drm/amd/display: Add support for SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616.

Add the necessary format definition, bandwidth and pixel size mappings,
prescaler setup, and pixelformat selection, following the logic
already present for SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616.

The new SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616 is implemented as the
old SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 format, but with swapped
red <-> green color channel, by use of the hardware xbar.

Please note that on the DCN 1/2/3 display engines, the pixelformat
in hubp and dpp setup for the old SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616
and the new SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616 was changed from
format id 22 to id 26. See amd/include/navi10_enum.h for the meaning
of the id's.

For format 22, the display engine read the framebuffer in 16 bpc format,
but truncated to the 12 bpc actually supported by later pipeline stages.
However, the engine took the 12 LSB of each color component for
truncation, which is incompatible with rendering at least under Vulkan,
where content is 16 bit wide, and a 12 MSB alignment would be appropriate,
if any. Format 20 for ARGB16161616_12MSB does work, but even better, we
can choose format 26 for ARGB16161616_UNORM, keeping all 16 bits around
until later stages of the display pipeline.

This allows to directly consume what the rendering hw produces under
Vulkan for swapchain format VK_FORMAT_R16G16B16A16_UNORM, as tested
with a patched version of the current AMD open-source amdvlk driver
which maps swapchain format VK_FORMAT_R16G16B16A16_UNORM onto
DRM_FORMAT_XBGR16161616.

The old id 22 would cause colorful pixeltrash to be displayed instead.

Tested under DCN-1.0 and DCE-11.2.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

15 files changed, 29 insertions, 6 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
index 1244fcb0f446..ff5bb152ef49 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
@@ -2863,6 +2863,7 @@ static void populate_initial_data(
 			data->bytes_per_pixel[num_displays + 4] = 4;
 			break;
 		case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+		case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 		case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 			data->bytes_per_pixel[num_displays + 4] = 8;
 			break;
@@ -2966,6 +2967,7 @@ static void populate_initial_data(
 				data->bytes_per_pixel[num_displays + 4] = 4;
 				break;
 			case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+			case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 			case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 				data->bytes_per_pixel[num_displays + 4] = 8;
 				break;
diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
index d4df4da5b81a..0e18df1283b6 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
@@ -236,6 +236,7 @@ static enum dcn_bw_defs tl_pixel_format_to_bw_defs(enum surface_pixel_format for
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS:
 		return dcn_bw_rgb_sub_32;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 		return dcn_bw_rgb_sub_64;
@@ -375,6 +376,7 @@ static void pipe_ctx_to_e2e_pipe_params (
 		input->src.viewport_height_c   = input->src.viewport_height / 2;
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 		input->src.source_format = dm_444_64;
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index aea7d4cbb62c..c4d699e2c2fc 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -611,6 +611,7 @@ static enum pixel_format convert_pixel_format_to_dalsurface(
 		dal_pixel_format = PIXEL_FORMAT_420BPP10;
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 	default:
 		dal_pixel_format = PIXEL_FORMAT_UNKNOWN;
 		break;
@@ -2880,6 +2881,7 @@ unsigned int resource_pixel_format_to_bpp(enum surface_pixel_format format)
 #endif
 		return 32;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 		return 64;
diff --git a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
index 04957a9efab2..52355fe6994c 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
@@ -182,6 +182,8 @@ enum surface_pixel_format {
 	SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS,
 	/*64 bpp */
 	SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616,
+	/*swapped*/
+	SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616,
 	/*float*/
 	SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F,
 	/*swaped & float*/
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c b/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
index 79a6f261a0da..4cdd4dacb761 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
@@ -566,6 +566,7 @@ static void program_grph_pixel_format(
 			 *  should problem swap endian*/
 		format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010 ||
 		format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS ||
+		format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616 ||
 		format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F) {
 		/* ABGR formats */
 		red_xbar = 2;
@@ -606,6 +607,7 @@ static void program_grph_pixel_format(
 		fallthrough;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F: /* shouldn't this get float too? */
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 		grph_depth = 3;
 		grph_format = 0;
 		break;
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 1ef1b1b33fb0..e73198738fd8 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -267,6 +267,7 @@ static void build_prescale_params(struct ipp_prescale_params *prescale_params,
 		prescale_params->scale = 0x2008;
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 		prescale_params->scale = 0x2000;
 		break;
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c
index 8bbb499067f7..db7557a1c613 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c
@@ -393,6 +393,7 @@ static void program_pixel_format(
 			grph_format = 1;
 			break;
 		case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+		case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 		case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 		case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 			grph_depth = 3;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
index 7f8456b9988b..a77e7bd3b8d5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
@@ -257,7 +257,8 @@ static void dpp1_setup_format_flags(enum surface_pixel_format input_format,\
 	if (input_format == SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F ||
 		input_format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F)
 		*fmt = PIXEL_FORMAT_FLOAT;
-	else if (input_format == SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616)
+	else if (input_format == SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 ||
+		input_format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616)
 		*fmt = PIXEL_FORMAT_FIXED16;
 	else
 		*fmt = PIXEL_FORMAT_FIXED;
@@ -368,7 +369,8 @@ void dpp1_cnv_setup (
 		select = INPUT_CSC_SELECT_ICSC;
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
-		pixel_format = 22;
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
+		pixel_format = 26; /* ARGB16161616_UNORM */
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 		pixel_format = 24;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
index 6f42d10dd772..f4f423d0b8c3 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
@@ -785,6 +785,7 @@ static bool hubbub1_dcc_support_pixel_format(
 		*bytes_per_element = 4;
 		return true;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 		*bytes_per_element = 8;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c
index e39e8a2f715d..04303fe9c659 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c
@@ -245,6 +245,7 @@ void hubp1_program_pixel_format(
 	if (format == SURFACE_PIXEL_FORMAT_GRPH_ABGR8888
 			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010
 			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS
+			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616
 			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F) {
 		red_bar = 2;
 		blue_bar = 3;
@@ -277,8 +278,9 @@ void hubp1_program_pixel_format(
 				SURFACE_PIXEL_FORMAT, 10);
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616: /*we use crossbar already*/
 		REG_UPDATE(DCSURF_SURFACE_CONFIG,
-				SURFACE_PIXEL_FORMAT, 22);
+				SURFACE_PIXEL_FORMAT, 26); /* ARGB16161616_UNORM */
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:/*we use crossbar already*/
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp.c
index 4af96cc5d9d6..f2f44ddf522a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp.c
@@ -166,7 +166,8 @@ static void dpp2_cnv_setup (
 		select = DCN2_ICSC_SELECT_ICSC_A;
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
-		pixel_format = 22;
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
+		pixel_format = 26; /* ARGB16161616_UNORM */
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 		pixel_format = 24;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c
index 6d03d98fca22..91a9305d42e8 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c
@@ -158,6 +158,7 @@ bool hubbub2_dcc_support_pixel_format(
 		*bytes_per_element = 4;
 		return true;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 		*bytes_per_element = 8;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c
index a1318c31bcfa..7e54058715aa 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c
@@ -431,6 +431,7 @@ void hubp2_program_pixel_format(
 	if (format == SURFACE_PIXEL_FORMAT_GRPH_ABGR8888
 			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010
 			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS
+			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616
 			|| format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F) {
 		red_bar = 2;
 		blue_bar = 3;
@@ -463,8 +464,9 @@ void hubp2_program_pixel_format(
 				SURFACE_PIXEL_FORMAT, 10);
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616: /*we use crossbar already*/
 		REG_UPDATE(DCSURF_SURFACE_CONFIG,
-				SURFACE_PIXEL_FORMAT, 22);
+				SURFACE_PIXEL_FORMAT, 26); /* ARGB16161616_UNORM */
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:/*we use crossbar already*/
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index a3bc9176cc13..0d06307456a2 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -2365,6 +2365,7 @@ int dcn20_populate_dml_pipes_from_context(
 				pipes[pipe_cnt].pipe.src.source_format = dm_420_10;
 				break;
 			case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+			case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 			case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 			case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 				pipes[pipe_cnt].pipe.src.source_format = dm_444_64;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c
index 434d3c46cad4..154279b91967 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c
@@ -245,7 +245,8 @@ static void dpp3_cnv_setup (
 		select = INPUT_CSC_SELECT_ICSC;
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
-		pixel_format = 22;
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
+		pixel_format = 26; /* ARGB16161616_UNORM */
 		break;
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 		pixel_format = 24;