From af7912e57316caa1b705f06b03592cec0737cb36 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 26 Jul 2012 09:50:57 -0400 Subject: [PATCH] drm/radeon: track whether the GPU controls the backlight (v2) A table in the vbios tells us whether the GPU backlight controller is used or not. If the bit is set, the GPU backlight controller is used; if it is not set, an off-chip backlight controller is used. v2: store all the firmware flags, not just BL control Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon_atombios.c | 4 ++++ drivers/gpu/drm/radeon/radeon_mode.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index d67d4f3..e368b30 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1254,6 +1254,10 @@ bool radeon_atom_get_clock_info(struct drm_device *dev) if (rdev->clock.max_pixel_clock == 0) rdev->clock.max_pixel_clock = 40000; + /* not technically a clock, but... */ + rdev->mode_info.firmware_flags = + le16_to_cpu(firmware_info->info.usFirmwareCapability.susAccess); + return true; } diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index d569789..806140d 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -252,6 +252,8 @@ struct radeon_mode_info { /* pointer to fbdev info structure */ struct radeon_fbdev *rfbdev; + /* firmware flags */ + u16 firmware_flags; }; #define MAX_H_CODE_TIMING_LEN 32 -- 2.7.4