diff options
author | Adam Thomson <Adam.Thomson.Opensource@diasemi.com> | 2014-02-06 18:03:13 +0000 |
---|---|---|
committer | Mark Brown <broonie@linaro.org> | 2014-02-07 16:30:02 +0000 |
commit | 8b61a28d616a34beaa425873acd37a8b12929455 (patch) | |
tree | 11b65f4c4ef83074a2af4ec7ef544f7b201728f4 /drivers/regulator/da9055-regulator.c | |
parent | 38dbfb59d1175ef458d006556061adeaa8751b72 (diff) |
regulator: da9055: Add DT support
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/da9055-regulator.c')
-rw-r--r-- | drivers/regulator/da9055-regulator.c | 69 |
1 files changed, 65 insertions, 4 deletions
diff --git a/drivers/regulator/da9055-regulator.c b/drivers/regulator/da9055-regulator.c index 7f340206d329..d90f785829c4 100644 --- a/drivers/regulator/da9055-regulator.c +++ b/drivers/regulator/da9055-regulator.c @@ -19,6 +19,8 @@ #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> +#include <linux/of.h> +#include <linux/regulator/of_regulator.h> #include <linux/mfd/da9055/core.h> #include <linux/mfd/da9055/reg.h> @@ -446,6 +448,9 @@ static int da9055_gpio_init(struct da9055_regulator *regulator, struct da9055_regulator_info *info = regulator->info; int ret = 0; + if (!pdata) + return 0; + if (pdata->gpio_ren && pdata->gpio_ren[id]) { char name[18]; int gpio_mux = pdata->gpio_ren[id]; @@ -530,6 +535,59 @@ static inline struct da9055_regulator_info *find_regulator_info(int id) return NULL; } +#ifdef CONFIG_OF +static struct of_regulator_match da9055_reg_matches[] = { + { .name = "BUCK1", }, + { .name = "BUCK2", }, + { .name = "LDO1", }, + { .name = "LDO2", }, + { .name = "LDO3", }, + { .name = "LDO4", }, + { .name = "LDO5", }, + { .name = "LDO6", }, +}; + +static int da9055_regulator_dt_init(struct platform_device *pdev, + struct da9055_regulator *regulator, + struct regulator_config *config, + int regid) +{ + struct device_node *nproot, *np; + int ret; + + nproot = of_node_get(pdev->dev.parent->of_node); + if (!nproot) + return -ENODEV; + + np = of_find_node_by_name(nproot, "regulators"); + if (!np) + return -ENODEV; + + ret = of_regulator_match(&pdev->dev, np, &da9055_reg_matches[regid], 1); + of_node_put(nproot); + if (ret < 0) { + dev_err(&pdev->dev, "Error matching regulator: %d\n", ret); + return -ENODEV; + } + + config->init_data = da9055_reg_matches[regid].init_data; + config->of_node = da9055_reg_matches[regid].of_node; + + if (!config->of_node) + return -ENODEV; + + return 0; +} +#else +static inline da9055_regulator_dt_init(struct platform_device *pdev, + struct da9055_regulator *regulator, + struct regulator_config *config, + int regid) +{ + return -ENODEV; +} +#endif /* CONFIG_OF */ + static int da9055_regulator_probe(struct platform_device *pdev) { struct regulator_config config = { }; @@ -538,9 +596,6 @@ static int da9055_regulator_probe(struct platform_device *pdev) struct da9055_pdata *pdata = dev_get_platdata(da9055->dev); int ret, irq; - if (pdata == NULL || pdata->regulators[pdev->id] == NULL) - return -ENODEV; - regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator), GFP_KERNEL); if (!regulator) @@ -557,8 +612,14 @@ static int da9055_regulator_probe(struct platform_device *pdev) config.driver_data = regulator; config.regmap = da9055->regmap; - if (pdata && pdata->regulators) + if (pdata && pdata->regulators) { config.init_data = pdata->regulators[pdev->id]; + } else { + ret = da9055_regulator_dt_init(pdev, regulator, &config, + pdev->id); + if (ret < 0) + return ret; + } ret = da9055_gpio_init(regulator, &config, pdata, pdev->id); if (ret < 0) |