From patchwork Fri Sep 9 23:29:52 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Navare, Manasi" X-Patchwork-Id: 9324581 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EA0E260752 for ; Fri, 9 Sep 2016 23:29:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E238028707 for ; Fri, 9 Sep 2016 23:29:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D58E7285F7; Fri, 9 Sep 2016 23:29:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 71A992A02D for ; Fri, 9 Sep 2016 23:29:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E70D26E2A1; Fri, 9 Sep 2016 23:29:54 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id D17336E29B for ; Fri, 9 Sep 2016 23:29:53 +0000 (UTC) Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP; 09 Sep 2016 16:29:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.30,307,1470726000"; d="scan'208";a="7004493" Received: from manasi-otcmedia.jf.intel.com ([10.7.199.175]) by orsmga004.jf.intel.com with ESMTP; 09 Sep 2016 16:29:53 -0700 From: Manasi Navare To: intel-gfx@lists.freedesktop.org Date: Fri, 9 Sep 2016 16:29:52 -0700 Message-Id: <1473463793-1259-2-git-send-email-manasi.d.navare@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1473463793-1259-1-git-send-email-manasi.d.navare@intel.com> References: <1473463793-1259-1-git-send-email-manasi.d.navare@intel.com> In-Reply-To: <1473364931-5657-2-git-send-email-manasi.d.navare@intel.com> References: <1473364931-5657-2-git-send-email-manasi.d.navare@intel.com> Subject: [Intel-gfx] [PATCH 13-1/14] drm/i915: Change the placement of some static functions in intel_dp.c 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-Virus-Scanned: ClamAV using ClamSMTP These static helper functions are required to be used within upfront link training related functions so they need to be placed at the top of the file. Signed-off-by: Manasi Navare --- drivers/gpu/drm/i915/intel_dp.c | 182 ++++++++++++++++++++-------------------- 1 file changed, 91 insertions(+), 91 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 75350b2..429ecf8 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -190,6 +190,97 @@ intel_dp_max_data_rate(int max_link_clock, int max_lanes) return (max_link_clock * max_lanes * 8) / 10; } +static int +intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) +{ + if (intel_dp->num_sink_rates) { + *sink_rates = intel_dp->sink_rates; + return intel_dp->num_sink_rates; + } + + *sink_rates = default_rates; + + return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; +} + +bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp) +{ + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + + /* WaDisableHBR2:skl */ + if (IS_SKL_REVID(dev_priv, 0, SKL_REVID_B0)) + return false; + + if ((IS_HASWELL(dev_priv) && !IS_HSW_ULX(dev_priv)) || + IS_BROADWELL(dev_priv) || (INTEL_GEN(dev_priv) >= 9)) + return true; + else + return false; +} + +static int +intel_dp_source_rates(struct intel_dp *intel_dp, const int **source_rates) +{ + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + int size; + + if (IS_BROXTON(dev_priv)) { + *source_rates = bxt_rates; + size = ARRAY_SIZE(bxt_rates); + } else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { + *source_rates = skl_rates; + size = ARRAY_SIZE(skl_rates); + } else { + *source_rates = default_rates; + size = ARRAY_SIZE(default_rates); + } + + /* This depends on the fact that 5.4 is last value in the array */ + if (!intel_dp_source_supports_hbr2(intel_dp)) + size--; + + return size; +} + +static int intersect_rates(const int *source_rates, int source_len, + const int *sink_rates, int sink_len, + int *common_rates) +{ + int i = 0, j = 0, k = 0; + + while (i < source_len && j < sink_len) { + if (source_rates[i] == sink_rates[j]) { + if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) + return k; + common_rates[k] = source_rates[i]; + ++k; + ++i; + ++j; + } else if (source_rates[i] < sink_rates[j]) { + ++i; + } else { + ++j; + } + } + return k; +} + +static int intel_dp_common_rates(struct intel_dp *intel_dp, + int *common_rates) +{ + const int *source_rates, *sink_rates; + int source_len, sink_len; + + sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); + source_len = intel_dp_source_rates(intel_dp, &source_rates); + + return intersect_rates(source_rates, source_len, + sink_rates, sink_len, + common_rates); +} + static enum drm_mode_status intel_dp_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) @@ -1256,60 +1347,6 @@ intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) intel_dp->aux.transfer = intel_dp_aux_transfer; } -static int -intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) -{ - if (intel_dp->num_sink_rates) { - *sink_rates = intel_dp->sink_rates; - return intel_dp->num_sink_rates; - } - - *sink_rates = default_rates; - - return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; -} - -bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp) -{ - struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); - struct drm_device *dev = dig_port->base.base.dev; - - /* WaDisableHBR2:skl */ - if (IS_SKL_REVID(dev, 0, SKL_REVID_B0)) - return false; - - if ((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || IS_BROADWELL(dev) || - (INTEL_INFO(dev)->gen >= 9)) - return true; - else - return false; -} - -static int -intel_dp_source_rates(struct intel_dp *intel_dp, const int **source_rates) -{ - struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); - struct drm_device *dev = dig_port->base.base.dev; - int size; - - if (IS_BROXTON(dev)) { - *source_rates = bxt_rates; - size = ARRAY_SIZE(bxt_rates); - } else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { - *source_rates = skl_rates; - size = ARRAY_SIZE(skl_rates); - } else { - *source_rates = default_rates; - size = ARRAY_SIZE(default_rates); - } - - /* This depends on the fact that 5.4 is last value in the array */ - if (!intel_dp_source_supports_hbr2(intel_dp)) - size--; - - return size; -} - static void intel_dp_set_clock(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config) @@ -1343,43 +1380,6 @@ intel_dp_set_clock(struct intel_encoder *encoder, } } -static int intersect_rates(const int *source_rates, int source_len, - const int *sink_rates, int sink_len, - int *common_rates) -{ - int i = 0, j = 0, k = 0; - - while (i < source_len && j < sink_len) { - if (source_rates[i] == sink_rates[j]) { - if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) - return k; - common_rates[k] = source_rates[i]; - ++k; - ++i; - ++j; - } else if (source_rates[i] < sink_rates[j]) { - ++i; - } else { - ++j; - } - } - return k; -} - -static int intel_dp_common_rates(struct intel_dp *intel_dp, - int *common_rates) -{ - const int *source_rates, *sink_rates; - int source_len, sink_len; - - sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); - source_len = intel_dp_source_rates(intel_dp, &source_rates); - - return intersect_rates(source_rates, source_len, - sink_rates, sink_len, - common_rates); -} - static void snprintf_int_array(char *str, size_t len, const int *array, int nelem) {