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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-09-15 18:54:53 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2011-10-24 14:09:13 +0200
commit5da721c87aee3d94cfc48384073c2ec51a0b9a3b (patch)
tree8204a041df21dd6364728d9915af3a142a88ad1b /include/linux/mfd/wm831x
parentf09ee0451a44a4e913a7c3cec3805508f7de6c54 (diff)
mfd: Support software initiated shutdown of WM831x PMICs
In systems where there is no hardware signal from the processor to the PMIC to initiate the final power off sequence we must initiate the shutdown with a register write to the PMIC. Support such systems in the driver. Since this may prevent a full shutdown of the system platform data is used to enable the feature. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/linux/mfd/wm831x')
-rw-r--r--include/linux/mfd/wm831x/core.h3
-rw-r--r--include/linux/mfd/wm831x/pdata.h3
2 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h
index 8dda8ded5cd..fb3e84f92e9 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 0ba24599fe5..1d7a3f7b3b5 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];