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path: root/drivers/regulator/s5m8767.c
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Diffstat (limited to 'drivers/regulator/s5m8767.c')
-rw-r--r--drivers/regulator/s5m8767.c163
1 files changed, 44 insertions, 119 deletions
diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index bfc0e143bf40..fe2631378ccd 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -3,8 +3,9 @@
// Copyright (c) 2011 Samsung Electronics Co., Ltd
// http://www.samsung.com
+#include <linux/cleanup.h>
#include <linux/err.h>
-#include <linux/of_gpio.h>
+#include <linux/of.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/platform_device.h>
@@ -34,8 +35,8 @@ struct s5m8767_info {
u8 buck2_vol[8];
u8 buck3_vol[8];
u8 buck4_vol[8];
- int buck_gpios[3];
- int buck_ds[3];
+ struct gpio_desc *buck_gpios[3];
+ struct gpio_desc *buck_ds[3];
int buck_gpioindex;
};
@@ -271,9 +272,9 @@ static inline int s5m8767_set_high(struct s5m8767_info *s5m8767)
{
int temp_index = s5m8767->buck_gpioindex;
- gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
- gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
- gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
+ gpiod_set_value(s5m8767->buck_gpios[0], !!(temp_index & BIT(2)));
+ gpiod_set_value(s5m8767->buck_gpios[1], !!(temp_index & BIT(1)));
+ gpiod_set_value(s5m8767->buck_gpios[2], !!(temp_index & BIT(0)));
return 0;
}
@@ -282,9 +283,9 @@ static inline int s5m8767_set_low(struct s5m8767_info *s5m8767)
{
int temp_index = s5m8767->buck_gpioindex;
- gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
- gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
- gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
+ gpiod_set_value(s5m8767->buck_gpios[2], !!(temp_index & BIT(0)));
+ gpiod_set_value(s5m8767->buck_gpios[1], !!(temp_index & BIT(1)));
+ gpiod_set_value(s5m8767->buck_gpios[0], !!(temp_index & BIT(2)));
return 0;
}
@@ -481,50 +482,14 @@ static int s5m8767_enable_ext_control(struct s5m8767_info *s5m8767,
#ifdef CONFIG_OF
-static int s5m8767_pmic_dt_parse_dvs_gpio(struct sec_pmic_dev *iodev,
- struct sec_platform_data *pdata,
- struct device_node *pmic_np)
-{
- int i, gpio;
-
- for (i = 0; i < 3; i++) {
- gpio = of_get_named_gpio(pmic_np,
- "s5m8767,pmic-buck-dvs-gpios", i);
- if (!gpio_is_valid(gpio)) {
- dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio);
- return -EINVAL;
- }
- pdata->buck_gpios[i] = gpio;
- }
- return 0;
-}
-
-static int s5m8767_pmic_dt_parse_ds_gpio(struct sec_pmic_dev *iodev,
- struct sec_platform_data *pdata,
- struct device_node *pmic_np)
-{
- int i, gpio;
-
- for (i = 0; i < 3; i++) {
- gpio = of_get_named_gpio(pmic_np,
- "s5m8767,pmic-buck-ds-gpios", i);
- if (!gpio_is_valid(gpio)) {
- dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio);
- return -EINVAL;
- }
- pdata->buck_ds[i] = gpio;
- }
- return 0;
-}
-
static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
struct sec_platform_data *pdata)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
- struct device_node *pmic_np, *regulators_np, *reg_np;
+ struct device_node *pmic_np, *reg_np;
struct sec_regulator_data *rdata;
struct sec_opmode_data *rmode;
- unsigned int i, dvs_voltage_nr = 8, ret;
+ unsigned int i, dvs_voltage_nr = 8;
pmic_np = iodev->dev->of_node;
if (!pmic_np) {
@@ -532,7 +497,8 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
return -ENODEV;
}
- regulators_np = of_get_child_by_name(pmic_np, "regulators");
+ struct device_node *regulators_np __free(device_node) = of_get_child_by_name(pmic_np,
+ "regulators");
if (!regulators_np) {
dev_err(iodev->dev, "could not find regulators sub-node\n");
return -EINVAL;
@@ -544,18 +510,14 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
rdata = devm_kcalloc(&pdev->dev,
pdata->num_regulators, sizeof(*rdata),
GFP_KERNEL);
- if (!rdata) {
- of_node_put(regulators_np);
+ if (!rdata)
return -ENOMEM;
- }
rmode = devm_kcalloc(&pdev->dev,
pdata->num_regulators, sizeof(*rmode),
GFP_KERNEL);
- if (!rmode) {
- of_node_put(regulators_np);
+ if (!rmode)
return -ENOMEM;
- }
pdata->regulators = rdata;
pdata->opmode = rmode;
@@ -581,7 +543,6 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
rdata->ext_control_gpiod = NULL;
} else if (IS_ERR(rdata->ext_control_gpiod)) {
of_node_put(reg_np);
- of_node_put(regulators_np);
return PTR_ERR(rdata->ext_control_gpiod);
}
@@ -603,8 +564,6 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
rmode++;
}
- of_node_put(regulators_np);
-
if (of_property_read_bool(pmic_np, "s5m8767,pmic-buck2-uses-gpio-dvs")) {
pdata->buck2_gpiodvs = true;
@@ -640,10 +599,6 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
pdata->buck4_gpiodvs) {
- ret = s5m8767_pmic_dt_parse_dvs_gpio(iodev, pdata, pmic_np);
- if (ret)
- return -EINVAL;
-
if (of_property_read_u32(pmic_np,
"s5m8767,pmic-buck-default-dvs-idx",
&pdata->buck_default_idx)) {
@@ -657,10 +612,6 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
}
}
- ret = s5m8767_pmic_dt_parse_ds_gpio(iodev, pdata, pmic_np);
- if (ret)
- return -EINVAL;
-
pdata->buck2_ramp_enable = of_property_read_bool(pmic_np, "s5m8767,pmic-buck2-ramp-enable");
pdata->buck3_ramp_enable = of_property_read_bool(pmic_np, "s5m8767,pmic-buck3-ramp-enable");
pdata->buck4_ramp_enable = of_property_read_bool(pmic_np, "s5m8767,pmic-buck4-ramp-enable");
@@ -689,6 +640,8 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
struct regulator_config config = { };
struct s5m8767_info *s5m8767;
int i, ret, buck_init;
+ const char *gpiods_names[3] = { "S5M8767 DS2", "S5M8767 DS3", "S5M8767 DS4" };
+ const char *gpiodvs_names[3] = { "S5M8767 SET1", "S5M8767 SET2", "S5M8767 SET3" };
if (!pdata) {
dev_err(pdev->dev.parent, "Platform data not supplied\n");
@@ -736,12 +689,6 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
- s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
- s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
- s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
- s5m8767->buck_ds[0] = pdata->buck_ds[0];
- s5m8767->buck_ds[1] = pdata->buck_ds[1];
- s5m8767->buck_ds[2] = pdata->buck_ds[2];
s5m8767->ramp_delay = pdata->buck_ramp_delay;
s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
@@ -792,58 +739,36 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
pdata->buck4_gpiodvs) {
+ for (i = 0; i < 3; i++) {
+ enum gpiod_flags flags;
- if (!gpio_is_valid(pdata->buck_gpios[0]) ||
- !gpio_is_valid(pdata->buck_gpios[1]) ||
- !gpio_is_valid(pdata->buck_gpios[2])) {
- dev_err(&pdev->dev, "GPIO NOT VALID\n");
- return -EINVAL;
- }
-
- ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[0],
- "S5M8767 SET1");
- if (ret)
- return ret;
-
- ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[1],
- "S5M8767 SET2");
- if (ret)
- return ret;
-
- ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[2],
- "S5M8767 SET3");
- if (ret)
- return ret;
+ if (s5m8767->buck_gpioindex & BIT(2 - i))
+ flags = GPIOD_OUT_HIGH;
+ else
+ flags = GPIOD_OUT_LOW;
+
+ s5m8767->buck_gpios[i] = devm_gpiod_get_index(iodev->dev,
+ "s5m8767,pmic-buck-dvs", i,
+ flags);
+ if (IS_ERR(s5m8767->buck_gpios[i])) {
+ return dev_err_probe(iodev->dev, PTR_ERR(s5m8767->buck_gpios[i]),
+ "invalid gpio[%d]\n", i);
+ }
- /* SET1 GPIO */
- gpio_direction_output(pdata->buck_gpios[0],
- (s5m8767->buck_gpioindex >> 2) & 0x1);
- /* SET2 GPIO */
- gpio_direction_output(pdata->buck_gpios[1],
- (s5m8767->buck_gpioindex >> 1) & 0x1);
- /* SET3 GPIO */
- gpio_direction_output(pdata->buck_gpios[2],
- (s5m8767->buck_gpioindex >> 0) & 0x1);
+ gpiod_set_consumer_name(s5m8767->buck_gpios[i], gpiodvs_names[i]);
+ }
}
- ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[0], "S5M8767 DS2");
- if (ret)
- return ret;
-
- ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[1], "S5M8767 DS3");
- if (ret)
- return ret;
-
- ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[2], "S5M8767 DS4");
- if (ret)
- return ret;
-
- /* DS2 GPIO */
- gpio_direction_output(pdata->buck_ds[0], 0x0);
- /* DS3 GPIO */
- gpio_direction_output(pdata->buck_ds[1], 0x0);
- /* DS4 GPIO */
- gpio_direction_output(pdata->buck_ds[2], 0x0);
+ for (i = 0; i < 3; i++) {
+ s5m8767->buck_ds[i] = devm_gpiod_get_index(iodev->dev,
+ "s5m8767,pmic-buck-ds", i,
+ GPIOD_OUT_LOW);
+ if (IS_ERR(s5m8767->buck_ds[i])) {
+ return dev_err_probe(iodev->dev, PTR_ERR(s5m8767->buck_ds[i]),
+ "can't get GPIO %d\n", i);
+ }
+ gpiod_set_consumer_name(s5m8767->buck_ds[i], gpiods_names[i]);
+ }
regmap_update_bits(s5m8767->iodev->regmap_pmic,
S5M8767_REG_BUCK2CTRL, 1 << 1,