From patchwork Wed Mar 2 09:35:10 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: 12765688 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 CA30DC4332F for ; Wed, 2 Mar 2022 09:22:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EAFD110F2AF; Wed, 2 Mar 2022 09:22:14 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id E15D310F2AF for ; Wed, 2 Mar 2022 09:22:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1646212933; x=1677748933; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=X3tpLVSBOiSJCI9w//He/YJRh4fscBNRwVSJ/Amu9Pc=; b=OxvsF/ExSwiqu6xe4EjYVkdhlHmGRV0lYhJtN5X9+fYf+Jt2i8eE+2OS icGQc1hgr6juuY+k5vjUlpO0yMhGcKMGevxCcZpUibcs6eyrwG4EaDze+ 8FsSPXelw2LM2KbNmZ/6sSi9TQUvbCLjYP+7KpbDkE5PcDg3/Kdmw4nUi fZc6+38hhQfcvvRNcDUid90qC47wuvOpAd+Nxj7yJZkcrZBs74MI6UltO pmvduwhtJTAfI3MsRTu2sRSHldjPiDBVTi2nCe0O6Gju7Z6ZWQK4WJD5Y cPfdmYU4aK81zExhIzGDm6U4opqo7xouDfHi9YN1ivnrMSwU6nrOyV6JU w==; X-IronPort-AV: E=McAfee;i="6200,9189,10273"; a="252187740" X-IronPort-AV: E=Sophos;i="5.90,148,1643702400"; d="scan'208";a="252187740" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2022 01:22:12 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,148,1643702400"; d="scan'208";a="807012184" Received: from shawnle1-build-machine.itwn.intel.com ([10.5.253.78]) by fmsmga005.fm.intel.com with ESMTP; 02 Mar 2022 01:22:10 -0800 From: Lee Shawn C To: dri-devel@lists.freedesktop.org Subject: [v4 4/5] drm/edid: parse HF-EEODB CEA extension block Date: Wed, 2 Mar 2022 17:35:10 +0800 Message-Id: <20220302093511.30299-5-shawn.c.lee@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220302093511.30299-1-shawn.c.lee@intel.com> References: <20220302093511.30299-1-shawn.c.lee@intel.com> 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: jani.nikula@intel.com, ankit.k.nautiyal@intel.com, Lee Shawn C Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 Signed-off-by: Lee Shawn C --- drivers/gpu/drm/drm_displayid.c | 5 ++++- drivers/gpu/drm/drm_edid.c | 35 +++++++++++++++++++-------------- include/drm/drm_edid.h | 2 +- 3 files changed, 25 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/drm_displayid.c b/drivers/gpu/drm/drm_displayid.c index 32da557b960f..dc649a9efaa2 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 e5ac9ab0b9d0..2b8ddc956ce2 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3360,23 +3360,23 @@ 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; @@ -3384,14 +3384,15 @@ const u8 *drm_find_edid_extension(const struct edid *edid, return edid_ext; } -static const u8 *drm_find_cea_extension(const struct edid *edid, int *ext_index) +static const u8 *drm_find_cea_extension(const struct edid *edid, + int *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, ext_index); + cea = drm_find_edid_extension(edid, CEA_EXT, ext_index, ext_blk_num); if (cea) return cea; @@ -3675,7 +3676,7 @@ add_alternate_cea_modes(struct drm_connector *connector, struct edid *edid) int modes = 0, ext_index = 0; /* Don't add CEA modes if the CEA extension block is missing */ - if (!drm_find_cea_extension(edid, &ext_index)) + if (!drm_find_cea_extension(edid, &ext_index, edid->extensions)) return 0; /* @@ -4327,7 +4328,7 @@ size_t drm_edid_read_hf_eeodb_blk_count(const struct edid *edid) int i, start, end, ext_index = 0; if (edid->extensions) { - cea = drm_find_cea_extension(edid, &ext_index); + cea = drm_find_cea_extension(edid, &ext_index, edid->extensions); if (cea && !cea_db_offsets(cea, &start, &end)) for_each_cea_db(cea, i, start, end) @@ -4386,12 +4387,16 @@ add_cea_modes(struct drm_connector *connector, struct edid *edid) u8 dbl, hdmi_len; int modes = 0, ext_index = 0; int i, start, end; + int ext_blk_num = drm_edid_read_hf_eeodb_blk_count(edid); + + if (!ext_blk_num) + ext_blk_num = edid->extensions; for (;;) { const u8 *hdmi = NULL, *video = NULL; u8 video_len = 0; - cea = drm_find_cea_extension(edid, &ext_index); + cea = drm_find_cea_extension(edid, &ext_index, ext_blk_num); if (!cea) break; @@ -4640,7 +4645,7 @@ static void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) if (!edid) return; - cea = drm_find_cea_extension(edid, &ext_index); + cea = drm_find_cea_extension(edid, &ext_index, edid->extensions); if (!cea) { DRM_DEBUG_KMS("ELD: no CEA Extension found\n"); return; @@ -4728,7 +4733,7 @@ int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads) int i, start, end, dbl; const u8 *cea; - cea = drm_find_cea_extension(edid, &ext_index); + cea = drm_find_cea_extension(edid, &ext_index, edid->extensions); if (!cea) { DRM_DEBUG_KMS("SAD: no CEA Extension found\n"); return 0; @@ -4790,7 +4795,7 @@ int drm_edid_to_speaker_allocation(struct edid *edid, u8 **sadb) int i, start, end, dbl; const u8 *cea; - cea = drm_find_cea_extension(edid, &ext_index); + cea = drm_find_cea_extension(edid, &ext_index, edid->extensions); if (!cea) { DRM_DEBUG_KMS("SAD: no CEA Extension found\n"); return 0; @@ -4885,7 +4890,7 @@ bool drm_detect_hdmi_monitor(struct edid *edid) int i; int start_offset, end_offset, ext_index = 0; - edid_ext = drm_find_cea_extension(edid, &ext_index); + edid_ext = drm_find_cea_extension(edid, &ext_index, edid->extensions); if (!edid_ext) return false; @@ -4924,7 +4929,7 @@ bool drm_detect_monitor_audio(struct edid *edid) bool has_audio = false; int start_offset, end_offset, ext_index = 0; - edid_ext = drm_find_cea_extension(edid, &ext_index); + edid_ext = drm_find_cea_extension(edid, &ext_index, edid->extensions); if (!edid_ext) goto end; @@ -5248,7 +5253,7 @@ static void drm_parse_cea_ext(struct drm_connector *connector, const u8 *edid_ext; int i, start, end, ext_index = 0; - edid_ext = drm_find_cea_extension(edid, &ext_index); + edid_ext = drm_find_cea_extension(edid, &ext_index, edid->extensions); if (!edid_ext) return; diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 5549da7bd7be..5555b27e92f9 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); #endif /* __DRM_EDID_H__ */