mfd: stmpe: add optional regulators
The STMPE has VCC and VIO supply lines, and sometimes (as on
Ux500) this comes from a software-controlled regulator. Make
it possible to supply the STMPE with power from these
regulators.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h
index 48395a6..9808986 100644
--- a/include/linux/mfd/stmpe.h
+++ b/include/linux/mfd/stmpe.h
@@ -11,6 +11,7 @@
#include <linux/mutex.h>
struct device;
+struct regulator;
enum stmpe_block {
STMPE_BLOCK_GPIO = 1 << 0,
@@ -62,6 +63,8 @@
/**
* struct stmpe - STMPE MFD structure
+ * @vcc: optional VCC regulator
+ * @vio: optional VIO regulator
* @lock: lock protecting I/O operations
* @irq_lock: IRQ bus lock
* @dev: device, mostly for dev_dbg()
@@ -80,6 +83,8 @@
* @pdata: platform data
*/
struct stmpe {
+ struct regulator *vcc;
+ struct regulator *vio;
struct mutex lock;
struct mutex irq_lock;
struct device *dev;