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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-06-18 01:18:51 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-07-23 07:57:02 +0100
commit90923351d480fffd0d24646db83f6f8315eed0d9 (patch)
treee6513c1dbae85bdfc87208694d4294a850acfce9 /drivers/regulator/tps65023-regulator.c
parenta676f083068b08e676c557279effbd7f4d590812 (diff)
downloadlinaro-lsk-90923351d480fffd0d24646db83f6f8315eed0d9.tar.gz
regulator: Convert tps65023 to use regmap API
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com> Acked-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/regulator/tps65023-regulator.c')
-rw-r--r--drivers/regulator/tps65023-regulator.c97
1 files changed, 27 insertions, 70 deletions
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
index fbddc15e181..701a5900f83 100644
--- a/drivers/regulator/tps65023-regulator.c
+++ b/drivers/regulator/tps65023-regulator.c
@@ -25,6 +25,7 @@
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
+#include <linux/regmap.h>
/* Register definitions */
#define TPS65023_REG_VERSION 0
@@ -125,93 +126,35 @@ struct tps_pmic {
struct i2c_client *client;
struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
const struct tps_info *info[TPS65023_NUM_REGULATOR];
- struct mutex io_lock;
+ struct regmap *regmap;
};
-static inline int tps_65023_read(struct tps_pmic *tps, u8 reg)
-{
- return i2c_smbus_read_byte_data(tps->client, reg);
-}
-
-static inline int tps_65023_write(struct tps_pmic *tps, u8 reg, u8 val)
-{
- return i2c_smbus_write_byte_data(tps->client, reg, val);
-}
-
static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask)
{
- int err, data;
-
- mutex_lock(&tps->io_lock);
-
- data = tps_65023_read(tps, reg);
- if (data < 0) {
- dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
- err = data;
- goto out;
- }
-
- data |= mask;
- err = tps_65023_write(tps, reg, data);
- if (err)
- dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
-
-out:
- mutex_unlock(&tps->io_lock);
- return err;
+ return regmap_update_bits(tps->regmap, reg, mask, mask);
}
static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask)
{
- int err, data;
-
- mutex_lock(&tps->io_lock);
-
- data = tps_65023_read(tps, reg);
- if (data < 0) {
- dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
- err = data;
- goto out;
- }
-
- data &= ~mask;
-
- err = tps_65023_write(tps, reg, data);
- if (err)
- dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
-
-out:
- mutex_unlock(&tps->io_lock);
- return err;
-
+ return regmap_update_bits(tps->regmap, reg, mask, 0);
}
static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg)
{
- int data;
+ unsigned int val;
+ int ret;
- mutex_lock(&tps->io_lock);
+ ret = regmap_read(tps->regmap, reg, &val);
- data = tps_65023_read(tps, reg);
- if (data < 0)
- dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
-
- mutex_unlock(&tps->io_lock);
- return data;
+ if (ret != 0)
+ return ret;
+ else
+ return val;
}
static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val)
{
- int err;
-
- mutex_lock(&tps->io_lock);
-
- err = tps_65023_write(tps, reg, val);
- if (err < 0)
- dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
-
- mutex_unlock(&tps->io_lock);
- return err;
+ return regmap_write(tps->regmap, reg, val);
}
static int tps65023_dcdc_is_enabled(struct regulator_dev *dev)
@@ -463,6 +406,11 @@ static struct regulator_ops tps65023_ldo_ops = {
.list_voltage = tps65023_ldo_list_voltage,
};
+static struct regmap_config tps65023_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
static int __devinit tps_65023_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -488,7 +436,13 @@ static int __devinit tps_65023_probe(struct i2c_client *client,
if (!tps)
return -ENOMEM;
- mutex_init(&tps->io_lock);
+ tps->regmap = regmap_init_i2c(client, &tps65023_regmap_config);
+ if (IS_ERR(tps->regmap)) {
+ error = PTR_ERR(tps->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ error);
+ goto fail_alloc;
+ }
/* common for all regulators */
tps->client = client;
@@ -527,6 +481,8 @@ static int __devinit tps_65023_probe(struct i2c_client *client,
while (--i >= 0)
regulator_unregister(tps->rdev[i]);
+ regmap_exit(tps->regmap);
+ fail_alloc:
kfree(tps);
return error;
}
@@ -545,6 +501,7 @@ static int __devexit tps_65023_remove(struct i2c_client *client)
for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
regulator_unregister(tps->rdev[i]);
+ regmap_exit(tps->regmap);
kfree(tps);
return 0;