From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D175C282DD for ; Fri, 10 Jan 2020 23:16:35 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7901F20721 for ; Fri, 10 Jan 2020 23:16:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7901F20721 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D88926E0F4; Fri, 10 Jan 2020 23:16:34 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id E3D0F6E0F4 for ; Fri, 10 Jan 2020 23:16:33 +0000 (UTC) X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Jan 2020 15:16:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,418,1571727600"; d="scan'208";a="218208619" Received: from labuser-z97x-ud5h.jf.intel.com (HELO intel.com) ([10.165.21.211]) by fmsmga007.fm.intel.com with ESMTP; 10 Jan 2020 15:16:33 -0800 Date: Fri, 10 Jan 2020 15:17:43 -0800 From: Manasi Navare To: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH v2] drm/dp: Add function to parse EDID descriptors for adaptive sync limits Message-ID: <20200110231743.GB16729@intel.com> References: <20200108003208.18706-1-manasi.d.navare@intel.com> <20200109130852.GN1208@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200109130852.GN1208@intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nicholas Kazlauskas , dri-devel@lists.freedesktop.org Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Thu, Jan 09, 2020 at 03:08:52PM +0200, Ville Syrj=E4l=E4 wrote: > On Tue, Jan 07, 2020 at 04:32:08PM -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 rang= e. > > 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 > > = > > 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 Syrj=E4l=E4 > > Cc: Harry Wentland > > Cc: Clinton A Taylor > > Cc: Nicholas Kazlauskas > > Signed-off-by: Manasi Navare > > --- > > drivers/gpu/drm/drm_edid.c | 51 +++++++++++++++++++++++++++++++++++++ > > include/drm/drm_connector.h | 22 ++++++++++++++++ > > include/drm/drm_edid.h | 2 ++ > > 3 files changed, 75 insertions(+) > > = > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > > index 99769d6c9f84..52781a0e708b 100644 > > --- a/drivers/gpu/drm/drm_edid.c > > +++ b/drivers/gpu/drm/drm_edid.c > > @@ -4880,6 +4880,54 @@ static void drm_parse_cea_ext(struct drm_connect= or *connector, > > } > > } > > = > > +void drm_get_adaptive_sync_limits(struct drm_connector *connector, > > + const struct edid *edid) > > +{ > > + struct drm_display_info *info =3D &connector->display_info; > > + const struct detailed_timing *timing; > > + const struct detailed_non_pixel *data; > > + const struct detailed_data_monitor_range *range; > = > Needlessly wide scope for everything above. Okay will move inside the for_each loop ? > = > > + int i; > > + > > + /* > > + * Restrict Adaptive Sync only for dp and edp > > + */ > > + if (connector->connector_type !=3D DRM_MODE_CONNECTOR_DisplayPort && > > + connector->connector_type !=3D DRM_MODE_CONNECTOR_eDP) > > + return; > > + > > + if (edid->version <=3D 1 && !(edid->version =3D=3D 1 && edid->revisio= n > 1)) > > + return; > = > if (!version_greater(...)) > return; You mean simplify the condition or use define a function version_greater() = to check this condition? > = > > + > > + for (i =3D 0; i < 4; i++) { > = > This should probably use for_each_detailed_block() > Ok yes will use for_each_detailed_block Manasi = > > + timing =3D &edid->detailed_timings[i]; > > + data =3D &timing->data.other_data; > > + range =3D &data->data.range; > > + /* > > + * Check if monitor has continuous frequency mode > > + */ > > + if (data->type !=3D EDID_DETAIL_MONITOR_RANGE) > > + continue; > > + /* > > + * Check for flag range limits only. If flag =3D=3D 1 then > > + * no additional timing information provided. > > + * Default GTF, GTF Secondary curve and CVT are not > > + * supported > > + */ > > + if (range->flags !=3D 1) > > + continue; > > + > > + info->adaptive_sync.min_vfreq =3D range->min_vfreq; > > + info->adaptive_sync.max_vfreq =3D range->max_vfreq; > > + > > + DRM_DEBUG_KMS("Adaptive Sync refresh rate range is %d Hz - %d Hz\n", > > + info->adaptive_sync.min_vfreq, > > + info->adaptive_sync.max_vfreq); > > + break; > > + } > > +} > > +EXPORT_SYMBOL(drm_get_adaptive_sync_limits); > > + > > /* A connector has no EDID information, so we've got no EDID to comput= e quirks from. Reset > > * all of the values which would have been set from EDID > > */ > > @@ -4901,6 +4949,7 @@ drm_reset_display_info(struct drm_connector *conn= ector) > > memset(&info->hdmi, 0, sizeof(info->hdmi)); > > = > > info->non_desktop =3D 0; > > + memset(&info->adaptive_sync, 0, sizeof(info->adaptive_sync)); > > } > > = > > u32 drm_add_display_info(struct drm_connector *connector, const struct= edid *edid) > > @@ -4916,6 +4965,8 @@ u32 drm_add_display_info(struct drm_connector *co= nnector, const struct edid *edi > > = > > info->non_desktop =3D !!(quirks & EDID_QUIRK_NON_DESKTOP); > > = > > + drm_get_adaptive_sync_limits(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 221910948b37..77df404a2e01 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 > > @@ -465,6 +482,11 @@ 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, > > diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h > > index f0b03d401c27..b9a230aa3e69 100644 > > --- a/include/drm/drm_edid.h > > +++ b/include/drm/drm_edid.h > > @@ -503,4 +503,6 @@ void drm_edid_get_monitor_name(struct edid *edid, c= har *name, > > struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, > > int hsize, int vsize, int fresh, > > bool rb); > > +void drm_get_adaptive_sync_limits(struct drm_connector *connector, > > + const struct edid *edid); > > #endif /* __DRM_EDID_H__ */ > > -- = > > 2.19.1 > = > -- = > Ville Syrj=E4l=E4 > Intel _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel