From 6c5af7d2f886bf1f1de9cca3310b24a8d7ceaa47 Mon Sep 17 00:00:00 2001 From: hongao Date: Thu, 11 Nov 2021 11:32:07 +0800 Subject: drm/amdgpu: fix set scaling mode Full/Full aspect/Center not works on vga and dvi connectors amdgpu_connector_vga_get_modes missed function amdgpu_get_native_mode which assign amdgpu_encoder->native_mode with *preferred_mode result in amdgpu_encoder->native_mode.clock always be 0. That will cause amdgpu_connector_set_property returned early on: if ((rmx_type != DRM_MODE_SCALE_NONE) && (amdgpu_encoder->native_mode.clock == 0)) when we try to set scaling mode Full/Full aspect/Center. Add the missing function to amdgpu_connector_vga_get_mode can fix this. It also works on dvi connectors because amdgpu_connector_dvi_helper_funcs.get_mode use the same method. Signed-off-by: hongao Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c index b9c11c2b2885..0de66f59adb8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c @@ -827,6 +827,7 @@ static int amdgpu_connector_vga_get_modes(struct drm_connector *connector) amdgpu_connector_get_edid(connector); ret = amdgpu_connector_ddc_get_modes(connector); + amdgpu_get_native_mode(connector); return ret; } -- cgit v1.2.3-70-g09d2 From b220110e4cd442156f36e1d9b4914bb9e87b0d00 Mon Sep 17 00:00:00 2001 From: Zhou Qingyang Date: Fri, 3 Dec 2021 00:17:36 +0800 Subject: drm/amdgpu: Fix a NULL pointer dereference in amdgpu_connector_lcd_native_mode() In amdgpu_connector_lcd_native_mode(), the return value of drm_mode_duplicate() is assigned to mode, and there is a dereference of it in amdgpu_connector_lcd_native_mode(), which will lead to a NULL pointer dereference on failure of drm_mode_duplicate(). Fix this bug add a check of mode. This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs. Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug. Builds with CONFIG_DRM_AMDGPU=m show no new warnings, and our static analyzer no longer warns about this code. Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)") Signed-off-by: Zhou Qingyang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c index 0de66f59adb8..df1f9b88a53f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c @@ -387,6 +387,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder) native_mode->vdisplay != 0 && native_mode->clock != 0) { mode = drm_mode_duplicate(dev, native_mode); + if (!mode) + return NULL; + mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER; drm_mode_set_name(mode); @@ -401,6 +404,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder) * simpler. */ mode = drm_cvt_mode(dev, native_mode->hdisplay, native_mode->vdisplay, 60, true, false, false); + if (!mode) + return NULL; + mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER; DRM_DEBUG_KMS("Adding cvt approximation of native panel mode %s\n", mode->name); } -- cgit v1.2.3-70-g09d2 From 20543be93ca45968f344261c1a997177e51bd7e1 Mon Sep 17 00:00:00 2001 From: Claudio Suarez Date: Sun, 17 Oct 2021 13:34:58 +0200 Subject: drm/amdgpu: update drm_display_info correctly when the edid is read drm_display_info is updated by drm_get_edid() or drm_connector_update_edid_property(). In the amdgpu driver it is almost always updated when the edid is read in amdgpu_connector_get_edid(), but not always. Change amdgpu_connector_get_edid() and amdgpu_connector_free_edid() to keep drm_display_info updated. Reviewed-by: Harry Wentland Signed-off-by: Claudio Suarez Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 5 ++++- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +-- 2 files changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c index df1f9b88a53f..e5fc5a1ea394 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c @@ -315,8 +315,10 @@ static void amdgpu_connector_get_edid(struct drm_connector *connector) if (!amdgpu_connector->edid) { /* some laptops provide a hardcoded edid in rom for LCDs */ if (((connector->connector_type == DRM_MODE_CONNECTOR_LVDS) || - (connector->connector_type == DRM_MODE_CONNECTOR_eDP))) + (connector->connector_type == DRM_MODE_CONNECTOR_eDP))) { amdgpu_connector->edid = amdgpu_connector_get_hardcoded_edid(adev); + drm_connector_update_edid_property(connector, amdgpu_connector->edid); + } } } @@ -326,6 +328,7 @@ static void amdgpu_connector_free_edid(struct drm_connector *connector) kfree(amdgpu_connector->edid); amdgpu_connector->edid = NULL; + drm_connector_update_edid_property(connector, NULL); } static int amdgpu_connector_ddc_get_modes(struct drm_connector *connector) 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 0585ae44e555..151f3559e0ae 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2950,13 +2950,12 @@ void amdgpu_dm_update_connector_after_detect( aconnector->edid = (struct edid *)sink->dc_edid.raw_edid; - drm_connector_update_edid_property(connector, - aconnector->edid); if (aconnector->dc_link->aux_mode) drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux, aconnector->edid); } + drm_connector_update_edid_property(connector, aconnector->edid); amdgpu_dm_update_freesync_caps(connector, aconnector->edid); update_connector_ext_caps(aconnector); } else { -- cgit v1.2.3-70-g09d2 From 3c021931023a30316db415044531b116b85e6ebd Mon Sep 17 00:00:00 2001 From: Claudio Suarez Date: Sun, 17 Oct 2021 13:35:00 +0200 Subject: drm/amdgpu: replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi Once EDID is parsed, the monitor HDMI support information is available through drm_display_info.is_hdmi. The amdgpu driver still calls drm_detect_hdmi_monitor() to retrieve the same information, which is less efficient. Change to drm_display_info.is_hdmi This is a TODO task in Documentation/gpu/todo.rst Reviewed-by: Harry Wentland Signed-off-by: Claudio Suarez Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 12 ++++++------ drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c | 4 ++-- drivers/gpu/drm/amd/amdgpu/atombios_encoders.c | 6 +++--- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 19 +++++++------------ drivers/gpu/drm/amd/display/dc/core/dc.c | 2 +- drivers/gpu/drm/amd/display/dc/dm_helpers.h | 2 +- 7 files changed, 21 insertions(+), 26 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c index e5fc5a1ea394..c16a2704ced6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c @@ -108,7 +108,7 @@ int amdgpu_connector_get_monitor_bpc(struct drm_connector *connector) case DRM_MODE_CONNECTOR_DVII: case DRM_MODE_CONNECTOR_HDMIB: if (amdgpu_connector->use_digital) { - if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + if (connector->display_info.is_hdmi) { if (connector->display_info.bpc) bpc = connector->display_info.bpc; } @@ -116,7 +116,7 @@ int amdgpu_connector_get_monitor_bpc(struct drm_connector *connector) break; case DRM_MODE_CONNECTOR_DVID: case DRM_MODE_CONNECTOR_HDMIA: - if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + if (connector->display_info.is_hdmi) { if (connector->display_info.bpc) bpc = connector->display_info.bpc; } @@ -125,7 +125,7 @@ int amdgpu_connector_get_monitor_bpc(struct drm_connector *connector) dig_connector = amdgpu_connector->con_priv; if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) || (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) || - drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + connector->display_info.is_hdmi) { if (connector->display_info.bpc) bpc = connector->display_info.bpc; } @@ -149,7 +149,7 @@ int amdgpu_connector_get_monitor_bpc(struct drm_connector *connector) break; } - if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + if (connector->display_info.is_hdmi) { /* * Pre DCE-8 hw can't handle > 12 bpc, and more than 12 bpc doesn't make * much sense without support for > 12 bpc framebuffers. RGB 4:4:4 at @@ -1180,7 +1180,7 @@ static enum drm_mode_status amdgpu_connector_dvi_mode_valid(struct drm_connector (amdgpu_connector->connector_object_id == CONNECTOR_OBJECT_ID_DUAL_LINK_DVI_D) || (amdgpu_connector->connector_object_id == CONNECTOR_OBJECT_ID_HDMI_TYPE_B)) { return MODE_OK; - } else if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + } else if (connector->display_info.is_hdmi) { /* HDMI 1.3+ supports max clock of 340 Mhz */ if (mode->clock > 340000) return MODE_CLOCK_HIGH; @@ -1472,7 +1472,7 @@ static enum drm_mode_status amdgpu_connector_dp_mode_valid(struct drm_connector (amdgpu_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP)) { return amdgpu_atombios_dp_mode_valid_helper(connector, mode); } else { - if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + if (connector->display_info.is_hdmi) { /* HDMI 1.3+ supports max clock of 340 Mhz */ if (mode->clock > 340000) return MODE_CLOCK_HIGH; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index 5faf3ef28080..f52bc5da85d8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -1364,7 +1364,7 @@ bool amdgpu_display_crtc_scaling_mode_fixup(struct drm_crtc *crtc, if ((!(mode->flags & DRM_MODE_FLAG_INTERLACE)) && ((amdgpu_encoder->underscan_type == UNDERSCAN_ON) || ((amdgpu_encoder->underscan_type == UNDERSCAN_AUTO) && - drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) && + connector->display_info.is_hdmi && amdgpu_display_is_hdtv_mode(mode)))) { if (amdgpu_encoder->underscan_hborder != 0) amdgpu_crtc->h_border = amdgpu_encoder->underscan_hborder; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c index af4ef84e27a7..c96e458ed088 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c @@ -222,7 +222,7 @@ bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder, case DRM_MODE_CONNECTOR_HDMIB: if (amdgpu_connector->use_digital) { /* HDMI 1.3 supports up to 340 Mhz over single link */ - if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + if (connector->display_info.is_hdmi) { if (pixel_clock > 340000) return true; else @@ -244,7 +244,7 @@ bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder, return false; else { /* HDMI 1.3 supports up to 340 Mhz over single link */ - if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) { + if (connector->display_info.is_hdmi) { if (pixel_clock > 340000) return true; else diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c index 6134ed964027..a92d86e12718 100644 --- a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c +++ b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c @@ -469,7 +469,7 @@ int amdgpu_atombios_encoder_get_encoder_mode(struct drm_encoder *encoder) if (amdgpu_connector->use_digital && (amdgpu_connector->audio == AMDGPU_AUDIO_ENABLE)) return ATOM_ENCODER_MODE_HDMI; - else if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) && + else if (connector->display_info.is_hdmi && (amdgpu_connector->audio == AMDGPU_AUDIO_AUTO)) return ATOM_ENCODER_MODE_HDMI; else if (amdgpu_connector->use_digital) @@ -488,7 +488,7 @@ int amdgpu_atombios_encoder_get_encoder_mode(struct drm_encoder *encoder) if (amdgpu_audio != 0) { if (amdgpu_connector->audio == AMDGPU_AUDIO_ENABLE) return ATOM_ENCODER_MODE_HDMI; - else if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) && + else if (connector->display_info.is_hdmi && (amdgpu_connector->audio == AMDGPU_AUDIO_AUTO)) return ATOM_ENCODER_MODE_HDMI; else @@ -506,7 +506,7 @@ int amdgpu_atombios_encoder_get_encoder_mode(struct drm_encoder *encoder) } else if (amdgpu_audio != 0) { if (amdgpu_connector->audio == AMDGPU_AUDIO_ENABLE) return ATOM_ENCODER_MODE_HDMI; - else if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) && + else if (connector->display_info.is_hdmi && (amdgpu_connector->audio == AMDGPU_AUDIO_AUTO)) return ATOM_ENCODER_MODE_HDMI; else diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 54c75866c000..29f07c26d080 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -83,10 +83,12 @@ static int amdgpu_dm_patch_edid_caps(struct dc_edid_caps *edid_caps) * void * */ enum dc_edid_status dm_helpers_parse_edid_caps( - struct dc_context *ctx, + struct dc_link *link, const struct dc_edid *edid, struct dc_edid_caps *edid_caps) { + struct amdgpu_dm_connector *aconnector = link->priv; + struct drm_connector *connector = &aconnector->base; struct edid *edid_buf = (struct edid *) edid->raw_edid; struct cea_sad *sads; int sad_count = -1; @@ -114,8 +116,7 @@ enum dc_edid_status dm_helpers_parse_edid_caps( edid_caps->display_name, AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS); - edid_caps->edid_hdmi = drm_detect_hdmi_monitor( - (struct edid *) edid->raw_edid); + edid_caps->edid_hdmi = connector->display_info.is_hdmi; sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads); if (sad_count <= 0) @@ -647,14 +648,8 @@ enum dc_edid_status dm_helpers_read_local_edid( /* We don't need the original edid anymore */ kfree(edid); - /* connector->display_info will be parsed from EDID and saved - * into drm_connector->display_info from edid by call stack - * below: - * drm_parse_ycbcr420_deep_color_info - * drm_parse_hdmi_forum_vsdb - * drm_parse_cea_ext - * drm_add_display_info - * drm_connector_update_edid_property + /* connector->display_info is parsed from EDID and saved + * into drm_connector->display_info * * drm_connector->display_info will be used by amdgpu_dm funcs, * like fill_stream_properties_from_drm_display_mode @@ -662,7 +657,7 @@ enum dc_edid_status dm_helpers_read_local_edid( amdgpu_dm_update_connector_after_detect(aconnector); edid_status = dm_helpers_parse_edid_caps( - ctx, + link, &sink->dc_edid, &sink->edid_caps); diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 7ee548ffbdaf..598739182461 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -3448,7 +3448,7 @@ struct dc_sink *dc_link_add_remote_sink( goto fail_add_sink; edid_status = dm_helpers_parse_edid_caps( - link->ctx, + link, &dc_sink->dc_edid, &dc_sink->edid_caps); diff --git a/drivers/gpu/drm/amd/display/dc/dm_helpers.h b/drivers/gpu/drm/amd/display/dc/dm_helpers.h index 0fe66b080a03..7f94e3f70d7f 100644 --- a/drivers/gpu/drm/amd/display/dc/dm_helpers.h +++ b/drivers/gpu/drm/amd/display/dc/dm_helpers.h @@ -59,7 +59,7 @@ void dm_helpers_free_gpu_mem( void *pvMem); enum dc_edid_status dm_helpers_parse_edid_caps( - struct dc_context *ctx, + struct dc_link *link, const struct dc_edid *edid, struct dc_edid_caps *edid_caps); -- cgit v1.2.3-70-g09d2