From patchwork Thu May 7 04:22:09 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sonika.jindal@intel.com X-Patchwork-Id: 6353641 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 38DB59F32B for ; Thu, 7 May 2015 04:31:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 59E90203AD for ; Thu, 7 May 2015 04:31:19 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 589CB20351 for ; Thu, 7 May 2015 04:31:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E4D066E76E; Wed, 6 May 2015 21:31:17 -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 E493B6E76E for ; Wed, 6 May 2015 21:31:16 -0700 (PDT) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP; 06 May 2015 21:31:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,382,1427785200"; d="scan'208";a="567553249" Received: from sonikaji-desktop.iind.intel.com ([10.223.25.81]) by orsmga003.jf.intel.com with ESMTP; 06 May 2015 21:31:16 -0700 From: Sonika Jindal To: intel-gfx@lists.freedesktop.org Date: Thu, 7 May 2015 09:52:09 +0530 Message-Id: <1430972529-26279-3-git-send-email-sonika.jindal@intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1430972529-26279-1-git-send-email-sonika.jindal@intel.com> References: <1430972529-26279-1-git-send-email-sonika.jindal@intel.com> Subject: [Intel-gfx] [PATCH 3/3] drm/i915/bxt: edp1.4 Intermediate Freq support 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: , 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 BXT supports following intermediate link rates for edp: 2.16GHz, 2.43GHz, 3.24GHz, 4.32GHz. Adding support for programming the intermediate rates. Signed-off-by: Sonika Jindal Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com) --- drivers/gpu/drm/i915/intel_ddi.c | 44 ++++++++++++++++++++++++++++++++++++-- drivers/gpu/drm/i915/intel_dp.c | 7 +++++- 2 files changed, 48 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 9c1e74a..c0cb5f7 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1397,8 +1397,7 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc, clk_div.lanestagger = 0x04; else clk_div.lanestagger = 0x02; - } else if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || - intel_encoder->type == INTEL_OUTPUT_EDP) { + } else if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) { struct drm_encoder *encoder = &intel_encoder->base; struct intel_dp *intel_dp = enc_to_intel_dp(encoder); @@ -1416,8 +1415,49 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc, clk_div = bxt_dp_clk_val[0]; DRM_ERROR("Unknown link rate\n"); } + } else if (intel_encoder->type == INTEL_OUTPUT_EDP) { + struct drm_encoder *encoder = &intel_encoder->base; + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + int link_rate; + + /* + * If edp1.4 intermediate frequency support is present, we set + * link_bw to 0 and a valid rate index in rate_select. + */ + if (intel_dp->link_bw) + link_rate = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); + else + link_rate = intel_dp->sink_rates[intel_dp->rate_select]; + + switch (link_rate) { + case 162000: + clk_div = bxt_dp_clk_val[0]; + break; + case 216000: + clk_div = bxt_dp_clk_val[3]; + break; + case 243000: + clk_div = bxt_dp_clk_val[4]; + break; + case 270000: + clk_div = bxt_dp_clk_val[1]; + break; + case 324000: + clk_div = bxt_dp_clk_val[5]; + break; + case 432000: + clk_div = bxt_dp_clk_val[6]; + break; + case 540000: + clk_div = bxt_dp_clk_val[2]; + break; + default: + clk_div = bxt_dp_clk_val[0]; + DRM_ERROR("Unknown link rate\n"); + } } + crtc_state->dpll_hw_state.ebb0 = PORT_PLL_P1(clk_div.p1) | PORT_PLL_P2(clk_div.p2); crtc_state->dpll_hw_state.pll0 = clk_div.m2_int; diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index c9d50d1..e6ee7c6 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -85,6 +85,8 @@ static const struct dp_link_dpll chv_dpll[] = { { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } }; +static const int bxt_rates[] = { 162000, 216000, 243000, 270000, + 324000, 432000, 540000 }; static const int skl_rates[] = { 162000, 216000, 270000, 324000, 432000, 540000 }; static const int chv_rates[] = { 162000, 202500, 210000, 216000, @@ -1161,7 +1163,10 @@ intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) static int intel_dp_source_rates(struct drm_device *dev, const int **source_rates) { - if (IS_SKYLAKE(dev)) { + if (IS_BROXTON(dev)) { + *source_rates = bxt_rates; + return ARRAY_SIZE(bxt_rates); + } else if (IS_SKYLAKE(dev)) { *source_rates = skl_rates; return ARRAY_SIZE(skl_rates); } else if (IS_CHERRYVIEW(dev)) {