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[87.205.5.123]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-654535c4912sm8989806a12.30.2026.01.18.17.11.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Jan 2026 17:11:50 -0800 (PST) From: =?UTF-8?q?Tomasz=20Paku=C5=82a?= To: alexander.deucher@amd.com, harry.wentland@amd.com, sunpeng.li@amd.com Cc: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, siqueira@igalia.com, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, tomasz.pakula.oficjalny@gmail.com, bernhard.berger@gmail.com Subject: [PATCH 02/17] drm/amd/display: Refactor amdgpu_dm_update_freesync_caps() Date: Mon, 19 Jan 2026 02:11:31 +0100 Message-ID: <20260119011146.62302-3-tomasz.pakula.oficjalny@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119011146.62302-1-tomasz.pakula.oficjalny@gmail.com> References: <20260119011146.62302-1-tomasz.pakula.oficjalny@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable [Why] This function started to get very messy and hard to follow. [How] Eject some functionality to separate functions and simplify greatly. Signed-off-by: Tomasz Paku=C5=82a --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 119 +++++++++++------- 1 file changed, 72 insertions(+), 47 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gp= u/drm/amd/display/amdgpu_dm/amdgpu_dm.c index a0d23853b8fc..d83c65dc93d7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -13096,8 +13096,8 @@ static void parse_edid_displayid_vrr(struct drm_con= nector *connector, } } =20 -static int parse_amd_vsdb(struct amdgpu_dm_connector *aconnector, - const struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info) +static int parse_amd_vsdb_did(struct amdgpu_dm_connector *aconnector, + const struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info) { u8 *edid_ext =3D NULL; int i; @@ -13134,9 +13134,9 @@ static int parse_amd_vsdb(struct amdgpu_dm_connecto= r *aconnector, return false; } =20 -static int parse_hdmi_amd_vsdb(struct amdgpu_dm_connector *aconnector, - const struct edid *edid, - struct amdgpu_hdmi_vsdb_info *vsdb_info) +static int parse_amd_vsdb_cea(struct amdgpu_dm_connector *aconnector, + const struct edid *edid, + struct amdgpu_hdmi_vsdb_info *vsdb_info) { u8 *edid_ext =3D NULL; int i; @@ -13166,6 +13166,44 @@ static int parse_hdmi_amd_vsdb(struct amdgpu_dm_co= nnector *aconnector, return valid_vsdb_found ? i : -ENODEV; } =20 +static bool is_monitor_range_invalid(struct drm_connector *conn) +{ + return conn->display_info.monitor_range.min_vfreq =3D=3D 0 || + conn->display_info.monitor_range.max_vfreq =3D=3D 0; +} + +/** + * Returns true if (max_vfreq - min_vfreq) > 10 + */ +static bool is_freesync_capable(struct drm_monitor_range_info *range) +{ + return (range->max_vfreq - range->min_vfreq) > 10; +} + +static void monitor_range_from_vsdb(struct drm_connector *conn, + struct amdgpu_hdmi_vsdb_info *vsdb) +{ + struct drm_monitor_range_info *range =3D &conn->display_info.monitor_rang= e; + + range->min_vfreq =3D vsdb->min_refresh_rate_hz; + range->max_vfreq =3D vsdb->max_refresh_rate_hz; +} + +/** + * Returns true if connector is capable of freesync + * Optionally, can fetch the range from AMD vsdb + */ +static bool copy_range_to_amdgpu_connector(struct drm_connector *conn) +{ + struct amdgpu_dm_connector *aconn =3D to_amdgpu_dm_connector(conn); + struct drm_monitor_range_info *range =3D &conn->display_info.monitor_rang= e; + + aconn->min_vfreq =3D range->min_vfreq; + aconn->max_vfreq =3D range->max_vfreq; + + return is_freesync_capable(range); +} + /** * amdgpu_dm_update_freesync_caps - Update Freesync capabilities * @@ -13180,15 +13218,18 @@ static int parse_hdmi_amd_vsdb(struct amdgpu_dm_c= onnector *aconnector, void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, const struct drm_edid *drm_edid) { - int i =3D 0; struct amdgpu_dm_connector *amdgpu_dm_connector =3D to_amdgpu_dm_connector(connector); struct dm_connector_state *dm_con_state =3D NULL; struct dc_sink *sink; struct amdgpu_device *adev =3D drm_to_adev(connector->dev); struct amdgpu_hdmi_vsdb_info vsdb_info =3D {0}; + struct amdgpu_hdmi_vsdb_info vsdb_did =3D {0}; + struct dpcd_caps dpcd_caps =3D {0}; const struct edid *edid; bool freesync_capable =3D false; + bool valid_vsdb_cea =3D false; + bool vsdb_freesync =3D false; enum adaptive_sync_type as_type =3D ADAPTIVE_SYNC_TYPE_NONE; =20 if (!connector->state) { @@ -13218,62 +13259,46 @@ void amdgpu_dm_update_freesync_caps(struct drm_co= nnector *connector, goto update; =20 edid =3D drm_edid_raw(drm_edid); // FIXME: Get rid of drm_edid_raw() + valid_vsdb_cea =3D parse_amd_vsdb_cea(amdgpu_dm_connector, edid, &vsdb_in= fo) >=3D 0; + vsdb_freesync =3D valid_vsdb_cea && vsdb_info.freesync_supported; + if (amdgpu_dm_connector->dc_link) + dpcd_caps =3D amdgpu_dm_connector->dc_link->dpcd_caps; =20 /* Some eDP panels only have the refresh rate range info in DisplayID */ - if ((connector->display_info.monitor_range.min_vfreq =3D=3D 0 || - connector->display_info.monitor_range.max_vfreq =3D=3D 0)) + if (is_monitor_range_invalid(connector)) parse_edid_displayid_vrr(connector, edid); =20 - if (edid && (sink->sink_signal =3D=3D SIGNAL_TYPE_DISPLAY_PORT || - sink->sink_signal =3D=3D SIGNAL_TYPE_EDP)) { - if (amdgpu_dm_connector->dc_link && - amdgpu_dm_connector->dc_link->dpcd_caps.allow_invalid_MSA_timing_par= am) { - amdgpu_dm_connector->min_vfreq =3D connector->display_info.monitor_rang= e.min_vfreq; - amdgpu_dm_connector->max_vfreq =3D connector->display_info.monitor_rang= e.max_vfreq; - if (amdgpu_dm_connector->max_vfreq - amdgpu_dm_connector->min_vfreq > 1= 0) - freesync_capable =3D true; - } + if (sink->sink_signal =3D=3D SIGNAL_TYPE_DISPLAY_PORT || + sink->sink_signal =3D=3D SIGNAL_TYPE_EDP) { =20 - parse_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info); + if (dpcd_caps.allow_invalid_MSA_timing_param) + freesync_capable =3D copy_range_to_amdgpu_connector(connector); =20 - if (vsdb_info.replay_mode) { - amdgpu_dm_connector->vsdb_info.replay_mode =3D vsdb_info.replay_mode; - amdgpu_dm_connector->vsdb_info.amd_vsdb_version =3D vsdb_info.amd_vsdb_= version; + /* eDP */ + if (edid) + parse_amd_vsdb_did(amdgpu_dm_connector, edid, &vsdb_did); + + if (vsdb_did.replay_mode) { + amdgpu_dm_connector->vsdb_info.replay_mode =3D vsdb_did.replay_mode; + amdgpu_dm_connector->vsdb_info.amd_vsdb_version =3D vsdb_did.amd_vsdb_v= ersion; amdgpu_dm_connector->as_type =3D ADAPTIVE_SYNC_TYPE_EDP; } =20 - } else if (drm_edid && sink->sink_signal =3D=3D SIGNAL_TYPE_HDMI_TYPE_A) { - i =3D parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info); - if (i >=3D 0 && vsdb_info.freesync_supported) { - amdgpu_dm_connector->min_vfreq =3D vsdb_info.min_refresh_rate_hz; - amdgpu_dm_connector->max_vfreq =3D vsdb_info.max_refresh_rate_hz; - if (amdgpu_dm_connector->max_vfreq - amdgpu_dm_connector->min_vfreq > 1= 0) - freesync_capable =3D true; - - connector->display_info.monitor_range.min_vfreq =3D vsdb_info.min_refre= sh_rate_hz; - connector->display_info.monitor_range.max_vfreq =3D vsdb_info.max_refre= sh_rate_hz; - } + } else if (sink->sink_signal =3D=3D SIGNAL_TYPE_HDMI_TYPE_A && vsdb_frees= ync) { + monitor_range_from_vsdb(connector, &vsdb_info); + freesync_capable =3D copy_range_to_amdgpu_connector(connector); } =20 if (amdgpu_dm_connector->dc_link) as_type =3D dm_get_adaptive_sync_support_type(amdgpu_dm_connector->dc_li= nk); =20 - if (as_type =3D=3D FREESYNC_TYPE_PCON_IN_WHITELIST) { - i =3D parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info); - if (i >=3D 0 && vsdb_info.freesync_supported && vsdb_info.amd_vsdb_versi= on > 0) { + if (as_type =3D=3D FREESYNC_TYPE_PCON_IN_WHITELIST && vsdb_freesync) { + amdgpu_dm_connector->pack_sdp_v1_3 =3D true; + amdgpu_dm_connector->as_type =3D as_type; + amdgpu_dm_connector->vsdb_info =3D vsdb_info; =20 - amdgpu_dm_connector->pack_sdp_v1_3 =3D true; - amdgpu_dm_connector->as_type =3D as_type; - amdgpu_dm_connector->vsdb_info =3D vsdb_info; - - amdgpu_dm_connector->min_vfreq =3D vsdb_info.min_refresh_rate_hz; - amdgpu_dm_connector->max_vfreq =3D vsdb_info.max_refresh_rate_hz; - if (amdgpu_dm_connector->max_vfreq - amdgpu_dm_connector->min_vfreq > 1= 0) - freesync_capable =3D true; - - connector->display_info.monitor_range.min_vfreq =3D vsdb_info.min_refre= sh_rate_hz; - connector->display_info.monitor_range.max_vfreq =3D vsdb_info.max_refre= sh_rate_hz; - } + monitor_range_from_vsdb(connector, &vsdb_info); + freesync_capable =3D copy_range_to_amdgpu_connector(connector); } =20 update: --=20 2.52.0