From patchwork Fri Sep 12 17:43:08 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: vandana.kannan@intel.com X-Patchwork-Id: 4896701 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 C01C69F430 for ; Fri, 12 Sep 2014 17:24:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 31D302024C for ; Fri, 12 Sep 2014 17:29:44 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 1DD72200E8 for ; Fri, 12 Sep 2014 17:29:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 283336E759; Fri, 12 Sep 2014 10:29:42 -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 39B836E759 for ; Fri, 12 Sep 2014 10:29:41 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 12 Sep 2014 10:29:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,514,1406617200"; d="scan'208";a="572402836" Received: from vkannan-desktop.iind.intel.com ([10.223.25.137]) by orsmga001.jf.intel.com with ESMTP; 12 Sep 2014 10:29:17 -0700 From: Vandana Kannan To: intel-gfx@lists.freedesktop.org Date: Fri, 12 Sep 2014 23:13:08 +0530 Message-Id: <1410543789-10815-6-git-send-email-vandana.kannan@intel.com> X-Mailer: git-send-email 2.0.1 In-Reply-To: <1410543789-10815-1-git-send-email-vandana.kannan@intel.com> References: <1410543789-10815-1-git-send-email-vandana.kannan@intel.com> Subject: [Intel-gfx] [RFC 5/6] drm/i915/bdw: Add support for DRRS to switch RR 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=-6.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 For Broadwell, there is one instance of Transcoder MN values per transcoder. For dynamic switching between multiple refreshr rates, M/N values may be reprogrammed on the fly. Link N programming triggers update of all data and link M & N registers and the new M/N values will be used in the next frame that is output. Signed-off-by: Vandana Kannan Signed-off-by: Pradeep Bhat --- drivers/gpu/drm/i915/intel_display.c | 9 +++------ drivers/gpu/drm/i915/intel_dp.c | 15 ++++++++++++++- drivers/gpu/drm/i915/intel_drv.h | 3 +++ 3 files changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3bf1732..db43022 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -93,9 +93,6 @@ static int intel_framebuffer_init(struct drm_device *dev, struct drm_i915_gem_object *obj); static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc); static void intel_set_pipe_timings(struct intel_crtc *intel_crtc); -static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc, - struct intel_link_m_n *m_n, - struct intel_link_m_n *m2_n2); static void ironlake_set_pipeconf(struct drm_crtc *crtc); static void haswell_set_pipeconf(struct drm_crtc *crtc); static void intel_set_pipe_csc(struct drm_crtc *crtc); @@ -5643,9 +5640,9 @@ static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc, I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n); } -static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc, - struct intel_link_m_n *m_n, - struct intel_link_m_n *m2_n2) +void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc, + struct intel_link_m_n *m_n, + struct intel_link_m_n *m2_n2) { struct drm_device *dev = crtc->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index bd0415b..a46279f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4856,7 +4856,20 @@ static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) return; } - if (INTEL_INFO(dev)->gen > 6 && INTEL_INFO(dev)->gen < 8) { + if (INTEL_INFO(dev)->gen >= 8) { + switch(index) { + case DRRS_HIGH_RR: + intel_dp_set_m_n(intel_crtc); + break; + case DRRS_LOW_RR: + intel_cpu_transcoder_set_m_n(intel_crtc, + &intel_crtc->config.dp_m2_n2, NULL); + break; + case DRRS_MAX_RR: + default: + break; + } + } else if (INTEL_INFO(dev)->gen > 6) { reg = PIPECONF(intel_crtc->config.cpu_transcoder); val = I915_READ(reg); if (index > DRRS_HIGH_RR) { diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 380bfe4..a605273 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -881,6 +881,9 @@ void hsw_disable_pc8(struct drm_i915_private *dev_priv); void intel_dp_get_m_n(struct intel_crtc *crtc, struct intel_crtc_config *pipe_config); void intel_dp_set_m_n(struct intel_crtc *crtc); +void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc, + struct intel_link_m_n *m_n, + struct intel_link_m_n *m2_n2); int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n); void ironlake_check_encoder_dotclock(const struct intel_crtc_config *pipe_config,