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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>
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parent
ed801b4046
commit
91f23d8fb6
1 changed files with 46 additions and 4 deletions
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@ -18,6 +18,8 @@
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/of_device.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/regmap.h>
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@ -252,9 +254,39 @@ static struct regmap_config fan53555_regmap_config = {
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.val_bits = 8,
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};
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static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev,
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struct device_node *np)
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{
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struct fan53555_platform_data *pdata;
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int ret;
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u32 tmp;
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pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
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if (!pdata)
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return NULL;
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pdata->regulator = of_get_regulator_init_data(dev, np);
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ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",
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&tmp);
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if (!ret)
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pdata->sleep_vsel_id = tmp;
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return pdata;
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}
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static const struct of_device_id fan53555_dt_ids[] = {
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{
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.compatible = "fcs,fan53555",
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},
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{ }
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};
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MODULE_DEVICE_TABLE(of, fan53555_dt_ids);
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static int fan53555_regulator_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct device_node *np = client->dev.of_node;
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struct fan53555_device_info *di;
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struct fan53555_platform_data *pdata;
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struct regulator_config config = { };
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@ -262,6 +294,9 @@ static int fan53555_regulator_probe(struct i2c_client *client,
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int ret;
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pdata = dev_get_platdata(&client->dev);
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if (!pdata)
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pdata = fan53555_parse_dt(&client->dev, np);
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if (!pdata || !pdata->regulator) {
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dev_err(&client->dev, "Platform data not found!\n");
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return -ENODEV;
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@ -272,11 +307,15 @@ static int fan53555_regulator_probe(struct i2c_client *client,
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if (!di)
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return -ENOMEM;
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if (!client->dev.of_node) {
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/* if no ramp constraint set, get the pdata ramp_delay */
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if (!di->regulator->constraints.ramp_delay) {
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int slew_idx = (pdata->slew_rate & 0x7) ? pdata->slew_rate : 0;
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int slew_idx = (pdata->slew_rate & 0x7)
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? pdata->slew_rate : 0;
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di->regulator->constraints.ramp_delay = slew_rates[slew_idx];
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di->regulator->constraints.ramp_delay
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= slew_rates[slew_idx];
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}
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}
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di->regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
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@ -314,6 +353,8 @@ static int fan53555_regulator_probe(struct i2c_client *client,
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config.init_data = di->regulator;
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config.regmap = di->regmap;
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config.driver_data = di;
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config.of_node = np;
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ret = fan53555_regulator_register(di, &config);
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if (ret < 0)
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dev_err(&client->dev, "Failed to register regulator!\n");
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@ -329,6 +370,7 @@ static const struct i2c_device_id fan53555_id[] = {
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static struct i2c_driver fan53555_regulator_driver = {
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.driver = {
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.name = "fan53555-regulator",
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.of_match_table = of_match_ptr(fan53555_dt_ids),
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},
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.probe = fan53555_regulator_probe,
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.id_table = fan53555_id,
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