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path: root/drivers/regulator/palmas-regulator.c
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Diffstat (limited to 'drivers/regulator/palmas-regulator.c')
-rw-r--r--drivers/regulator/palmas-regulator.c208
1 files changed, 171 insertions, 37 deletions
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index 7e2b165972e6..9c62b1d34685 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -33,6 +33,7 @@ struct regs_info {
u8 vsel_addr;
u8 ctrl_addr;
u8 tstep_addr;
+ int sleep_id;
};
static const struct regs_info palmas_regs_info[] = {
@@ -42,6 +43,7 @@ static const struct regs_info palmas_regs_info[] = {
.vsel_addr = PALMAS_SMPS12_VOLTAGE,
.ctrl_addr = PALMAS_SMPS12_CTRL,
.tstep_addr = PALMAS_SMPS12_TSTEP,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
},
{
.name = "SMPS123",
@@ -49,12 +51,14 @@ static const struct regs_info palmas_regs_info[] = {
.vsel_addr = PALMAS_SMPS12_VOLTAGE,
.ctrl_addr = PALMAS_SMPS12_CTRL,
.tstep_addr = PALMAS_SMPS12_TSTEP,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
},
{
.name = "SMPS3",
.sname = "smps3-in",
.vsel_addr = PALMAS_SMPS3_VOLTAGE,
.ctrl_addr = PALMAS_SMPS3_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
},
{
.name = "SMPS45",
@@ -62,6 +66,7 @@ static const struct regs_info palmas_regs_info[] = {
.vsel_addr = PALMAS_SMPS45_VOLTAGE,
.ctrl_addr = PALMAS_SMPS45_CTRL,
.tstep_addr = PALMAS_SMPS45_TSTEP,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
},
{
.name = "SMPS457",
@@ -69,6 +74,7 @@ static const struct regs_info palmas_regs_info[] = {
.vsel_addr = PALMAS_SMPS45_VOLTAGE,
.ctrl_addr = PALMAS_SMPS45_CTRL,
.tstep_addr = PALMAS_SMPS45_TSTEP,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
},
{
.name = "SMPS6",
@@ -76,12 +82,14 @@ static const struct regs_info palmas_regs_info[] = {
.vsel_addr = PALMAS_SMPS6_VOLTAGE,
.ctrl_addr = PALMAS_SMPS6_CTRL,
.tstep_addr = PALMAS_SMPS6_TSTEP,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
},
{
.name = "SMPS7",
.sname = "smps7-in",
.vsel_addr = PALMAS_SMPS7_VOLTAGE,
.ctrl_addr = PALMAS_SMPS7_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
},
{
.name = "SMPS8",
@@ -89,108 +97,128 @@ static const struct regs_info palmas_regs_info[] = {
.vsel_addr = PALMAS_SMPS8_VOLTAGE,
.ctrl_addr = PALMAS_SMPS8_CTRL,
.tstep_addr = PALMAS_SMPS8_TSTEP,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
},
{
.name = "SMPS9",
.sname = "smps9-in",
.vsel_addr = PALMAS_SMPS9_VOLTAGE,
.ctrl_addr = PALMAS_SMPS9_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
},
{
.name = "SMPS10_OUT2",
.sname = "smps10-in",
.ctrl_addr = PALMAS_SMPS10_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
},
{
.name = "SMPS10_OUT1",
.sname = "smps10-out2",
.ctrl_addr = PALMAS_SMPS10_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
},
{
.name = "LDO1",
.sname = "ldo1-in",
.vsel_addr = PALMAS_LDO1_VOLTAGE,
.ctrl_addr = PALMAS_LDO1_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO1,
},
{
.name = "LDO2",
.sname = "ldo2-in",
.vsel_addr = PALMAS_LDO2_VOLTAGE,
.ctrl_addr = PALMAS_LDO2_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO2,
},
{
.name = "LDO3",
.sname = "ldo3-in",
.vsel_addr = PALMAS_LDO3_VOLTAGE,
.ctrl_addr = PALMAS_LDO3_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO3,
},
{
.name = "LDO4",
.sname = "ldo4-in",
.vsel_addr = PALMAS_LDO4_VOLTAGE,
.ctrl_addr = PALMAS_LDO4_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO4,
},
{
.name = "LDO5",
.sname = "ldo5-in",
.vsel_addr = PALMAS_LDO5_VOLTAGE,
.ctrl_addr = PALMAS_LDO5_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO5,
},
{
.name = "LDO6",
.sname = "ldo6-in",
.vsel_addr = PALMAS_LDO6_VOLTAGE,
.ctrl_addr = PALMAS_LDO6_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO6,
},
{
.name = "LDO7",
.sname = "ldo7-in",
.vsel_addr = PALMAS_LDO7_VOLTAGE,
.ctrl_addr = PALMAS_LDO7_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO7,
},
{
.name = "LDO8",
.sname = "ldo8-in",
.vsel_addr = PALMAS_LDO8_VOLTAGE,
.ctrl_addr = PALMAS_LDO8_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO8,
},
{
.name = "LDO9",
.sname = "ldo9-in",
.vsel_addr = PALMAS_LDO9_VOLTAGE,
.ctrl_addr = PALMAS_LDO9_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO9,
},
{
.name = "LDOLN",
.sname = "ldoln-in",
.vsel_addr = PALMAS_LDOLN_VOLTAGE,
.ctrl_addr = PALMAS_LDOLN_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
},
{
.name = "LDOUSB",
.sname = "ldousb-in",
.vsel_addr = PALMAS_LDOUSB_VOLTAGE,
.ctrl_addr = PALMAS_LDOUSB_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
},
{
.name = "REGEN1",
.ctrl_addr = PALMAS_REGEN1_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
},
{
.name = "REGEN2",
.ctrl_addr = PALMAS_REGEN2_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
},
{
.name = "REGEN3",
.ctrl_addr = PALMAS_REGEN3_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
},
{
.name = "SYSEN1",
.ctrl_addr = PALMAS_SYSEN1_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
},
{
.name = "SYSEN2",
.ctrl_addr = PALMAS_SYSEN2_CTRL,
+ .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
},
};
@@ -478,6 +506,17 @@ static struct regulator_ops palmas_ops_smps = {
.set_ramp_delay = palmas_smps_set_ramp_delay,
};
+static struct regulator_ops palmas_ops_ext_control_smps = {
+ .set_mode = palmas_set_mode_smps,
+ .get_mode = palmas_get_mode_smps,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = palmas_list_voltage_smps,
+ .map_voltage = palmas_map_voltage_smps,
+ .set_voltage_time_sel = palma_smps_set_voltage_smps_time_sel,
+ .set_ramp_delay = palmas_smps_set_ramp_delay,
+};
+
static struct regulator_ops palmas_ops_smps10 = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
@@ -513,12 +552,37 @@ static struct regulator_ops palmas_ops_ldo = {
.map_voltage = regulator_map_voltage_linear,
};
+static struct regulator_ops palmas_ops_ext_control_ldo = {
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .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,
};
+static struct regulator_ops palmas_ops_ext_control_extreg = {
+};
+
+static int palmas_regulator_config_external(struct palmas *palmas, int id,
+ struct palmas_reg_init *reg_init)
+{
+ int sleep_id = palmas_regs_info[id].sleep_id;
+ int ret;
+
+ ret = palmas_ext_control_req_config(palmas, sleep_id,
+ reg_init->roof_floor, true);
+ if (ret < 0)
+ dev_err(palmas->dev,
+ "Ext control config for regulator %d failed %d\n",
+ id, ret);
+ return ret;
+}
+
/*
* setup the hardware based sleep configuration of the SMPS/LDO regulators
* from the platform data. This is different to the software based control
@@ -577,7 +641,22 @@ static int palmas_smps_init(struct palmas *palmas, int id,
return ret;
}
+ if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
+ (id != PALMAS_REG_SMPS10_OUT2)) {
+ /* Enable externally controlled regulator */
+ addr = palmas_regs_info[id].ctrl_addr;
+ ret = palmas_smps_read(palmas, addr, &reg);
+ if (ret < 0)
+ return ret;
+ if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
+ reg |= SMPS_CTRL_MODE_ON;
+ ret = palmas_smps_write(palmas, addr, reg);
+ if (ret < 0)
+ return ret;
+ }
+ return palmas_regulator_config_external(palmas, id, reg_init);
+ }
return 0;
}
@@ -608,6 +687,20 @@ static int palmas_ldo_init(struct palmas *palmas, int id,
if (ret)
return ret;
+ if (reg_init->roof_floor) {
+ /* Enable externally controlled regulator */
+ addr = palmas_regs_info[id].ctrl_addr;
+ ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
+ addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
+ PALMAS_LDO1_CTRL_MODE_ACTIVE);
+ if (ret < 0) {
+ dev_err(palmas->dev,
+ "LDO Register 0x%02x update failed %d\n",
+ addr, ret);
+ return ret;
+ }
+ return palmas_regulator_config_external(palmas, id, reg_init);
+ }
return 0;
}
@@ -630,6 +723,21 @@ static int palmas_extreg_init(struct palmas *palmas, int id,
addr, ret);
return ret;
}
+
+ if (reg_init->roof_floor) {
+ /* Enable externally controlled regulator */
+ addr = palmas_regs_info[id].ctrl_addr;
+ ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
+ addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
+ PALMAS_REGEN1_CTRL_MODE_ACTIVE);
+ if (ret < 0) {
+ dev_err(palmas->dev,
+ "Resource Register 0x%02x update failed %d\n",
+ addr, ret);
+ return ret;
+ }
+ return palmas_regulator_config_external(palmas, id, reg_init);
+ }
return 0;
}
@@ -712,7 +820,7 @@ static void palmas_dt_to_pdata(struct device *dev,
int idx, ret;
node = of_node_get(node);
- regulators = of_find_node_by_name(node, "regulators");
+ regulators = of_get_child_by_name(node, "regulators");
if (!regulators) {
dev_info(dev, "regulator node not found\n");
return;
@@ -740,9 +848,35 @@ static void palmas_dt_to_pdata(struct device *dev,
of_property_read_bool(palmas_matches[idx].of_node,
"ti,warm-reset");
- pdata->reg_init[idx]->roof_floor =
- of_property_read_bool(palmas_matches[idx].of_node,
- "ti,roof-floor");
+ ret = of_property_read_u32(palmas_matches[idx].of_node,
+ "ti,roof-floor", &prop);
+ /* EINVAL: Property not found */
+ if (ret != -EINVAL) {
+ int econtrol;
+
+ /* use default value, when no value is specified */
+ econtrol = PALMAS_EXT_CONTROL_NSLEEP;
+ if (!ret) {
+ switch (prop) {
+ case 1:
+ econtrol = PALMAS_EXT_CONTROL_ENABLE1;
+ break;
+ case 2:
+ econtrol = PALMAS_EXT_CONTROL_ENABLE2;
+ break;
+ case 3:
+ econtrol = PALMAS_EXT_CONTROL_NSLEEP;
+ break;
+ default:
+ WARN_ON(1);
+ dev_warn(dev,
+ "%s: Invalid roof-floor option: %u\n",
+ palmas_matches[idx].name, prop);
+ break;
+ }
+ }
+ pdata->reg_init[idx]->roof_floor = econtrol;
+ }
ret = of_property_read_u32(palmas_matches[idx].of_node,
"ti,mode-sleep", &prop);
@@ -856,7 +990,7 @@ static int palmas_regulators_probe(struct platform_device *pdev)
if (ret < 0) {
dev_err(&pdev->dev,
"reading TSTEP reg failed: %d\n", ret);
- goto err_unregister_regulator;
+ return ret;
}
pmic->desc[id].ramp_delay =
palmas_smps_ramp_delay[reg & 0x3];
@@ -868,7 +1002,9 @@ static int palmas_regulators_probe(struct platform_device *pdev)
reg_init = pdata->reg_init[id];
ret = palmas_smps_init(palmas, id, reg_init);
if (ret)
- goto err_unregister_regulator;
+ return ret;
+ } else {
+ reg_init = NULL;
}
/* Register the regulators */
@@ -909,11 +1045,15 @@ static int palmas_regulators_probe(struct platform_device *pdev)
ret = palmas_smps_read(pmic->palmas, addr, &reg);
if (ret)
- goto err_unregister_regulator;
+ return ret;
if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
pmic->range[id] = 1;
- pmic->desc[id].ops = &palmas_ops_smps;
+ if (reg_init && reg_init->roof_floor)
+ pmic->desc[id].ops =
+ &palmas_ops_ext_control_smps;
+ else
+ pmic->desc[id].ops = &palmas_ops_smps;
pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
pmic->desc[id].vsel_reg =
PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
@@ -925,7 +1065,7 @@ static int palmas_regulators_probe(struct platform_device *pdev)
addr = palmas_regs_info[id].ctrl_addr;
ret = palmas_smps_read(pmic->palmas, addr, &reg);
if (ret)
- goto err_unregister_regulator;
+ return ret;
pmic->current_reg_mode[id] = reg &
PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
}
@@ -941,13 +1081,13 @@ static int palmas_regulators_probe(struct platform_device *pdev)
pmic->desc[id].supply_name = palmas_regs_info[id].sname;
config.of_node = palmas_matches[id].of_node;
- rdev = regulator_register(&pmic->desc[id], &config);
+ rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
+ &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev,
"failed to register %s regulator\n",
pdev->name);
- ret = PTR_ERR(rdev);
- goto err_unregister_regulator;
+ return PTR_ERR(rdev);
}
/* Save regulator for cleanup */
@@ -956,6 +1096,10 @@ static int palmas_regulators_probe(struct platform_device *pdev)
/* Start this loop from the id left from previous loop */
for (; id < PALMAS_NUM_REGS; id++) {
+ if (pdata && pdata->reg_init[id])
+ reg_init = pdata->reg_init[id];
+ else
+ reg_init = NULL;
/* Miss out regulators which are not available due
* to alternate functions.
@@ -969,7 +1113,11 @@ static int palmas_regulators_probe(struct platform_device *pdev)
if (id < PALMAS_REG_REGEN1) {
pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
- pmic->desc[id].ops = &palmas_ops_ldo;
+ if (reg_init && reg_init->roof_floor)
+ pmic->desc[id].ops =
+ &palmas_ops_ext_control_ldo;
+ else
+ 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;
@@ -999,7 +1147,11 @@ static int palmas_regulators_probe(struct platform_device *pdev)
pmic->desc[id].enable_time = 2000;
} else {
pmic->desc[id].n_voltages = 1;
- pmic->desc[id].ops = &palmas_ops_extreg;
+ if (reg_init && reg_init->roof_floor)
+ pmic->desc[id].ops =
+ &palmas_ops_ext_control_extreg;
+ else
+ 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);
@@ -1015,13 +1167,13 @@ static int palmas_regulators_probe(struct platform_device *pdev)
pmic->desc[id].supply_name = palmas_regs_info[id].sname;
config.of_node = palmas_matches[id].of_node;
- rdev = regulator_register(&pmic->desc[id], &config);
+ rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
+ &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev,
"failed to register %s regulator\n",
pdev->name);
- ret = PTR_ERR(rdev);
- goto err_unregister_regulator;
+ return PTR_ERR(rdev);
}
/* Save regulator for cleanup */
@@ -1037,31 +1189,14 @@ static int palmas_regulators_probe(struct platform_device *pdev)
else
ret = palmas_extreg_init(palmas,
id, reg_init);
- if (ret) {
- regulator_unregister(pmic->rdev[id]);
- goto err_unregister_regulator;
- }
+ if (ret)
+ return ret;
}
}
}
return 0;
-
-err_unregister_regulator:
- while (--id >= 0)
- regulator_unregister(pmic->rdev[id]);
- return ret;
-}
-
-static int palmas_regulators_remove(struct platform_device *pdev)
-{
- struct palmas_pmic *pmic = platform_get_drvdata(pdev);
- int id;
-
- for (id = 0; id < PALMAS_NUM_REGS; id++)
- regulator_unregister(pmic->rdev[id]);
- return 0;
}
static struct of_device_id of_palmas_match_tbl[] = {
@@ -1083,7 +1218,6 @@ static struct platform_driver palmas_driver = {
.owner = THIS_MODULE,
},
.probe = palmas_regulators_probe,
- .remove = palmas_regulators_remove,
};
static int __init palmas_init(void)