From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4E13C433DF for ; Thu, 18 Jun 2020 22:27:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE763207D8 for ; Thu, 18 Jun 2020 22:27:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="GZdS82D+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729010AbgFRW1O (ORCPT ); Thu, 18 Jun 2020 18:27:14 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:45771 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728597AbgFRW1N (ORCPT ); Thu, 18 Jun 2020 18:27:13 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1592519233; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=cgQ3rQPARSswpvg87Oo6JZ0BG0gpNPuTgsQQ63p80OU=; b=GZdS82D+VryshO5gKDOlIbdhQDCz+7UqTZgcTeXY1ug7TgQUb8rRJFfZIsuHeI/csStK3hyz DD5t8bN17s3Ox3C0sJkgHBnvb9S6GR3yV/EUJrbL1gfrmMoRZZD7DY0z35yCa1mHCacU6nj3 40BlJo/QyEtx/a3u/7bwg6wYPJA= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI1YmJiNiIsICJkZXZpY2V0cmVlQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n10.prod.us-east-1.postgun.com with SMTP id 5eebea3dc76a4e7a2aac2d04 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 18 Jun 2020 22:27:09 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id F1772C433B1; Thu, 18 Jun 2020 22:27:07 +0000 (UTC) Received: from linuxdisplay-lab-04.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tanmay) by smtp.codeaurora.org (Postfix) with ESMTPSA id 6D617C433CA; Thu, 18 Jun 2020 22:27:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 6D617C433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=tanmay@codeaurora.org From: Tanmay Shah To: robh+dt@kernel.org, swboyd@chromium.org, sam@ravnborg.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, seanpaul@chromium.org, robdclark@gmail.com, daniel@ffwll.ch, airlied@linux.ie, aravindh@codeaurora.org, abhinavk@codeaurora.org, chandanu@codeaurora.org, varar@codeaurora.org, Tanmay Shah , Jani Nikula Subject: [PATCH v7 2/6] drm: add constant N value in helper file Date: Thu, 18 Jun 2020 15:26:10 -0700 Message-Id: <20200618222614.14061-3-tanmay@codeaurora.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200618222614.14061-1-tanmay@codeaurora.org> References: <20200618222614.14061-1-tanmay@codeaurora.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Chandan Uddaraju The constant N value (0x8000) is used by i915 DP driver. Define this value in dp helper header file to use in multiple Display Port drivers. Change i915 driver accordingly. Change in v6: Change commit message Signed-off-by: Chandan Uddaraju Signed-off-by: Vara Reddy Signed-off-by: Tanmay Shah Reviewed-by: Stephen Boyd Acked-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_display.c | 2 +- include/drm/drm_dp_helper.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 9ea1a397d1b5..4b2cfff5b761 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -8085,7 +8085,7 @@ static void compute_m_n(unsigned int m, unsigned int n, * which the devices expect also in synchronous clock mode. */ if (constant_n) - *ret_n = 0x8000; + *ret_n = DP_LINK_CONSTANT_N_VALUE; else *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX); diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 2035ac44afde..589132ab9ab6 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1134,6 +1134,7 @@ #define DP_MST_PHYSICAL_PORT_0 0 #define DP_MST_LOGICAL_PORT_0 8 +#define DP_LINK_CONSTANT_N_VALUE 0x8000 #define DP_LINK_STATUS_SIZE 6 bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], int lane_count); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project