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drm/radeon: add get_backlight_level callback

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Read back the backlight level from the hw.
Needed for proper backlight restoration on resume.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2012-09-14 09:59:26 -04:00
parent 2e3b3b105a
commit 6d92f81dcf
5 changed files with 49 additions and 0 deletions
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3
drivers/gpu/drm/radeon/radeon.h
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@@ -1174,6 +1174,8 @@ struct radeon_asic {
void (*wait_for_vblank)(struct radeon_device *rdev, int crtc);
/* set backlight level */
void (*set_backlight_level)(struct radeon_encoder *radeon_encoder, u8 level);
/* get backlight level */
u8 (*get_backlight_level)(struct radeon_encoder *radeon_encoder);
} display;
/* copy functions for bo handling */
struct {
@@ -1767,6 +1769,7 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v);
#define radeon_irq_process(rdev) (rdev)->asic->irq.process((rdev))
#define radeon_get_vblank_counter(rdev, crtc) (rdev)->asic->display.get_vblank_counter((rdev), (crtc))
#define radeon_set_backlight_level(rdev, e, l) (rdev)->asic->display.set_backlight_level((e), (l))
#define radeon_get_backlight_level(rdev, e) (rdev)->asic->display.get_backlight_level((e))
#define radeon_fence_ring_emit(rdev, r, fence) (rdev)->asic->ring[(r)].emit_fence((rdev), (fence))
#define radeon_semaphore_ring_emit(rdev, r, cp, semaphore, emit_wait) (rdev)->asic->ring[(r)].emit_semaphore((rdev), (cp), (semaphore), (emit_wait))
#define radeon_copy_blit(rdev, s, d, np, f) (rdev)->asic->copy.blit((rdev), (s), (d), (np), (f))