Palmas device have control outputs like REGEN1, REGEN2, REGEN3,
SYSEN1 and SYSEN2. These control outputs can be used for controlling
external voltage switches to enabled/disable voltage outputs.
Add support of these control outputs through regulator framework.
Signed-off-by: Laxman Dewangan <ldewangan@xxxxxxxxxx>
---
drivers/regulator/palmas-regulator.c | 95 +++++++++++++++++++++++++++++----
include/linux/mfd/palmas.h | 6 ++
2 files changed, 89 insertions(+), 12 deletions(-)
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index 7c7992b..28080a7 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -166,6 +166,26 @@ static const struct regs_info palmas_regs_info[] = {
.vsel_addr = PALMAS_LDOUSB_VOLTAGE,
.ctrl_addr = PALMAS_LDOUSB_CTRL,
},
+ {
+ .name = "REGEN1",
+ .ctrl_addr = PALMAS_REGEN1_CTRL,
+ },
+ {
+ .name = "REGEN2",
+ .ctrl_addr = PALMAS_REGEN2_CTRL,
+ },
+ {
+ .name = "REGEN3",
+ .ctrl_addr = PALMAS_REGEN3_CTRL,
+ },
+ {
+ .name = "SYSEN1",
+ .ctrl_addr = PALMAS_SYSEN1_CTRL,
+ },
+ {
+ .name = "SYSEN2",
+ .ctrl_addr = PALMAS_SYSEN2_CTRL,
+ },
};
#define SMPS_CTRL_MODE_OFF 0x00
@@ -423,6 +443,12 @@ static struct regulator_ops palmas_ops_ldo = {
.map_voltage = regulator_map_voltage_linear,
};
+static struct regulator_ops palmas_ops_extreg = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
/*
* setup the hardware based sleep configuration of the SMPS/LDO regulators
* from the platform data. This is different to the software based control
@@ -524,6 +550,28 @@ static int palmas_ldo_init(struct palmas *palmas, int id,
return 0;
}
+static int palmas_extreg_init(struct palmas *palmas, int id,
+ struct palmas_reg_init *reg_init)
+{
+ unsigned int addr;
+ int ret;
+ unsigned int val = 0;
+
+ addr = palmas_regs_info[id].ctrl_addr;
+
+ if (reg_init->mode_sleep)
+ val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
+
+ ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
+ addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
+ addr, ret);
+ return ret;
+ }
+ return 0;
+}
+
static struct of_regulator_match palmas_matches[] = {
{ .name = "smps12", },
{ .name = "smps123", },
@@ -546,6 +594,11 @@ static struct of_regulator_match palmas_matches[] = {
{ .name = "ldo9", },
{ .name = "ldoln", },
{ .name = "ldousb", },
+ { .name = "regen1", },
+ { .name = "regen2", },
+ { .name = "regen3", },
+ { .name = "sysen1", },
+ { .name = "sysen2", },
};
static void palmas_dt_to_pdata(struct device *dev,
@@ -764,21 +817,34 @@ static int palmas_regulators_probe(struct platform_device *pdev)
/* Register the regulators */
pmic->desc[id].name = palmas_regs_info[id].name;
pmic->desc[id].id = id;
- pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
-
- pmic->desc[id].ops = &palmas_ops_ldo;
-
pmic->desc[id].type = REGULATOR_VOLTAGE;
pmic->desc[id].owner = THIS_MODULE;
- pmic->desc[id].min_uV = 900000;
- pmic->desc[id].uV_step = 50000;
- pmic->desc[id].linear_min_sel = 1;
- pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
+
+ if (id < PALMAS_REG_REGEN1) {
+ pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
+ pmic->desc[id].ops = &palmas_ops_ldo;
+ pmic->desc[id].min_uV = 900000;
+ pmic->desc[id].uV_step = 50000;
+ pmic->desc[id].linear_min_sel = 1;
+ pmic->desc[id].vsel_reg =
+ PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
palmas_regs_info[id].vsel_addr);
- pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
- pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
+ pmic->desc[id].vsel_mask =
+ PALMAS_LDO1_VOLTAGE_VSEL_MASK;
+ pmic->desc[id].enable_reg =
+ PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
+ palmas_regs_info[id].ctrl_addr);
+ pmic->desc[id].enable_mask =
+ PALMAS_LDO1_CTRL_MODE_ACTIVE;
+ } else {
+ pmic->desc[id].n_voltages = 1;
+ pmic->desc[id].ops = &palmas_ops_extreg;
+ pmic->desc[id].enable_reg =
+ PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
palmas_regs_info[id].ctrl_addr);
- pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
+ pmic->desc[id].enable_mask =
+ PALMAS_REGEN1_CTRL_MODE_ACTIVE;
+ }
if (pdata)
config.init_data = pdata->reg_data[id];
@@ -804,7 +870,12 @@ static int palmas_regulators_probe(struct platform_device *pdev)
if (pdata) {
reg_init = pdata->reg_init[id];
if (reg_init) {
- ret = palmas_ldo_init(palmas, id, reg_init);
+ if (id < PALMAS_REG_REGEN1)
+ ret = palmas_ldo_init(palmas,
+ id, reg_init);
+ else
+ ret = palmas_extreg_init(palmas,
+ id, reg_init);
if (ret) {
regulator_unregister(pmic->rdev[id]);
goto err_unregister_regulator;
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 4a066d0..fb04d07 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -164,6 +164,12 @@ enum palmas_regulators {
PALMAS_REG_LDO9,
PALMAS_REG_LDOLN,
PALMAS_REG_LDOUSB,
+ /* External regulators */
+ PALMAS_REG_REGEN1,
+ PALMAS_REG_REGEN2,
+ PALMAS_REG_REGEN3,
+ PALMAS_REG_SYSEN1,
+ PALMAS_REG_SYSEN2,
/* Total number of regulators */
PALMAS_NUM_REGS,
};
--
1.7.1.1
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