From patchwork Thu Jul 11 21:44:57 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rodrigo Vivi X-Patchwork-Id: 2826601 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 216499F7D6 for ; Thu, 11 Jul 2013 21:47:08 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 40A7B20187 for ; Thu, 11 Jul 2013 21:47:07 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 5595420182 for ; Thu, 11 Jul 2013 21:47:06 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3E973E6694 for ; Thu, 11 Jul 2013 14:47:06 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail-gg0-f175.google.com (mail-gg0-f175.google.com [209.85.161.175]) by gabe.freedesktop.org (Postfix) with ESMTP id 89C96E6691 for ; Thu, 11 Jul 2013 14:45:25 -0700 (PDT) Received: by mail-gg0-f175.google.com with SMTP id q1so2858886ggm.6 for ; Thu, 11 Jul 2013 14:45:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=0QmK8+yJ3Kg5N0j3ZdlZRbucyJipdLUVOmaItyXKKB4=; b=nTAEjGn2rEjWKErI++DPvlMh+VcjaslfBZ3kwU/v/MkxxJeBLM/8RXPPaKQ8fxCElI QmEXhNg2wJ3CKKjwrxoduIcfJ7lq9rnxn3h8J+g3ZzgEIYPM4JPO8XBHUlur4LxqqE4y vu2NieoGxtBHiCP3ivN1u7D5EJPS54d/CwYV71uSE/HIsUjS+e174N0aeFWULirj4cfB XEGbrnGSOtCUVmKQE1rBpLHwXL7wRcXiWkHfcw1lK9+A42dxR2IaQIEU8My+AOE5Rhts v1szTSpkS5LrnymTfu/iB9SHoA0uLeOlO00QjuRT9T44hkrBmUiOrPsjTYFiUQVqwU67 RhsA== X-Received: by 10.236.83.110 with SMTP id p74mr22213644yhe.194.1373579125108; Thu, 11 Jul 2013 14:45:25 -0700 (PDT) Received: from localhost.localdomain ([186.204.164.107]) by mx.google.com with ESMTPSA id v68sm62992311yhn.22.2013.07.11.14.45.22 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 11 Jul 2013 14:45:24 -0700 (PDT) From: Rodrigo Vivi To: intel-gfx@lists.freedesktop.org Date: Thu, 11 Jul 2013 18:44:57 -0300 Message-Id: <1373579105-1732-4-git-send-email-rodrigo.vivi@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1373579105-1732-1-git-send-email-rodrigo.vivi@gmail.com> References: <1373579105-1732-1-git-send-email-rodrigo.vivi@gmail.com> Subject: [Intel-gfx] [PATCH 03/11] drm/i915: split aux_clock_divider logic in a separated function for reuse. X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, 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 Prep patch for reuse aux_clock_divider with EDP_PSR_AUX_CTL setup. Reviewed-by: Paulo Zanoni Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/i915/intel_dp.c | 58 +++++++++++++++++++++++------------------ 1 file changed, 33 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index bf0bfa1..d273e36 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -276,29 +276,12 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) return status; } -static int -intel_dp_aux_ch(struct intel_dp *intel_dp, - uint8_t *send, int send_bytes, - uint8_t *recv, int recv_size) +static uint32_t get_aux_clock_divider(struct intel_dp *intel_dp) { struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); struct drm_device *dev = intel_dig_port->base.base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; - uint32_t ch_data = ch_ctl + 4; - int i, ret, recv_bytes; - uint32_t status; - uint32_t aux_clock_divider; - int try, precharge; - bool has_aux_irq = INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev); - /* dp aux is extremely sensitive to irq latency, hence request the - * lowest possible wakeup latency and so prevent the cpu from going into - * deep sleep states. - */ - pm_qos_update_request(&dev_priv->pm_qos, 0); - - intel_dp_check_edp(intel_dp); /* The clock divider is based off the hrawclk, * and would like to run at 2MHz. So, take the * hrawclk value and divide by 2 and use that @@ -307,23 +290,48 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, * clock divider. */ if (IS_VALLEYVIEW(dev)) { - aux_clock_divider = 100; + return 100; } else if (intel_dig_port->port == PORT_A) { if (HAS_DDI(dev)) - aux_clock_divider = DIV_ROUND_CLOSEST( + return DIV_ROUND_CLOSEST( intel_ddi_get_cdclk_freq(dev_priv), 2000); else if (IS_GEN6(dev) || IS_GEN7(dev)) - aux_clock_divider = 200; /* SNB & IVB eDP input clock at 400Mhz */ + return 200; /* SNB & IVB eDP input clock at 400Mhz */ else - aux_clock_divider = 225; /* eDP input clock at 450Mhz */ + return 225; /* eDP input clock at 450Mhz */ } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { /* Workaround for non-ULT HSW */ - aux_clock_divider = 74; + return 74; } else if (HAS_PCH_SPLIT(dev)) { - aux_clock_divider = DIV_ROUND_UP(intel_pch_rawclk(dev), 2); + return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); } else { - aux_clock_divider = intel_hrawclk(dev) / 2; + return intel_hrawclk(dev) / 2; } +} + +static int +intel_dp_aux_ch(struct intel_dp *intel_dp, + uint8_t *send, int send_bytes, + uint8_t *recv, int recv_size) +{ + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + struct drm_device *dev = intel_dig_port->base.base.dev; + struct drm_i915_private *dev_priv = dev->dev_private; + uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; + uint32_t ch_data = ch_ctl + 4; + int i, ret, recv_bytes; + uint32_t status; + uint32_t aux_clock_divider = get_aux_clock_divider(intel_dp); + int try, precharge; + bool has_aux_irq = INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev); + + /* dp aux is extremely sensitive to irq latency, hence request the + * lowest possible wakeup latency and so prevent the cpu from going into + * deep sleep states. + */ + pm_qos_update_request(&dev_priv->pm_qos, 0); + + intel_dp_check_edp(intel_dp); if (IS_GEN6(dev)) precharge = 3;