regulator: max77686: Add set_suspend_disable/set_suspend_mode callbacks.

This patch implements set_suspend_disable callback for BUCKs which
support only switch ON/OFF modes during system suspend state, and
set_suspend_mode callbacks for LDOs which also suport Low power mode and
switch ON/OFF modes.

Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c
index 20dae7b95d3871ca51beeb39a435aedadd858766..383eb9d1ae0c82837e745ac5f2b68b2d0da4c047 100644 (file)
--- a/drivers/regulator/max77686.c
+++ b/drivers/regulator/max77686.c
@@ -70,6 +70,82 @@ struct max77686_data {
        unsigned int opmode[MAX77686_REGULATORS];
 };
 
+/* Some BUCKS supports Normal[ON/OFF] mode during suspend */
+static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev)
+{
+       unsigned int val;
+       struct max77686_data *max77686 = rdev_get_drvdata(rdev);
+
+       if (rdev->desc->id == MAX77686_BUCK1)
+               val = 0x1;
+       else
+               val = 0x1 << MAX77686_OPMODE_BUCK234_SHIFT;
+
+       max77686->opmode[rdev->desc->id] = val;
+       return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+                                 rdev->desc->enable_mask,
+                                 val);
+}
+
+/* Some LDOs supports [LPM/Normal]ON mode during suspend state */
+static int max77686_set_suspend_mode(struct regulator_dev *rdev,
+                                    unsigned int mode)
+{
+       struct max77686_data *max77686 = rdev_get_drvdata(rdev);
+       unsigned int val;
+
+       /* BUCK[5-9] doesn't support this feature */
+       if (rdev->desc->id >= MAX77686_BUCK5)
+               return 0;
+
+       switch (mode) {
+       case REGULATOR_MODE_IDLE:                       /* ON in LP Mode */
+               val = 0x2 << MAX77686_OPMODE_SHIFT;
+               break;
+       case REGULATOR_MODE_NORMAL:                     /* ON in Normal Mode */
+               val = 0x3 << MAX77686_OPMODE_SHIFT;
+               break;
+       default:
+               pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
+                       rdev->desc->name, mode);
+               return -EINVAL;
+       }
+
+       max77686->opmode[rdev->desc->id] = val;
+       return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+                                 rdev->desc->enable_mask,
+                                 val);
+}
+
+/* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
+static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
+                                    unsigned int mode)
+{
+       unsigned int val;
+       struct max77686_data *max77686 = rdev_get_drvdata(rdev);
+
+       switch (mode) {
+       case REGULATOR_MODE_STANDBY:                    /* switch off */
+               val = 0x1 << MAX77686_OPMODE_SHIFT;
+               break;
+       case REGULATOR_MODE_IDLE:                       /* ON in LP Mode */
+               val = 0x2 << MAX77686_OPMODE_SHIFT;
+               break;
+       case REGULATOR_MODE_NORMAL:                     /* ON in Normal Mode */
+               val = 0x3 << MAX77686_OPMODE_SHIFT;
+               break;
+       default:
+               pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
+                       rdev->desc->name, mode);
+               return -EINVAL;
+       }
+
+       max77686->opmode[rdev->desc->id] = val;
+       return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+                                 rdev->desc->enable_mask,
+                                 val);
+}
+
 int max77686_enable(struct regulator_dev *rdev)
 {
        struct max77686_data *max77686 = rdev_get_drvdata(rdev);
@@ -113,6 +189,31 @@ static struct regulator_ops max77686_ops = {
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
+       .set_suspend_mode       = max77686_set_suspend_mode,
+};
+
+static struct regulator_ops max77686_ldo_ops = {
+       .list_voltage           = regulator_list_voltage_linear,
+       .map_voltage            = regulator_map_voltage_linear,
+       .is_enabled             = regulator_is_enabled_regmap,
+       .enable                 = max77686_enable,
+       .disable                = regulator_disable_regmap,
+       .get_voltage_sel        = regulator_get_voltage_sel_regmap,
+       .set_voltage_sel        = regulator_set_voltage_sel_regmap,
+       .set_voltage_time_sel   = regulator_set_voltage_time_sel,
+       .set_suspend_mode       = max77686_ldo_set_suspend_mode,
+};
+
+static struct regulator_ops max77686_buck1_ops = {
+       .list_voltage           = regulator_list_voltage_linear,
+       .map_voltage            = regulator_map_voltage_linear,
+       .is_enabled             = regulator_is_enabled_regmap,
+       .enable                 = max77686_enable,
+       .disable                = regulator_disable_regmap,
+       .get_voltage_sel        = regulator_get_voltage_sel_regmap,
+       .set_voltage_sel        = regulator_set_voltage_sel_regmap,
+       .set_voltage_time_sel   = regulator_set_voltage_time_sel,
+       .set_suspend_disable    = max77686_buck_set_suspend_disable,
 };
 
 static struct regulator_ops max77686_buck_dvs_ops = {
@@ -125,6 +226,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
        .set_ramp_delay         = max77686_set_ramp_delay,
+       .set_suspend_disable    = max77686_buck_set_suspend_disable,
 };
 
 #define regulator_desc_ldo(num)                {                               \
@@ -143,7 +245,39 @@ static struct regulator_ops max77686_buck_dvs_ops = {
        .enable_mask    = MAX77686_OPMODE_MASK                          \
                        << MAX77686_OPMODE_SHIFT,                       \
 }
+#define regulator_desc_lpm_ldo(num)    {                               \
+       .name           = "LDO"#num,                                    \
+       .id             = MAX77686_LDO##num,                            \
+       .ops            = &max77686_ldo_ops,                            \
+       .type           = REGULATOR_VOLTAGE,                            \
+       .owner          = THIS_MODULE,                                  \
+       .min_uV         = MAX77686_LDO_MINUV,                           \
+       .uV_step        = MAX77686_LDO_UVSTEP,                          \
+       .ramp_delay     = MAX77686_RAMP_DELAY,                          \
+       .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
+       .vsel_reg       = MAX77686_REG_LDO1CTRL1 + num - 1,             \
+       .vsel_mask      = MAX77686_VSEL_MASK,                           \
+       .enable_reg     = MAX77686_REG_LDO1CTRL1 + num - 1,             \
+       .enable_mask    = MAX77686_OPMODE_MASK                          \
+                       << MAX77686_OPMODE_SHIFT,                       \
+}
 #define regulator_desc_ldo_low(num)            {                       \
+       .name           = "LDO"#num,                                    \
+       .id             = MAX77686_LDO##num,                            \
+       .ops            = &max77686_ldo_ops,                            \
+       .type           = REGULATOR_VOLTAGE,                            \
+       .owner          = THIS_MODULE,                                  \
+       .min_uV         = MAX77686_LDO_LOW_MINUV,                       \
+       .uV_step        = MAX77686_LDO_LOW_UVSTEP,                      \
+       .ramp_delay     = MAX77686_RAMP_DELAY,                          \
+       .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
+       .vsel_reg       = MAX77686_REG_LDO1CTRL1 + num - 1,             \
+       .vsel_mask      = MAX77686_VSEL_MASK,                           \
+       .enable_reg     = MAX77686_REG_LDO1CTRL1 + num - 1,             \
+       .enable_mask    = MAX77686_OPMODE_MASK                          \
+                       << MAX77686_OPMODE_SHIFT,                       \
+}
+#define regulator_desc_ldo1_low(num)           {                       \
        .name           = "LDO"#num,                                    \
        .id             = MAX77686_LDO##num,                            \
        .ops            = &max77686_ops,                                \
@@ -177,7 +311,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
 #define regulator_desc_buck1(num)              {                       \
        .name           = "BUCK"#num,                                   \
        .id             = MAX77686_BUCK##num,                           \
-       .ops            = &max77686_ops,                                \
+       .ops            = &max77686_buck1_ops,                          \
        .type           = REGULATOR_VOLTAGE,                            \
        .owner          = THIS_MODULE,                                  \
        .min_uV         = MAX77686_BUCK_MINUV,                          \
@@ -207,7 +341,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
 }
 
 static struct regulator_desc regulators[] = {
-       regulator_desc_ldo_low(1),
+       regulator_desc_ldo1_low(1),
        regulator_desc_ldo_low(2),
        regulator_desc_ldo(3),
        regulator_desc_ldo(4),
@@ -216,13 +350,13 @@ static struct regulator_desc regulators[] = {
        regulator_desc_ldo_low(7),
        regulator_desc_ldo_low(8),
        regulator_desc_ldo(9),
-       regulator_desc_ldo(10),
-       regulator_desc_ldo(11),
-       regulator_desc_ldo(12),
+       regulator_desc_lpm_ldo(10),
+       regulator_desc_lpm_ldo(11),
+       regulator_desc_lpm_ldo(12),
        regulator_desc_ldo(13),
-       regulator_desc_ldo(14),
+       regulator_desc_lpm_ldo(14),
        regulator_desc_ldo_low(15),
-       regulator_desc_ldo(16),
+       regulator_desc_lpm_ldo(16),
        regulator_desc_ldo(17),
        regulator_desc_ldo(18),
        regulator_desc_ldo(19),