From 15f2303eb2562379e772651494dd55743a5356e0 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 8 May 2012 17:05:58 +0530 Subject: regulator: tps62360: fix stylistic issue and optimize code Fix multiple stylistic issue like: - The print message should be not break into multiple line. - line gap after variable declaration and statement. - checkpatch error. - some typo. Some enhancement on error message printing to print error value also along with proper text. Avoid voltage_base conversion to microvolts every time. Put init functions in init section. Using efficient function inplace of calling multiple function to reduce the code size. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown (cherry picked from commit 2935fb18aa1e75e6afaab3303cdd1a4ac62be63e) Change-Id: I988938f8f8cc6fb5355e32bd6ac25d95db94913c Signed-off-by: Laxman Dewangan Reviewed-on: http://git-master/r/105831 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Bitan Biswas GVS: Gerrit_Virtual_Submit --- drivers/regulator/tps62360-regulator.c | 131 +++++++++++++++------------------ 1 file changed, 60 insertions(+), 71 deletions(-) (limited to 'drivers') diff --git a/drivers/regulator/tps62360-regulator.c b/drivers/regulator/tps62360-regulator.c index 117c654388a1..bc58365fa151 100644 --- a/drivers/regulator/tps62360-regulator.c +++ b/drivers/regulator/tps62360-regulator.c @@ -48,10 +48,10 @@ enum chips {TPS62360, TPS62361, TPS62362, TPS62363}; -#define TPS62360_BASE_VOLTAGE 770 +#define TPS62360_BASE_VOLTAGE 770000 #define TPS62360_N_VOLTAGES 64 -#define TPS62361_BASE_VOLTAGE 500 +#define TPS62361_BASE_VOLTAGE 500000 #define TPS62361_N_VOLTAGES 128 /* tps 62360 chip information */ @@ -98,6 +98,7 @@ static bool find_voltage_set_register(struct tps62360_chip *tps, bool found = false; int new_vset_reg = tps->lru_index[3]; int found_index = 3; + for (i = 0; i < 4; ++i) { if (tps->curr_vset_vsel[tps->lru_index[i]] == req_vsel) { new_vset_reg = tps->lru_index[i]; @@ -125,8 +126,8 @@ static int tps62360_dcdc_get_voltage_sel(struct regulator_dev *dev) ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data); if (ret < 0) { - dev_err(tps->dev, "%s: Error in reading register %d\n", - __func__, REG_VSET0 + tps->curr_vset_id); + dev_err(tps->dev, "%s(): register %d read failed with err %d\n", + __func__, REG_VSET0 + tps->curr_vset_id, ret); return ret; } vsel = (int)data & tps->voltage_reg_mask; @@ -142,17 +143,13 @@ static int tps62360_dcdc_set_voltage(struct regulator_dev *dev, bool found = false; int new_vset_id = tps->curr_vset_id; - if (max_uV < min_uV) - return -EINVAL; - - if (min_uV > - ((tps->voltage_base + (tps->desc.n_voltages - 1) * 10) * 1000)) + if ((max_uV < min_uV) || (max_uV < tps->voltage_base)) return -EINVAL; - if (max_uV < tps->voltage_base * 1000) + if (min_uV > (tps->voltage_base + (tps->desc.n_voltages - 1) * 10000)) return -EINVAL; - vsel = DIV_ROUND_UP(min_uV - (tps->voltage_base * 1000), 10000); + vsel = DIV_ROUND_UP(min_uV - tps->voltage_base, 10000); if (selector) *selector = (vsel & tps->voltage_reg_mask); @@ -167,8 +164,9 @@ static int tps62360_dcdc_set_voltage(struct regulator_dev *dev, ret = regmap_update_bits(tps->regmap, REG_VSET0 + new_vset_id, tps->voltage_reg_mask, vsel); if (ret < 0) { - dev_err(tps->dev, "%s: Error in updating register %d\n", - __func__, REG_VSET0 + new_vset_id); + dev_err(tps->dev, + "%s(): register %d update failed with err %d\n", + __func__, REG_VSET0 + new_vset_id, ret); return ret; } tps->curr_vset_id = new_vset_id; @@ -177,8 +175,7 @@ static int tps62360_dcdc_set_voltage(struct regulator_dev *dev, /* Select proper VSET register vio gpios */ if (tps->valid_gpios) { - gpio_set_value_cansleep(tps->vsel0_gpio, - new_vset_id & 0x1); + gpio_set_value_cansleep(tps->vsel0_gpio, new_vset_id & 0x1); gpio_set_value_cansleep(tps->vsel1_gpio, (new_vset_id >> 1) & 0x1); } @@ -192,7 +189,8 @@ static int tps62360_dcdc_list_voltage(struct regulator_dev *dev, if (selector >= tps->desc.n_voltages) return -EINVAL; - return (tps->voltage_base + selector * 10) * 1000; + + return tps->voltage_base + selector * 10000; } static int tps62360_set_voltage_time_sel(struct regulator_dev *rdev, @@ -219,49 +217,44 @@ static struct regulator_ops tps62360_dcdc_ops = { .set_voltage_time_sel = tps62360_set_voltage_time_sel, }; -static int tps62360_init_force_pwm(struct tps62360_chip *tps, +static int __devinit tps62360_init_force_pwm(struct tps62360_chip *tps, struct tps62360_regulator_platform_data *pdata, int vset_id) { - unsigned int data; int ret; - ret = regmap_read(tps->regmap, REG_VSET0 + vset_id, &data); - if (ret < 0) { - dev_err(tps->dev, "%s() fails in writing reg %d\n", - __func__, REG_VSET0 + vset_id); - return ret; - } - tps->curr_vset_vsel[vset_id] = data & tps->voltage_reg_mask; + int bit = 0; + if (pdata->en_force_pwm) - data |= BIT(7); - else - data &= ~BIT(7); - ret = regmap_write(tps->regmap, REG_VSET0 + vset_id, data); + bit = BIT(7); + + ret = regmap_update_bits(tps->regmap, REG_VSET0 + vset_id, BIT(7), bit); if (ret < 0) - dev_err(tps->dev, "%s() fails in writing reg %d\n", - __func__, REG_VSET0 + vset_id); + dev_err(tps->dev, + "%s(): register %d update failed with err %d\n", + __func__, REG_VSET0 + vset_id, ret); return ret; } -static int tps62360_init_dcdc(struct tps62360_chip *tps, +static int __devinit tps62360_init_dcdc(struct tps62360_chip *tps, struct tps62360_regulator_platform_data *pdata) { int ret; int i; unsigned int ramp_ctrl; - /* Initailize internal pull up/down control */ + /* Initialize internal pull up/down control */ if (tps->en_internal_pulldn) ret = regmap_write(tps->regmap, REG_CONTROL, 0xE0); else ret = regmap_write(tps->regmap, REG_CONTROL, 0x0); if (ret < 0) { - dev_err(tps->dev, "%s() fails in writing reg %d\n", - __func__, REG_CONTROL); + dev_err(tps->dev, + "%s(): register %d write failed with err %d\n", + __func__, REG_CONTROL, ret); return ret; } - /* Initailize force PWM mode */ + /* Initialize force PWM mode */ if (tps->valid_gpios) { for (i = 0; i < 4; ++i) { ret = tps62360_init_force_pwm(tps, pdata, i); @@ -277,16 +270,18 @@ static int tps62360_init_dcdc(struct tps62360_chip *tps, /* Reset output discharge path to reduce power consumption */ ret = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), 0); if (ret < 0) { - dev_err(tps->dev, "%s() fails in updating reg %d\n", - __func__, REG_RAMPCTRL); + dev_err(tps->dev, + "%s(): register %d update failed with err %d\n", + __func__, REG_RAMPCTRL, ret); return ret; } /* Get ramp value from ramp control register */ ret = regmap_read(tps->regmap, REG_RAMPCTRL, &ramp_ctrl); if (ret < 0) { - dev_err(tps->dev, "%s() fails in reading reg %d\n", - __func__, REG_RAMPCTRL); + dev_err(tps->dev, + "%s(): register %d read failed with err %d\n", + __func__, REG_RAMPCTRL, ret); return ret; } ramp_ctrl = (ramp_ctrl >> 4) & 0x7; @@ -314,14 +309,14 @@ static int __devinit tps62360_probe(struct i2c_client *client, pdata = client->dev.platform_data; if (!pdata) { - dev_err(&client->dev, "%s() Err: Platform data not found\n", + dev_err(&client->dev, "%s(): Platform data not found\n", __func__); return -EIO; } tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); if (!tps) { - dev_err(&client->dev, "%s() Err: Memory allocation fails\n", + dev_err(&client->dev, "%s(): Memory allocation failed\n", __func__); return -ENOMEM; } @@ -358,8 +353,9 @@ static int __devinit tps62360_probe(struct i2c_client *client, tps->regmap = devm_regmap_init_i2c(client, &tps62360_regmap_config); if (IS_ERR(tps->regmap)) { ret = PTR_ERR(tps->regmap); - dev_err(&client->dev, "%s() Err: Failed to allocate register" - "map: %d\n", __func__, ret); + dev_err(&client->dev, + "%s(): regmap allocation failed with err %d\n", + __func__, ret); return ret; } i2c_set_clientdata(client, tps); @@ -370,35 +366,26 @@ static int __devinit tps62360_probe(struct i2c_client *client, tps->valid_gpios = false; if (gpio_is_valid(tps->vsel0_gpio) && gpio_is_valid(tps->vsel1_gpio)) { - ret = gpio_request(tps->vsel0_gpio, "tps62360-vsel0"); + int gpio_flags; + gpio_flags = (pdata->vsel0_def_state) ? + GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; + ret = gpio_request_one(tps->vsel0_gpio, + gpio_flags, "tps62360-vsel0"); if (ret) { dev_err(&client->dev, - "Err: Could not obtain vsel0 GPIO %d: %d\n", - tps->vsel0_gpio, ret); - goto err_gpio0; - } - ret = gpio_direction_output(tps->vsel0_gpio, - pdata->vsel0_def_state); - if (ret) { - dev_err(&client->dev, "Err: Could not set direction of" - "vsel0 GPIO %d: %d\n", tps->vsel0_gpio, ret); - gpio_free(tps->vsel0_gpio); + "%s(): Could not obtain vsel0 GPIO %d: %d\n", + __func__, tps->vsel0_gpio, ret); goto err_gpio0; } - ret = gpio_request(tps->vsel1_gpio, "tps62360-vsel1"); + gpio_flags = (pdata->vsel1_def_state) ? + GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; + ret = gpio_request_one(tps->vsel1_gpio, + gpio_flags, "tps62360-vsel1"); if (ret) { dev_err(&client->dev, - "Err: Could not obtain vsel1 GPIO %d: %d\n", - tps->vsel1_gpio, ret); - goto err_gpio1; - } - ret = gpio_direction_output(tps->vsel1_gpio, - pdata->vsel1_def_state); - if (ret) { - dev_err(&client->dev, "Err: Could not set direction of" - "vsel1 GPIO %d: %d\n", tps->vsel1_gpio, ret); - gpio_free(tps->vsel1_gpio); + "%s(): Could not obtain vsel1 GPIO %d: %d\n", + __func__, tps->vsel1_gpio, ret); goto err_gpio1; } tps->valid_gpios = true; @@ -415,7 +402,7 @@ static int __devinit tps62360_probe(struct i2c_client *client, ret = tps62360_init_dcdc(tps, pdata); if (ret < 0) { - dev_err(tps->dev, "%s() Err: Init fails with = %d\n", + dev_err(tps->dev, "%s(): Init failed with err = %d\n", __func__, ret); goto err_init; } @@ -424,8 +411,9 @@ static int __devinit tps62360_probe(struct i2c_client *client, rdev = regulator_register(&tps->desc, &client->dev, &pdata->reg_init_data, tps); if (IS_ERR(rdev)) { - dev_err(tps->dev, "%s() Err: Failed to register %s\n", - __func__, id->name); + dev_err(tps->dev, + "%s(): regulator register failed with err %s\n", + __func__, id->name); ret = PTR_ERR(rdev); goto err_init; } @@ -474,8 +462,9 @@ static void tps62360_shutdown(struct i2c_client *client) /* Configure the output discharge path */ st = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), BIT(2)); if (st < 0) - dev_err(tps->dev, "%s() fails in updating reg %d\n", - __func__, REG_RAMPCTRL); + dev_err(tps->dev, + "%s(): register %d update failed with err %d\n", + __func__, REG_RAMPCTRL, st); } static const struct i2c_device_id tps62360_id[] = { -- cgit v1.2.3