diff options
| -rw-r--r-- | drivers/mfd/wm831x-core.c | 11 | ||||
| -rw-r--r-- | drivers/mfd/wm831x-i2c.c | 8 | ||||
| -rw-r--r-- | drivers/mfd/wm831x-spi.c | 8 | ||||
| -rw-r--r-- | include/linux/mfd/wm831x/core.h | 3 | ||||
| -rw-r--r-- | include/linux/mfd/wm831x/pdata.h | 3 |
5 files changed, 33 insertions, 0 deletions
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c index 282e76a..099b610 100644 --- a/drivers/mfd/wm831x-core.c +++ b/drivers/mfd/wm831x-core.c @@ -24,6 +24,7 @@ #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 @@ -1305,6 +1306,7 @@ 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) { @@ -1604,6 +1606,15 @@ 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 a06cbc7..3ff8c13 100644 --- a/drivers/mfd/wm831x-i2c.c +++ b/drivers/mfd/wm831x-i2c.c @@ -109,6 +109,13 @@ 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 +140,7 @@ 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 eed8e4f..8e8138b 100644 --- a/drivers/mfd/wm831x-spi.c +++ b/drivers/mfd/wm831x-spi.c @@ -121,6 +121,13 @@ 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, @@ -146,6 +153,7 @@ static struct spi_driver wm8311_spi_driver = { }, .probe = wm831x_spi_probe, .remove = __devexit_p(wm831x_spi_remove), + .shutdown = wm831x_spi_shutdown, }; static struct spi_driver wm8312_spi_driver = { diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 8dda8de..fb3e84f 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -374,6 +374,8 @@ struct wm831x { int irq_masks_cur[WM831X_NUM_IRQ_REGS]; /* Currently active value */ int irq_masks_cache[WM831X_NUM_IRQ_REGS]; /* Cached hardware value */ + bool soft_shutdown; + /* Chip revision based flags */ unsigned has_gpio_ena:1; /* Has GPIO enable bit */ unsigned has_cs_sts:1; /* Has current sink status bit */ @@ -412,6 +414,7 @@ int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg, int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq); void wm831x_device_exit(struct wm831x *wm831x); int wm831x_device_suspend(struct wm831x *wm831x); +void wm831x_device_shutdown(struct wm831x *wm831x); int wm831x_irq_init(struct wm831x *wm831x, int irq); void wm831x_irq_exit(struct wm831x *wm831x); void wm831x_auxadc_init(struct wm831x *wm831x); diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h index 0ba2459..1d7a3f7 100644 --- a/include/linux/mfd/wm831x/pdata.h +++ b/include/linux/mfd/wm831x/pdata.h @@ -123,6 +123,9 @@ struct wm831x_pdata { /** Disable the touchscreen */ bool disable_touch; + /** The driver should initiate a power off sequence during shutdown */ + bool soft_shutdown; + int irq_base; int gpio_base; int gpio_defaults[WM831X_GPIO_NUM]; |