From 90923351d480fffd0d24646db83f6f8315eed0d9 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 18 Jun 2011 01:18:51 +0100 Subject: [PATCH] regulator: Convert tps65023 to use regmap API Signed-off-by: Mark Brown Acked-by: Liam Girdwood Acked-by: Grant Likely --- drivers/regulator/Kconfig | 1 + drivers/regulator/tps65023-regulator.c | 97 +++++++------------------- 2 files changed, 28 insertions(+), 70 deletions(-) diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index d7ed20f293d7..118eb213eb3a 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -235,6 +235,7 @@ config REGULATOR_TPS6105X config REGULATOR_TPS65023 tristate "TI TPS65023 Power regulators" depends on I2C + select REGMAP_I2C help This driver supports TPS65023 voltage regulator chips. TPS65023 provides three step-down converters and two general-purpose LDO voltage regulators. diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c index fbddc15e1811..701a5900f83f 100644 --- a/drivers/regulator/tps65023-regulator.c +++ b/drivers/regulator/tps65023-regulator.c @@ -25,6 +25,7 @@ #include #include #include +#include /* 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; -- 2.20.1