mfd: Add support for tps65910 device sleep

Adding support for device sleep through the external input control
signal "SLEEP".
Changing the SLEEP signal state can switch the device into SLEEP and
ACTIVE state.
Also adding sleep configuration for different resources so that they
should be keep on during sleep state of device.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h
index 1c6c2860d1a6..56903ad04283 100644
--- a/include/linux/mfd/tps65910.h
+++ b/include/linux/mfd/tps65910.h
@@ -783,6 +783,18 @@
 #define TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3            0x4
 #define TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP          0x8
 
+/*
+ * Sleep keepon data: Maintains the state in sleep mode
+ * @therm_keepon: Keep on the thermal monitoring in sleep state.
+ * @clkout32k_keepon: Keep on the 32KHz clock output in sleep state.
+ * @i2chs_keepon: Keep on high speed internal clock in sleep state.
+ */
+struct tps65910_sleep_keepon_data {
+        unsigned therm_keepon:1;
+        unsigned clkout32k_keepon:1;
+        unsigned i2chs_keepon:1;
+};
+
 /**
  * struct tps65910_board
  * Board platform data may be used to initialize regulators.
@@ -794,6 +806,8 @@ struct tps65910_board {
         int irq_base;
         int vmbch_threshold;
         int vmbch2_threshold;
+        bool en_dev_slp;
+        struct tps65910_sleep_keepon_data *slp_keepon;
         bool en_gpio_sleep[TPS6591X_MAX_NUM_GPIO];
         unsigned long regulator_ext_sleep_control[TPS65910_NUM_REGS];
         struct regulator_init_data *tps65910_pmic_init_data[TPS65910_NUM_REGS];