diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/2495-drm-amd-display-fix-can-not-turn-on-two-displays-due.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/2495-drm-amd-display-fix-can-not-turn-on-two-displays-due.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/2495-drm-amd-display-fix-can-not-turn-on-two-displays-due.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/2495-drm-amd-display-fix-can-not-turn-on-two-displays-due.patch new file mode 100644 index 00000000..37a3151e --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/2495-drm-amd-display-fix-can-not-turn-on-two-displays-due.patch @@ -0,0 +1,41 @@ +From 7f859c5e6090250d7a057cc840b34de9f80db554 Mon Sep 17 00:00:00 2001 +From: Charlene Liu <charlene.liu@amd.com> +Date: Fri, 29 Mar 2019 19:40:58 -0400 +Subject: [PATCH 2495/2940] drm/amd/display: fix can not turn on two displays + due to DSC_RESOURCE failed. + +[Why] +Can not turn on two displays at the same time with the asic having only one DSC. +DC_DSC_RESOURCE allocation failed. + +[Solution] +Only add_dsc if the timing is dsc capable based on diag_dc and num_dsc + +Signed-off-by: Charlene Liu <charlene.liu@amd.com> +Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +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 dc3aa7debad5..e3cd3e3db2c4 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +@@ -1284,6 +1284,12 @@ enum dc_status dcn20_add_stream_to_ctx(struct dc *dc, struct dc_state *new_ctx, + if (pipe_ctx->stream != dc_stream) + continue; + ++ if (IS_DIAG_DC(dc->ctx->dce_environment) || ++ dc->res_pool->res_cap->num_dsc == 1) { ++ // Diags build can also run on platforms that have fewer DSCs than pipes. ++ // In that case, add DSC only if needed by timing. ++ is_add_dsc = (dc_stream->timing.flags.DSC == 1); ++ } + if (is_add_dsc) { + pipe_ctx->stream_res.dsc = acquire_dsc(&new_ctx->res_ctx, pool); + +-- +2.17.1 + |