diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_panel.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c index 6f3eaae3761f..7b3ec6eb3382 100644 --- a/drivers/gpu/drm/i915/display/intel_panel.c +++ b/drivers/gpu/drm/i915/display/intel_panel.c @@ -1840,13 +1840,22 @@ static int pwm_setup_backlight(struct intel_connector *connector, enum pipe pipe) { struct drm_device *dev = connector->base.dev; + struct drm_i915_private *dev_priv = to_i915(dev); struct intel_panel *panel = &connector->panel; + const char *desc; int retval; - /* Get the PWM chip for backlight control */ - panel->backlight.pwm = pwm_get(dev->dev, "pwm_backlight"); + /* Get the right PWM chip for DSI backlight according to VBT */ + if (dev_priv->vbt.dsi.config->pwm_blc == PPS_BLC_PMIC) { + panel->backlight.pwm = pwm_get(dev->dev, "pwm_pmic_backlight"); + desc = "PMIC"; + } else { + panel->backlight.pwm = pwm_get(dev->dev, "pwm_soc_backlight"); + desc = "SoC"; + } + if (IS_ERR(panel->backlight.pwm)) { - DRM_ERROR("Failed to own the pwm chip\n"); + DRM_ERROR("Failed to get the %s PWM chip\n", desc); panel->backlight.pwm = NULL; return -ENODEV; } @@ -1873,6 +1882,7 @@ static int pwm_setup_backlight(struct intel_connector *connector, CRC_PMIC_PWM_PERIOD_NS); panel->backlight.enabled = panel->backlight.level != 0; + DRM_INFO("Using %s PWM for LCD backlight control\n", desc); return 0; } |