mfd: Add stmpe auto sleep feature

Some STMPE devices support entering sleep mode automatically on a
specified timeout of inactivity on the I2C bus with the host system.

Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Sundar R Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h
index 90faa98b577f..39ca7588659b 100644
--- a/include/linux/mfd/stmpe.h
+++ b/include/linux/mfd/stmpe.h
@@ -170,6 +170,8 @@ struct stmpe_ts_platform_data {
  * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*)
  * @irq_trigger: IRQ trigger to use for the interrupt to the host
  * @irq_invert_polarity: IRQ line is connected with reversed polarity
+ * @autosleep: bool to enable/disable stmpe autosleep
+ * @autosleep_timeout: inactivity timeout in milliseconds for autosleep
  * @irq_base: base IRQ number.  %STMPE_NR_IRQS irqs will be used, or
  *            %STMPE_NR_INTERNAL_IRQS if the GPIO driver is not used.
  * @gpio: GPIO-specific platform data
@@ -182,6 +184,8 @@ struct stmpe_platform_data {
         int irq_base;
         unsigned int irq_trigger;
         bool irq_invert_polarity;
+        bool autosleep;
+        int autosleep_timeout;
 
         struct stmpe_gpio_platform_data *gpio;
         struct stmpe_keypad_platform_data *keypad;