diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3451-AMD-VSDB-PARSER.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3451-AMD-VSDB-PARSER.patch | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3451-AMD-VSDB-PARSER.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3451-AMD-VSDB-PARSER.patch new file mode 100644 index 00000000..8e13efa9 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3451-AMD-VSDB-PARSER.patch @@ -0,0 +1,101 @@ +From 0b543bad96025365812f2f86bec65643aa74be29 Mon Sep 17 00:00:00 2001 +From: Mikita Lipski <mikita.lipski@amd.com> +Date: Mon, 18 Dec 2017 16:45:12 -0500 +Subject: [PATCH 3451/4131] AMD VSDB PARSER + +Change-Id: I4c46cb230793d0d8d9564953906248a725ce7d88 +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 70 +++++++++++++++++++++-- + 1 file changed, 66 insertions(+), 4 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +index d057342..6109961 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -2364,6 +2364,70 @@ static void set_master_stream(struct dc_stream_state *stream_set[], + } + } + ++bool dm_helpers_parse_amd_vsdb(struct edid *edid) ++{ ++ uint8_t *edid_ext = NULL; ++ unsigned int start, finish, i, j; ++ uint8_t *disp_block; ++ unsigned int disp_block_len; ++ uint8_t ieeeID; ++ uint8_t masked_counter = 0; ++ ++ if (edid == NULL || edid->extensions == 0) ++ return false; ++ ++ for (i = 0; i < edid->extensions; ++i) { ++ edid_ext = (uint8_t *)edid + (EDID_LENGTH * (i + 1)); ++ if (edid_ext[0] == CEA_EXT) ++ break; ++ } ++ ++ start = 4; ++ finish = (unsigned int)edid_ext[2]; ++ ++ if (finish == 0) ++ finish = 127; ++ ++ if (finish < 4 || finish > 127) ++ return false; ++ ++ if (i == edid->extensions) ++ return false; ++ ++ j = start; ++ ++ if (!edid_ext[j]) ++ return false; ++ ++ masked_counter = edid_ext[j] & 0x1f; ++ ++ if (masked_counter == 0) ++ return false; ++ ++ for (j = start; (j < finish) && (j + masked_counter) < finish; j += (masked_counter + 1)) { ++ masked_counter = edid_ext[j] & 0x1f; ++ ++ if (&edid_ext[j] == NULL) ++ return false; ++ ++ disp_block = &(edid_ext[j]); ++ disp_block_len = ((unsigned int)masked_counter); ++ ++ if (disp_block_len < 5) ++ continue; ++ ++ ieeeID = disp_block[1] | disp_block[2] | disp_block[3]; ++ ++ if (ieeeID == 26) { ++ if (((disp_block[5] & 8) == 8) && ((disp_block[14] & 1) == 1)) ++ return true; ++ } ++ ++ } ++ ++ return false; ++} ++ + static void dm_enable_per_frame_crtc_master_sync(struct dc_state *context) + { + int i = 0; +@@ -2373,10 +2437,8 @@ static void dm_enable_per_frame_crtc_master_sync(struct dc_state *context) + for (i = 0; i < context->stream_count ; i++) { + if (!context->streams[i]) + continue; +- /* TODO: add a function to read AMD VSDB bits and will set +- * crtc_sync_master.multi_sync_enabled flag +- * For now its set to false +- */ ++ context->streams[i]->triggered_crtc_reset.enabled = ++ dm_helpers_parse_amd_vsdb((struct edid *) context->streams[i]->sink->dc_edid.raw_edid); + set_multisync_trigger_params(context->streams[i]); + } + set_master_stream(context->streams, context->stream_count); +-- +2.7.4 + |