diff options
Diffstat (limited to 'drivers/regulator/arizona-micsupp.c')
| -rw-r--r-- | drivers/regulator/arizona-micsupp.c | 94 |
1 files changed, 50 insertions, 44 deletions
diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c index fd3154d8690..ce9aca5f8ee 100644 --- a/drivers/regulator/arizona-micsupp.c +++ b/drivers/regulator/arizona-micsupp.c @@ -16,9 +16,11 @@ #include <linux/init.h> #include <linux/bitops.h> #include <linux/err.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> #include <linux/gpio.h> #include <linux/slab.h> #include <linux/workqueue.h> @@ -28,8 +30,6 @@ #include <linux/mfd/arizona/pdata.h> #include <linux/mfd/arizona/registers.h> -#define ARIZONA_MICSUPP_MAX_SELECTOR 0x1f - struct arizona_micsupp { struct regulator_dev *regulator; struct arizona *arizona; @@ -40,42 +40,6 @@ struct arizona_micsupp { struct work_struct check_cp_work; }; -static int arizona_micsupp_list_voltage(struct regulator_dev *rdev, - unsigned int selector) -{ - if (selector > ARIZONA_MICSUPP_MAX_SELECTOR) - return -EINVAL; - - if (selector == ARIZONA_MICSUPP_MAX_SELECTOR) - return 3300000; - else - return (selector * 50000) + 1700000; -} - -static int arizona_micsupp_map_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) -{ - unsigned int voltage; - int selector; - - if (min_uV < 1700000) - min_uV = 1700000; - - if (min_uV > 3200000) - selector = ARIZONA_MICSUPP_MAX_SELECTOR; - else - selector = DIV_ROUND_UP(min_uV - 1700000, 50000); - - if (selector < 0) - return -EINVAL; - - voltage = arizona_micsupp_list_voltage(rdev, selector); - if (voltage < min_uV || voltage > max_uV) - return -EINVAL; - - return selector; -} - static void arizona_micsupp_check_cp(struct work_struct *work) { struct arizona_micsupp *micsupp = @@ -145,8 +109,8 @@ static struct regulator_ops arizona_micsupp_ops = { .disable = arizona_micsupp_disable, .is_enabled = regulator_is_enabled_regmap, - .list_voltage = arizona_micsupp_list_voltage, - .map_voltage = arizona_micsupp_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, @@ -155,11 +119,16 @@ static struct regulator_ops arizona_micsupp_ops = { .set_bypass = arizona_micsupp_set_bypass, }; +static const struct regulator_linear_range arizona_micsupp_ranges[] = { + REGULATOR_LINEAR_RANGE(1700000, 0, 0x1e, 50000), + REGULATOR_LINEAR_RANGE(3300000, 0x1f, 0x1f, 0), +}; + static const struct regulator_desc arizona_micsupp = { .name = "MICVDD", .supply_name = "CPVDD", .type = REGULATOR_VOLTAGE, - .n_voltages = ARIZONA_MICSUPP_MAX_SELECTOR + 1, + .n_voltages = 32, .ops = &arizona_micsupp_ops, .vsel_reg = ARIZONA_LDO2_CONTROL_1, @@ -169,6 +138,9 @@ static const struct regulator_desc arizona_micsupp = { .bypass_reg = ARIZONA_MIC_CHARGE_PUMP_1, .bypass_mask = ARIZONA_CPMIC_BYPASS, + .linear_ranges = arizona_micsupp_ranges, + .n_linear_ranges = ARRAY_SIZE(arizona_micsupp_ranges), + .enable_time = 3000, .owner = THIS_MODULE, @@ -225,6 +197,32 @@ static const struct regulator_init_data arizona_micsupp_ext_default = { .num_consumer_supplies = 1, }; +static int arizona_micsupp_of_get_pdata(struct arizona *arizona, + struct regulator_config *config) +{ + struct arizona_pdata *pdata = &arizona->pdata; + struct arizona_micsupp *micsupp = config->driver_data; + struct device_node *np; + struct regulator_init_data *init_data; + + np = of_get_child_by_name(arizona->dev->of_node, "micvdd"); + + if (np) { + config->of_node = np; + + init_data = of_get_regulator_init_data(arizona->dev, np); + + if (init_data) { + init_data->consumer_supplies = &micsupp->supply; + init_data->num_consumer_supplies = 1; + + pdata->micvdd = init_data; + } + } + + return 0; +} + static int arizona_micsupp_probe(struct platform_device *pdev) { struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); @@ -234,10 +232,8 @@ static int arizona_micsupp_probe(struct platform_device *pdev) int ret; micsupp = devm_kzalloc(&pdev->dev, sizeof(*micsupp), GFP_KERNEL); - if (micsupp == NULL) { - dev_err(&pdev->dev, "Unable to allocate private data\n"); + if (!micsupp) return -ENOMEM; - } micsupp->arizona = arizona; INIT_WORK(&micsupp->check_cp_work, arizona_micsupp_check_cp); @@ -266,6 +262,14 @@ static int arizona_micsupp_probe(struct platform_device *pdev) config.driver_data = micsupp; config.regmap = arizona->regmap; + if (IS_ENABLED(CONFIG_OF)) { + if (!dev_get_platdata(arizona->dev)) { + ret = arizona_micsupp_of_get_pdata(arizona, &config); + if (ret < 0) + return ret; + } + } + if (arizona->pdata.micvdd) config.init_data = arizona->pdata.micvdd; else @@ -285,6 +289,8 @@ static int arizona_micsupp_probe(struct platform_device *pdev) return ret; } + of_node_put(config.of_node); + platform_set_drvdata(pdev, micsupp); return 0; |