From patchwork Tue Jul 1 13:49:00 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 4458631 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8D9F8BEEAA for ; Tue, 1 Jul 2014 13:49:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9B0E720166 for ; Tue, 1 Jul 2014 13:49:22 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id ADB38203EB for ; Tue, 1 Jul 2014 13:49:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 468DB6E08C; Tue, 1 Jul 2014 06:49:18 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTP id 7BF186E089 for ; Tue, 1 Jul 2014 06:49:17 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP; 01 Jul 2014 06:43:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,581,1400050800"; d="scan'208";a="555827220" Received: from kdjayasu-mobl1.gar.corp.intel.com (HELO localhost) ([10.252.120.160]) by fmsmga001.fm.intel.com with ESMTP; 01 Jul 2014 06:49:14 -0700 From: Jani Nikula To: intel-gfx@lists.freedesktop.org, Mengdong Lin Date: Tue, 1 Jul 2014 16:49:00 +0300 Message-Id: X-Mailer: git-send-email 2.0.0 In-Reply-To: References: In-Reply-To: References: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Cc: jani.nikula@intel.com Subject: [Intel-gfx] [RFC PATCH 1/3] drm/i915: add opregion function to notify BIOS of CDCLK changes X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Notifying the BIOS about CDCLK changes lets it program audio controller EM4/EM5 divider values accordingly. Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_drv.h | 6 ++++++ drivers/gpu/drm/i915/intel_opregion.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 8cea59649ef2..2feb8215f9fa 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2602,6 +2602,7 @@ extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable); extern int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state); +extern int intel_opregion_notify_cdclk(struct drm_device *dev, int cdclk); #else static inline int intel_opregion_setup(struct drm_device *dev) { return 0; } static inline void intel_opregion_init(struct drm_device *dev) { return; } @@ -2617,6 +2618,11 @@ intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) { return 0; } +static inline int +intel_opregion_notify_cdclk(struct drm_device *dev, int cdclk) +{ + return 0; +} #endif /* intel_acpi.c */ diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index 2e2c71fcc9ed..6450d2625624 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -219,6 +219,7 @@ struct opregion_asle { #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) +#define SWSCI_SBCB_CD_CLOCK_CHANGE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 22) #define ACPI_OTHER_OUTPUT (0<<8) #define ACPI_VGA_OUTPUT (1<<8) @@ -395,6 +396,34 @@ int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) return -EINVAL; } +int intel_opregion_notify_cdclk(struct drm_device *dev, int cdclk) +{ + u32 parm; + + if (!IS_BROADWELL(dev)) + return 0; + + switch (cdclk) { + case 337500: + parm = 2; + break; + case 450000: + parm = 0; + break; + case 540000: + parm = 1; + break; + case 675000: + parm = 3; + break; + default: + WARN_ONCE(1, "unknown cdclk %d\n", cdclk); + return -EINVAL; + } + + return swsci(dev, SWSCI_SBCB_CD_CLOCK_CHANGE, parm, NULL); +} + static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) { struct drm_i915_private *dev_priv = dev->dev_private;