Not all systems expose a firmware or platform mechanism for changing the backlight intensity on i915, so add native driver support.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Sedat Dilek <sedat.dilek@googlemail.com>
Tested-by: Michel Alexandre Salim <salimma@fedoraproject.org>
Tested-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index feb4f164fd1b..7916bd97d5c1 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -36,6 +36,7 @@
 #include <linux/io-mapping.h>
 #include <linux/i2c.h>
 #include <drm/intel-gtt.h>
+#include <linux/backlight.h>
 
 /* General customization:
  */
@@ -690,6 +691,7 @@ typedef struct drm_i915_private {
         int child_dev_num;
         struct child_device_config *child_dev;
         struct drm_connector *int_lvds_connector;
+        struct drm_connector *int_edp_connector;
 
         bool mchbar_need_disable;
 
@@ -723,6 +725,8 @@ typedef struct drm_i915_private {
         /* list of fbdev register on this device */
         struct intel_fbdev *fbdev;
 
+        struct backlight_device *backlight;
+
         struct drm_property *broadcast_rgb_property;
         struct drm_property *force_audio_property;