diff options
| author | Heiko Stuebner <heiko@sntech.de> | 2014-09-16 21:22:53 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-09-17 01:09:31 +0200 |
| commit | 91f23d8fb67c90a50676e4db9260a21647ef753f (patch) | |
| tree | 9291ab0322625c34576b2e474253fb6f954433d2 /drivers/regulator | |
| parent | regulator: add devicetree bindings for Fairchild FAN53555 regulators (diff) | |
| download | linux-91f23d8fb67c90a50676e4db9260a21647ef753f.tar.xz linux-91f23d8fb67c90a50676e4db9260a21647ef753f.zip | |
regulator: fan53555: add devicetree support
Add the ability to parse regulator-data from the devicetree.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/fan53555.c | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c index 5808435cfae0..fa29ba052841 100644 --- a/drivers/regulator/fan53555.c +++ b/drivers/regulator/fan53555.c @@ -18,6 +18,8 @@ #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> +#include <linux/of_device.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/regmap.h> @@ -252,9 +254,39 @@ static struct regmap_config fan53555_regmap_config = { .val_bits = 8, }; +static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev, + struct device_node *np) +{ + struct fan53555_platform_data *pdata; + int ret; + u32 tmp; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + pdata->regulator = of_get_regulator_init_data(dev, np); + + ret = of_property_read_u32(np, "fcs,suspend-voltage-selector", + &tmp); + if (!ret) + pdata->sleep_vsel_id = tmp; + + return pdata; +} + +static const struct of_device_id fan53555_dt_ids[] = { + { + .compatible = "fcs,fan53555", + }, + { } +}; +MODULE_DEVICE_TABLE(of, fan53555_dt_ids); + static int fan53555_regulator_probe(struct i2c_client *client, const struct i2c_device_id *id) { + struct device_node *np = client->dev.of_node; struct fan53555_device_info *di; struct fan53555_platform_data *pdata; struct regulator_config config = { }; @@ -262,6 +294,9 @@ static int fan53555_regulator_probe(struct i2c_client *client, int ret; pdata = dev_get_platdata(&client->dev); + if (!pdata) + pdata = fan53555_parse_dt(&client->dev, np); + if (!pdata || !pdata->regulator) { dev_err(&client->dev, "Platform data not found!\n"); return -ENODEV; @@ -272,11 +307,15 @@ static int fan53555_regulator_probe(struct i2c_client *client, if (!di) return -ENOMEM; - /* if no ramp constraint set, get the pdata ramp_delay */ - if (!di->regulator->constraints.ramp_delay) { - int slew_idx = (pdata->slew_rate & 0x7) ? pdata->slew_rate : 0; + if (!client->dev.of_node) { + /* if no ramp constraint set, get the pdata ramp_delay */ + if (!di->regulator->constraints.ramp_delay) { + int slew_idx = (pdata->slew_rate & 0x7) + ? pdata->slew_rate : 0; - di->regulator->constraints.ramp_delay = slew_rates[slew_idx]; + di->regulator->constraints.ramp_delay + = slew_rates[slew_idx]; + } } di->regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config); @@ -314,6 +353,8 @@ static int fan53555_regulator_probe(struct i2c_client *client, config.init_data = di->regulator; config.regmap = di->regmap; config.driver_data = di; + config.of_node = np; + ret = fan53555_regulator_register(di, &config); if (ret < 0) dev_err(&client->dev, "Failed to register regulator!\n"); @@ -329,6 +370,7 @@ static const struct i2c_device_id fan53555_id[] = { static struct i2c_driver fan53555_regulator_driver = { .driver = { .name = "fan53555-regulator", + .of_match_table = of_match_ptr(fan53555_dt_ids), }, .probe = fan53555_regulator_probe, .id_table = fan53555_id, |