From dff45f03f508c92cd8eb2050e27b726726b8ae0b Mon Sep 17 00:00:00 2001 From: Alvin Lee Date: Fri, 8 Dec 2023 11:56:56 -0500 Subject: [PATCH] drm/amd/display: Only clear symclk otg flag for HDMI [Description] There is a corner case where the symclk otg flag is cleared when disabling the phantom pipe for subvp (because the phantom and main pipe share the same link). This is undesired because we need the maintain the correct symclk otg flag state for the main pipe. For now only clear the flag only for HDMI signal type, since it's only set for HDMI signal type (phantom is virtual). The ideal solution is to not clear it if the stream is phantom but currently there's a bug that doesn't allow us to do this. Once this issue is fixed the proper fix can be implemented. Reviewed-by: Samson Tam Acked-by: Wayne Lin Signed-off-by: Alvin Lee Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c | 3 ++- drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c | 3 ++- drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 3 ++- drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c | 3 ++- 4 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c index 762e674f9998c..6457099ed5882 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c @@ -2125,7 +2125,8 @@ static void dce110_reset_hw_ctx_wrap( BREAK_TO_DEBUGGER(); } pipe_ctx_old->stream_res.tg->funcs->disable_crtc(pipe_ctx_old->stream_res.tg); - pipe_ctx_old->stream->link->phy_state.symclk_ref_cnts.otg = 0; + if (dc_is_hdmi_tmds_signal(pipe_ctx_old->stream->signal)) + pipe_ctx_old->stream->link->phy_state.symclk_ref_cnts.otg = 0; pipe_ctx_old->plane_res.mi->funcs->free_mem_input( pipe_ctx_old->plane_res.mi, dc->current_state->stream_count); diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c index 632aa091b6b6b..1c5e3bb6f0ee4 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c @@ -1058,7 +1058,8 @@ static void dcn10_reset_back_end_for_pipe( if (pipe_ctx->stream_res.tg->funcs->set_drr) pipe_ctx->stream_res.tg->funcs->set_drr( pipe_ctx->stream_res.tg, NULL); - pipe_ctx->stream->link->phy_state.symclk_ref_cnts.otg = 0; + if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal)) + pipe_ctx->stream->link->phy_state.symclk_ref_cnts.otg = 0; } for (i = 0; i < dc->res_pool->pipe_count; i++) diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c index 88fe102f82882..0dfcb3cdcd20c 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c @@ -2624,7 +2624,8 @@ static void dcn20_reset_back_end_for_pipe( * the case where the same symclk is shared across multiple otg * instances */ - link->phy_state.symclk_ref_cnts.otg = 0; + if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal)) + link->phy_state.symclk_ref_cnts.otg = 0; if (link->phy_state.symclk_state == SYMCLK_ON_TX_OFF) { link_hwss->disable_link_output(link, &pipe_ctx->link_res, pipe_ctx->stream->signal); diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c index 994250b6f2ef8..260860c259f3a 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c @@ -524,7 +524,8 @@ static void dcn31_reset_back_end_for_pipe( if (pipe_ctx->stream_res.tg->funcs->set_odm_bypass) pipe_ctx->stream_res.tg->funcs->set_odm_bypass( pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing); - pipe_ctx->stream->link->phy_state.symclk_ref_cnts.otg = 0; + if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal)) + pipe_ctx->stream->link->phy_state.symclk_ref_cnts.otg = 0; if (pipe_ctx->stream_res.tg->funcs->set_drr) pipe_ctx->stream_res.tg->funcs->set_drr( -- 2.30.2