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Commit ee681c9a authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu/atom: add support for new SetPixelClock table 



New version of the SetPixelClock table for elm/baf.  The
new table calculates the pll dividers and handles spread
spectrum calculations and setup.

Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarJammy Zhou <Jammy.Zhou@amd.com>
parent 541cd555

drivers/gpu/drm/amd/amdgpu/atombios_crtc.c

+41 −12
Original line number Diff line number Diff line
@@ -461,6 +461,7 @@ union set_pixel_clock { 
	PIXEL_CLOCK_PARAMETERS_V3 v3;

	PIXEL_CLOCK_PARAMETERS_V5 v5;

	PIXEL_CLOCK_PARAMETERS_V6 v6;

	PIXEL_CLOCK_PARAMETERS_V7 v7;

};



/* on DCE5, make sure the voltage is high enough to support the
@@ -695,6 +696,34 @@ void amdgpu_atombios_crtc_program_pll(struct drm_crtc *crtc, 
			args.v6.ucEncoderMode = encoder_mode;

			args.v6.ucPpll = pll_id;

			break;

		case 7:

			args.v7.ulPixelClock = cpu_to_le32(clock * 10); /* 100 hz units */

			args.v7.ucMiscInfo = 0;

			if ((encoder_mode == ATOM_ENCODER_MODE_DVI) &&

			    (clock > 165000))

				args.v7.ucMiscInfo |= PIXEL_CLOCK_V7_MISC_DVI_DUALLINK_EN;

			args.v7.ucCRTC = crtc_id;

			if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {

				switch (bpc) {

				case 8:

				default:

					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_DIS;

					break;

				case 10:

					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_5_4;

					break;

				case 12:

					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_3_2;

					break;

				case 16:

					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_2_1;

					break;

				}

			}

			args.v7.ucTransmitterID = encoder_id;

			args.v7.ucEncoderMode = encoder_mode;

			args.v7.ucPpll = pll_id;

			break;

		default:

			DRM_ERROR("Unknown table version %d %d\n", frev, crev);

			return;