diff options
Diffstat (limited to 'drivers/regulator/pwm-regulator.c')
| -rw-r--r-- | drivers/regulator/pwm-regulator.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c index 7920411057af..7d26d3b0eed6 100644 --- a/drivers/regulator/pwm-regulator.c +++ b/drivers/regulator/pwm-regulator.c @@ -52,10 +52,31 @@ struct pwm_voltages { /** * Voltage table call-backs */ +static void pwm_regulator_init_state(struct regulator_dev *rdev) +{ + struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev); + struct pwm_state pwm_state; + unsigned int dutycycle; + int i; + + pwm_get_state(drvdata->pwm, &pwm_state); + dutycycle = pwm_get_relative_duty_cycle(&pwm_state, 100); + + for (i = 0; i < rdev->desc->n_voltages; i++) { + if (dutycycle == drvdata->duty_cycle_table[i].dutycycle) { + drvdata->state = i; + return; + } + } +} + static int pwm_regulator_get_voltage_sel(struct regulator_dev *rdev) { struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev); + if (drvdata->state < 0) + pwm_regulator_init_state(rdev); + return drvdata->state; } @@ -221,6 +242,7 @@ static int pwm_regulator_init_table(struct platform_device *pdev, return ret; } + drvdata->state = -EINVAL; drvdata->duty_cycle_table = duty_cycle_table; memcpy(&drvdata->ops, &pwm_regulator_voltage_table_ops, sizeof(drvdata->ops)); |