[PATCH 6/6] regulator: wm8400: Modernise driver

From: Mark Brown
Date: Wed May 09 2012 - 19:48:50 EST

Update the driver to use all the regmap based helpers, saving a nice chunk
of code (especially for the DCDCs).

Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
drivers/regulator/wm8400-regulator.c | 169 +++++++++-------------------------
1 file changed, 44 insertions(+), 125 deletions(-)

diff --git a/drivers/regulator/wm8400-regulator.c b/drivers/regulator/wm8400-regulator.c
index 4408b78..69a2b7c 100644
--- a/drivers/regulator/wm8400-regulator.c
+++ b/drivers/regulator/wm8400-regulator.c
@@ -19,31 +19,6 @@
#include <linux/regulator/driver.h>
#include <linux/mfd/wm8400-private.h>

-static int wm8400_ldo_is_enabled(struct regulator_dev *dev)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
- u16 val;
-
- val = wm8400_reg_read(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev));
- return (val & WM8400_LDO1_ENA) != 0;
-}
-
-static int wm8400_ldo_enable(struct regulator_dev *dev)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
-
- return wm8400_set_bits(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev),
- WM8400_LDO1_ENA, WM8400_LDO1_ENA);
-}
-
-static int wm8400_ldo_disable(struct regulator_dev *dev)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
-
- return wm8400_set_bits(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev),
- WM8400_LDO1_ENA, 0);
-}
-
static int wm8400_ldo_list_voltage(struct regulator_dev *dev,
unsigned selector)
{
@@ -56,21 +31,9 @@ static int wm8400_ldo_list_voltage(struct regulator_dev *dev,
return 1600000 + ((selector - 14) * 100000);
}

-static int wm8400_ldo_get_voltage_sel(struct regulator_dev *dev)
+static int wm8400_ldo_map_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
- u16 val;
-
- val = wm8400_reg_read(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev));
- val &= WM8400_LDO1_VSEL_MASK;
-
- return val;
-}
-
-static int wm8400_ldo_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV, unsigned *selector)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
u16 val;

if (min_uV < 900000 || min_uV > 3300000)
@@ -94,92 +57,19 @@ static int wm8400_ldo_set_voltage(struct regulator_dev *dev,
val += 0xf;
}

- *selector = val;
-
- return wm8400_set_bits(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev),
- WM8400_LDO1_VSEL_MASK, val);
+ return val;
}

static struct regulator_ops wm8400_ldo_ops = {
- .is_enabled = wm8400_ldo_is_enabled,
- .enable = wm8400_ldo_enable,
- .disable = wm8400_ldo_disable,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
.list_voltage = wm8400_ldo_list_voltage,
- .get_voltage_sel = wm8400_ldo_get_voltage_sel,
- .set_voltage = wm8400_ldo_set_voltage,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .map_voltage = wm8400_ldo_map_voltage,
};

-static int wm8400_dcdc_is_enabled(struct regulator_dev *dev)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
- int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
- u16 val;
-
- val = wm8400_reg_read(wm8400, WM8400_DCDC1_CONTROL_1 + offset);
- return (val & WM8400_DC1_ENA) != 0;
-}
-
-static int wm8400_dcdc_enable(struct regulator_dev *dev)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
- int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
-
- return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
- WM8400_DC1_ENA, WM8400_DC1_ENA);
-}
-
-static int wm8400_dcdc_disable(struct regulator_dev *dev)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
- int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
-
- return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
- WM8400_DC1_ENA, 0);
-}
-
-static int wm8400_dcdc_list_voltage(struct regulator_dev *dev,
- unsigned selector)
-{
- if (selector > WM8400_DC1_VSEL_MASK)
- return -EINVAL;
-
- return 850000 + (selector * 25000);
-}
-
-static int wm8400_dcdc_get_voltage_sel(struct regulator_dev *dev)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
- u16 val;
- int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
-
- val = wm8400_reg_read(wm8400, WM8400_DCDC1_CONTROL_1 + offset);
- val &= WM8400_DC1_VSEL_MASK;
-
- return val;
-}
-
-static int wm8400_dcdc_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV, unsigned *selector)
-{
- struct wm8400 *wm8400 = rdev_get_drvdata(dev);
- u16 val;
- int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
-
- if (min_uV < 850000)
- return -EINVAL;
-
- val = DIV_ROUND_UP(min_uV - 850000, 25000);
-
- if (850000 + (25000 * val) > max_uV)
- return -EINVAL;
- BUG_ON(850000 + (25000 * val) < min_uV);
-
- *selector = val;
-
- return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
- WM8400_DC1_VSEL_MASK, val);
-}
-
static unsigned int wm8400_dcdc_get_mode(struct regulator_dev *dev)
{
struct wm8400 *wm8400 = rdev_get_drvdata(dev);
@@ -258,12 +148,12 @@ static unsigned int wm8400_dcdc_get_optimum_mode(struct regulator_dev *dev,
}

static struct regulator_ops wm8400_dcdc_ops = {
- .is_enabled = wm8400_dcdc_is_enabled,
- .enable = wm8400_dcdc_enable,
- .disable = wm8400_dcdc_disable,
- .list_voltage = wm8400_dcdc_list_voltage,
- .get_voltage_sel = wm8400_dcdc_get_voltage_sel,
- .set_voltage = wm8400_dcdc_set_voltage,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_mode = wm8400_dcdc_get_mode,
.set_mode = wm8400_dcdc_set_mode,
.get_optimum_mode = wm8400_dcdc_get_optimum_mode,
@@ -274,7 +164,11 @@ static struct regulator_desc regulators[] = {
.name = "LDO1",
.id = WM8400_LDO1,
.ops = &wm8400_ldo_ops,
+ .enable_reg = WM8400_LDO1_CONTROL,
+ .enable_mask = WM8400_LDO1_ENA,
.n_voltages = WM8400_LDO1_VSEL_MASK + 1,
+ .vsel_reg = WM8400_LDO1_CONTROL,
+ .vsel_mask = WM8400_LDO1_VSEL_MASK,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -282,15 +176,23 @@ static struct regulator_desc regulators[] = {
.name = "LDO2",
.id = WM8400_LDO2,
.ops = &wm8400_ldo_ops,
+ .enable_reg = WM8400_LDO2_CONTROL,
+ .enable_mask = WM8400_LDO2_ENA,
.n_voltages = WM8400_LDO2_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
+ .vsel_reg = WM8400_LDO2_CONTROL,
+ .vsel_mask = WM8400_LDO2_VSEL_MASK,
.owner = THIS_MODULE,
},
{
.name = "LDO3",
.id = WM8400_LDO3,
.ops = &wm8400_ldo_ops,
+ .enable_reg = WM8400_LDO3_CONTROL,
+ .enable_mask = WM8400_LDO3_ENA,
.n_voltages = WM8400_LDO3_VSEL_MASK + 1,
+ .vsel_reg = WM8400_LDO3_CONTROL,
+ .vsel_mask = WM8400_LDO3_VSEL_MASK,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -298,7 +200,11 @@ static struct regulator_desc regulators[] = {
.name = "LDO4",
.id = WM8400_LDO4,
.ops = &wm8400_ldo_ops,
+ .enable_reg = WM8400_LDO4_CONTROL,
+ .enable_mask = WM8400_LDO4_ENA,
.n_voltages = WM8400_LDO4_VSEL_MASK + 1,
+ .vsel_reg = WM8400_LDO4_CONTROL,
+ .vsel_mask = WM8400_LDO4_VSEL_MASK,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -306,7 +212,13 @@ static struct regulator_desc regulators[] = {
.name = "DCDC1",
.id = WM8400_DCDC1,
.ops = &wm8400_dcdc_ops,
+ .enable_reg = WM8400_DCDC1_CONTROL_1,
+ .enable_mask = WM8400_DC1_ENA_MASK,
.n_voltages = WM8400_DC1_VSEL_MASK + 1,
+ .vsel_reg = WM8400_DCDC1_CONTROL_1,
+ .vsel_mask = WM8400_DC1_VSEL_MASK,
+ .min_uV = 850000,
+ .uV_step = 25000,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -314,7 +226,13 @@ static struct regulator_desc regulators[] = {
.name = "DCDC2",
.id = WM8400_DCDC2,
.ops = &wm8400_dcdc_ops,
+ .enable_reg = WM8400_DCDC2_CONTROL_1,
+ .enable_mask = WM8400_DC1_ENA_MASK,
.n_voltages = WM8400_DC2_VSEL_MASK + 1,
+ .vsel_reg = WM8400_DCDC2_CONTROL_1,
+ .vsel_mask = WM8400_DC2_VSEL_MASK,
+ .min_uV = 850000,
+ .uV_step = 25000,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -329,6 +247,7 @@ static int __devinit wm8400_regulator_probe(struct platform_device *pdev)
config.dev = &pdev->dev;
config.init_data = pdev->dev.platform_data;
config.driver_data = wm8400;
+ config.regmap = wm8400->regmap;

rdev = regulator_register(&regulators[pdev->id], &config);
if (IS_ERR(rdev))
--
1.7.10

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/