mfd: Add power off functionality to TWL

TWL family of PMICs, used in master mode, have a power off
functionality. The resulting power off sequence shuts down all the SoC
supplies, LDOs, etc. The sequence is described in the datasheets
chapter "Power-Off Sequence".
Note, that board must be wired correctly for the power off to work as
expected.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 114c0f6fc63..78d3465251d 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -652,10 +652,12 @@ struct twl4030_power_data {
         unsigned num;
         struct twl4030_resconfig *resource_config;
 #define TWL4030_RESCONFIG_UNDEF ((u8)-1)
+        bool use_poweroff;      /* Board is wired for TWL poweroff */
 };
 
 extern void twl4030_power_init(struct twl4030_power_data *triton2_scripts);
 extern int twl4030_remove_script(u8 flags);
+extern void twl4030_power_off(void);
 
 struct twl4030_codec_data {
         unsigned int digimic_delay; /* in ms */