From patchwork Sun Mar 13 13:47:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lee, Shawn C" X-Patchwork-Id: 12779262 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4FAFDC433F5 for ; Sun, 13 Mar 2022 13:33:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 91C5810E059; Sun, 13 Mar 2022 13:33:19 +0000 (UTC) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5E74410E1B7; Sun, 13 Mar 2022 13:33:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647178398; x=1678714398; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=fgoTOWqbhDYeNck02jVw8B3hsujgoFe72W50Hl5St3I=; b=PK4VJhfp5xO7qcT1q9M4z7BJaPGrn7fPwUkmIgWHuBGTMVyvaW53rU97 J8X0jzpugIqeN3d9lsRDInfWKTb8Hb+bH4u9fRX0wF/MfUWmTk8sopTjv oCUgaRN5E6lUmLgT+WH7eqsqpopjuDyZhHMmLV4cu5BdlowlWrsilV84G gdC00JJvh6ZMyDBdRUB8KYv1N4be+Z6V+6asye5RD8Jjx+0fp+wKOLren znH9gbviityKo6ovVDiN8CGulVfQLI+ed2MK6qY40m02jz/ki22JFCRGN niOd//dDJKMXdtWfdFG7FQnBg80XStaIVuhWVfBtAPwsZcQN3h4tXOstq w==; X-IronPort-AV: E=McAfee;i="6200,9189,10284"; a="255600698" X-IronPort-AV: E=Sophos;i="5.90,178,1643702400"; d="scan'208";a="255600698" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Mar 2022 06:33:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,178,1643702400"; d="scan'208";a="515101487" Received: from shawnle1-build-machine.itwn.intel.com ([10.5.253.78]) by orsmga006.jf.intel.com with ESMTP; 13 Mar 2022 06:33:16 -0700 From: Lee Shawn C To: dri-devel@lists.freedesktop.org Date: Sun, 13 Mar 2022 21:47:01 +0800 Message-Id: <20220313134702.24175-5-shawn.c.lee@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220313134702.24175-1-shawn.c.lee@intel.com> References: <20220313134702.24175-1-shawn.c.lee@intel.com> Subject: [Intel-gfx] [v7 4/5] drm/edid: parse HF-EEODB CEA extension block X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jani.nikula@intel.com, intel-gfx@lists.freedesktop.org, Drew Davenport Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" While adding CEA modes, try to get available EEODB block number. Then based on it to parse numbers of ext blocks, retrieve CEA information and add more CEA modes. Cc: Jani Nikula Cc: Ville Syrjala Cc: Ankit Nautiyal Cc: Drew Davenport Cc: intel-gfx Signed-off-by: Lee Shawn C --- drivers/gpu/drm/drm_displayid.c | 5 ++- drivers/gpu/drm/drm_edid.c | 68 +++++++++++++++++++++++++-------- include/drm/drm_edid.h | 2 +- 3 files changed, 58 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/drm_displayid.c b/drivers/gpu/drm/drm_displayid.c index 31c3e6d7d549..a769c55146f4 100644 --- a/drivers/gpu/drm/drm_displayid.c +++ b/drivers/gpu/drm/drm_displayid.c @@ -37,7 +37,10 @@ static const u8 *drm_find_displayid_extension(const struct edid *edid, int *length, int *idx, int *ext_index) { - const u8 *displayid = drm_find_edid_extension(edid, DISPLAYID_EXT, ext_index); + const u8 *displayid = drm_find_edid_extension(edid, + DISPLAYID_EXT, + ext_index, + edid->extensions); const struct displayid_header *base; int ret; diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 5ae4e83fa5e3..5de85ba20bdf 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3360,23 +3360,25 @@ add_detailed_modes(struct drm_connector *connector, struct edid *edid, * Search EDID for CEA extension block. */ const u8 *drm_find_edid_extension(const struct edid *edid, - int ext_id, int *ext_index) + int ext_id, + int *ext_index, + int ext_blk_num) { const u8 *edid_ext = NULL; int i; /* No EDID or EDID extensions */ - if (edid == NULL || edid->extensions == 0) + if (edid == NULL || edid->extensions == 0 || *ext_index >= ext_blk_num) return NULL; /* Find CEA extension */ - for (i = *ext_index; i < edid->extensions; i++) { + for (i = *ext_index; i < ext_blk_num; i++) { edid_ext = (const u8 *)edid + EDID_LENGTH * (i + 1); if (edid_ext[0] == ext_id) break; } - if (i >= edid->extensions) + if (i >= ext_blk_num) return NULL; *ext_index = i + 1; @@ -3385,14 +3387,19 @@ const u8 *drm_find_edid_extension(const struct edid *edid, } static const u8 *drm_find_cea_extension(const struct edid *edid, - int *cea_ext_index, int *displayid_ext_index) + int *cea_ext_index, + int *displayid_ext_index, + int ext_blk_num) { const struct displayid_block *block; struct displayid_iter iter; const u8 *cea; /* Look for a CEA extension block from ext_index */ - cea = drm_find_edid_extension(edid, CEA_EXT, cea_ext_index); + cea = drm_find_edid_extension(edid, + CEA_EXT, + cea_ext_index, + ext_blk_num); if (cea) return cea; @@ -3676,7 +3683,10 @@ add_alternate_cea_modes(struct drm_connector *connector, struct edid *edid) int modes = 0, cea_ext_index = 0, displayid_ext_index = 0; /* Don't add CEA modes if the CEA extension block is missing */ - if (!drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index)) + if (!drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions)) return 0; /* @@ -4328,7 +4338,10 @@ size_t drm_edid_read_hf_eeodb_blk_count(const struct edid *edid) int i, start, end, cea_ext_index = 0, displayid_ext_index = 0; if (edid->extensions) { - cea = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + cea = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions); if (cea && !cea_db_offsets(cea, &start, &end)) for_each_cea_db(cea, i, start, end) @@ -4384,13 +4397,20 @@ static int add_cea_modes(struct drm_connector *connector, struct edid *edid) { int modes = 0, cea_ext_index = 0, displayid_ext_index = 0; + int ext_blk_num = drm_edid_read_hf_eeodb_blk_count(edid); + + if (!ext_blk_num) + ext_blk_num = edid->extensions; for (;;) { const u8 *cea, *db, *hdmi = NULL, *video = NULL; u8 dbl, hdmi_len = 0, video_len = 0; int i, start, end; - cea = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + cea = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + ext_blk_num); if (!cea) break; @@ -4640,7 +4660,10 @@ static void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) if (!edid) return; - cea = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + cea = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions); if (!cea) { DRM_DEBUG_KMS("ELD: no CEA Extension found\n"); return; @@ -4729,7 +4752,10 @@ int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads) int cea_ext_index = 0, displayid_ext_index = 0; const u8 *cea; - cea = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + cea = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions); if (!cea) { DRM_DEBUG_KMS("SAD: no CEA Extension found\n"); return 0; @@ -4792,7 +4818,10 @@ int drm_edid_to_speaker_allocation(struct edid *edid, u8 **sadb) int cea_ext_index = 0, displayid_ext_index = 0; const u8 *cea; - cea = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + cea = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions); if (!cea) { DRM_DEBUG_KMS("SAD: no CEA Extension found\n"); return 0; @@ -4888,7 +4917,10 @@ bool drm_detect_hdmi_monitor(struct edid *edid) int start_offset, end_offset; int cea_ext_index = 0, displayid_ext_index = 0; - edid_ext = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + edid_ext = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions); if (!edid_ext) return false; @@ -4928,7 +4960,10 @@ bool drm_detect_monitor_audio(struct edid *edid) int start_offset, end_offset; int cea_ext_index = 0, displayid_ext_index = 0; - edid_ext = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + edid_ext = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions); if (!edid_ext) goto end; @@ -5253,7 +5288,10 @@ static void drm_parse_cea_ext(struct drm_connector *connector, int i, start, end; int cea_ext_index = 0, displayid_ext_index = 0; - edid_ext = drm_find_cea_extension(edid, &cea_ext_index, &displayid_ext_index); + edid_ext = drm_find_cea_extension(edid, + &cea_ext_index, + &displayid_ext_index, + edid->extensions); if (!edid_ext) return; diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 585f0ed932d4..fa06f9a468c4 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -591,7 +591,7 @@ struct drm_display_mode * drm_display_mode_from_cea_vic(struct drm_device *dev, u8 video_code); const u8 *drm_find_edid_extension(const struct edid *edid, - int ext_id, int *ext_index); + int ext_id, int *ext_index, int ext_blk_num); size_t drm_edid_read_hf_eeodb_blk_count(const struct edid *edid);