From patchwork Tue Apr 9 09:46:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 13622085 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 5CB54CD129A for ; Tue, 9 Apr 2024 09:46:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 91526112C2B; Tue, 9 Apr 2024 09:46:37 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="MGx3VfV8"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 670AE112C2C; Tue, 9 Apr 2024 09:46:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1712655994; x=1744191994; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XY0jGwBpvs8uAeKS2k5EkYx4msZ5og8rpjtVUPoCFpo=; b=MGx3VfV8QxyB+J9vn56k4ZQPeRDPpq7OIyctOSNiDWqE8JpQe1tV4rRB T94/Zox7Mb3XeisOAus2WxGRwSDFMVqTJR8KWw9hVzgOOIr3QeXTFYh44 R85kMwL2MKdiqOdsHwwEqq/mDsvEeutanzOhHJjprrxhIeaahQQJ9+XR6 yur/18cjHcunKuXITCYtrMDc+8SWKdztpAx8FUxVuLO1cHTuIERWSTm/8 vdRrEk6015odPQYehz09vIbJw7bNbU48Wyl0Jeph162WlBSrm+oxxNw19 cXjyGp4E0iKCiGC3+OBN8ftEy9fS9Kfxzt4S3dNBsB3ci3mV5XtJRD59j w==; X-CSE-ConnectionGUID: 9oxNP7ASTMmOQhTH2hzFWQ== X-CSE-MsgGUID: iS63J1VvQmCuqn1mYx9pgQ== X-IronPort-AV: E=McAfee;i="6600,9927,11038"; a="11758359" X-IronPort-AV: E=Sophos;i="6.07,189,1708416000"; d="scan'208";a="11758359" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Apr 2024 02:46:33 -0700 X-CSE-ConnectionGUID: kAbHfydXRFKSFts3/VP1ag== X-CSE-MsgGUID: 9zqYhAMXSkaXA23VBdjvYg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,189,1708416000"; d="scan'208";a="24662269" Received: from mserban-mobl1.ger.corp.intel.com (HELO localhost) ([10.252.59.228]) by fmviesa005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Apr 2024 02:46:32 -0700 From: Jani Nikula To: dri-devel@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org, jani.nikula@intel.com, Melissa Wen , ville.syrjala@linux.intel.com Subject: [PATCH v2 3/4] drm/i915/bios: switch to struct drm_edid and struct drm_edid_product_id Date: Tue, 9 Apr 2024 12:46:11 +0300 Message-Id: X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To avoid accessing and parsing the raw EDID with drm_edid_raw(), switch to the struct drm_edid based function to extract product id, and use the drm printer function to debug log it. The underlying assumption is that struct drm_edid_product_id and struct lvds_pnp_id describe identical data, albeit with slightly different member definitions. Cc: Ville Syrjälä Acked-by: Melissa Wen Signed-off-by: Jani Nikula Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/i915/display/intel_bios.c | 43 ++++++++++------------- 1 file changed, 18 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 2abd2d7ceda2..3d89e4b39fed 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -600,6 +600,9 @@ get_lvds_pnp_id(const struct bdb_lvds_lfp_data *data, const struct bdb_lvds_lfp_data_ptrs *ptrs, int index) { + /* These two are supposed to have the same layout in memory. */ + BUILD_BUG_ON(sizeof(struct lvds_pnp_id) != sizeof(struct drm_edid_product_id)); + return (const void *)data + ptrs->ptr[index].panel_pnp_id.offset; } @@ -613,19 +616,6 @@ get_lfp_data_tail(const struct bdb_lvds_lfp_data *data, return NULL; } -static void dump_pnp_id(struct drm_i915_private *i915, - const struct lvds_pnp_id *pnp_id, - const char *name) -{ - u16 mfg_name = be16_to_cpu((__force __be16)pnp_id->mfg_name); - char vend[4]; - - drm_dbg_kms(&i915->drm, "%s PNPID mfg: %s (0x%x), prod: %u, serial: %u, week: %d, year: %d\n", - name, drm_edid_decode_mfg_id(mfg_name, vend), - pnp_id->mfg_name, pnp_id->product_code, pnp_id->serial, - pnp_id->mfg_week, pnp_id->mfg_year + 1990); -} - static int opregion_get_panel_type(struct drm_i915_private *i915, const struct intel_bios_encoder_data *devdata, const struct drm_edid *drm_edid, bool use_fallback) @@ -664,21 +654,21 @@ static int pnpid_get_panel_type(struct drm_i915_private *i915, { const struct bdb_lvds_lfp_data *data; const struct bdb_lvds_lfp_data_ptrs *ptrs; - const struct lvds_pnp_id *edid_id; - struct lvds_pnp_id edid_id_nodate; - const struct edid *edid = drm_edid_raw(drm_edid); /* FIXME */ + struct drm_edid_product_id product_id, product_id_nodate; + struct drm_printer p; int i, best = -1; - if (!edid) + if (!drm_edid) return -1; - edid_id = (const void *)&edid->mfg_id[0]; + drm_edid_get_product_id(drm_edid, &product_id); - edid_id_nodate = *edid_id; - edid_id_nodate.mfg_week = 0; - edid_id_nodate.mfg_year = 0; + product_id_nodate = product_id; + product_id_nodate.week_of_manufacture = 0; + product_id_nodate.year_of_manufacture = 0; - dump_pnp_id(i915, edid_id, "EDID"); + p = drm_dbg_printer(&i915->drm, DRM_UT_KMS, "EDID"); + drm_edid_print_product_id(&p, &product_id, true); ptrs = bdb_find_section(i915, BDB_LVDS_LFP_DATA_PTRS); if (!ptrs) @@ -693,7 +683,7 @@ static int pnpid_get_panel_type(struct drm_i915_private *i915, get_lvds_pnp_id(data, ptrs, i); /* full match? */ - if (!memcmp(vbt_id, edid_id, sizeof(*vbt_id))) + if (!memcmp(vbt_id, &product_id, sizeof(*vbt_id))) return i; /* @@ -701,7 +691,7 @@ static int pnpid_get_panel_type(struct drm_i915_private *i915, * and the VBT entry does not specify a date. */ if (best < 0 && - !memcmp(vbt_id, &edid_id_nodate, sizeof(*vbt_id))) + !memcmp(vbt_id, &product_id_nodate, sizeof(*vbt_id))) best = i; } @@ -888,6 +878,7 @@ parse_lfp_data(struct drm_i915_private *i915, const struct bdb_lvds_lfp_data_tail *tail; const struct bdb_lvds_lfp_data_ptrs *ptrs; const struct lvds_pnp_id *pnp_id; + struct drm_printer p; int panel_type = panel->vbt.panel_type; ptrs = bdb_find_section(i915, BDB_LVDS_LFP_DATA_PTRS); @@ -902,7 +893,9 @@ parse_lfp_data(struct drm_i915_private *i915, parse_lfp_panel_dtd(i915, panel, data, ptrs); pnp_id = get_lvds_pnp_id(data, ptrs, panel_type); - dump_pnp_id(i915, pnp_id, "Panel"); + + p = drm_dbg_printer(&i915->drm, DRM_UT_KMS, "Panel"); + drm_edid_print_product_id(&p, (const struct drm_edid_product_id *)pnp_id, false); tail = get_lfp_data_tail(data, ptrs); if (!tail)