From patchwork Mon Apr 11 14:00:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 12809164 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 F0198C433EF for ; Mon, 11 Apr 2022 14:01:00 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5D87F10F269; Mon, 11 Apr 2022 14:01:00 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9E7FE10F269; Mon, 11 Apr 2022 14:00:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649685659; x=1681221659; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=J291T5B0/vg+PlwHYdwNEhO3zaCOD4WT+HRAmm3cbTo=; b=KGEYyQTMndzugFYW3ITvjlotw8lGM7lqnyj4iJxB2i+UvwPOSjRDpwHY gq6dYx34Di6JTvsyHG1kioBMr6nuwGaM+pYimzeuhJSQtd3FNox7i14fy 4nDQopt5UNl7havUZI1v0qxMHVp+L41MvRMoyEbrZWOSX5kyXFtXRaS8M i7HQNiWM5OZPa5pygGZruHmFqdw8abGGhefKU5nzW/xPptg48DNyOObMp TGoJlMDS2VTiCtAVsdD6OrwX17nXAG3dBd9J9Nq3KfPXGdLS3c0FTPBEE b0wm7Jb6wgu6HkqPXScvX+dEcS4TRYh2J6L53KGxbqiWqCCmCetph6KVv Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10313"; a="259716410" X-IronPort-AV: E=Sophos;i="5.90,252,1643702400"; d="scan'208";a="259716410" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Apr 2022 07:00:57 -0700 X-IronPort-AV: E=Sophos;i="5.90,252,1643702400"; d="scan'208";a="525987380" Received: from lwit-desk1.ger.corp.intel.com (HELO localhost) ([10.249.143.43]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Apr 2022 07:00:54 -0700 From: Jani Nikula To: dri-devel@lists.freedesktop.org Subject: [CI v3 03/12] drm/edid: refactor EDID block status printing Date: Mon, 11 Apr 2022 17:00:26 +0300 Message-Id: <98d12db95e55e2e18548822078ec3b16ae006732.1649685475.git.jani.nikula@intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo 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, intel-gfx@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Split out a function to log EDID block status. The printouts get changed slightly. Unfortunately, not all users will have struct drm_device available, so we convert to pr_* debug logging instead of drm device based logging. v2: Complain more loudly about unknown status codes (Ville) Signed-off-by: Jani Nikula Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/drm_edid.c | 75 ++++++++++++++++++++++++++------------ 1 file changed, 51 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index f062d1715ec3..88e8f906a229 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1729,6 +1729,50 @@ static bool edid_block_valid(const void *block, bool base) edid_block_tag(block)); } +static void edid_block_status_print(enum edid_block_status status, + const struct edid *block, + int block_num) +{ + switch (status) { + case EDID_BLOCK_OK: + break; + case EDID_BLOCK_NULL: + pr_debug("EDID block %d pointer is NULL\n", block_num); + break; + case EDID_BLOCK_ZERO: + pr_notice("EDID block %d is all zeroes\n", block_num); + break; + case EDID_BLOCK_HEADER_CORRUPT: + pr_notice("EDID has corrupt header\n"); + break; + case EDID_BLOCK_HEADER_REPAIR: + pr_debug("EDID corrupt header needs repair\n"); + break; + case EDID_BLOCK_HEADER_FIXED: + pr_debug("EDID corrupt header fixed\n"); + break; + case EDID_BLOCK_CHECKSUM: + if (edid_block_status_valid(status, edid_block_tag(block))) { + pr_debug("EDID block %d (tag 0x%02x) checksum is invalid, remainder is %d, ignoring\n", + block_num, edid_block_tag(block), + edid_block_compute_checksum(block)); + } else { + pr_notice("EDID block %d (tag 0x%02x) checksum is invalid, remainder is %d\n", + block_num, edid_block_tag(block), + edid_block_compute_checksum(block)); + } + break; + case EDID_BLOCK_VERSION: + pr_notice("EDID has major version %d, instead of 1\n", + block->version); + break; + default: + WARN(1, "EDID block %d unknown edid block status code %d\n", + block_num, status); + break; + } +} + /** * drm_edid_block_valid - Sanity check the EDID block (base or extension) * @raw_edid: pointer to raw EDID block @@ -1775,33 +1819,16 @@ bool drm_edid_block_valid(u8 *_block, int block_num, bool print_bad_edid, *edid_corrupt = true; } + edid_block_status_print(status, block, block_num); + /* Determine whether we can use this block with this status. */ valid = edid_block_status_valid(status, edid_block_tag(block)); - /* Some fairly random status printouts. */ - if (status == EDID_BLOCK_CHECKSUM) { - if (valid) { - DRM_DEBUG("EDID block checksum is invalid, remainder is %d\n", - edid_block_compute_checksum(block)); - DRM_DEBUG("Assuming a KVM switch modified the block but left the original checksum\n"); - } else if (print_bad_edid) { - DRM_NOTE("EDID block checksum is invalid, remainder is %d\n", - edid_block_compute_checksum(block)); - } - } else if (status == EDID_BLOCK_VERSION) { - DRM_NOTE("EDID has major version %d, instead of 1\n", - block->version); - } - - if (!valid && print_bad_edid) { - if (status == EDID_BLOCK_ZERO) { - pr_notice("EDID block is all zeroes\n"); - } else { - pr_notice("Raw EDID:\n"); - print_hex_dump(KERN_NOTICE, - " \t", DUMP_PREFIX_NONE, 16, 1, - block, EDID_LENGTH, false); - } + if (!valid && print_bad_edid && status != EDID_BLOCK_ZERO) { + pr_notice("Raw EDID:\n"); + print_hex_dump(KERN_NOTICE, + " \t", DUMP_PREFIX_NONE, 16, 1, + block, EDID_LENGTH, false); } return valid;