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Commit c23632d4 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/atom: workaround vbios bug in transmitter table on rs780 

Some rs780 asics seem to be affected as well.

See:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=91f3a6aaf280294b07c05dfe606e6c27b7ba3c72

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=60791



Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent bc5bd37c

drivers/gpu/drm/radeon/atombios_encoders.c

+1 −1
Original line number Diff line number Diff line
@@ -1655,7 +1655,7 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode) 
			 * does the same thing and more.

			 */

			if ((rdev->family != CHIP_RV710) && (rdev->family != CHIP_RV730) &&

			    (rdev->family != CHIP_RS880))

			    (rdev->family != CHIP_RS780) && (rdev->family != CHIP_RS880))

				atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);

		}

		if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector) {