From patchwork Fri Jun 10 08:54:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Hogander, Jouni" X-Patchwork-Id: 12877001 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 78C7FC43334 for ; Fri, 10 Jun 2022 08:55:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A4CC2112AD8; Fri, 10 Jun 2022 08:55:00 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7279F10FF89 for ; Fri, 10 Jun 2022 08:54:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1654851298; x=1686387298; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jjmCqITytQYerU5UO6LjivaK7l14044rgaMWKJaDmSE=; b=JxvNxfAtNDAJFBLEqgqh82XYuNsbTYtEuZSH/YC4HzWS256DMaVEvwCd 0AC2UjIHVPDjVfX1vYxifuTN5hbE9vcZKv4HdpGiFRgl77whIUZ2kqMKd WzmdMZCZR1prVUFo5UqxdMGICRGMGEudprrT1ZQMX/hiq3jg3EqB+olST EDE5WMBvgSftBka9XW13rOQraRyDBaq4tvUr369lYHvFWtcOOru0q5rdl gpZzv5K655iSMHEEkrMfj7JEcNQemZviSHLYU2NQo1eWcVIv3ODEYT1Q4 FRLCnM2v9Z6DEY6+nl28By70eA6x8rk5qkWBAcBmTOI11e6IMw2cLtpQ6 w==; X-IronPort-AV: E=McAfee;i="6400,9594,10373"; a="278704908" X-IronPort-AV: E=Sophos;i="5.91,288,1647327600"; d="scan'208";a="278704908" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2022 01:54:53 -0700 X-IronPort-AV: E=Sophos;i="5.91,288,1647327600"; d="scan'208";a="586105707" Received: from seamusk-mobl2.ger.corp.intel.com (HELO jhogande-mobl1.ger.corp.intel.com) ([10.249.39.102]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2022 01:54:51 -0700 From: =?utf-8?q?Jouni_H=C3=B6gander?= To: intel-gfx@lists.freedesktop.org Date: Fri, 10 Jun 2022 11:54:27 +0300 Message-Id: <20220610085429.52935-2-jouni.hogander@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220610085429.52935-1-jouni.hogander@intel.com> References: <20220610085429.52935-1-jouni.hogander@intel.com> MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Subject: [Intel-gfx] [PATCH v3 1/3] drm/i915/opregion: add function to check if headless sku 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 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Export headless sku bit (bit 13) from opregion->header->pcon as an interface to check if our device is headless configuration. This is mainly targeted for hybrid gfx systems. E.g. when display is not supposed to be connected discrete graphics card it's opregion can inform this is headless graphics card. v3: Dummy version is now static inline function v2: Check also opregion version Bspec: 53441 Reviewed-by: Jani Nikula Signed-off-by: Jouni Högander --- drivers/gpu/drm/i915/display/intel_opregion.c | 14 ++++++++++++++ drivers/gpu/drm/i915/display/intel_opregion.h | 7 +++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c index f31e8c3f8ce0..6876ba30d5a9 100644 --- a/drivers/gpu/drm/i915/display/intel_opregion.c +++ b/drivers/gpu/drm/i915/display/intel_opregion.c @@ -53,6 +53,8 @@ #define MBOX_ASLE_EXT BIT(4) /* Mailbox #5 */ #define MBOX_BACKLIGHT BIT(5) /* Mailbox #2 (valid from v3.x) */ +#define PCON_HEADLESS_SKU BIT(13) + struct opregion_header { u8 signature[16]; u32 size; @@ -1135,6 +1137,18 @@ struct edid *intel_opregion_get_edid(struct intel_connector *intel_connector) return new_edid; } +bool intel_opregion_headless_sku(struct drm_i915_private *i915) +{ + struct intel_opregion *opregion = &i915->opregion; + struct opregion_header *header = opregion->header; + + if (!header || header->over.major < 2 || + (header->over.major == 2 && header->over.minor < 3)) + return false; + + return opregion->header->pcon & PCON_HEADLESS_SKU; +} + void intel_opregion_register(struct drm_i915_private *i915) { struct intel_opregion *opregion = &i915->opregion; diff --git a/drivers/gpu/drm/i915/display/intel_opregion.h b/drivers/gpu/drm/i915/display/intel_opregion.h index 82cc0ba34af7..2f261f985400 100644 --- a/drivers/gpu/drm/i915/display/intel_opregion.h +++ b/drivers/gpu/drm/i915/display/intel_opregion.h @@ -76,6 +76,8 @@ int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv); struct edid *intel_opregion_get_edid(struct intel_connector *connector); +bool intel_opregion_headless_sku(struct drm_i915_private *i915); + #else /* CONFIG_ACPI*/ static inline int intel_opregion_setup(struct drm_i915_private *dev_priv) @@ -127,6 +129,11 @@ intel_opregion_get_edid(struct intel_connector *connector) return NULL; } +static inline bool intel_opregion_headless_sku(struct drm_i915_private *i915) +{ + return false; +} + #endif /* CONFIG_ACPI */ #endif