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Commit cc9f67a0 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms/atom: AdjustPixelClock fixes for DP bridges 



Need to set the external transmitter type properly in
AdjustPixelClock to get the properly output.

Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent f89931f3

drivers/gpu/drm/radeon/atombios_crtc.c

+7 −0
Original line number Diff line number Diff line
@@ -671,6 +671,13 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, 
								DISPPLL_CONFIG_DUAL_LINK;

					}

				}

				if (radeon_encoder_is_dp_bridge(encoder)) {

					struct drm_encoder *ext_encoder = radeon_atom_get_external_encoder(encoder);

					struct radeon_encoder *ext_radeon_encoder = to_radeon_encoder(ext_encoder);

					args.v3.sInput.ucExtTransmitterID = ext_radeon_encoder->encoder_id;

				} else

					args.v3.sInput.ucExtTransmitterID = 0;



				atom_execute_table(rdev->mode_info.atom_context,

						   index, (uint32_t *)&args);

				adjusted_clock = le32_to_cpu(args.v3.sOutput.ulDispPllFreq) * 10;

drivers/gpu/drm/radeon/radeon_mode.h

+1 −0
Original line number Diff line number Diff line
@@ -484,6 +484,7 @@ extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder, 
					   int action, uint8_t lane_num,

					   uint8_t lane_set);

extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder);

extern struct drm_encoder *radeon_atom_get_external_encoder(struct drm_encoder *encoder);

extern int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,

				u8 write_byte, u8 *read_byte);