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path: root/drivers/regulator/da9052-regulator.c
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Diffstat (limited to 'drivers/regulator/da9052-regulator.c')
-rw-r--r--drivers/regulator/da9052-regulator.c233
1 files changed, 128 insertions, 105 deletions
diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c
index 96b569abb46c..fbebe538a648 100644
--- a/drivers/regulator/da9052-regulator.c
+++ b/drivers/regulator/da9052-regulator.c
@@ -1,16 +1,10 @@
-/*
-* da9052-regulator.c: Regulator driver for DA9052
-*
-* Copyright(c) 2011 Dialog Semiconductor Ltd.
-*
-* Author: David Dajun Chen <dchen@diasemi.com>
-*
-* This program is free software; you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation; either version 2 of the License, or
-* (at your option) any later version.
-*
-*/
+// SPDX-License-Identifier: GPL-2.0+
+//
+// da9052-regulator.c: Regulator driver for DA9052
+//
+// Copyright(c) 2011 Dialog Semiconductor Ltd.
+//
+// Author: David Dajun Chen <dchen@diasemi.com>
#include <linux/module.h>
#include <linux/moduleparam.h>
@@ -19,10 +13,8 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
-#ifdef CONFIG_OF
#include <linux/of.h>
#include <linux/regulator/of_regulator.h>
-#endif
#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>
@@ -70,15 +62,16 @@ struct da9052_regulator_info {
int step_uV;
int min_uV;
int max_uV;
+ unsigned char activate_bit;
};
struct da9052_regulator {
struct da9052 *da9052;
- struct da9052_regulator_info *info;
+ const struct da9052_regulator_info *info;
struct regulator_dev *rdev;
};
-static int verify_range(struct da9052_regulator_info *info,
+static int verify_range(const struct da9052_regulator_info *info,
int min_uV, int max_uV)
{
if (min_uV > info->max_uV || max_uV < info->min_uV)
@@ -158,7 +151,7 @@ static int da9052_list_voltage(struct regulator_dev *rdev,
unsigned int selector)
{
struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
- struct da9052_regulator_info *info = regulator->info;
+ const struct da9052_regulator_info *info = regulator->info;
int id = rdev_get_id(rdev);
int volt_uV;
@@ -182,7 +175,7 @@ static int da9052_map_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
- struct da9052_regulator_info *info = regulator->info;
+ const struct da9052_regulator_info *info = regulator->info;
int id = rdev_get_id(rdev);
int ret, sel;
@@ -209,33 +202,93 @@ static int da9052_map_voltage(struct regulator_dev *rdev,
return sel;
}
-static struct regulator_ops da9052_dcdc_ops = {
+static int da9052_regulator_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
+ const struct da9052_regulator_info *info = regulator->info;
+ int id = rdev_get_id(rdev);
+ int ret;
+
+ ret = da9052_reg_update(regulator->da9052, rdev->desc->vsel_reg,
+ rdev->desc->vsel_mask, selector);
+ if (ret < 0)
+ return ret;
+
+ /* Some LDOs and DCDCs are DVC controlled which requires enabling of
+ * the activate bit to implment the changes on the output.
+ */
+ switch (id) {
+ case DA9052_ID_BUCK1:
+ case DA9052_ID_BUCK2:
+ case DA9052_ID_BUCK3:
+ case DA9052_ID_LDO2:
+ case DA9052_ID_LDO3:
+ ret = da9052_reg_update(regulator->da9052, DA9052_SUPPLY_REG,
+ info->activate_bit, info->activate_bit);
+ break;
+ }
+
+ return ret;
+}
+
+static int da9052_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
+ unsigned int old_sel,
+ unsigned int new_sel)
+{
+ struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
+ const struct da9052_regulator_info *info = regulator->info;
+ int id = rdev_get_id(rdev);
+ int ret = 0;
+
+ /* The DVC controlled LDOs and DCDCs ramp with 6.25mV/µs after enabling
+ * the activate bit.
+ */
+ switch (id) {
+ case DA9052_ID_BUCK1:
+ case DA9052_ID_BUCK2:
+ case DA9052_ID_BUCK3:
+ case DA9052_ID_LDO2:
+ case DA9052_ID_LDO3:
+ ret = DIV_ROUND_UP(abs(new_sel - old_sel) * info->step_uV,
+ 6250);
+ break;
+ }
+
+ return ret;
+}
+
+static const struct regulator_ops da9052_dcdc_ops = {
.get_current_limit = da9052_dcdc_get_current_limit,
.set_current_limit = da9052_dcdc_set_current_limit,
.list_voltage = da9052_list_voltage,
.map_voltage = da9052_map_voltage,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
- .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_voltage_sel = da9052_regulator_set_voltage_sel,
+ .set_voltage_time_sel = da9052_regulator_set_voltage_time_sel,
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
};
-static struct regulator_ops da9052_ldo_ops = {
+static const struct regulator_ops da9052_ldo_ops = {
.list_voltage = da9052_list_voltage,
.map_voltage = da9052_map_voltage,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
- .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_voltage_sel = da9052_regulator_set_voltage_sel,
+ .set_voltage_time_sel = da9052_regulator_set_voltage_time_sel,
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
};
-#define DA9052_LDO(_id, step, min, max, sbits, ebits, abits) \
+#define DA9052_LDO(_id, _name, step, min, max, sbits, ebits, abits) \
{\
.reg_desc = {\
- .name = #_id,\
+ .name = #_name,\
+ .of_match = of_match_ptr(#_name),\
+ .regulators_node = of_match_ptr("regulators"),\
.ops = &da9052_ldo_ops,\
.type = REGULATOR_VOLTAGE,\
.id = DA9052_ID_##_id,\
@@ -243,20 +296,21 @@ static struct regulator_ops da9052_ldo_ops = {
.owner = THIS_MODULE,\
.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
.vsel_mask = (1 << (sbits)) - 1,\
- .apply_reg = DA9052_SUPPLY_REG, \
- .apply_bit = (abits), \
.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
.enable_mask = 1 << (ebits),\
},\
.min_uV = (min) * 1000,\
.max_uV = (max) * 1000,\
.step_uV = (step) * 1000,\
+ .activate_bit = (abits),\
}
-#define DA9052_DCDC(_id, step, min, max, sbits, ebits, abits) \
+#define DA9052_DCDC(_id, _name, step, min, max, sbits, ebits, abits) \
{\
.reg_desc = {\
- .name = #_id,\
+ .name = #_name,\
+ .of_match = of_match_ptr(#_name),\
+ .regulators_node = of_match_ptr("regulators"),\
.ops = &da9052_dcdc_ops,\
.type = REGULATOR_VOLTAGE,\
.id = DA9052_ID_##_id,\
@@ -264,54 +318,53 @@ static struct regulator_ops da9052_ldo_ops = {
.owner = THIS_MODULE,\
.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
.vsel_mask = (1 << (sbits)) - 1,\
- .apply_reg = DA9052_SUPPLY_REG, \
- .apply_bit = (abits), \
.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
.enable_mask = 1 << (ebits),\
},\
.min_uV = (min) * 1000,\
.max_uV = (max) * 1000,\
.step_uV = (step) * 1000,\
+ .activate_bit = (abits),\
}
-static struct da9052_regulator_info da9052_regulator_info[] = {
- DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
- DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
- DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO),
- DA9052_DCDC(BUCK4, 50, 1800, 3600, 5, 6, 0),
- DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0),
- DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
- DA9052_LDO(LDO3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
- DA9052_LDO(LDO4, 25, 1725, 3300, 6, 6, 0),
- DA9052_LDO(LDO5, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO6, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO7, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO8, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO9, 50, 1250, 3650, 6, 6, 0),
- DA9052_LDO(LDO10, 50, 1200, 3600, 6, 6, 0),
+static const struct da9052_regulator_info da9052_regulator_info[] = {
+ DA9052_DCDC(BUCK1, buck1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
+ DA9052_DCDC(BUCK2, buck2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
+ DA9052_DCDC(BUCK3, buck3, 25, 950, 2525, 6, 6, DA9052_SUPPLY_VBMEMGO),
+ DA9052_DCDC(BUCK4, buck4, 50, 1800, 3600, 5, 6, 0),
+ DA9052_LDO(LDO1, ldo1, 50, 600, 1800, 5, 6, 0),
+ DA9052_LDO(LDO2, ldo2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
+ DA9052_LDO(LDO3, ldo3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
+ DA9052_LDO(LDO4, ldo4, 25, 1725, 3300, 6, 6, 0),
+ DA9052_LDO(LDO5, ldo5, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO6, ldo6, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO7, ldo7, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO8, ldo8, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO9, ldo9, 50, 1250, 3650, 6, 6, 0),
+ DA9052_LDO(LDO10, ldo10, 50, 1200, 3600, 6, 6, 0),
};
-static struct da9052_regulator_info da9053_regulator_info[] = {
- DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
- DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
- DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO),
- DA9052_DCDC(BUCK4, 25, 925, 2500, 6, 6, 0),
- DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0),
- DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
- DA9052_LDO(LDO3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
- DA9052_LDO(LDO4, 25, 1725, 3300, 6, 6, 0),
- DA9052_LDO(LDO5, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO6, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO7, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO8, 50, 1200, 3600, 6, 6, 0),
- DA9052_LDO(LDO9, 50, 1250, 3650, 6, 6, 0),
- DA9052_LDO(LDO10, 50, 1200, 3600, 6, 6, 0),
+static const struct da9052_regulator_info da9053_regulator_info[] = {
+ DA9052_DCDC(BUCK1, buck1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
+ DA9052_DCDC(BUCK2, buck2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
+ DA9052_DCDC(BUCK3, buck3, 25, 950, 2525, 6, 6, DA9052_SUPPLY_VBMEMGO),
+ DA9052_DCDC(BUCK4, buck4, 25, 950, 2525, 6, 6, 0),
+ DA9052_LDO(LDO1, ldo1, 50, 600, 1800, 5, 6, 0),
+ DA9052_LDO(LDO2, ldo2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
+ DA9052_LDO(LDO3, ldo3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
+ DA9052_LDO(LDO4, ldo4, 25, 1725, 3300, 6, 6, 0),
+ DA9052_LDO(LDO5, ldo5, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO6, ldo6, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO7, ldo7, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO8, ldo8, 50, 1200, 3600, 6, 6, 0),
+ DA9052_LDO(LDO9, ldo9, 50, 1250, 3650, 6, 6, 0),
+ DA9052_LDO(LDO10, ldo10, 50, 1200, 3600, 6, 6, 0),
};
-static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id,
- int id)
+static inline const struct da9052_regulator_info *find_regulator_info(u8 chip_id,
+ int id)
{
- struct da9052_regulator_info *info;
+ const struct da9052_regulator_info *info;
int i;
switch (chip_id) {
@@ -325,6 +378,7 @@ static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id,
case DA9053_AA:
case DA9053_BA:
case DA9053_BB:
+ case DA9053_BC:
for (i = 0; i < ARRAY_SIZE(da9053_regulator_info); i++) {
info = &da9053_regulator_info[i];
if (info->reg_desc.id == id)
@@ -338,6 +392,7 @@ static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id,
static int da9052_regulator_probe(struct platform_device *pdev)
{
+ const struct mfd_cell *cell = mfd_get_cell(pdev);
struct regulator_config config = { };
struct da9052_regulator *regulator;
struct da9052 *da9052;
@@ -349,48 +404,25 @@ static int da9052_regulator_probe(struct platform_device *pdev)
return -ENOMEM;
da9052 = dev_get_drvdata(pdev->dev.parent);
- pdata = da9052->dev->platform_data;
+ pdata = dev_get_platdata(da9052->dev);
regulator->da9052 = da9052;
regulator->info = find_regulator_info(regulator->da9052->chip_id,
- pdev->id);
+ cell->id);
if (regulator->info == NULL) {
dev_err(&pdev->dev, "invalid regulator ID specified\n");
return -EINVAL;
}
- config.dev = &pdev->dev;
+ config.dev = da9052->dev;
config.driver_data = regulator;
config.regmap = da9052->regmap;
- if (pdata && pdata->regulators) {
- config.init_data = pdata->regulators[pdev->id];
- } else {
-#ifdef CONFIG_OF
- struct device_node *nproot, *np;
-
- nproot = of_node_get(da9052->dev->of_node);
- if (!nproot)
- return -ENODEV;
-
- nproot = of_find_node_by_name(nproot, "regulators");
- if (!nproot)
- return -ENODEV;
-
- for_each_child_of_node(nproot, np) {
- if (!of_node_cmp(np->name,
- regulator->info->reg_desc.name)) {
- config.init_data = of_get_regulator_init_data(
- &pdev->dev, np);
- config.of_node = np;
- break;
- }
- }
- of_node_put(nproot);
-#endif
- }
+ if (pdata)
+ config.init_data = pdata->regulators[cell->id];
- regulator->rdev = regulator_register(&regulator->info->reg_desc,
- &config);
+ regulator->rdev = devm_regulator_register(&pdev->dev,
+ &regulator->info->reg_desc,
+ &config);
if (IS_ERR(regulator->rdev)) {
dev_err(&pdev->dev, "failed to register regulator %s\n",
regulator->info->reg_desc.name);
@@ -402,20 +434,11 @@ static int da9052_regulator_probe(struct platform_device *pdev)
return 0;
}
-static int da9052_regulator_remove(struct platform_device *pdev)
-{
- struct da9052_regulator *regulator = platform_get_drvdata(pdev);
-
- regulator_unregister(regulator->rdev);
- return 0;
-}
-
static struct platform_driver da9052_regulator_driver = {
.probe = da9052_regulator_probe,
- .remove = da9052_regulator_remove,
.driver = {
.name = "da9052-regulator",
- .owner = THIS_MODULE,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
};
generated by cgit (git 2.34.1) at 2025-12-25 13:53:07 +0000