static int pwm_regulator_set_voltage(struct udevice *dev, int uvolt)
{
struct pwm_regulator_info *priv = dev_get_priv(dev);
int duty_cycle;
int ret = 0;
duty_cycle = pwm_voltage_to_duty_cycle_percentage(dev, uvolt);
ret = pwm_set_invert(priv->pwm, priv->pwm_id, priv->polarity);
if (ret) {
dev_err(dev, "Failed to init PWM\n");
return ret;
}
ret = pwm_set_config(priv->pwm, priv->pwm_id,
priv->period_ns, (priv->period_ns / 100) * duty_cycle);
if (ret) {
dev_err(dev, "Failed to configure PWM\n");
return ret;
}
priv->volt_uV = uvolt;
return ret;
}
static int set_pwm(struct pwm_backlight_priv *priv)
{
uint duty_cycle;
int ret;
duty_cycle = priv->period_ns * (priv->cur_level - priv->min_level) /
(priv->max_level - priv->min_level + 1);
ret = pwm_set_config(priv->pwm, priv->channel, priv->period_ns,
duty_cycle);
if (ret)
return log_ret(ret);
ret = pwm_set_invert(priv->pwm, priv->channel, priv->polarity);
return log_ret(ret);
}
/* Basic test of the pwm uclass */
static int dm_test_pwm_base(struct unit_test_state *uts)
{
struct udevice *dev;
ut_assertok(uclass_get_device(UCLASS_PWM, 0, &dev));
ut_assertnonnull(dev);
ut_assertok(pwm_set_config(dev, 0, 100, 50));
ut_assertok(pwm_set_enable(dev, 0, true));
ut_assertok(pwm_set_enable(dev, 1, true));
ut_assertok(pwm_set_enable(dev, 2, true));
ut_asserteq(-ENOSPC, pwm_set_enable(dev, 3, true));
ut_assertok(pwm_set_invert(dev, 0, true));
ut_assertok(uclass_get_device(UCLASS_PWM, 1, &dev));
ut_asserteq(-ENODEV, uclass_get_device(UCLASS_PWM, 2, &dev));
return 0;
}