From patchwork Thu Jun 16 12:00:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gupta, Anshuman" X-Patchwork-Id: 12883778 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 76ABCC43334 for ; Thu, 16 Jun 2022 12:01:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4D52011A4AC; Thu, 16 Jun 2022 12:01:32 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id EE88211A4AC; Thu, 16 Jun 2022 12:01:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1655380890; x=1686916890; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KyeKOIb9ToFUz0oO+c4cuz+Em5bBHZji6YQ4o1dfiy4=; b=HMCBPEzT3SJNhCe7rbSrMfCGz8eIvs9jq+y2Oz21w1KBH44PyobIV6A0 U+kuNzoEOCiDWWTCrRkPw3AuJPYLuvq0zVERezPqxzzD+yUpL9MqXXE2Q E43C1yF9Sl2c6mCtJSpnVKydLaNPFa4VPRae04PsAOqrH7tRm9SOIvHjc DHgHzhmqU0baz74wi63/KNnOwD9KUYmcRMTjLcF7+f20RHt6a571+9nRs nTBkWxzeHDLIQOhFmQagCBtiXS6N26+B9RdkZit9v17tjSGstr7USZjpd 9fhnYCYi1wD0azfmr44K+sGDRB473V4sGqkF6YYyqYJoB1PTUaJ2ETEKI Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10379"; a="343189568" X-IronPort-AV: E=Sophos;i="5.91,305,1647327600"; d="scan'208";a="343189568" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jun 2022 05:01:29 -0700 X-IronPort-AV: E=Sophos;i="5.91,305,1647327600"; d="scan'208";a="713330880" Received: from srr4-3-linux-105-anshuma1.iind.intel.com ([10.223.74.179]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jun 2022 05:01:26 -0700 From: Anshuman Gupta To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH v2 2/9] drm/i915/dg1: OpRegion PCON DG1 MBD config support Date: Thu, 16 Jun 2022 17:30:59 +0530 Message-Id: <20220616120106.24353-3-anshuman.gupta@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20220616120106.24353-1-anshuman.gupta@intel.com> References: <20220616120106.24353-1-anshuman.gupta@intel.com> MIME-Version: 1.0 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: tilak.tangudu@intel.com, tvrtko.ursulin@intel.com, Jani Nikula , Anshuman Gupta , jon.ewins@intel.com, badal.nilawar@intel.com, rodrigo.vivi@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" DGFX cards support both Add in Card(AIC) and Mother Board Down(MBD) configs. MBD config requires HOST BIOS GPIO toggling support in order to enable/disable VRAM SR using ACPI OpRegion. i915 requires to check OpRegion PCON MBD Config bits to discover whether Gfx Card is MBD config before enabling VRSR. BSpec: 53440 Cc: Jani Nikula Cc: Rodrigo Vivi Signed-off-by: Anshuman Gupta --- drivers/gpu/drm/i915/display/intel_opregion.c | 43 +++++++++++++++++++ drivers/gpu/drm/i915/display/intel_opregion.h | 6 +++ 2 files changed, 49 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c index 11d8c5bb23ac..c8cdcde89dfc 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_DG1_MBD_CONFIG BIT(9) +#define PCON_DG1_MBD_CONFIG_FIELD_VALID BIT(10) #define PCON_DGFX_BIOS_SUPPORTS_VRSR BIT(11) #define PCON_DGFX_BIOS_SUPPORTS_VRSR_FIELD_VALID BIT(12) #define PCON_HEADLESS_SKU BIT(13) @@ -1255,6 +1257,44 @@ void intel_opregion_unregister(struct drm_i915_private *i915) opregion->lid_state = NULL; } +static bool intel_opregion_dg1_mbd_config(struct drm_i915_private *i915) +{ + struct intel_opregion *opregion = &i915->opregion; + + if (!IS_DG1(i915)) + return false; + + if (!opregion) + return false; + + if (opregion->header->pcon & PCON_DG1_MBD_CONFIG_FIELD_VALID) + return opregion->header->pcon & PCON_DG1_MBD_CONFIG; + else + return false; +} + +/** + * intel_opregion_vram_sr_required(). + * @i915 i915 device priv data. + * + * It checks whether a DGFX card is Mother Board Down config depending + * on respective discrete platform. + * + * Returns: + * It returns a boolean whether opregion vram_sr support is required. + */ +bool +intel_opregion_vram_sr_required(struct drm_i915_private *i915) +{ + if (!IS_DGFX(i915)) + return false; + + if (IS_DG1(i915)) + return intel_opregion_dg1_mbd_config(i915); + + return false; +} + /** * intel_opregion_bios_supports_vram_sr() get HOST BIOS VRAM Self * Refresh capability support. @@ -1298,6 +1338,9 @@ void intel_opregion_vram_sr(struct drm_i915_private *i915, bool enable) if (!opregion) return; + if (!intel_opregion_vram_sr_required(i915)) + return; + if (drm_WARN(&i915->drm, !opregion->asle, "ASLE MAILBOX3 is not available\n")) return; diff --git a/drivers/gpu/drm/i915/display/intel_opregion.h b/drivers/gpu/drm/i915/display/intel_opregion.h index 73c9d81d5ee6..ad40c97f9565 100644 --- a/drivers/gpu/drm/i915/display/intel_opregion.h +++ b/drivers/gpu/drm/i915/display/intel_opregion.h @@ -77,6 +77,7 @@ 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_bios_supports_vram_sr(struct drm_i915_private *i915); void intel_opregion_vram_sr(struct drm_i915_private *i915, bool enable); +bool intel_opregion_vram_sr_required(struct drm_i915_private *i915); bool intel_opregion_headless_sku(struct drm_i915_private *i915); @@ -145,6 +146,11 @@ static void intel_opregion_vram_sr(struct drm_i915_private *i915, bool enable) { } +static bool intel_opregion_vram_sr_required(struct drm_i915_private *i915) +{ + return false; +} + #endif /* CONFIG_ACPI */ #endif