diff options
author | James Ban <james.ban.opensource@diasemi.com> | 2014-08-27 11:47:07 +0900 |
---|---|---|
committer | Mark Brown <broonie@linaro.org> | 2014-08-27 10:27:56 +0100 |
commit | bf3baca6c54ce8a2f51687296f868dfe20d33f13 (patch) | |
tree | ca07588b6f8ede9628abd2c3f7bcc35befa59be6 /drivers | |
parent | 1d3e6a6985c14f0510ebbd81fb9e8c02b24f8791 (diff) |
regulator: da9211: support device tree
This is a patch for supporting device tree of DA9211/DA9213.
Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/regulator/da9211-regulator.c | 85 |
1 files changed, 78 insertions, 7 deletions
diff --git a/drivers/regulator/da9211-regulator.c b/drivers/regulator/da9211-regulator.c index a26f1d283c57..5aabbac1b524 100644 --- a/drivers/regulator/da9211-regulator.c +++ b/drivers/regulator/da9211-regulator.c @@ -24,6 +24,7 @@ #include <linux/regmap.h> #include <linux/irq.h> #include <linux/interrupt.h> +#include <linux/regulator/of_regulator.h> #include <linux/regulator/da9211.h> #include "da9211-regulator.h" @@ -236,6 +237,59 @@ static struct regulator_desc da9211_regulators[] = { DA9211_BUCK(BUCKB), }; +#ifdef CONFIG_OF +static struct of_regulator_match da9211_matches[] = { + [DA9211_ID_BUCKA] = { .name = "BUCKA" }, + [DA9211_ID_BUCKB] = { .name = "BUCKB" }, + }; + +static struct da9211_pdata *da9211_parse_regulators_dt( + struct device *dev) +{ + struct da9211_pdata *pdata; + struct device_node *node; + int i, num, n; + + node = of_get_child_by_name(dev->of_node, "regulators"); + if (!node) { + dev_err(dev, "regulators node not found\n"); + return ERR_PTR(-ENODEV); + } + + num = of_regulator_match(dev, node, da9211_matches, + ARRAY_SIZE(da9211_matches)); + of_node_put(node); + if (num < 0) { + dev_err(dev, "Failed to match regulators\n"); + return ERR_PTR(-EINVAL); + } + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); + + pdata->num_buck = num; + + n = 0; + for (i = 0; i < ARRAY_SIZE(da9211_matches); i++) { + if (!da9211_matches[i].init_data) + continue; + + pdata->init_data[n] = da9211_matches[i].init_data; + + n++; + }; + + return pdata; +} +#else +static struct da9211_pdata *da9211_parse_regulators_dt( + struct device *dev) +{ + return ERR_PTR(-ENODEV); +} +#endif + static irqreturn_t da9211_irq_handler(int irq, void *data) { struct da9211 *chip = data; @@ -306,7 +360,7 @@ static int da9211_regulator_init(struct da9211 *chip) } for (i = 0; i < chip->num_regulator; i++) { - config.init_data = &(chip->pdata->init_data[i]); + config.init_data = chip->pdata->init_data[i]; config.dev = chip->dev; config.driver_data = chip; config.regmap = chip->regmap; @@ -332,6 +386,21 @@ static int da9211_regulator_init(struct da9211 *chip) return 0; } + +static const struct i2c_device_id da9211_i2c_id[] = { + {"da9211", DA9211}, + {"da9213", DA9213}, + {}, +}; + +#ifdef CONFIG_OF +static const struct of_device_id da9211_dt_ids[] = { + { .compatible = "dlg,da9211", .data = &da9211_i2c_id[0] }, + { .compatible = "dlg,da9213", .data = &da9211_i2c_id[1] }, + {}, +}; +#endif + /* * I2C driver interface functions */ @@ -377,6 +446,14 @@ static int da9211_i2c_probe(struct i2c_client *i2c, return -ENODEV; } + if (!chip->pdata) + chip->pdata = da9211_parse_regulators_dt(chip->dev); + + if (IS_ERR(chip->pdata)) { + dev_err(chip->dev, "No regulators defined for the platform\n"); + return PTR_ERR(chip->pdata); + } + chip->chip_irq = i2c->irq; if (chip->chip_irq != 0) { @@ -401,12 +478,6 @@ static int da9211_i2c_probe(struct i2c_client *i2c, return ret; } -static const struct i2c_device_id da9211_i2c_id[] = { - {"da9211", DA9211}, - {"da9213", DA9213}, - {}, -}; - MODULE_DEVICE_TABLE(i2c, da9211_i2c_id); static struct i2c_driver da9211_regulator_driver = { |