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authorMark Brown <broonie@linaro.org>2013-07-01 11:17:09 +0100
committerMark Brown <broonie@linaro.org>2013-07-01 11:17:09 +0100
commit7455c7f4ac0e99e6c2af6b5387616c985814ee89 (patch)
treeabf6cd3734e9c19e44c9aa0d84f1aa82cc315504 /drivers/regulator
parentbc830f352e48d24e5c56c6af62ad41829c96015e (diff)
parent00fd6e6153100ae868975cab67f02df6f16343eb (diff)
Merge remote-tracking branch 'regulator/topic/lp872x' into regulator-next
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/lp872x.c116
1 files changed, 114 insertions, 2 deletions
diff --git a/drivers/regulator/lp872x.c b/drivers/regulator/lp872x.c
index f5fc4a142cd..b16336bcd4d 100644
--- a/drivers/regulator/lp872x.c
+++ b/drivers/regulator/lp872x.c
@@ -18,6 +18,9 @@
#include <linux/regulator/lp872x.h>
#include <linux/regulator/driver.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/regulator/of_regulator.h>
/* Registers : LP8720/8725 shared */
#define LP872X_GENERAL_CFG 0x00
@@ -723,8 +726,8 @@ static int lp872x_init_dvs(struct lp872x *lp)
gpio = dvs->gpio;
if (!gpio_is_valid(gpio)) {
- dev_err(lp->dev, "invalid gpio: %d\n", gpio);
- return -EINVAL;
+ dev_warn(lp->dev, "invalid gpio: %d\n", gpio);
+ goto set_default_dvs_mode;
}
pinstate = dvs->init_state;
@@ -829,6 +832,103 @@ static const struct regmap_config lp872x_regmap_config = {
.max_register = MAX_REGISTERS,
};
+#ifdef CONFIG_OF
+
+#define LP872X_VALID_OPMODE (REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL)
+
+static struct of_regulator_match lp8720_matches[] = {
+ { .name = "ldo1", .driver_data = (void *)LP8720_ID_LDO1, },
+ { .name = "ldo2", .driver_data = (void *)LP8720_ID_LDO2, },
+ { .name = "ldo3", .driver_data = (void *)LP8720_ID_LDO3, },
+ { .name = "ldo4", .driver_data = (void *)LP8720_ID_LDO4, },
+ { .name = "ldo5", .driver_data = (void *)LP8720_ID_LDO5, },
+ { .name = "buck", .driver_data = (void *)LP8720_ID_BUCK, },
+};
+
+static struct of_regulator_match lp8725_matches[] = {
+ { .name = "ldo1", .driver_data = (void *)LP8725_ID_LDO1, },
+ { .name = "ldo2", .driver_data = (void *)LP8725_ID_LDO2, },
+ { .name = "ldo3", .driver_data = (void *)LP8725_ID_LDO3, },
+ { .name = "ldo4", .driver_data = (void *)LP8725_ID_LDO4, },
+ { .name = "ldo5", .driver_data = (void *)LP8725_ID_LDO5, },
+ { .name = "lilo1", .driver_data = (void *)LP8725_ID_LILO1, },
+ { .name = "lilo2", .driver_data = (void *)LP8725_ID_LILO2, },
+ { .name = "buck1", .driver_data = (void *)LP8725_ID_BUCK1, },
+ { .name = "buck2", .driver_data = (void *)LP8725_ID_BUCK2, },
+};
+
+static struct lp872x_platform_data
+*lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which)
+{
+ struct device_node *np = dev->of_node;
+ struct lp872x_platform_data *pdata;
+ struct of_regulator_match *match;
+ struct regulator_init_data *d;
+ int num_matches;
+ int count;
+ int i;
+ u8 dvs_state;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ goto out;
+
+ of_property_read_u8(np, "ti,general-config", &pdata->general_config);
+ if (of_find_property(np, "ti,update-config", NULL))
+ pdata->update_config = true;
+
+ pdata->dvs = devm_kzalloc(dev, sizeof(struct lp872x_dvs), GFP_KERNEL);
+ if (!pdata->dvs)
+ goto out;
+
+ pdata->dvs->gpio = of_get_named_gpio(np, "ti,dvs-gpio", 0);
+ of_property_read_u8(np, "ti,dvs-vsel", (u8 *)&pdata->dvs->vsel);
+ of_property_read_u8(np, "ti,dvs-state", &dvs_state);
+ pdata->dvs->init_state = dvs_state ? DVS_HIGH : DVS_LOW;
+
+ if (of_get_child_count(np) == 0)
+ goto out;
+
+ switch (which) {
+ case LP8720:
+ match = lp8720_matches;
+ num_matches = ARRAY_SIZE(lp8720_matches);
+ break;
+ case LP8725:
+ match = lp8725_matches;
+ num_matches = ARRAY_SIZE(lp8725_matches);
+ break;
+ default:
+ goto out;
+ }
+
+ count = of_regulator_match(dev, np, match, num_matches);
+ if (count <= 0)
+ goto out;
+
+ for (i = 0; i < num_matches; i++) {
+ pdata->regulator_data[i].id = (int)match[i].driver_data;
+ pdata->regulator_data[i].init_data = match[i].init_data;
+
+ /* Operation mode configuration for buck/buck1/buck2 */
+ if (strncmp(match[i].name, "buck", 4))
+ continue;
+
+ d = pdata->regulator_data[i].init_data;
+ d->constraints.valid_modes_mask |= LP872X_VALID_OPMODE;
+ d->constraints.valid_ops_mask |= REGULATOR_CHANGE_MODE;
+ }
+out:
+ return pdata;
+}
+#else
+static struct lp872x_platform_data
+*lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which)
+{
+ return NULL;
+}
+#endif
+
static int lp872x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
{
struct lp872x *lp;
@@ -838,6 +938,10 @@ static int lp872x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
[LP8725] = LP8725_NUM_REGULATORS,
};
+ if (cl->dev.of_node)
+ cl->dev.platform_data = lp872x_populate_pdata_from_dt(&cl->dev,
+ (enum lp872x_id)id->driver_data);
+
lp = devm_kzalloc(&cl->dev, sizeof(struct lp872x), GFP_KERNEL);
if (!lp)
goto err_mem;
@@ -882,6 +986,13 @@ static int lp872x_remove(struct i2c_client *cl)
return 0;
}
+static const struct of_device_id lp872x_dt_ids[] = {
+ { .compatible = "ti,lp8720", },
+ { .compatible = "ti,lp8725", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lp872x_dt_ids);
+
static const struct i2c_device_id lp872x_ids[] = {
{"lp8720", LP8720},
{"lp8725", LP8725},
@@ -893,6 +1004,7 @@ static struct i2c_driver lp872x_driver = {
.driver = {
.name = "lp872x",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(lp872x_dt_ids),
},
.probe = lp872x_probe,
.remove = lp872x_remove,