Skip to content

Commit

Permalink
---
Browse files Browse the repository at this point in the history
yaml
---
r: 302294
b: refs/heads/master
c: 9a00630
h: refs/heads/master
v: v3
  • Loading branch information
Laxman Dewangan authored and Mark Brown committed May 14, 2012
1 parent 2d50dac commit c42312c
Show file tree
Hide file tree
Showing 4 changed files with 66 additions and 41 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 70e5f6456cf561de8842be537b066a1bab1f1fee
refs/heads/master: 9a00630c3db8ca064a8904dbcd9632fb81244bc0
Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,6 @@ Required properties:
- reg: I2C slave address

Optional properties:
- ti,enable-force-pwm: Enable force PWM mode. This is boolean value.
- ti,enable-vout-discharge: Enable output discharge. This is boolean value.
- ti,enable-pull-down: Enable pull down. This is boolean value.
- ti,vsel0-gpio: GPIO for controlling VSEL0 line.
Expand Down
102 changes: 65 additions & 37 deletions trunk/drivers/regulator/tps62360-regulator.c
Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,8 @@
#define REG_RAMPCTRL 6
#define REG_CHIPID 8

#define FORCE_PWM_ENABLE BIT(7)

enum chips {TPS62360, TPS62361, TPS62362, TPS62363};

#define TPS62360_BASE_VOLTAGE 770000
Expand All @@ -69,7 +71,6 @@ struct tps62360_chip {
int voltage_base;
u8 voltage_reg_mask;
bool en_internal_pulldn;
bool en_force_pwm;
bool en_discharge;
bool valid_gpios;
int lru_index[4];
Expand Down Expand Up @@ -191,37 +192,81 @@ static int tps62360_set_voltage_time_sel(struct regulator_dev *rdev,
return DIV_ROUND_UP(abs(old_uV - new_uV), tps->change_uv_per_us);
}

static int tps62360_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct tps62360_chip *tps = rdev_get_drvdata(rdev);
int i;
int val;
int ret;

/* Enable force PWM mode in FAST mode only. */
switch (mode) {
case REGULATOR_MODE_FAST:
val = FORCE_PWM_ENABLE;
break;

case REGULATOR_MODE_NORMAL:
val = 0;
break;

default:
return -EINVAL;
}

if (!tps->valid_gpios) {
ret = regmap_update_bits(tps->regmap,
REG_VSET0 + tps->curr_vset_id, FORCE_PWM_ENABLE, val);
if (ret < 0)
dev_err(tps->dev,
"%s(): register %d update failed with err %d\n",
__func__, REG_VSET0 + tps->curr_vset_id, ret);
return ret;
}

/* If gpios are valid then all register set need to be control */
for (i = 0; i < 4; ++i) {
ret = regmap_update_bits(tps->regmap,
REG_VSET0 + i, FORCE_PWM_ENABLE, val);
if (ret < 0) {
dev_err(tps->dev,
"%s(): register %d update failed with err %d\n",
__func__, REG_VSET0 + i, ret);
return ret;
}
}
return ret;
}

static unsigned int tps62360_get_mode(struct regulator_dev *rdev)
{
struct tps62360_chip *tps = rdev_get_drvdata(rdev);
unsigned int data;
int ret;

ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data);
if (ret < 0) {
dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
__func__, REG_VSET0 + tps->curr_vset_id, ret);
return ret;
}
return (data & FORCE_PWM_ENABLE) ?
REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
}

static struct regulator_ops tps62360_dcdc_ops = {
.get_voltage_sel = tps62360_dcdc_get_voltage_sel,
.set_voltage_sel = tps62360_dcdc_set_voltage_sel,
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.set_voltage_time_sel = tps62360_set_voltage_time_sel,
.set_mode = tps62360_set_mode,
.get_mode = tps62360_get_mode,
};

static int __devinit tps62360_init_force_pwm(struct tps62360_chip *tps,
struct tps62360_regulator_platform_data *pdata,
int vset_id)
{
int ret;
int bit = 0;

if (pdata->en_force_pwm)
bit = BIT(7);

ret = regmap_update_bits(tps->regmap, REG_VSET0 + vset_id, BIT(7), bit);
if (ret < 0)
dev_err(tps->dev,
"%s(): register %d update failed with err %d\n",
__func__, REG_VSET0 + vset_id, ret);
return ret;
}

static int __devinit tps62360_init_dcdc(struct tps62360_chip *tps,
struct tps62360_regulator_platform_data *pdata)
{
int ret;
int i;
unsigned int ramp_ctrl;

/* Initialize internal pull up/down control */
Expand All @@ -236,19 +281,6 @@ static int __devinit tps62360_init_dcdc(struct tps62360_chip *tps,
return ret;
}

/* Initialize force PWM mode */
if (tps->valid_gpios) {
for (i = 0; i < 4; ++i) {
ret = tps62360_init_force_pwm(tps, pdata, i);
if (ret < 0)
return ret;
}
} else {
ret = tps62360_init_force_pwm(tps, pdata, tps->curr_vset_id);
if (ret < 0)
return ret;
}

/* Reset output discharge path to reduce power consumption */
ret = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), 0);
if (ret < 0) {
Expand Down Expand Up @@ -310,9 +342,6 @@ static struct tps62360_regulator_platform_data *
if (of_find_property(np, "ti,enable-pull-down", NULL))
pdata->en_internal_pulldn = true;

if (of_find_property(np, "ti,enable-force-pwm", NULL))
pdata->en_force_pwm = true;

if (of_find_property(np, "ti,enable-vout-discharge", NULL))
pdata->en_discharge = true;

Expand Down Expand Up @@ -370,7 +399,6 @@ static int __devinit tps62360_probe(struct i2c_client *client,
return -ENOMEM;
}

tps->en_force_pwm = pdata->en_force_pwm;
tps->en_discharge = pdata->en_discharge;
tps->en_internal_pulldn = pdata->en_internal_pulldn;
tps->vsel0_gpio = pdata->vsel0_gpio;
Expand Down
2 changes: 0 additions & 2 deletions trunk/include/linux/regulator/tps62360.h
Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,6 @@
* struct tps62360_regulator_platform_data - tps62360 regulator platform data.
*
* @reg_init_data: The regulator init data.
* @en_force_pwm: Enable force pwm or not.
* @en_discharge: Enable discharge the output capacitor via internal
* register.
* @en_internal_pulldn: internal pull down enable or not.
Expand All @@ -43,7 +42,6 @@
*/
struct tps62360_regulator_platform_data {
struct regulator_init_data *reg_init_data;
bool en_force_pwm;
bool en_discharge;
bool en_internal_pulldn;
int vsel0_gpio;
Expand Down

0 comments on commit c42312c

Please sign in to comment.