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regulator: da9121: Add device variants 

Add basic support for configuration to reference variants of this device,
and track the selected variant within the driver.

Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
Link: https://lore.kernel.org/r/aaabd3063593e5172fa6b605884d475df64e6d65.1606755367.git.Adam.Ward.opensource@diasemi.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Adam Ward 2020-11-30 16:59:07 +00:00 committed by Mark Brown
parent 86f162c91f
commit f3fbd5566f
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 43 additions and 3 deletions
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46
drivers/regulator/da9121-regulator.c
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@ -11,6 +11,12 @@
#include <linux/i2c.h>
#include "da9121-regulator.h"
/* Chip data */
struct da9121 {
struct device *dev;
int variant_id;
};
#define DA9121_MIN_MV 300
#define DA9121_MAX_MV 1900
#define DA9121_STEP_MV 10
@ -53,19 +59,46 @@ static const struct regulator_desc da9121_reg = {
};
static const struct of_device_id da9121_dt_ids[] = {
{ .compatible = "dlg,da9121", },
{ .compatible = "dlg,da9121", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
{ .compatible = "dlg,da9130", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
{ .compatible = "dlg,da9217", .data = (void *) DA9121_TYPE_DA9217 },
{ .compatible = "dlg,da9122", .data = (void *) DA9121_TYPE_DA9122_DA9131 },
{ .compatible = "dlg,da9131", .data = (void *) DA9121_TYPE_DA9122_DA9131 },
{ .compatible = "dlg,da9220", .data = (void *) DA9121_TYPE_DA9220_DA9132 },
{ .compatible = "dlg,da9132", .data = (void *) DA9121_TYPE_DA9220_DA9132 },
{ }
};
MODULE_DEVICE_TABLE(of, da9121_dt_ids);
static inline int da9121_of_get_id(struct device *dev)
{
const struct of_device_id *id = of_match_device(da9121_dt_ids, dev);
if (!id) {
dev_err(dev, "%s: Failed\n", __func__);
return -EINVAL;
}
return (uintptr_t)id->data;
}
static int da9121_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct da9121 *chip;
int ret = 0;
struct device *dev = &i2c->dev;
struct regulator_config config = {};
struct regulator_dev *rdev;
struct regmap *regmap;
chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL);
if (!chip) {
ret = -ENOMEM;
goto error;
}
chip->variant_id = da9121_of_get_id(&i2c->dev);
regmap = devm_regmap_init_i2c(i2c, &da9121_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
@ -80,11 +113,18 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
return PTR_ERR(rdev);
}
return 0;
error:
return ret;
}
static const struct i2c_device_id da9121_i2c_id[] = {
{ "da9121", 0 },
{"da9121", DA9121_TYPE_DA9121_DA9130},
{"da9130", DA9121_TYPE_DA9121_DA9130},
{"da9217", DA9121_TYPE_DA9217},
{"da9122", DA9121_TYPE_DA9122_DA9131},
{"da9131", DA9121_TYPE_DA9122_DA9131},
{"da9220", DA9121_TYPE_DA9220_DA9132},
{"da9132", DA9121_TYPE_DA9220_DA9132},
{},
};
MODULE_DEVICE_TABLE(i2c, da9121_i2c_id);