drm/amd/display: Calculate swizzle mode using bpp during validation

[Why]
Previously bandwidth validation was failing because swizzle mode was not
initialized during plane_state allocation. The swizzle mode was
calculated using pixed format which is how swizzle mode is initially
calculated in addrlib.

[How]
* Set default swizzle mode for validation to DC_SW_UNKNOWN
* Created new function in dcn10_assign_swizzle_mode which sets the
  plane swizzle mode based on selected pixed format
* Added the call of assign_swizzle_mode into dc_validate_global_state
* Set failsafe swizzle mode back to DC_SW_LINEAR

Signed-off-by: Su Sung Chung <Su.Chung@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -1113,32 +1113,6 @@ static bool is_surface_in_context(
 	return false;
 }
 
-static unsigned int pixel_format_to_bpp(enum surface_pixel_format format)
-{
-	switch (format) {
-	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCbCr:
-	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCrCb:
-		return 12;
-	case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
-	case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
-	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCbCr:
-	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCrCb:
-		return 16;
-	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
-	case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
-	case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
-	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
-		return 32;
-	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
-	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
-	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
-		return 64;
-	default:
-		ASSERT_CRITICAL(false);
-		return -1;
-	}
-}
-
 static enum surface_update_type get_plane_info_update_type(const struct dc_surface_update *u)
 {
 	union surface_update_flags *update_flags = &u->surface->update_flags;
@@ -1172,8 +1146,8 @@ static enum surface_update_type get_plane_info_update_type(const struct dc_surfa
 			|| u->plane_info->dcc.grph.meta_pitch != u->surface->dcc.grph.meta_pitch)
 		update_flags->bits.dcc_change = 1;
 
-	if (pixel_format_to_bpp(u->plane_info->format) !=
-			pixel_format_to_bpp(u->surface->format))
+	if (resource_pixel_format_to_bpp(u->plane_info->format) !=
+			resource_pixel_format_to_bpp(u->surface->format))
 		/* different bytes per element will require full bandwidth
 		 * and DML calculation
 		 */

drivers/gpu/drm/amd/display/dc/core/dc_resource.c

@@ -2099,6 +2099,14 @@ enum dc_status dc_validate_global_state(
 			if (pipe_ctx->stream != stream)
 				continue;
 
+			if (dc->res_pool->funcs->get_default_swizzle_mode &&
+					pipe_ctx->plane_state &&
+					pipe_ctx->plane_state->tiling_info.gfx9.swizzle == DC_SW_UNKNOWN) {
+				result = dc->res_pool->funcs->get_default_swizzle_mode(pipe_ctx->plane_state);
+				if (result != DC_OK)
+					return result;
+			}
+
 			/* Switch to dp clock source only if there is
 			 * no non dp stream that shares the same timing
 			 * with the dp stream.
@@ -2888,3 +2896,32 @@ enum dc_status dc_validate_plane(struct dc *dc, const struct dc_plane_state *pla
 
 	return res;
 }
+
+unsigned int resource_pixel_format_to_bpp(enum surface_pixel_format format)
+{
+	switch (format) {
+	case SURFACE_PIXEL_FORMAT_GRPH_PALETA_256_COLORS:
+		return 8;
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCbCr:
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCrCb:
+		return 12;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
+	case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCbCr:
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCrCb:
+		return 16;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS:
+		return 32;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
+		return 64;
+	default:
+		ASSERT_CRITICAL(false);
+		return -1;
+	}
+}

drivers/gpu/drm/amd/display/dc/dc_hw_types.h

@@ -289,7 +289,8 @@ enum swizzle_mode_values {
 	DC_SW_VAR_S_X = 29,
 	DC_SW_VAR_D_X = 30,
 	DC_SW_VAR_R_X = 31,
-	DC_SW_MAX
+	DC_SW_MAX = 32,
+	DC_SW_UNKNOWN = DC_SW_MAX
 };
 
 union dc_tiling_info {

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c

@@ -1119,6 +1119,24 @@ static enum dc_status dcn10_validate_plane(const struct dc_plane_state *plane_st
 	return DC_OK;
 }
 
+static enum dc_status dcn10_get_default_swizzle_mode(struct dc_plane_state *plane_state)
+{
+	enum dc_status result = DC_OK;
+
+	enum surface_pixel_format surf_pix_format = plane_state->format;
+	unsigned int bpp = resource_pixel_format_to_bpp(surf_pix_format);
+
+	enum swizzle_mode_values swizzle = DC_SW_LINEAR;
+
+	if (bpp == 64)
+		swizzle = DC_SW_64KB_D;
+	else
+		swizzle = DC_SW_64KB_S;
+
+	plane_state->tiling_info.gfx9.swizzle = swizzle;
+	return result;
+}
+
 static const struct dc_cap_funcs cap_funcs = {
 	.get_dcc_compression_cap = dcn10_get_dcc_compression_cap
 };
@@ -1129,7 +1147,8 @@ static const struct resource_funcs dcn10_res_pool_funcs = {
 	.validate_bandwidth = dcn_validate_bandwidth,
 	.acquire_idle_pipe_for_layer = dcn10_acquire_idle_pipe_for_layer,
 	.validate_plane = dcn10_validate_plane,
-	.add_stream_to_ctx = dcn10_add_stream_to_ctx
+	.add_stream_to_ctx = dcn10_add_stream_to_ctx,
+	.get_default_swizzle_mode = dcn10_get_default_swizzle_mode
 };
 
 static uint32_t read_pipe_fuses(struct dc_context *ctx)

drivers/gpu/drm/amd/display/dc/inc/core_types.h

@@ -120,6 +120,9 @@ struct resource_funcs {
 				struct dc *dc,
 				struct dc_state *new_ctx,
 				struct dc_stream_state *stream);
+	enum dc_status (*get_default_swizzle_mode)(
+			struct dc_plane_state *plane_state);
+
 };
 
 struct audio_support{

drivers/gpu/drm/amd/display/dc/inc/resource.h

@@ -172,4 +172,7 @@ void update_audio_usage(
 		const struct resource_pool *pool,
 		struct audio *audio,
 		bool acquired);
+
+unsigned int resource_pixel_format_to_bpp(enum surface_pixel_format format);
+
 #endif /* DRIVERS_GPU_DRM_AMD_DC_DEV_DC_INC_RESOURCE_H_ */