From patchwork Tue Sep 14 20:21:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 12494615 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UPPERCASE_50_75,USER_AGENT_GIT autolearn=unavailable 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 33F20C43217 for ; Tue, 14 Sep 2021 20:22:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DE6B61183 for ; Tue, 14 Sep 2021 20:22:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233976AbhINUXq (ORCPT ); Tue, 14 Sep 2021 16:23:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234025AbhINUXn (ORCPT ); Tue, 14 Sep 2021 16:23:43 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C396C0613CF for ; Tue, 14 Sep 2021 13:22:24 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id o8so183091pll.1 for ; Tue, 14 Sep 2021 13:22:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=s2t3OBEBZv8gCynOpYw1ybZLTn4iofsMa7t+E6nlIw8=; b=kUWepDm3u3ET/VIch1RSsDhE5Hsd/ozwc9i2VCBWLQnb1V53VRLCj9NvuAM48YR4g5 NRjwJLsxwqXzt+RVqr6rUzPDr7oeNeTOYiON5by8i9SNRmCcrEMo58RK4uDBzmcKk+0S tMd/M2ySOlmCOT07PIIUlEBE5Y3ZYSemEviBY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=s2t3OBEBZv8gCynOpYw1ybZLTn4iofsMa7t+E6nlIw8=; b=RptDuQG8VPCNlfbb1M7tG07EnhALlnph9IlkNFMrnQ19PQ4q1GRszcBtjLMI/zTpru PJJ3IXIPs7CosUIwRgpuacOjKlqFqSIbEZuKIqKZwPDdtr8OGh7BOgrA2w4dugA1e/1f UeA/vOTy+nUIo5Fqt2m8ePZ5VZhn9KmqnzVQN7iYygMWdIZY3D3+trb56vV3l9JGIZ7N WeXGAqwYlRpV7sZ9/ovHEnXSVGF0JHgSG5npUFq2ZYYFnJkaan1Bm+OjhzBZdvcSnlUx iUQlX1sDevqFMIF07othweW0Jqs8F3+IWvDHnzMLZRGrTailTPTbJbdHRnyuxq2ad8/q z37A== X-Gm-Message-State: AOAM532xjgZ6m5HQmfCvfOt2XeoMO3m2ul4Z9M+320yLJrUj2AfX3CP6 keTxGTa1bXCCDTmfQ8aMg2hkCg== X-Google-Smtp-Source: ABdhPJz2sGn0Bqs0YP0tTx74GX1KX/TPZopgJxiZzR966FdQG3FtaTIpolYxJJbANoOa31KRVVpeEA== X-Received: by 2002:a17:90a:12:: with SMTP id 18mr4161394pja.104.1631650943914; Tue, 14 Sep 2021 13:22:23 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:201:f38f:9d0f:3eba:f8c4]) by smtp.gmail.com with ESMTPSA id 141sm12185393pgg.16.2021.09.14.13.22.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Sep 2021 13:22:23 -0700 (PDT) From: Douglas Anderson To: Thierry Reding , Rob Herring , Sam Ravnborg Cc: devicetree@vger.kernel.org, Steev Klimaszewski , dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, David Airlie , Maarten Lankhorst , Thomas Zimmermann , Linus W , Bjorn Andersson , Daniel Vetter , Maxime Ripard , Douglas Anderson , Jani Nikula , linux-kernel@vger.kernel.org Subject: [PATCH v5 04/15] drm/edid: Use new encoded panel id style for quirks matching Date: Tue, 14 Sep 2021 13:21:51 -0700 Message-Id: <20210914132020.v5.4.I6103ce2b16e5e5a842b14c7022a034712b434609@changeid> X-Mailer: git-send-email 2.33.0.309.g3052b89438-goog In-Reply-To: <20210914202202.1702601-1-dianders@chromium.org> References: <20210914202202.1702601-1-dianders@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org In the patch ("drm/edid: Allow the querying/working with the panel ID from the EDID") we introduced a different way of working with the panel ID stored in the EDID. Let's use this new way for the quirks code. Advantages of the new style: * Smaller data structure size. Saves 4 bytes per panel. * Iterate through quirks structure with just "==" instead of strncmp() * In-kernel storage is more similar to what's stored in the EDID itself making it easier to grok that they are referring to the same value. Signed-off-by: Douglas Anderson Reviewed-by: Jani Nikula --- This commit is only compile-tested. I don't have any DP panels that exercise this code. Transition from the old table to the new one was done with a regexp. Changes in v5: - Prettier encode panel ID function (thanks Andrzej!) Changes in v4: - ("Use new encoded panel id style for quirks matching") new for v4. drivers/gpu/drm/drm_edid.c | 156 +++++++++++++++++-------------------- 1 file changed, 70 insertions(+), 86 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index f84e0dd264f4..53b342c058be 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -100,122 +100,127 @@ struct detailed_mode_closure { #define LEVEL_GTF2 2 #define LEVEL_CVT 3 +#define EDID_QUIRK(vend, product_id, _quirks) \ +{ \ + .panel_id = drm_edid_encode_panel_id(vend, product_id), \ + .quirks = _quirks \ +} + static const struct edid_quirk { - char vendor[4]; - int product_id; + u32 panel_id; u32 quirks; } edid_quirk_list[] = { /* Acer AL1706 */ - { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("ACR", 44358, EDID_QUIRK_PREFER_LARGE_60), /* Acer F51 */ - { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("API", 0x7602, EDID_QUIRK_PREFER_LARGE_60), /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */ - { "AEO", 0, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("AEO", 0, EDID_QUIRK_FORCE_6BPC), /* BOE model on HP Pavilion 15-n233sl reports 8 bpc, but is a 6 bpc panel */ - { "BOE", 0x78b, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("BOE", 0x78b, EDID_QUIRK_FORCE_6BPC), /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ - { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("CPT", 0x17df, EDID_QUIRK_FORCE_6BPC), /* SDC panel of Lenovo B50-80 reports 8 bpc, but is a 6 bpc panel */ - { "SDC", 0x3652, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("SDC", 0x3652, EDID_QUIRK_FORCE_6BPC), /* BOE model 0x0771 reports 8 bpc, but is a 6 bpc panel */ - { "BOE", 0x0771, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("BOE", 0x0771, EDID_QUIRK_FORCE_6BPC), /* Belinea 10 15 55 */ - { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, - { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("MAX", 1516, EDID_QUIRK_PREFER_LARGE_60), + EDID_QUIRK("MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60), /* Envision Peripherals, Inc. EN-7100e */ - { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH }, + EDID_QUIRK("EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH), /* Envision EN2028 */ - { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("EPI", 8232, EDID_QUIRK_PREFER_LARGE_60), /* Funai Electronics PM36B */ - { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 | - EDID_QUIRK_DETAILED_IN_CM }, + EDID_QUIRK("FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 | + EDID_QUIRK_DETAILED_IN_CM), /* LGD panel of HP zBook 17 G2, eDP 10 bpc, but reports unknown bpc */ - { "LGD", 764, EDID_QUIRK_FORCE_10BPC }, + EDID_QUIRK("LGD", 764, EDID_QUIRK_FORCE_10BPC), /* LG Philips LCD LP154W01-A5 */ - { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, - { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, + EDID_QUIRK("LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE), + EDID_QUIRK("LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE), /* Samsung SyncMaster 205BW. Note: irony */ - { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP }, + EDID_QUIRK("SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP), /* Samsung SyncMaster 22[5-6]BW */ - { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 }, - { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("SAM", 596, EDID_QUIRK_PREFER_LARGE_60), + EDID_QUIRK("SAM", 638, EDID_QUIRK_PREFER_LARGE_60), /* Sony PVM-2541A does up to 12 bpc, but only reports max 8 bpc */ - { "SNY", 0x2541, EDID_QUIRK_FORCE_12BPC }, + EDID_QUIRK("SNY", 0x2541, EDID_QUIRK_FORCE_12BPC), /* ViewSonic VA2026w */ - { "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING }, + EDID_QUIRK("VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING), /* Medion MD 30217 PG */ - { "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 }, + EDID_QUIRK("MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75), /* Lenovo G50 */ - { "SDC", 18514, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("SDC", 18514, EDID_QUIRK_FORCE_6BPC), /* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */ - { "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC }, + EDID_QUIRK("SEC", 0xd033, EDID_QUIRK_FORCE_8BPC), /* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/ - { "ETR", 13896, EDID_QUIRK_FORCE_8BPC }, + EDID_QUIRK("ETR", 13896, EDID_QUIRK_FORCE_8BPC), /* Valve Index Headset */ - { "VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91be, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91be, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP), /* HTC Vive and Vive Pro VR Headsets */ - { "HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP }, - { "HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP), /* Oculus Rift DK1, DK2, CV1 and Rift S VR Headsets */ - { "OVR", 0x0001, EDID_QUIRK_NON_DESKTOP }, - { "OVR", 0x0003, EDID_QUIRK_NON_DESKTOP }, - { "OVR", 0x0004, EDID_QUIRK_NON_DESKTOP }, - { "OVR", 0x0012, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("OVR", 0x0001, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("OVR", 0x0003, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("OVR", 0x0004, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("OVR", 0x0012, EDID_QUIRK_NON_DESKTOP), /* Windows Mixed Reality Headsets */ - { "ACR", 0x7fce, EDID_QUIRK_NON_DESKTOP }, - { "HPN", 0x3515, EDID_QUIRK_NON_DESKTOP }, - { "LEN", 0x0408, EDID_QUIRK_NON_DESKTOP }, - { "LEN", 0xb800, EDID_QUIRK_NON_DESKTOP }, - { "FUJ", 0x1970, EDID_QUIRK_NON_DESKTOP }, - { "DEL", 0x7fce, EDID_QUIRK_NON_DESKTOP }, - { "SEC", 0x144a, EDID_QUIRK_NON_DESKTOP }, - { "AUS", 0xc102, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("ACR", 0x7fce, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("HPN", 0x3515, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("LEN", 0x0408, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("LEN", 0xb800, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("FUJ", 0x1970, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("DEL", 0x7fce, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("SEC", 0x144a, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("AUS", 0xc102, EDID_QUIRK_NON_DESKTOP), /* Sony PlayStation VR Headset */ - { "SNY", 0x0704, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("SNY", 0x0704, EDID_QUIRK_NON_DESKTOP), /* Sensics VR Headsets */ - { "SEN", 0x1019, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("SEN", 0x1019, EDID_QUIRK_NON_DESKTOP), /* OSVR HDK and HDK2 VR Headsets */ - { "SVR", 0x1019, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("SVR", 0x1019, EDID_QUIRK_NON_DESKTOP), }; /* @@ -2090,9 +2095,8 @@ EXPORT_SYMBOL(drm_get_edid); static u32 edid_extract_panel_id(const struct edid *edid) { /* - * In theory we could try to de-obfuscate this like edid_get_quirks() - * does, but it's easier to just deal with a 32-bit number since then - * it can be compared with "==". + * We represent the ID as a 32-bit number so it can easily be compared + * with "==". * * NOTE that we deal with endianness differently for the top half * of this ID than for the bottom half. The bottom half (the product @@ -2197,25 +2201,6 @@ EXPORT_SYMBOL(drm_edid_duplicate); /*** EDID parsing ***/ -/** - * edid_vendor - match a string against EDID's obfuscated vendor field - * @edid: EDID to match - * @vendor: vendor string - * - * Returns true if @vendor is in @edid, false otherwise - */ -static bool edid_vendor(const struct edid *edid, const char *vendor) -{ - char edid_vendor[3]; - - edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@'; - edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) | - ((edid->mfg_id[1] & 0xe0) >> 5)) + '@'; - edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@'; - - return !strncmp(edid_vendor, vendor, 3); -} - /** * edid_get_quirks - return quirk flags for a given EDID * @edid: EDID to process @@ -2224,14 +2209,13 @@ static bool edid_vendor(const struct edid *edid, const char *vendor) */ static u32 edid_get_quirks(const struct edid *edid) { + u32 panel_id = edid_extract_panel_id(edid); const struct edid_quirk *quirk; int i; for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) { quirk = &edid_quirk_list[i]; - - if (edid_vendor(edid, quirk->vendor) && - (EDID_PRODUCT_ID(edid) == quirk->product_id)) + if (quirk->panel_id == panel_id) return quirk->quirks; }