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| author | Axel Lin <axel.lin@gmail.com> | 2012-04-11 07:59:14 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-04-13 10:54:45 +0200 |
| commit | 276909d3599987a0ba44e1b984fde20323ff2aea (patch) | |
| tree | 0eb4009f077c2107d3c432e25535b06aa10bcbac | |
| parent | regulator: Convert max8998 to get_voltage_sel (diff) | |
| download | linux-276909d3599987a0ba44e1b984fde20323ff2aea.tar.xz linux-276909d3599987a0ba44e1b984fde20323ff2aea.zip | |
regulator: Convert max8998 to set_voltage_time_sel
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | drivers/regulator/max8998.c | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c index c96b87abf335..4ca22f9b52e3 100644 --- a/drivers/regulator/max8998.c +++ b/drivers/regulator/max8998.c @@ -359,8 +359,7 @@ static int max8998_set_voltage_buck(struct regulator_dev *rdev, const struct voltage_map_desc *desc; int buck = rdev_get_id(rdev); int reg, shift = 0, mask, ret; - int difference, i, j, previous_sel; - u8 val = 0; + int i, j, previous_sel; static u8 buck1_last_val; if (buck >= ARRAY_SIZE(ldo_voltage_map)) @@ -484,19 +483,40 @@ buck2_exit: break; } + return ret; +} + +static int max8998_set_voltage_buck_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, + unsigned int new_selector) +{ + struct max8998_data *max8998 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8998->iodev->i2c; + const struct voltage_map_desc *desc; + int buck = rdev_get_id(rdev); + u8 val = 0; + int difference, ret; + + if (buck < MAX8998_BUCK1 || buck > MAX8998_BUCK4) + return -EINVAL; + + desc = ldo_voltage_map[buck]; + /* Voltage stabilization */ - max8998_read_reg(i2c, MAX8998_REG_ONOFF4, &val); + ret = max8998_read_reg(i2c, MAX8998_REG_ONOFF4, &val); + if (ret) + return ret; /* lp3974 hasn't got ENRAMP bit - ramp is assumed as true */ /* MAX8998 has ENRAMP bit implemented, so test it*/ if (max8998->iodev->type == TYPE_MAX8998 && !(val & MAX8998_ENRAMP)) - return ret; + return 0; - difference = (i - previous_sel) * desc->step; + difference = (new_selector - old_selector) * desc->step; if (difference > 0) - udelay(difference / ((val & 0x0f) + 1)); + return difference / ((val & 0x0f) + 1); - return ret; + return 0; } static struct regulator_ops max8998_ldo_ops = { @@ -517,6 +537,7 @@ static struct regulator_ops max8998_buck_ops = { .disable = max8998_ldo_disable, .get_voltage_sel = max8998_get_voltage_sel, .set_voltage = max8998_set_voltage_buck, + .set_voltage_time_sel = max8998_set_voltage_buck_time_sel, .set_suspend_enable = max8998_ldo_enable, .set_suspend_disable = max8998_ldo_disable, }; |