From patchwork Tue Mar 31 11:14:03 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 6128871 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 [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 862F6BF4A6 for ; Tue, 31 Mar 2015 11:14:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8FA0420165 for ; Tue, 31 Mar 2015 11:14:31 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 6BF0A20160 for ; Tue, 31 Mar 2015 11:14:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DA7EB6E150; Tue, 31 Mar 2015 04:14:29 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 8B9C46E150 for ; Tue, 31 Mar 2015 04:14:28 -0700 (PDT) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 31 Mar 2015 04:14:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,500,1422950400"; d="scan'208";a="706659491" Received: from sorvi.fi.intel.com ([10.237.72.157]) by orsmga002.jf.intel.com with ESMTP; 31 Mar 2015 04:14:27 -0700 From: Mika Kahola To: intel-gfx@lists.freedesktop.org Date: Tue, 31 Mar 2015 14:14:03 +0300 Message-Id: <1427800443-5046-1-git-send-email-mika.kahola@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <20150331110535.GB3154@sorvi> References: <20150331110535.GB3154@sorvi> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 10/19] drm/i915: Cache current cdclk frequency in dev_priv X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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" 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 Rather that extracting the current cdclk freuqncy every time someone wants to know it, cache the current value and use that. VLV/CHV already stored a cached value there so just expand that to cover all platforms. Signed-off-by: Ville Syrjälä Signed-off-by: Mika Kahola --- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_display.c | 42 +++++++++++++++++++++++------------- 2 files changed, 28 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 4ef320c..38279f6 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1660,7 +1660,7 @@ struct drm_i915_private { int num_fence_regs; /* 8 on pre-965, 16 otherwise */ unsigned int fsb_freq, mem_freq, is_ddr3; - unsigned int vlv_cdclk_freq; + unsigned int cdclk_freq; unsigned int hpll_freq; /** diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index d436171..9e6c289 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5008,20 +5008,28 @@ static int valleyview_get_vco(struct drm_i915_private *dev_priv) return vco_freq[hpll_freq] * 1000; } -static void vlv_update_cdclk(struct drm_device *dev) +static void intel_update_cdclk(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - dev_priv->vlv_cdclk_freq = dev_priv->display.get_display_clock_speed(dev); + dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev); DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n", - dev_priv->vlv_cdclk_freq); + dev_priv->cdclk_freq); /* * Program the gmbus_freq based on the cdclk frequency. * BSpec erroneously claims we should aim for 4MHz, but * in fact 1MHz is the correct frequency. */ - I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->vlv_cdclk_freq, 1000)); + I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000)); + if (IS_VALLEYVIEW(dev)) { + /* + * Program the gmbus_freq based on the cdclk frequency. + * BSpec erroneously claims we should aim for 4MHz, but + * in fact 1MHz is the correct frequency. + */ + I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000)); + } } /* Adjust CDclk dividers to allow high res or save power if possible */ @@ -5030,7 +5038,7 @@ static void valleyview_set_cdclk(struct drm_device *dev, int cdclk) struct drm_i915_private *dev_priv = dev->dev_private; u32 val, cmd; - WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq); + WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->cdclk_freq); if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */ cmd = 2; @@ -5086,7 +5094,7 @@ static void valleyview_set_cdclk(struct drm_device *dev, int cdclk) vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val); mutex_unlock(&dev_priv->dpio_lock); - vlv_update_cdclk(dev); + intel_update_cdclk(dev); } static void cherryview_set_cdclk(struct drm_device *dev, int cdclk) @@ -5094,7 +5102,7 @@ static void cherryview_set_cdclk(struct drm_device *dev, int cdclk) struct drm_i915_private *dev_priv = dev->dev_private; u32 val, cmd; - WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq); + WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->cdclk_freq); switch (cdclk) { case 333333: @@ -5126,7 +5134,7 @@ static void cherryview_set_cdclk(struct drm_device *dev, int cdclk) } mutex_unlock(&dev_priv->rps.hw_lock); - vlv_update_cdclk(dev); + intel_update_cdclk(dev); } static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv, @@ -5182,8 +5190,7 @@ static void valleyview_modeset_global_pipes(struct drm_device *dev, struct intel_crtc *intel_crtc; int max_pixclk = intel_mode_max_pixclk(dev_priv); - if (valleyview_calc_cdclk(dev_priv, max_pixclk) == - dev_priv->vlv_cdclk_freq) + if (valleyview_calc_cdclk(dev_priv, max_pixclk) == dev_priv->cdclk_freq) return; /* disable/enable all currently active pipes while we change cdclk */ @@ -5201,7 +5208,7 @@ static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv) else default_credits = PFI_CREDIT(8); - if (DIV_ROUND_CLOSEST(dev_priv->vlv_cdclk_freq, 1000) >= dev_priv->rps.cz_freq) { + if (DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 1000) >= dev_priv->rps.cz_freq) { /* CHV suggested value is 31 or 63 */ if (IS_CHERRYVIEW(dev_priv)) credits = PFI_CREDIT_31; @@ -5235,7 +5242,7 @@ static void valleyview_modeset_global_resources(struct drm_atomic_state *state) int max_pixclk = intel_mode_max_pixclk(dev_priv); int req_cdclk = valleyview_calc_cdclk(dev_priv, max_pixclk); - if (req_cdclk != dev_priv->vlv_cdclk_freq) { + if (req_cdclk != dev_priv->cdclk_freq) { /* * FIXME: We can end up here with all power domains off, yet * with a CDCLK frequency other than the minimum. To account @@ -8625,6 +8632,8 @@ static void hsw_disable_lcpll(struct drm_i915_private *dev_priv, I915_WRITE(LCPLL_CTL, val); POSTING_READ(LCPLL_CTL); } + + intel_update_cdclk(dev_priv->dev); } /* @@ -8676,6 +8685,8 @@ static void hsw_restore_lcpll(struct drm_i915_private *dev_priv) } intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); + + intel_update_cdclk(dev_priv->dev); } /* @@ -12592,6 +12603,8 @@ static void intel_shared_dpll_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + intel_update_cdclk(dev); + if (HAS_DDI(dev)) intel_ddi_pll_init(dev); else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) @@ -14059,10 +14072,9 @@ static void i915_disable_vga(struct drm_device *dev) void intel_modeset_init_hw(struct drm_device *dev) { - intel_prepare_ddi(dev); + intel_update_cdclk(dev); - if (IS_VALLEYVIEW(dev)) - vlv_update_cdclk(dev); + intel_prepare_ddi(dev); intel_init_clock_gating(dev);