From: Hersen Wu <[email protected]> RV1 support only USB-C active DP-2-HDMI dongle. HPD short pulse is generated only for DP signal.
When processing HPD short pulse, it must be DP active dongle. No need for I2C-Over-AUX detection. v2: Add description Signed-off-by: Hersen Wu <[email protected]> Reviewed-by: Tony Cheng <[email protected]> Acked-by: Harry Wentland <[email protected]> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 9 ++++--- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 32 +++++++++++++++-------- drivers/gpu/drm/amd/display/dc/dc.h | 8 +++++- 3 files changed, 33 insertions(+), 16 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 7a408d753be8..9b5158cceece 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -639,7 +639,7 @@ int amdgpu_dm_display_resume(struct amdgpu_device *adev ) continue; mutex_lock(&aconnector->hpd_lock); - dc_link_detect(aconnector->dc_link, false); + dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD); aconnector->dc_sink = NULL; amdgpu_dm_update_connector_after_detect(aconnector); mutex_unlock(&aconnector->hpd_lock); @@ -870,7 +870,7 @@ static void handle_hpd_irq(void *param) * since (for MST case) MST does this in it's own context. */ mutex_lock(&aconnector->hpd_lock); - if (dc_link_detect(aconnector->dc_link, false)) { + if (dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD)) { amdgpu_dm_update_connector_after_detect(aconnector); @@ -980,7 +980,7 @@ static void handle_hpd_rx_irq(void *param) if (dc_link_handle_hpd_rx_irq(aconnector->dc_link, NULL) && !is_mst_root_connector) { /* Downstream Port status changed. */ - if (dc_link_detect(aconnector->dc_link, false)) { + if (dc_link_detect(aconnector->dc_link, DETECT_REASON_HPDRX)) { amdgpu_dm_update_connector_after_detect(aconnector); @@ -1368,7 +1368,8 @@ int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev) goto fail_free_encoder; } - if (dc_link_detect(dc_get_link_at_index(dm->dc, i), true)) + if (dc_link_detect(dc_get_link_at_index(dm->dc, i), + DETECT_REASON_BOOT)) amdgpu_dm_update_connector_after_detect(aconnector); } 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 cea8dafd2edc..845ec421d861 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -355,7 +355,9 @@ static bool is_dp_sink_present(struct dc_link *link) * @brief * Detect output sink type */ -static enum signal_type link_detect_sink(struct dc_link *link) +static enum signal_type link_detect_sink( + struct dc_link *link, + enum dc_detect_reason reason) { enum signal_type result = get_basic_signal_type( link->link_enc->id, link->link_id); @@ -388,12 +390,17 @@ static enum signal_type link_detect_sink(struct dc_link *link) } break; case CONNECTOR_ID_DISPLAY_PORT: { - - /* Check whether DP signal detected: if not - - * we assume signal is DVI; it could be corrected - * to HDMI after dongle detection */ - if (!is_dp_sink_present(link)) - result = SIGNAL_TYPE_DVI_SINGLE_LINK; + /* DP HPD short pulse. Passive DP dongle will not + * have short pulse + */ + if (reason != DETECT_REASON_HPDRX) { + /* Check whether DP signal detected: if not - + * we assume signal is DVI; it could be corrected + * to HDMI after dongle detection + */ + if (!is_dp_sink_present(link)) + result = SIGNAL_TYPE_DVI_SINGLE_LINK; + } } break; default: @@ -460,9 +467,10 @@ static void detect_dp( struct display_sink_capability *sink_caps, bool *converter_disable_audio, struct audio_support *audio_support, - bool boot) + enum dc_detect_reason reason) { - sink_caps->signal = link_detect_sink(link); + bool boot = false; + sink_caps->signal = link_detect_sink(link, reason); sink_caps->transaction_type = get_ddc_transaction_type(sink_caps->signal); @@ -513,6 +521,8 @@ static void detect_dp( * Need check ->sink usages in case ->sink = NULL * TODO: s3 resume check */ + if (reason == DETECT_REASON_BOOT) + boot = true; if (dm_helpers_dp_mst_start_top_mgr( link->ctx, @@ -531,7 +541,7 @@ static void detect_dp( } } -bool dc_link_detect(struct dc_link *link, bool boot) +bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason) { struct dc_sink_init_data sink_init_data = { 0 }; struct display_sink_capability sink_caps = { 0 }; @@ -596,7 +606,7 @@ bool dc_link_detect(struct dc_link *link, bool boot) link, &sink_caps, &converter_disable_audio, - aud_support, boot); + aud_support, reason); /* Active dongle downstream unplug */ if (link->type == dc_connection_active_dongle diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index f005add1aba3..bf2d42561362 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -884,7 +884,13 @@ bool dc_link_setup_psr(struct dc_link *dc_link, * true otherwise. True meaning further action is required (status update * and OS notification). */ -bool dc_link_detect(struct dc_link *dc_link, bool boot); +enum dc_detect_reason { + DETECT_REASON_BOOT, + DETECT_REASON_HPD, + DETECT_REASON_HPDRX, +}; + +bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason); /* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt). * Return: -- 2.11.0 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
