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Subject[PATCH V4 03/10] 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>
---
drivers/regulator/da9121-regulator.c | 46 +++++++++++++++++++++++++++++++++---
1 file changed, 43 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index c11fe04..5bebdb2 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -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 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);
--
1.9.1
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