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regulator: max77686: Implement .set_ramp_delay() callback

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This patch implements the .set_ramp_delay callback to set the ramp_delay on
hardware for BUCK2/3/4 if ramp_delay is set in regulator constraints.

This patch also do some cleaning work for unrequired members of
struct max77686_data.

Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Yadwinder Singh Brar 2012-06-20 10:50:51 +05:30 committed by Mark Brown
parent c59d2a6b20
commit f503071b03
1 changed files with 29 additions and 8 deletions
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37
drivers/regulator/max77686.c
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@ -65,11 +65,34 @@ enum max77686_ramp_rate {
}; };
struct max77686_data { struct max77686_data {
struct device *dev;
struct max77686_dev *iodev;
struct regulator_dev **rdev; struct regulator_dev **rdev;
}; };
static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
unsigned int ramp_value = RAMP_RATE_NO_CTRL;
switch (ramp_delay) {
case 1 ... 13750:
ramp_value = RAMP_RATE_13P75MV;
break;
case 13751 ... 27500:
ramp_value = RAMP_RATE_27P5MV;
break;
case 27501 ... 55000:
ramp_value = RAMP_RATE_55MV;
break;
case 55001 ... 100000:
break;
default:
pr_warn("%s: ramp_delay: %d not supported, setting 100000\n",
rdev->desc->name, ramp_delay);
}
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
MAX77686_RAMP_RATE_MASK, ramp_value << 6);
}
static struct regulator_ops max77686_ops = { static struct regulator_ops max77686_ops = {
.list_voltage = regulator_list_voltage_linear, .list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear, .map_voltage = regulator_map_voltage_linear,
@ -90,6 +113,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
.get_voltage_sel = regulator_get_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel, .set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = max77686_set_ramp_delay,
}; };
#define regulator_desc_ldo(num) { \ #define regulator_desc_ldo(num) { \
@ -238,20 +262,17 @@ static __devinit int max77686_pmic_probe(struct platform_device *pdev)
return -ENOMEM; return -ENOMEM;
rdev = max77686->rdev; rdev = max77686->rdev;
max77686->dev = &pdev->dev; config.dev = &pdev->dev;
max77686->iodev = iodev; config.regmap = iodev->regmap;
platform_set_drvdata(pdev, max77686); platform_set_drvdata(pdev, max77686);
for (i = 0; i < MAX77686_REGULATORS; i++) { for (i = 0; i < MAX77686_REGULATORS; i++) {
config.dev = max77686->dev;
config.regmap = iodev->regmap;
config.driver_data = max77686;
config.init_data = pdata->regulators[i].initdata; config.init_data = pdata->regulators[i].initdata;
rdev[i] = regulator_register(&regulators[i], &config); rdev[i] = regulator_register(&regulators[i], &config);
if (IS_ERR(rdev[i])) { if (IS_ERR(rdev[i])) {
ret = PTR_ERR(rdev[i]); ret = PTR_ERR(rdev[i]);
dev_err(max77686->dev, dev_err(&pdev->dev,
"regulator init failed for %d\n", i); "regulator init failed for %d\n", i);
rdev[i] = NULL; rdev[i] = NULL;
goto err; goto err;