int target_backlight_ctrl(struct backlight *bl, uint8_t enable)
{
struct pm8x41_mpp mpp;
int rc;
if (bl->bl_interface_type == BL_DCS)
return 0;
mpp.base = PM8x41_MMP4_BASE;
mpp.vin = MPP_VIN0;
if (enable) {
pm_pwm_enable(false);
rc = pm_pwm_config(PWM_DUTY_US, PWM_PERIOD_US);
if (rc < 0)
mpp.mode = MPP_HIGH;
else {
mpp.mode = MPP_DTEST1;
pm_pwm_enable(true);
}
pm8x41_config_output_mpp(&mpp);
pm8x41_enable_mpp(&mpp, MPP_ENABLE);
} else {
pm_pwm_enable(false);
pm8x41_enable_mpp(&mpp, MPP_DISABLE);
}
mdelay(20);
return 0;
}
int panel_set_backlight(uint8_t bt_level)
{
int rc = -1;
uint32_t duty_us, period_us;
if((bt_level <= 0) || (bt_level > 15))
{
dprintf(CRITICAL, "Error in brightness level (1-15 allowed)\n");
goto bail_out;
}
duty_us = bt_level*PWM_DUTY_LEVEL;
period_us = PWM_PERIOD_USEC;
rc = pm_pwm_config(0, duty_us, period_us);
if(rc)
{
dprintf(CRITICAL, "Error in pwm_config0\n");
goto bail_out;
}
duty_us = PWM_PERIOD_USEC - (bt_level*PWM_DUTY_LEVEL);
period_us = PWM_PERIOD_USEC;
rc = pm_pwm_config(1, duty_us, period_us);
if(rc)
{
dprintf(CRITICAL, "Error in pwm_config1\n");
goto bail_out;
}
rc = pm_pwm_enable(0);
if(rc)
{
dprintf(CRITICAL, "Error in pwm_enable0\n");
goto bail_out;
}
rc = pm_pwm_enable(1);
if(rc)
dprintf(CRITICAL, "Error in pwm_enable1\n");
bail_out:
return rc;
}
