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path: root/drivers/regulator/wm831x-ldo.c
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Diffstat (limited to 'drivers/regulator/wm831x-ldo.c')
-rw-r--r--drivers/regulator/wm831x-ldo.c183
1 files changed, 41 insertions, 142 deletions
diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
index 1ec379a9a95..eca0eeb78ac 100644
--- a/drivers/regulator/wm831x-ldo.c
+++ b/drivers/regulator/wm831x-ldo.c
@@ -62,41 +62,10 @@ static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data)
* General purpose LDOs
*/
-#define WM831X_GP_LDO_SELECTOR_LOW 0xe
-#define WM831X_GP_LDO_MAX_SELECTOR 0x1f
-
-static int wm831x_gp_ldo_list_voltage(struct regulator_dev *rdev,
- unsigned int selector)
-{
- /* 0.9-1.6V in 50mV steps */
- if (selector <= WM831X_GP_LDO_SELECTOR_LOW)
- return 900000 + (selector * 50000);
- /* 1.7-3.3V in 100mV steps */
- if (selector <= WM831X_GP_LDO_MAX_SELECTOR)
- return 1600000 + ((selector - WM831X_GP_LDO_SELECTOR_LOW)
- * 100000);
- return -EINVAL;
-}
-
-static int wm831x_gp_ldo_map_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
-{
- int volt, vsel;
-
- if (min_uV < 900000)
- vsel = 0;
- else if (min_uV < 1700000)
- vsel = ((min_uV - 900000) / 50000);
- else
- vsel = ((min_uV - 1700000) / 100000)
- + WM831X_GP_LDO_SELECTOR_LOW + 1;
-
- volt = wm831x_gp_ldo_list_voltage(rdev, vsel);
- if (volt < min_uV || volt > max_uV)
- return -EINVAL;
-
- return vsel;
-}
+static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000),
+ REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000),
+};
static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
int uV)
@@ -105,7 +74,7 @@ static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
struct wm831x *wm831x = ldo->wm831x;
int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
- sel = wm831x_gp_ldo_map_voltage(rdev, uV, uV);
+ sel = regulator_map_voltage_linear_range(rdev, uV, uV);
if (sel < 0)
return sel;
@@ -230,8 +199,8 @@ static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev,
static struct regulator_ops wm831x_gp_ldo_ops = {
- .list_voltage = wm831x_gp_ldo_list_voltage,
- .map_voltage = wm831x_gp_ldo_map_voltage,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage,
@@ -250,7 +219,7 @@ static struct regulator_ops wm831x_gp_ldo_ops = {
static int wm831x_gp_ldo_probe(struct platform_device *pdev)
{
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
- struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
struct regulator_config config = { };
int id;
struct wm831x_ldo *ldo;
@@ -266,10 +235,8 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
- if (ldo == NULL) {
- dev_err(&pdev->dev, "Unable to allocate private data\n");
+ if (!ldo)
return -ENOMEM;
- }
ldo->wm831x = wm831x;
@@ -290,7 +257,7 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev)
ldo->desc.id = id;
ldo->desc.type = REGULATOR_VOLTAGE;
- ldo->desc.n_voltages = WM831X_GP_LDO_MAX_SELECTOR + 1;
+ ldo->desc.n_voltages = 32;
ldo->desc.ops = &wm831x_gp_ldo_ops;
ldo->desc.owner = THIS_MODULE;
ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
@@ -299,6 +266,8 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev)
ldo->desc.enable_mask = 1 << id;
ldo->desc.bypass_reg = ldo->base;
ldo->desc.bypass_mask = WM831X_LDO1_SWI;
+ ldo->desc.linear_ranges = wm831x_gp_ldo_ranges;
+ ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges);
config.dev = pdev->dev.parent;
if (pdata)
@@ -306,7 +275,8 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev)
config.driver_data = ldo;
config.regmap = wm831x->regmap;
- ldo->regulator = regulator_register(&ldo->desc, &config);
+ ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
+ &config);
if (IS_ERR(ldo->regulator)) {
ret = PTR_ERR(ldo->regulator);
dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
@@ -315,41 +285,26 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev)
}
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
- ret = request_threaded_irq(irq, NULL, wm831x_ldo_uv_irq,
- IRQF_TRIGGER_RISING, ldo->name,
- ldo);
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ wm831x_ldo_uv_irq,
+ IRQF_TRIGGER_RISING, ldo->name,
+ ldo);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
irq, ret);
- goto err_regulator;
+ goto err;
}
platform_set_drvdata(pdev, ldo);
return 0;
-err_regulator:
- regulator_unregister(ldo->regulator);
err:
return ret;
}
-static int wm831x_gp_ldo_remove(struct platform_device *pdev)
-{
- struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
-
- platform_set_drvdata(pdev, NULL);
-
- free_irq(wm831x_irq(ldo->wm831x,
- platform_get_irq_byname(pdev, "UV")), ldo);
- regulator_unregister(ldo->regulator);
-
- return 0;
-}
-
static struct platform_driver wm831x_gp_ldo_driver = {
.probe = wm831x_gp_ldo_probe,
- .remove = wm831x_gp_ldo_remove,
.driver = {
.name = "wm831x-ldo",
.owner = THIS_MODULE,
@@ -360,43 +315,10 @@ static struct platform_driver wm831x_gp_ldo_driver = {
* Analogue LDOs
*/
-
-#define WM831X_ALDO_SELECTOR_LOW 0xc
-#define WM831X_ALDO_MAX_SELECTOR 0x1f
-
-static int wm831x_aldo_list_voltage(struct regulator_dev *rdev,
- unsigned int selector)
-{
- /* 1-1.6V in 50mV steps */
- if (selector <= WM831X_ALDO_SELECTOR_LOW)
- return 1000000 + (selector * 50000);
- /* 1.7-3.5V in 100mV steps */
- if (selector <= WM831X_ALDO_MAX_SELECTOR)
- return 1600000 + ((selector - WM831X_ALDO_SELECTOR_LOW)
- * 100000);
- return -EINVAL;
-}
-
-static int wm831x_aldo_map_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
-{
- int volt, vsel;
-
- if (min_uV < 1000000)
- vsel = 0;
- else if (min_uV < 1700000)
- vsel = ((min_uV - 1000000) / 50000);
- else
- vsel = ((min_uV - 1700000) / 100000)
- + WM831X_ALDO_SELECTOR_LOW + 1;
-
- volt = wm831x_aldo_list_voltage(rdev, vsel);
- if (volt < min_uV || volt > max_uV)
- return -EINVAL;
-
- return vsel;
-
-}
+static const struct regulator_linear_range wm831x_aldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000),
+ REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000),
+};
static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
int uV)
@@ -405,7 +327,7 @@ static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
struct wm831x *wm831x = ldo->wm831x;
int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
- sel = wm831x_aldo_map_voltage(rdev, uV, uV);
+ sel = regulator_map_voltage_linear_range(rdev, uV, uV);
if (sel < 0)
return sel;
@@ -488,8 +410,8 @@ static int wm831x_aldo_get_status(struct regulator_dev *rdev)
}
static struct regulator_ops wm831x_aldo_ops = {
- .list_voltage = wm831x_aldo_list_voltage,
- .map_voltage = wm831x_aldo_map_voltage,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_suspend_voltage = wm831x_aldo_set_suspend_voltage,
@@ -507,7 +429,7 @@ static struct regulator_ops wm831x_aldo_ops = {
static int wm831x_aldo_probe(struct platform_device *pdev)
{
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
- struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
struct regulator_config config = { };
int id;
struct wm831x_ldo *ldo;
@@ -523,10 +445,8 @@ static int wm831x_aldo_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
- if (ldo == NULL) {
- dev_err(&pdev->dev, "Unable to allocate private data\n");
+ if (!ldo)
return -ENOMEM;
- }
ldo->wm831x = wm831x;
@@ -547,7 +467,9 @@ static int wm831x_aldo_probe(struct platform_device *pdev)
ldo->desc.id = id;
ldo->desc.type = REGULATOR_VOLTAGE;
- ldo->desc.n_voltages = WM831X_ALDO_MAX_SELECTOR + 1;
+ ldo->desc.n_voltages = 32;
+ ldo->desc.linear_ranges = wm831x_aldo_ranges;
+ ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges);
ldo->desc.ops = &wm831x_aldo_ops;
ldo->desc.owner = THIS_MODULE;
ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
@@ -563,7 +485,8 @@ static int wm831x_aldo_probe(struct platform_device *pdev)
config.driver_data = ldo;
config.regmap = wm831x->regmap;
- ldo->regulator = regulator_register(&ldo->desc, &config);
+ ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
+ &config);
if (IS_ERR(ldo->regulator)) {
ret = PTR_ERR(ldo->regulator);
dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
@@ -572,38 +495,25 @@ static int wm831x_aldo_probe(struct platform_device *pdev)
}
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
- ret = request_threaded_irq(irq, NULL, wm831x_ldo_uv_irq,
- IRQF_TRIGGER_RISING, ldo->name, ldo);
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ wm831x_ldo_uv_irq,
+ IRQF_TRIGGER_RISING, ldo->name, ldo);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
irq, ret);
- goto err_regulator;
+ goto err;
}
platform_set_drvdata(pdev, ldo);
return 0;
-err_regulator:
- regulator_unregister(ldo->regulator);
err:
return ret;
}
-static int wm831x_aldo_remove(struct platform_device *pdev)
-{
- struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
-
- free_irq(wm831x_irq(ldo->wm831x, platform_get_irq_byname(pdev, "UV")),
- ldo);
- regulator_unregister(ldo->regulator);
-
- return 0;
-}
-
static struct platform_driver wm831x_aldo_driver = {
.probe = wm831x_aldo_probe,
- .remove = wm831x_aldo_remove,
.driver = {
.name = "wm831x-aldo",
.owner = THIS_MODULE,
@@ -663,7 +573,7 @@ static struct regulator_ops wm831x_alive_ldo_ops = {
static int wm831x_alive_ldo_probe(struct platform_device *pdev)
{
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
- struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
struct regulator_config config = { };
int id;
struct wm831x_ldo *ldo;
@@ -680,10 +590,8 @@ static int wm831x_alive_ldo_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
- if (ldo == NULL) {
- dev_err(&pdev->dev, "Unable to allocate private data\n");
+ if (!ldo)
return -ENOMEM;
- }
ldo->wm831x = wm831x;
@@ -721,7 +629,8 @@ static int wm831x_alive_ldo_probe(struct platform_device *pdev)
config.driver_data = ldo;
config.regmap = wm831x->regmap;
- ldo->regulator = regulator_register(&ldo->desc, &config);
+ ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
+ &config);
if (IS_ERR(ldo->regulator)) {
ret = PTR_ERR(ldo->regulator);
dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
@@ -737,18 +646,8 @@ err:
return ret;
}
-static int wm831x_alive_ldo_remove(struct platform_device *pdev)
-{
- struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
-
- regulator_unregister(ldo->regulator);
-
- return 0;
-}
-
static struct platform_driver wm831x_alive_ldo_driver = {
.probe = wm831x_alive_ldo_probe,
- .remove = wm831x_alive_ldo_remove,
.driver = {
.name = "wm831x-alive-ldo",
.owner = THIS_MODULE,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 09:53:20 +0000