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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-09-15 18:54:53 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-09-20 13:02:09 +0100
commit523d9cfbb2094e095ff08a01c4eac10cc7d287c3 (patch)
treed1cd9bc2434332e2e79170d6c21d443f2ce5c3ff /include/linux/mfd/wm831x
parent92afb286d744511f51a05f8acb6c111d05737617 (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 44acdb25681b..ed8fe0d04097 100644
--- a/include/linux/mfd/wm831x/core.h
+++ b/include/linux/mfd/wm831x/core.h
@@ -371,6 +371,8 @@ 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 */
@@ -409,6 +411,7 @@ 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 0ba24599fe51..1d7a3f7b3b5d 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];