[Intel-gfx] [PATCH 13/14] drm: Add the VBT backlight sequences

[Vidya Srinivas]

Add the support for backlight sequences in drm layer
to configure the backlight settings during
backlight on/off sequences.

Signed-off-by: Uma Shankar <uma.shankar at intel.com>
---
 include/drm/drm_panel.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index c49358e..8773aac 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -74,6 +74,8 @@ struct drm_panel_funcs {
 	int (*power_off)(struct drm_panel *panel);
 	int (*enable)(struct drm_panel *panel);
 	int (*get_modes)(struct drm_panel *panel);
+	int (*backlight_on)(struct drm_panel *panel);
+	int (*backlight_off)(struct drm_panel *panel);
 	int (*get_timings)(struct drm_panel *panel, unsigned int num_timings,
 			   struct display_timing *timings);
 };
@@ -141,6 +143,22 @@ static inline int drm_panel_reset(struct drm_panel *panel)
         return panel ? -ENOSYS : -EINVAL;
 }
 
+static inline int drm_panel_backlight_on(struct drm_panel *panel)
+{
+	if (panel && panel->funcs && panel->funcs->backlight_on)
+		return panel->funcs->backlight_on(panel);
+
+	return panel ? -ENOSYS : -EINVAL;
+}
+
+static inline int drm_panel_backlight_off(struct drm_panel *panel)
+{
+	if (panel && panel->funcs && panel->funcs->backlight_off)
+		return panel->funcs->backlight_off(panel);
+
+	return panel ? -ENOSYS : -EINVAL;
+}
+
 /**
  * drm_panel_prepare - power on a panel
  * @panel: DRM panel
-- 
1.9.1