| Message ID | 20200303000859.29339-1-manasi.d.navare@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3] drm/dp: Add function to parse EDID descriptors for adaptive sync limits | expand |
On Mon, Mar 02, 2020 at 04:08:59PM -0800, Manasi Navare wrote: > Adaptive Sync is a VESA feature so add a DRM core helper to parse > the EDID's detailed descritors to obtain the adaptive sync monitor range. > Store this info as part fo drm_display_info so it can be used > across all drivers. > This part of the code is stripped out of amdgpu's function > amdgpu_dm_update_freesync_caps() to make it generic and be used > across all DRM drivers > > v3: > * Remove the edid parsing restriction for just DP (Nicholas) > * Use drm_for_each_detailed_block (Ville) > * Make the drm_get_adaptive_sync_range function static (Harry, Jani) > v2: > * Change vmin and vmax to use u8 (Ville) > * Dont store pixel clock since that is just a max dotclock > and not related to VRR mode (Manasi) > > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> > Cc: Harry Wentland <harry.wentland@amd.com> > Cc: Clinton A Taylor <clinton.a.taylor@intel.com> > Cc: Kazlauskas, Nicholas <Nicholas.Kazlauskas@amd.com> > Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> > --- > drivers/gpu/drm/drm_edid.c | 44 +++++++++++++++++++++++++++++++++++++ > include/drm/drm_connector.h | 22 +++++++++++++++++++ > 2 files changed, 66 insertions(+) > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > index ad41764a4ebe..e3f152180b6b 100644 > --- a/drivers/gpu/drm/drm_edid.c > +++ b/drivers/gpu/drm/drm_edid.c > @@ -4938,6 +4938,47 @@ static void drm_parse_cea_ext(struct drm_connector *connector, > } > } > > +static > +void get_adaptive_sync_range(struct detailed_timing *timing, > + void *info_adaptive_sync) > +{ > + struct drm_adaptive_sync_info *adaptive_sync = info_adaptive_sync; > + const struct detailed_non_pixel *data = &timing->data.other_data; > + const struct detailed_data_monitor_range *range = &data->data.range; > + > + if (data->type != EDID_DETAIL_MONITOR_RANGE)a is_display_descriptor() > + return; > + > + /* > + * Check for flag range limits only. If flag == 1 then > + * no additional timing information provided. > + * Default GTF, GTF Secondary curve and CVT are not > + * supported > + */ > + if (range->flags != 1) Pls name the flags. > + return; > + > + adaptive_sync->min_vfreq = range->min_vfreq; > + adaptive_sync->max_vfreq = range->max_vfreq; > +} > + > +static > +void drm_get_adaptive_sync_range(struct drm_connector *connector, > + const struct edid *edid) > +{ > + struct drm_display_info *info = &connector->display_info; > + > + if (!version_greater(edid, 1, 1)) > + return; > + > + drm_for_each_detailed_block((u8 *)edid, get_adaptive_sync_range, > + &info->adaptive_sync); > + > + DRM_DEBUG_KMS("Adaptive Sync refresh rate range is %d Hz - %d Hz\n", > + info->adaptive_sync.min_vfreq, > + info->adaptive_sync.max_vfreq); > +} > + > /* A connector has no EDID information, so we've got no EDID to compute quirks from. Reset > * all of the values which would have been set from EDID > */ > @@ -4960,6 +5001,7 @@ drm_reset_display_info(struct drm_connector *connector) > memset(&info->hdmi, 0, sizeof(info->hdmi)); > > info->non_desktop = 0; > + memset(&info->adaptive_sync, 0, sizeof(info->adaptive_sync)); > } > > u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid) > @@ -4975,6 +5017,8 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi > > info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP); > > + drm_get_adaptive_sync_range(connector, edid); > + > DRM_DEBUG_KMS("non_desktop set to %d\n", info->non_desktop); > > if (edid->revision < 3) > diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h > index 0df7a95ca5d9..2b22c0fa42c4 100644 > --- a/include/drm/drm_connector.h > +++ b/include/drm/drm_connector.h > @@ -254,6 +254,23 @@ enum drm_panel_orientation { > DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, > }; > > +/** > + * struct drm_adaptive_sync_info - Panel's Adaptive Sync capabilities for > + * &drm_display_info > + * > + * This struct is used to store a Panel's Adaptive Sync capabilities > + * as parsed from EDID's detailed monitor range descriptor block. > + * > + * @min_vfreq: This is the min supported refresh rate in Hz from > + * EDID's detailed monitor range. > + * @max_vfreq: This is the max supported refresh rate in Hz from > + * EDID's detailed monitor range > + */ > +struct drm_adaptive_sync_info { > + u8 min_vfreq; > + u8 max_vfreq; > +}; > + > /* > * This is a consolidated colorimetry list supported by HDMI and > * DP protocol standard. The respective connectors will register > @@ -473,6 +490,11 @@ struct drm_display_info { > * @non_desktop: Non desktop display (HMD). > */ > bool non_desktop; > + > + /** > + * @adaptive_sync: Adaptive Sync capabilities of the DP/eDP sink > + */ > + struct drm_adaptive_sync_info adaptive_sync; > }; > > int drm_display_info_set_bus_formats(struct drm_display_info *info, > -- > 2.19.1
On Tue, Mar 03, 2020 at 03:42:12PM +0200, Ville Syrjälä wrote: > On Mon, Mar 02, 2020 at 04:08:59PM -0800, Manasi Navare wrote: > > Adaptive Sync is a VESA feature so add a DRM core helper to parse > > the EDID's detailed descritors to obtain the adaptive sync monitor range. > > Store this info as part fo drm_display_info so it can be used > > across all drivers. > > This part of the code is stripped out of amdgpu's function > > amdgpu_dm_update_freesync_caps() to make it generic and be used > > across all DRM drivers > > > > v3: > > * Remove the edid parsing restriction for just DP (Nicholas) > > * Use drm_for_each_detailed_block (Ville) > > * Make the drm_get_adaptive_sync_range function static (Harry, Jani) > > v2: > > * Change vmin and vmax to use u8 (Ville) > > * Dont store pixel clock since that is just a max dotclock > > and not related to VRR mode (Manasi) > > > > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> > > Cc: Harry Wentland <harry.wentland@amd.com> > > Cc: Clinton A Taylor <clinton.a.taylor@intel.com> > > Cc: Kazlauskas, Nicholas <Nicholas.Kazlauskas@amd.com> > > Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> > > --- > > drivers/gpu/drm/drm_edid.c | 44 +++++++++++++++++++++++++++++++++++++ > > include/drm/drm_connector.h | 22 +++++++++++++++++++ > > 2 files changed, 66 insertions(+) > > > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > > index ad41764a4ebe..e3f152180b6b 100644 > > --- a/drivers/gpu/drm/drm_edid.c > > +++ b/drivers/gpu/drm/drm_edid.c > > @@ -4938,6 +4938,47 @@ static void drm_parse_cea_ext(struct drm_connector *connector, > > } > > } > > > > +static > > +void get_adaptive_sync_range(struct detailed_timing *timing, > > + void *info_adaptive_sync) > > +{ > > + struct drm_adaptive_sync_info *adaptive_sync = info_adaptive_sync; > > + const struct detailed_non_pixel *data = &timing->data.other_data; > > + const struct detailed_data_monitor_range *range = &data->data.range; > > + > > + if (data->type != EDID_DETAIL_MONITOR_RANGE)a > > is_display_descriptor() Will change to use is_display_descriptor() > > > + return; > > + > > + /* > > + * Check for flag range limits only. If flag == 1 then > > + * no additional timing information provided. > > + * Default GTF, GTF Secondary curve and CVT are not > > + * supported > > + */ > > + if (range->flags != 1) > > Pls name the flags. I dont see that we have any enum with the flag names, do you want me to define them looking at EDID spec? Manasi > > > + return; > > + > > + adaptive_sync->min_vfreq = range->min_vfreq; > > + adaptive_sync->max_vfreq = range->max_vfreq; > > +} > > + > > +static > > +void drm_get_adaptive_sync_range(struct drm_connector *connector, > > + const struct edid *edid) > > +{ > > + struct drm_display_info *info = &connector->display_info; > > + > > + if (!version_greater(edid, 1, 1)) > > + return; > > + > > + drm_for_each_detailed_block((u8 *)edid, get_adaptive_sync_range, > > + &info->adaptive_sync); > > + > > + DRM_DEBUG_KMS("Adaptive Sync refresh rate range is %d Hz - %d Hz\n", > > + info->adaptive_sync.min_vfreq, > > + info->adaptive_sync.max_vfreq); > > +} > > + > > /* A connector has no EDID information, so we've got no EDID to compute quirks from. Reset > > * all of the values which would have been set from EDID > > */ > > @@ -4960,6 +5001,7 @@ drm_reset_display_info(struct drm_connector *connector) > > memset(&info->hdmi, 0, sizeof(info->hdmi)); > > > > info->non_desktop = 0; > > + memset(&info->adaptive_sync, 0, sizeof(info->adaptive_sync)); > > } > > > > u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid) > > @@ -4975,6 +5017,8 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi > > > > info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP); > > > > + drm_get_adaptive_sync_range(connector, edid); > > + > > DRM_DEBUG_KMS("non_desktop set to %d\n", info->non_desktop); > > > > if (edid->revision < 3) > > diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h > > index 0df7a95ca5d9..2b22c0fa42c4 100644 > > --- a/include/drm/drm_connector.h > > +++ b/include/drm/drm_connector.h > > @@ -254,6 +254,23 @@ enum drm_panel_orientation { > > DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, > > }; > > > > +/** > > + * struct drm_adaptive_sync_info - Panel's Adaptive Sync capabilities for > > + * &drm_display_info > > + * > > + * This struct is used to store a Panel's Adaptive Sync capabilities > > + * as parsed from EDID's detailed monitor range descriptor block. > > + * > > + * @min_vfreq: This is the min supported refresh rate in Hz from > > + * EDID's detailed monitor range. > > + * @max_vfreq: This is the max supported refresh rate in Hz from > > + * EDID's detailed monitor range > > + */ > > +struct drm_adaptive_sync_info { > > + u8 min_vfreq; > > + u8 max_vfreq; > > +}; > > + > > /* > > * This is a consolidated colorimetry list supported by HDMI and > > * DP protocol standard. The respective connectors will register > > @@ -473,6 +490,11 @@ struct drm_display_info { > > * @non_desktop: Non desktop display (HMD). > > */ > > bool non_desktop; > > + > > + /** > > + * @adaptive_sync: Adaptive Sync capabilities of the DP/eDP sink > > + */ > > + struct drm_adaptive_sync_info adaptive_sync; > > }; > > > > int drm_display_info_set_bus_formats(struct drm_display_info *info, > > -- > > 2.19.1 > > -- > Ville Syrjälä > Intel > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel
On Wed, Mar 04, 2020 at 09:36:06AM -0800, Manasi Navare wrote: > On Tue, Mar 03, 2020 at 03:42:12PM +0200, Ville Syrjälä wrote: > > On Mon, Mar 02, 2020 at 04:08:59PM -0800, Manasi Navare wrote: > > > Adaptive Sync is a VESA feature so add a DRM core helper to parse > > > the EDID's detailed descritors to obtain the adaptive sync monitor range. > > > Store this info as part fo drm_display_info so it can be used > > > across all drivers. > > > This part of the code is stripped out of amdgpu's function > > > amdgpu_dm_update_freesync_caps() to make it generic and be used > > > across all DRM drivers > > > > > > v3: > > > * Remove the edid parsing restriction for just DP (Nicholas) > > > * Use drm_for_each_detailed_block (Ville) > > > * Make the drm_get_adaptive_sync_range function static (Harry, Jani) > > > v2: > > > * Change vmin and vmax to use u8 (Ville) > > > * Dont store pixel clock since that is just a max dotclock > > > and not related to VRR mode (Manasi) > > > > > > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> > > > Cc: Harry Wentland <harry.wentland@amd.com> > > > Cc: Clinton A Taylor <clinton.a.taylor@intel.com> > > > Cc: Kazlauskas, Nicholas <Nicholas.Kazlauskas@amd.com> > > > Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> > > > --- > > > drivers/gpu/drm/drm_edid.c | 44 +++++++++++++++++++++++++++++++++++++ > > > include/drm/drm_connector.h | 22 +++++++++++++++++++ > > > 2 files changed, 66 insertions(+) > > > > > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > > > index ad41764a4ebe..e3f152180b6b 100644 > > > --- a/drivers/gpu/drm/drm_edid.c > > > +++ b/drivers/gpu/drm/drm_edid.c > > > @@ -4938,6 +4938,47 @@ static void drm_parse_cea_ext(struct drm_connector *connector, > > > } > > > } > > > > > > +static > > > +void get_adaptive_sync_range(struct detailed_timing *timing, > > > + void *info_adaptive_sync) > > > +{ > > > + struct drm_adaptive_sync_info *adaptive_sync = info_adaptive_sync; > > > + const struct detailed_non_pixel *data = &timing->data.other_data; > > > + const struct detailed_data_monitor_range *range = &data->data.range; > > > + > > > + if (data->type != EDID_DETAIL_MONITOR_RANGE)a > > > > is_display_descriptor() > > Will change to use is_display_descriptor() > > > > > > + return; > > > + > > > + /* > > > + * Check for flag range limits only. If flag == 1 then > > > + * no additional timing information provided. > > > + * Default GTF, GTF Secondary curve and CVT are not > > > + * supported > > > + */ > > > + if (range->flags != 1) > > > > Pls name the flags. > > I dont see that we have any enum with the flag names, do you want me to define them looking > at EDID spec? What else?
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index ad41764a4ebe..e3f152180b6b 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4938,6 +4938,47 @@ static void drm_parse_cea_ext(struct drm_connector *connector, } } +static +void get_adaptive_sync_range(struct detailed_timing *timing, + void *info_adaptive_sync) +{ + struct drm_adaptive_sync_info *adaptive_sync = info_adaptive_sync; + const struct detailed_non_pixel *data = &timing->data.other_data; + const struct detailed_data_monitor_range *range = &data->data.range; + + if (data->type != EDID_DETAIL_MONITOR_RANGE) + return; + + /* + * Check for flag range limits only. If flag == 1 then + * no additional timing information provided. + * Default GTF, GTF Secondary curve and CVT are not + * supported + */ + if (range->flags != 1) + return; + + adaptive_sync->min_vfreq = range->min_vfreq; + adaptive_sync->max_vfreq = range->max_vfreq; +} + +static +void drm_get_adaptive_sync_range(struct drm_connector *connector, + const struct edid *edid) +{ + struct drm_display_info *info = &connector->display_info; + + if (!version_greater(edid, 1, 1)) + return; + + drm_for_each_detailed_block((u8 *)edid, get_adaptive_sync_range, + &info->adaptive_sync); + + DRM_DEBUG_KMS("Adaptive Sync refresh rate range is %d Hz - %d Hz\n", + info->adaptive_sync.min_vfreq, + info->adaptive_sync.max_vfreq); +} + /* A connector has no EDID information, so we've got no EDID to compute quirks from. Reset * all of the values which would have been set from EDID */ @@ -4960,6 +5001,7 @@ drm_reset_display_info(struct drm_connector *connector) memset(&info->hdmi, 0, sizeof(info->hdmi)); info->non_desktop = 0; + memset(&info->adaptive_sync, 0, sizeof(info->adaptive_sync)); } u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid) @@ -4975,6 +5017,8 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP); + drm_get_adaptive_sync_range(connector, edid); + DRM_DEBUG_KMS("non_desktop set to %d\n", info->non_desktop); if (edid->revision < 3) diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 0df7a95ca5d9..2b22c0fa42c4 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -254,6 +254,23 @@ enum drm_panel_orientation { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, }; +/** + * struct drm_adaptive_sync_info - Panel's Adaptive Sync capabilities for + * &drm_display_info + * + * This struct is used to store a Panel's Adaptive Sync capabilities + * as parsed from EDID's detailed monitor range descriptor block. + * + * @min_vfreq: This is the min supported refresh rate in Hz from + * EDID's detailed monitor range. + * @max_vfreq: This is the max supported refresh rate in Hz from + * EDID's detailed monitor range + */ +struct drm_adaptive_sync_info { + u8 min_vfreq; + u8 max_vfreq; +}; + /* * This is a consolidated colorimetry list supported by HDMI and * DP protocol standard. The respective connectors will register @@ -473,6 +490,11 @@ struct drm_display_info { * @non_desktop: Non desktop display (HMD). */ bool non_desktop; + + /** + * @adaptive_sync: Adaptive Sync capabilities of the DP/eDP sink + */ + struct drm_adaptive_sync_info adaptive_sync; }; int drm_display_info_set_bus_formats(struct drm_display_info *info,
Adaptive Sync is a VESA feature so add a DRM core helper to parse the EDID's detailed descritors to obtain the adaptive sync monitor range. Store this info as part fo drm_display_info so it can be used across all drivers. This part of the code is stripped out of amdgpu's function amdgpu_dm_update_freesync_caps() to make it generic and be used across all DRM drivers v3: * Remove the edid parsing restriction for just DP (Nicholas) * Use drm_for_each_detailed_block (Ville) * Make the drm_get_adaptive_sync_range function static (Harry, Jani) v2: * Change vmin and vmax to use u8 (Ville) * Dont store pixel clock since that is just a max dotclock and not related to VRR mode (Manasi) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Harry Wentland <harry.wentland@amd.com> Cc: Clinton A Taylor <clinton.a.taylor@intel.com> Cc: Kazlauskas, Nicholas <Nicholas.Kazlauskas@amd.com> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> --- drivers/gpu/drm/drm_edid.c | 44 +++++++++++++++++++++++++++++++++++++ include/drm/drm_connector.h | 22 +++++++++++++++++++ 2 files changed, 66 insertions(+)