Commit af7912e5 authored by Alex Deucher's avatar Alex Deucher
Browse files

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: default avatarAlex Deucher <alexander.deucher@amd.com>
parent efd4e418

drivers/gpu/drm/radeon/radeon_atombios.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

	}

drivers/gpu/drm/radeon/radeon_mode.h

+2 −0
Original line number Diff line number Diff line
@@ -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