regmap);
+ dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
+ ret);
+ kfree(wm831x);
+ return ret;
+ }
return wm831x_device_init(wm831x, id->driver_data, i2c->irq);
}
@@ -109,6 +65,13 @@ static int wm831x_i2c_suspend(struct device *dev)
return wm831x_device_suspend(wm831x);
}
+static void wm831x_i2c_shutdown(struct i2c_client *i2c)
+{
+ struct wm831x *wm831x = i2c_get_clientdata(i2c);
+
+ wm831x_device_shutdown(wm831x);
+}
+
static const struct i2c_device_id wm831x_i2c_id[] = {
{ "wm8310", WM8310 },
{ "wm8311", WM8311 },
@@ -133,6 +96,7 @@ static struct i2c_driver wm831x_i2c_driver = {
},
.probe = wm831x_i2c_probe,
.remove = wm831x_i2c_remove,
+ .shutdown = wm831x_i2c_shutdown,
.id_table = wm831x_i2c_id,
};
diff --git a/drivers/mfd/wm831x-spi.c b/drivers/mfd/wm831x-spi.c
index eed8e4f7a5a1..8d6a9a969dbc 100644
--- a/drivers/mfd/wm831x-spi.c
+++ b/drivers/mfd/wm831x-spi.c
@@ -16,78 +16,19 @@
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/spi/spi.h>
+#include <linux/regmap.h>
+#include <linux/err.h>
#include <linux/mfd/wm831x/core.h>
-static int wm831x_spi_read_device(struct wm831x *wm831x, unsigned short reg,
- int bytes, void *dest)
-{
- u16 tx_val;
- u16 *d = dest;
- int r, ret;
-
- /* Go register at a time */
- for (r = reg; r < reg + (bytes / 2); r++) {
- tx_val = r | 0x8000;
-
- ret = spi_write_then_read(wm831x->control_data,
- (u8 *)&tx_val, 2, (u8 *)d, 2);
- if (ret != 0)
- return ret;
-
- *d = be16_to_cpu(*d);
-
- d++;
- }
-
- return 0;
-}
-
-static int wm831x_spi_write_device(struct wm831x *wm831x, unsigned short reg,
- int bytes, void *src)
-{
- struct spi_device *spi = wm831x->control_data;
- u16 *s = src;
- u16 data[2];
- int ret, r;
-
- /* Go register at a time */
- for (r = reg; r < reg + (bytes / 2); r++) {
- data[0] = r;
- data[1] = *s++;
-
- ret = spi_write(spi, (char *)&data, sizeof(data));
- if (ret != 0)
- return ret;
- }
-
- return 0;
-}
-
static int __devinit wm831x_spi_probe(struct spi_device *spi)
{
+ const struct spi_device_id *id = spi_get_device_id(spi);
struct wm831x *wm831x;
enum wm831x_parent type;
+ int ret;
- /* Currently SPI support for ID tables is unmerged, we're faking it */
- if (strcmp(spi->modalias, "wm8310") == 0)
- type = WM8310;
- else if (strcmp(spi->modalias, "wm8311") == 0)
- type = WM8311;
- else if (strcmp(spi->modalias, "wm8312") == 0)
- type = WM8312;
- else if (strcmp(spi->modalias, "wm8320") == 0)
- type = WM8320;
- else if (strcmp(spi->modalias, "wm8321") == 0)
- type = WM8321;
- else if (strcmp(spi->modalias, "wm8325") == 0)
- type = WM8325;
- else if (strcmp(spi->modalias, "wm8326") == 0)
- type = WM8326;
- else {
- dev_err(&spi->dev, "Unknown device type\n");
- return -EINVAL;
- }
+ type = (enum wm831x_parent)id->driver_data;
wm831x = kzalloc(sizeof(struct wm831x), GFP_KERNEL);
if (wm831x == NULL)
@@ -98,9 +39,15 @@ static int __devinit wm831x_spi_probe(struct spi_device *spi)
dev_set_drvdata(&spi->dev, wm831x);
wm831x->dev = &spi->dev;
- wm831x->control_data = spi;
- wm831x->read_dev = wm831x_spi_read_device;
- wm831x->write_dev = wm831x_spi_write_device;
+
+ wm831x->regmap = regmap_init_spi(spi, &wm831x_regmap_config);
+ if (IS_ERR(wm831x->regmap)) {
+ ret = PTR_ERR(wm831x->regmap);
+ dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
+ ret);
+ kfree(wm831x);
+ return ret;
+ }
return wm831x_device_init(wm831x, type, spi->irq);
}
@@ -121,119 +68,50 @@ static int wm831x_spi_suspend(struct device *dev)
return wm831x_device_suspend(wm831x);
}
+static void wm831x_spi_shutdown(struct spi_device *spi)
+{
+ struct wm831x *wm831x = dev_get_drvdata(&spi->dev);
+
+ wm831x_device_shutdown(wm831x);
+}
+
static const struct dev_pm_ops wm831x_spi_pm = {
.freeze = wm831x_spi_suspend,
.suspend = wm831x_spi_suspend,
};
-static struct spi_driver wm8310_spi_driver = {
- .driver = {
- .name = "wm8310",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- .pm = &wm831x_spi_pm,
- },
- .probe = wm831x_spi_probe,
- .remove = __devexit_p(wm831x_spi_remove),
+static const struct spi_device_id wm831x_spi_ids[] = {
+ { "wm8310", WM8310 },
+ { "wm8311", WM8311 },
+ { "wm8312", WM8312 },
+ { "wm8320", WM8320 },
+ { "wm8321", WM8321 },
+ { "wm8325", WM8325 },
+ { "wm8326", WM8326 },
+ { },
};
+MODULE_DEVICE_TABLE(spi, wm831x_spi_id);
-static struct spi_driver wm8311_spi_driver = {
+static struct spi_driver wm831x_spi_driver = {
.driver = {
- .name = "wm8311",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- .pm = &wm831x_spi_pm,
- },
- .probe = wm831x_spi_probe,
- .remove = __devexit_p(wm831x_spi_remove),
-};
-
-static struct spi_driver wm8312_spi_driver = {
- .driver = {
- .name = "wm8312",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- .pm = &wm831x_spi_pm,
- },
- .probe = wm831x_spi_probe,
- .remove = __devexit_p(wm831x_spi_remove),
-};
-
-static struct spi_driver wm8320_spi_driver = {
- .driver = {
- .name = "wm8320",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- .pm = &wm831x_spi_pm,
- },
- .probe = wm831x_spi_probe,
- .remove = __devexit_p(wm831x_spi_remove),
-};
-
-static struct spi_driver wm8321_spi_driver = {
- .driver = {
- .name = "wm8321",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- .pm = &wm831x_spi_pm,
- },
- .probe = wm831x_spi_probe,
- .remove = __devexit_p(wm831x_spi_remove),
-};
-
-static struct spi_driver wm8325_spi_driver = {
- .driver = {
- .name = "wm8325",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- .pm = &wm831x_spi_pm,
- },
- .probe = wm831x_spi_probe,
- .remove = __devexit_p(wm831x_spi_remove),
-};
-
-static struct spi_driver wm8326_spi_driver = {
- .driver = {
- .name = "wm8326",
+ .name = "wm831x",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
.pm = &wm831x_spi_pm,
},
+ .id_table = wm831x_spi_ids,
.probe = wm831x_spi_probe,
.remove = __devexit_p(wm831x_spi_remove),
+ .shutdown = wm831x_spi_shutdown,
};
static int __init wm831x_spi_init(void)
{
int ret;
- ret = spi_register_driver(&wm8310_spi_driver);
- if (ret != 0)
- pr_err("Failed to register WM8310 SPI driver: %d\n", ret);
-
- ret = spi_register_driver(&wm8311_spi_driver);
- if (ret != 0)
- pr_err("Failed to register WM8311 SPI driver: %d\n", ret);
-
- ret = spi_register_driver(&wm8312_spi_driver);
- if (ret != 0)
- pr_err("Failed to register WM8312 SPI driver: %d\n", ret);
-
- ret = spi_register_driver(&wm8320_spi_driver);
- if (ret != 0)
- pr_err("Failed to register WM8320 SPI driver: %d\n", ret);
-
- ret = spi_register_driver(&wm8321_spi_driver);
- if (ret != 0)
- pr_err("Failed to register WM8321 SPI driver: %d\n", ret);
-
- ret = spi_register_driver(&wm8325_spi_driver);
- if (ret != 0)
- pr_err("Failed to register WM8325 SPI driver: %d\n", ret);
-
- ret = spi_register_driver(&wm8326_spi_driver);
+ ret = spi_register_driver(&wm831x_spi_driver);
if (ret != 0)
- pr_err("Failed to register WM8326 SPI driver: %d\n", ret);
+ pr_err("Failed to register WM831x SPI driver: %d\n", ret);
return 0;
}
@@ -241,13 +119,7 @@ subsys_initcall(wm831x_spi_init);
static void __exit wm831x_spi_exit(void)
{
- spi_unregister_driver(&wm8326_spi_driver);
- spi_unregister_driver(&wm8325_spi_driver);
- spi_unregister_driver(&wm8321_spi_driver);
- spi_unregister_driver(&wm8320_spi_driver);
- spi_unregister_driver(&wm8312_spi_driver);
- spi_unregister_driver(&wm8311_spi_driver);
- spi_unregister_driver(&wm8310_spi_driver);
+ spi_unregister_driver(&wm831x_spi_driver);
}
module_exit(wm831x_spi_exit);
diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
index 597f82edacaa..e06ba9440cdb 100644
--- a/drivers/mfd/wm8400-core.c
+++ b/drivers/mfd/wm8400-core.c
@@ -13,11 +13,13 @@
*/
#include <linux/bug.h>
+#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/mfd/core.h>
#include <linux/mfd/wm8400-private.h>
#include <linux/mfd/wm8400-audio.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
static struct {
@@ -123,14 +125,9 @@ static int wm8400_read(struct wm8400 *wm8400, u8 reg, int num_regs, u16 *dest)
/* If there are any volatile reads then read back the entire block */
for (i = reg; i < reg + num_regs; i++)
if (reg_data[i].vol) {
- ret = wm8400->read_dev(wm8400->io_data, reg,
- num_regs, dest);
- if (ret != 0)
- return ret;
- for (i = 0; i < num_regs; i++)
- dest[i] = be16_to_cpu(dest[i]);
-
- return 0;
+ ret = regmap_bulk_read(wm8400->regmap, reg, dest,
+ num_regs);
+ return ret;
}
/* Otherwise use the cache */
@@ -149,14 +146,11 @@ static int wm8400_write(struct wm8400 *wm8400, u8 reg, int num_regs,
for (i = 0; i < num_regs; i++) {
BUG_ON(!reg_data[reg + i].writable);
wm8400->reg_cache[reg + i] = src[i];
- src[i] = cpu_to_be16(src[i]);
+ ret = regmap_write(wm8400->regmap, reg, src[i]);
+ if (ret != 0)
+ return ret;
}
- /* Do the actual I/O */
- ret = wm8400->write_dev(wm8400->io_data, reg, num_regs, src);
- if (ret != 0)
- return -EIO;
-
return 0;
}
@@ -270,14 +264,14 @@ static int wm8400_init(struct wm8400 *wm8400,
dev_set_drvdata(wm8400->dev, wm8400);
/* Check that this is actually a WM8400 */
- ret = wm8400->read_dev(wm8400->io_data, WM8400_RESET_ID, 1, &reg);
+ ret = regmap_read(wm8400->regmap, WM8400_RESET_ID, &i);
if (ret != 0) {
dev_err(wm8400->dev, "Chip ID register read failed\n");
return -EIO;
}
- if (be16_to_cpu(reg) != reg_data[WM8400_RESET_ID].default_val) {
+ if (i != reg_data[WM8400_RESET_ID].default_val) {
dev_err(wm8400->dev, "Device is not a WM8400, ID is %x\n",
- be16_to_cpu(reg));
+ reg);
return -ENODEV;
}
@@ -285,9 +279,8 @@ static int wm8400_init(struct wm8400 *wm8400,
* is a PMIC we can't reset it safely so initialise the register
* cache from the hardware.
*/
- ret = wm8400->read_dev(wm8400->io_data, 0,
- ARRAY_SIZE(wm8400->reg_cache),
- wm8400->reg_cache);
+ ret = regmap_raw_read(wm8400->regmap, 0, wm8400->reg_cache,
+ ARRAY_SIZE(wm8400->reg_cache));
if (ret != 0) {
dev_err(wm8400->dev, "Register cache read failed\n");
return -EIO;
@@ -337,60 +330,13 @@ static void wm8400_release(struct wm8400 *wm8400)
mfd_remove_devices(wm8400->dev);
}
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-static int wm8400_i2c_read(void *io_data, char reg, int count, u16 *dest)
-{
- struct i2c_client *i2c = io_data;
- struct i2c_msg xfer[2];
- int ret;
-
- /* Write register */
- xfer[0].addr = i2c->addr;
- xfer[0].flags = 0;
- xfer[0].len = 1;
- xfer[0].buf = &reg;
-
- /* Read data */
- xfer[1].addr = i2c->addr;
- xfer[1].flags = I2C_M_RD;
- xfer[1].len = count * sizeof(u16);
- xfer[1].buf = (u8 *)dest;
-
- ret = i2c_transfer(i2c->adapter, xfer, 2);
- if (ret == 2)
- ret = 0;
- else if (ret >= 0)
- ret = -EIO;
-
- return ret;
-}
-
-static int wm8400_i2c_write(void *io_data, char reg, int count, const u16 *src)
-{
- struct i2c_client *i2c = io_data;
- u8 *msg;
- int ret;
-
- /* We add 1 byte for device register - ideally I2C would gather. */
- msg = kmalloc((count * sizeof(u16)) + 1, GFP_KERNEL);
- if (msg == NULL)
- return -ENOMEM;
-
- msg[0] = reg;
- memcpy(&msg[1], src, count * sizeof(u16));
-
- ret = i2c_master_send(i2c, msg, (count * sizeof(u16)) + 1);
-
- if (ret == (count * 2) + 1)
- ret = 0;
- else if (ret >= 0)
- ret = -EIO;
-
- kfree(msg);
-
- return ret;
-}
+static const struct regmap_config wm8400_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ .max_register = WM8400_REGISTER_COUNT - 1,
+};
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static int wm8400_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
@@ -403,18 +349,23 @@ static int wm8400_i2c_probe(struct i2c_client *i2c,
goto err;
}
- wm8400->io_data = i2c;
- wm8400->read_dev = wm8400_i2c_read;
- wm8400->write_dev = wm8400_i2c_write;
+ wm8400->regmap = regmap_init_i2c(i2c, &wm8400_regmap_config);
+ if (IS_ERR(wm8400->regmap)) {
+ ret = PTR_ERR(wm8400->regmap);
+ goto struct_err;
+ }
+
wm8400->dev = &i2c->dev;
i2c_set_clientdata(i2c, wm8400);
ret = wm8400_init(wm8400, i2c->dev.platform_data);
if (ret != 0)
- goto struct_err;
+ goto map_err;
return 0;
+map_err:
+ regmap_exit(wm8400->regmap);
struct_err:
kfree(wm8400);
err:
@@ -426,6 +377,7 @@ static int wm8400_i2c_remove(struct i2c_client *i2c)
struct wm8400 *wm8400 = i2c_get_clientdata(i2c);
wm8400_release(wm8400);
+ regmap_exit(wm8400->regmap);
kfree(wm8400);
return 0;
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 96479c9b1728..bfde4e8ec638 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -16,9 +16,11 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
+#include <linux/err.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/machine.h>
@@ -29,22 +31,7 @@
static int wm8994_read(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *dest)
{
- int ret, i;
- u16 *buf = dest;
-
- BUG_ON(bytes % 2);
- BUG_ON(bytes <= 0);
-
- ret = wm8994->read_dev(wm8994, reg, bytes, dest);
- if (ret < 0)
- return ret;
-
- for (i = 0; i < bytes / 2; i++) {
- dev_vdbg(wm8994->dev, "Read %04x from R%d(0x%x)\n",
- be16_to_cpu(buf[i]), reg + i, reg + i);
- }
-
- return 0;
+ return regmap_raw_read(wm8994->regmap, reg, dest, bytes);
}
/**
@@ -55,19 +42,15 @@ static int wm8994_read(struct wm8994 *wm8994, unsigned short reg,
*/
int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
{
- unsigned short val;
+ unsigned int val;
int ret;
- mutex_lock(&wm8994->io_lock);
-
- ret = wm8994_read(wm8994, reg, 2, &val);
-
- mutex_unlock(&wm8994->io_lock);
+ ret = regmap_read(wm8994->regmap, reg, &val);
if (ret < 0)
return ret;
else
- return be16_to_cpu(val);
+ return val;
}
EXPORT_SYMBOL_GPL(wm8994_reg_read);
@@ -82,33 +65,13 @@ EXPORT_SYMBOL_GPL(wm8994_reg_read);
int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf)
{
- int ret;
-
- mutex_lock(&wm8994->io_lock);
-
- ret = wm8994_read(wm8994, reg, count * 2, buf);
-
- mutex_unlock(&wm8994->io_lock);
-
- return ret;
+ return regmap_bulk_read(wm8994->regmap, reg, buf, count);
}
-EXPORT_SYMBOL_GPL(wm8994_bulk_read);
static int wm8994_write(struct wm8994 *wm8994, unsigned short reg,
int bytes, const void *src)
{
- const u16 *buf = src;
- int i;
-
- BUG_ON(bytes % 2);
- BUG_ON(bytes <= 0);
-
- for (i = 0; i < bytes / 2; i++) {
- dev_vdbg(wm8994->dev, "Write %04x to R%d(0x%x)\n",
- be16_to_cpu(buf[i]), reg + i, reg + i);
- }
-
- return wm8994->write_dev(wm8994, reg, bytes, src);
+ return regmap_raw_write(wm8994->regmap, reg, src, bytes);
}
/**
@@ -121,17 +84,7 @@ static int wm8994_write(struct wm8994 *wm8994, unsigned short reg,
int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
unsigned short val)
{
- int ret;
-
- val = cpu_to_be16(val);
-
- mutex_lock(&wm8994->io_lock);
-
- ret = wm8994_write(wm8994, reg, 2, &val);
-
- mutex_unlock(&wm8994->io_lock);
-
- return ret;
+ return regmap_write(wm8994->regmap, reg, val);
}
EXPORT_SYMBOL_GPL(wm8994_reg_write);
@@ -146,15 +99,7 @@ EXPORT_SYMBOL_GPL(wm8994_reg_write);
int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
int count, const u16 *buf)
{
- int ret;
-
- mutex_lock(&wm8994->io_lock);
-
- ret = wm8994_write(wm8994, reg, count * 2, buf);
-
- mutex_unlock(&wm8994->io_lock);
-
- return ret;
+ return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16));
}
EXPORT_SYMBOL_GPL(wm8994_bulk_write);
@@ -169,28 +114,7 @@ EXPORT_SYMBOL_GPL(wm8994_bulk_write);
int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
unsigned short mask, unsigned short val)
{
- int ret;
- u16 r;
-
- mutex_lock(&wm8994->io_lock);
-
- ret = wm8994_read(wm8994, reg, 2, &r);
- if (ret < 0)
- goto out;
-
- r = be16_to_cpu(r);
-
- r &= ~mask;
- r |= val;
-
- r = cpu_to_be16(r);
-
- ret = wm8994_write(wm8994, reg, 2, &r);
-
-out:
- mutex_unlock(&wm8994->io_lock);
-
- return ret;
+ return regmap_update_bits(wm8994->regmap, reg, mask, val);
}
EXPORT_SYMBOL_GPL(wm8994_set_bits);
@@ -378,6 +302,11 @@ static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
}
#endif
+static struct regmap_config wm8994_regmap_config = {
+ .reg_bits = 16,
+ .val_bits = 16,
+};
+
/*
* Instantiate the generic non-control parts of the device.
*/
@@ -387,7 +316,6 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
const char *devname;
int ret, i;
- mutex_init(&wm8994->io_lock);
dev_set_drvdata(wm8994->dev, wm8994);
/* Add the on-chip regulators first for bootstrapping */
@@ -397,7 +325,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
NULL, 0);
if (ret != 0) {
dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
- goto err;
+ goto err_regmap;
}
switch (wm8994->type) {
@@ -409,7 +337,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
break;
default:
BUG();
- goto err;
+ goto err_regmap;
}
wm8994->supplies = kzalloc(sizeof(struct regulator_bulk_data) *
@@ -417,7 +345,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
GFP_KERNEL);
if (!wm8994->supplies) {
ret = -ENOMEM;
- goto err;
+ goto err_regmap;
}
switch (wm8994->type) {
@@ -431,7 +359,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
break;
default:
BUG();
- goto err;
+ goto err_regmap;
}
ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies,
@@ -554,7 +482,8 @@ err_get:
regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
err_supplies:
kfree(wm8994->supplies);
-err:
+err_regmap:
+ regmap_exit(wm8994->regmap);
mfd_remove_devices(wm8994->dev);
kfree(wm8994);
return ret;
@@ -569,62 +498,15 @@ static void wm8994_device_exit(struct wm8994 *wm8994)
wm8994->supplies);
regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
kfree(wm8994->supplies);
+ regmap_exit(wm8994->regmap);
kfree(wm8994);
}
-static int wm8994_i2c_read_device(struct wm8994 *wm8994, unsigned short reg,
- int bytes, void *dest)
-{
- struct i2c_client *i2c = wm8994->control_data;
- int ret;
- u16 r = cpu_to_be16(reg);
-
- ret = i2c_master_send(i2c, (unsigned char *)&r, 2);
- if (ret < 0)
- return ret;
- if (ret != 2)
- return -EIO;
-
- ret = i2c_master_recv(i2c, dest, bytes);
- if (ret < 0)
- return ret;
- if (ret != bytes)
- return -EIO;
- return 0;
-}
-
-static int wm8994_i2c_write_device(struct wm8994 *wm8994, unsigned short reg,
- int bytes, const void *src)
-{
- struct i2c_client *i2c = wm8994->control_data;
- struct i2c_msg xfer[2];
- int ret;
-
- reg = cpu_to_be16(reg);
-
- xfer[0].addr = i2c->addr;
- xfer[0].flags = 0;
- xfer[0].len = 2;
- xfer[0].buf = (char *)&reg;
-
- xfer[1].addr = i2c->addr;
- xfer[1].flags = I2C_M_NOSTART;
- xfer[1].len = bytes;
- xfer[1].buf = (char *)src;
-
- ret = i2c_transfer(i2c->adapter, xfer, 2);
- if (ret < 0)
- return ret;
- if (ret != 2)
- return -EIO;
-
- return 0;
-}
-
static int wm8994_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8994 *wm8994;
+ int ret;
wm8994 = kzalloc(sizeof(struct wm8994), GFP_KERNEL);
if (wm8994 == NULL)
@@ -632,12 +514,18 @@ static int wm8994_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, wm8994);
wm8994->dev = &i2c->dev;
- wm8994->control_data = i2c;
- wm8994->read_dev = wm8994_i2c_read_device;
- wm8994->write_dev = wm8994_i2c_write_device;
wm8994->irq = i2c->irq;
wm8994->type = id->driver_data;
+ wm8994->regmap = regmap_init_i2c(i2c, &wm8994_regmap_config);
+ if (IS_ERR(wm8994->regmap)) {
+ ret = PTR_ERR(wm8994->regmap);
+ dev_err(wm8994->dev, "Failed to allocate register map: %d\n",
+ ret);
+ kfree(wm8994);
+ return ret;
+ }
+
return wm8994_device_init(wm8994, i2c->irq);
}
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-25 11:02:55 +0000