From 1445d967fb915156aed0e79ca80c239cb2d414ce Mon Sep 17 00:00:00 2001 From: "Leo (Hanghong) Ma" Date: Fri, 1 Oct 2021 22:36:18 +0800 Subject: [PATCH] drm/amd/display: Add helper for blanking all dp displays [Why & How] The codes to blank all dp display have been called many times, so add a helper in dc_link to make it more concise. Reviewed-by: Aric Cyr Acked-by: Solomon Chiu Signed-off-by: Leo (Hanghong) Ma Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 45 ++++++++++++++++++++++ drivers/gpu/drm/amd/display/dc/dc_link.h | 1 + .../amd/display/dc/dce110/dce110_hw_sequencer.c | 24 ++---------- .../drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 41 ++------------------ drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c | 39 ++----------------- drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c | 39 ++----------------- 6 files changed, 59 insertions(+), 130 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 02c7a18..74da226 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -1906,6 +1906,51 @@ static enum dc_status enable_link_dp_mst( return enable_link_dp(state, pipe_ctx); } +void blank_all_dp_displays(struct dc *dc, bool hw_init) +{ + unsigned int i, j, fe; + uint8_t dpcd_power_state = '\0'; + enum dc_status status = DC_ERROR_UNEXPECTED; + + for (i = 0; i < dc->link_count; i++) { + enum signal_type signal = dc->links[i]->connector_signal; + + if ((signal == SIGNAL_TYPE_EDP) || + (signal == SIGNAL_TYPE_DISPLAY_PORT)) { + if (hw_init && signal != SIGNAL_TYPE_EDP) { + /* DP 2.0 spec requires that we read LTTPR caps first */ + dp_retrieve_lttpr_cap(dc->links[i]); + /* if any of the displays are lit up turn them off */ + status = core_link_read_dpcd(dc->links[i], DP_SET_POWER, + &dpcd_power_state, sizeof(dpcd_power_state)); + } + + if ((signal != SIGNAL_TYPE_EDP && status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) || + (!hw_init && dc->links[i]->link_enc->funcs->is_dig_enabled(dc->links[i]->link_enc))) { + if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY && + dc->links[i]->link_enc->funcs->get_dig_frontend) { + fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc); + if (fe == ENGINE_ID_UNKNOWN) + continue; + + for (j = 0; j < dc->res_pool->stream_enc_count; j++) { + if (fe == dc->res_pool->stream_enc[j]->id) { + dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i], + dc->res_pool->stream_enc[j]); + break; + } + } + } + + if (!dc->links[i]->wa_flags.dp_keep_receiver_powered || + (hw_init && signal != SIGNAL_TYPE_EDP)) + dp_receiver_power_ctrl(dc->links[i], false); + } + } + } + +} + static bool get_ext_hdmi_settings(struct pipe_ctx *pipe_ctx, enum engine_id eng_id, struct ext_hdmi_settings *settings) diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index a73d64b..69b008b 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -277,6 +277,7 @@ bool dc_link_setup_psr(struct dc_link *dc_link, struct psr_context *psr_context); void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency); +void blank_all_dp_displays(struct dc *dc, bool hw_init); /* Request DC to detect if there is a Panel connected. * boot - If this call is during initial boot. 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 af3e68d..8108f9a 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 @@ -1649,31 +1649,13 @@ static enum dc_status apply_single_controller_ctx_to_hw( static void power_down_encoders(struct dc *dc) { - int i, j; + int i; + + blank_all_dp_displays(dc, false); for (i = 0; i < dc->link_count; i++) { enum signal_type signal = dc->links[i]->connector_signal; - if ((signal == SIGNAL_TYPE_EDP) || - (signal == SIGNAL_TYPE_DISPLAY_PORT)) { - if (dc->links[i]->link_enc->funcs->get_dig_frontend && - dc->links[i]->link_enc->funcs->is_dig_enabled(dc->links[i]->link_enc)) { - unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend( - dc->links[i]->link_enc); - - for (j = 0; j < dc->res_pool->stream_enc_count; j++) { - if (fe == dc->res_pool->stream_enc[j]->id) { - dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i], - dc->res_pool->stream_enc[j]); - break; - } - } - } - - if (!dc->links[i]->wa_flags.dp_keep_receiver_powered) - dp_receiver_power_ctrl(dc->links[i], false); - } - if (signal != SIGNAL_TYPE_EDP) signal = SIGNAL_TYPE_NONE; diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index c5e2b4f..bc3ec05 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1366,7 +1366,7 @@ void dcn10_init_pipes(struct dc *dc, struct dc_state *context) void dcn10_init_hw(struct dc *dc) { - int i, j; + int i; struct abm *abm = dc->res_pool->abm; struct dmcu *dmcu = dc->res_pool->dmcu; struct dce_hwseq *hws = dc->hwseq; @@ -1462,43 +1462,8 @@ void dcn10_init_hw(struct dc *dc) dmub_enable_outbox_notification(dc); /* we want to turn off all dp displays before doing detection */ - if (dc->config.power_down_display_on_boot) { - uint8_t dpcd_power_state = '\0'; - enum dc_status status = DC_ERROR_UNEXPECTED; - - for (i = 0; i < dc->link_count; i++) { - if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) - continue; - - /* DP 2.0 requires that LTTPR Caps be read first */ - dp_retrieve_lttpr_cap(dc->links[i]); - - /* - * If any of the displays are lit up turn them off. - * The reason is that some MST hubs cannot be turned off - * completely until we tell them to do so. - * If not turned off, then displays connected to MST hub - * won't light up. - */ - status = core_link_read_dpcd(dc->links[i], DP_SET_POWER, - &dpcd_power_state, sizeof(dpcd_power_state)); - if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) { - /* blank dp stream before power off receiver*/ - if (dc->links[i]->link_enc->funcs->get_dig_frontend) { - unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc); - - for (j = 0; j < dc->res_pool->stream_enc_count; j++) { - if (fe == dc->res_pool->stream_enc[j]->id) { - dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i], - dc->res_pool->stream_enc[j]); - break; - } - } - } - dp_receiver_power_ctrl(dc->links[i], false); - } - } - } + if (dc->config.power_down_display_on_boot) + blank_all_dp_displays(dc, true); /* If taking control over from VBIOS, we may want to optimize our first * mode set, so we need to skip powering down pipes until we know which diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c index b132ebe..01a90ba 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c @@ -437,7 +437,7 @@ void dcn30_init_hw(struct dc *dc) struct dce_hwseq *hws = dc->hwseq; struct dc_bios *dcb = dc->ctx->dc_bios; struct resource_pool *res_pool = dc->res_pool; - int i, j; + int i; int edp_num; uint32_t backlight = MAX_BACKLIGHT_LEVEL; @@ -534,41 +534,8 @@ void dcn30_init_hw(struct dc *dc) hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false); /* we want to turn off all dp displays before doing detection */ - if (dc->config.power_down_display_on_boot) { - uint8_t dpcd_power_state = '\0'; - enum dc_status status = DC_ERROR_UNEXPECTED; - - for (i = 0; i < dc->link_count; i++) { - if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) - continue; - /* DP 2.0 states that LTTPR regs must be read first */ - dp_retrieve_lttpr_cap(dc->links[i]); - - /* if any of the displays are lit up turn them off */ - status = core_link_read_dpcd(dc->links[i], DP_SET_POWER, - &dpcd_power_state, sizeof(dpcd_power_state)); - if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) { - /* blank dp stream before power off receiver*/ - if (dc->links[i]->link_enc->funcs->get_dig_frontend) { - unsigned int fe; - - fe = dc->links[i]->link_enc->funcs->get_dig_frontend( - dc->links[i]->link_enc); - if (fe == ENGINE_ID_UNKNOWN) - continue; - - for (j = 0; j < dc->res_pool->stream_enc_count; j++) { - if (fe == dc->res_pool->stream_enc[j]->id) { - dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i], - dc->res_pool->stream_enc[j]); - break; - } - } - } - dp_receiver_power_ctrl(dc->links[i], false); - } - } - } + if (dc->config.power_down_display_on_boot) + blank_all_dp_displays(dc, true); /* If taking control over from VBIOS, we may want to optimize our first * mode set, so we need to skip powering down pipes until we know which diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c index 0713910..80f06ce 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c @@ -71,7 +71,7 @@ void dcn31_init_hw(struct dc *dc) struct dc_bios *dcb = dc->ctx->dc_bios; struct resource_pool *res_pool = dc->res_pool; uint32_t backlight = MAX_BACKLIGHT_LEVEL; - int i, j; + int i; int edp_num; if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks) @@ -175,40 +175,9 @@ void dcn31_init_hw(struct dc *dc) hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false); /* we want to turn off all dp displays before doing detection */ - if (dc->config.power_down_display_on_boot) { - uint8_t dpcd_power_state = '\0'; - enum dc_status status = DC_ERROR_UNEXPECTED; - - for (i = 0; i < dc->link_count; i++) { - if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) - continue; - - /* if any of the displays are lit up turn them off */ - status = core_link_read_dpcd(dc->links[i], DP_SET_POWER, - &dpcd_power_state, sizeof(dpcd_power_state)); - if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) { - /* blank dp stream before power off receiver*/ - if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY && - dc->links[i]->link_enc->funcs->get_dig_frontend) { - unsigned int fe; - - fe = dc->links[i]->link_enc->funcs->get_dig_frontend( - dc->links[i]->link_enc); - if (fe == ENGINE_ID_UNKNOWN) - continue; - - for (j = 0; j < dc->res_pool->stream_enc_count; j++) { - if (fe == dc->res_pool->stream_enc[j]->id) { - dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i], - dc->res_pool->stream_enc[j]); - break; - } - } - } - dp_receiver_power_ctrl(dc->links[i], false); - } - } - } + if (dc->config.power_down_display_on_boot) + blank_all_dp_displays(dc, true); + /* If taking control over from VBIOS, we may want to optimize our first * mode set, so we need to skip powering down pipes until we know which -- 2.7.4