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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 9BF72C34018 for ; Fri, 13 Dec 2019 20:38:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DB2F3246C0 for ; Fri, 13 Dec 2019 20:38:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727859AbfLMPFc (ORCPT ); Fri, 13 Dec 2019 10:05:32 -0500 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:27610 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727564AbfLMPFc (ORCPT ); Fri, 13 Dec 2019 10:05:32 -0500 Received-SPF: Pass (esa1.microchip.iphmx.com: domain of Claudiu.Beznea@microchip.com designates 198.175.253.82 as permitted sender) identity=mailfrom; client-ip=198.175.253.82; receiver=esa1.microchip.iphmx.com; envelope-from="Claudiu.Beznea@microchip.com"; x-sender="Claudiu.Beznea@microchip.com"; x-conformance=spf_only; x-record-type="v=spf1"; x-record-text="v=spf1 mx a:ushub1.microchip.com a:smtpout.microchip.com -exists:%{i}.spf.microchip.iphmx.com include:servers.mcsv.net include:mktomail.com include:spf.protection.outlook.com ~all" Received-SPF: None (esa1.microchip.iphmx.com: no sender authenticity information available from domain of postmaster@email.microchip.com) identity=helo; client-ip=198.175.253.82; receiver=esa1.microchip.iphmx.com; envelope-from="Claudiu.Beznea@microchip.com"; x-sender="postmaster@email.microchip.com"; x-conformance=spf_only Authentication-Results: esa1.microchip.iphmx.com; dkim=none (message not signed) header.i=none; spf=Pass smtp.mailfrom=Claudiu.Beznea@microchip.com; spf=None smtp.helo=postmaster@email.microchip.com; dmarc=pass (p=none dis=none) d=microchip.com IronPort-SDR: uVgVIoFgv+zyn1mJy1jOhCKRps55X6Y6NgJE8SfUWl3kBhO6VnIuWvpsYtL13bwGZNVImA46RC ZMaK5iC9085AHVu8/PRhZ9zkjSKe6SB6vzZfrFLbiVijEJM+0w/3N54uclq0VODX/ZKWrNSvJa 6XZX8c9WT0MGwh3zaLi8Sew7XwbGmzX4nTFxMbNuiEdUbl0XaiieAMrn/MhWUyiVihAy9rNMxU 4Jzn+4niayQ6QncYPkViuqy4gVpYQy9GZ5WjuDZ0HEW12aPHzlZ/jGCVfOD4tNYB1EuSv3rrr/ Pb8= X-IronPort-AV: E=Sophos;i="5.69,309,1571727600"; d="scan'208";a="61647016" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 Dec 2019 08:05:30 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Fri, 13 Dec 2019 08:05:30 -0700 Received: from m18063-ThinkPad-T460p.microchip.com (10.10.85.251) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1713.5 via Frontend Transport; Fri, 13 Dec 2019 08:05:25 -0700 From: Claudiu Beznea To: , , , , , , , CC: , , , Peter Rosin Subject: [PATCH v2 5/6] drm: atmel-hlcdc: prefer a lower pixel-clock than requested Date: Fri, 13 Dec 2019 17:04:55 +0200 Message-ID: <1576249496-4849-6-git-send-email-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576249496-4849-1-git-send-email-claudiu.beznea@microchip.com> References: <1576249496-4849-1-git-send-email-claudiu.beznea@microchip.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peter Rosin The intention was to only select a higher pixel-clock rate than the requested, if a slight overclocking would result in a rate significantly closer to the requested rate than if the conservative lower pixel-clock rate is selected. The fixed patch has the logic the other way around and actually prefers the higher frequency. Fix that. Fixes: f6f7ad323461 ("drm/atmel-hlcdc: allow selecting a higher pixel-clock than requested") Reported-by: Claudiu Beznea Tested-by: Claudiu Beznea Signed-off-by: Peter Rosin --- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c index 721fa88bf71d..10985134ce0b 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -121,8 +121,8 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c) int div_low = prate / mode_rate; if (div_low >= 2 && - ((prate / div_low - mode_rate) < - 10 * (mode_rate - prate / div))) + (10 * (prate / div_low - mode_rate) < + (mode_rate - prate / div))) /* * At least 10 times better when using a higher * frequency than requested, instead of a lower. -- 2.7.4 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 DB015C43603 for ; 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envelope-from="Claudiu.Beznea@microchip.com"; x-sender="Claudiu.Beznea@microchip.com"; x-conformance=spf_only; x-record-type="v=spf1"; x-record-text="v=spf1 mx a:ushub1.microchip.com a:smtpout.microchip.com -exists:%{i}.spf.microchip.iphmx.com include:servers.mcsv.net include:mktomail.com include:spf.protection.outlook.com ~all" Received-SPF: None (esa1.microchip.iphmx.com: no sender authenticity information available from domain of postmaster@email.microchip.com) identity=helo; client-ip=198.175.253.82; receiver=esa1.microchip.iphmx.com; envelope-from="Claudiu.Beznea@microchip.com"; x-sender="postmaster@email.microchip.com"; x-conformance=spf_only Authentication-Results: esa1.microchip.iphmx.com; dkim=none (message not signed) header.i=none; spf=Pass smtp.mailfrom=Claudiu.Beznea@microchip.com; spf=None smtp.helo=postmaster@email.microchip.com; dmarc=pass (p=none dis=none) d=microchip.com IronPort-SDR: uVgVIoFgv+zyn1mJy1jOhCKRps55X6Y6NgJE8SfUWl3kBhO6VnIuWvpsYtL13bwGZNVImA46RC ZMaK5iC9085AHVu8/PRhZ9zkjSKe6SB6vzZfrFLbiVijEJM+0w/3N54uclq0VODX/ZKWrNSvJa 6XZX8c9WT0MGwh3zaLi8Sew7XwbGmzX4nTFxMbNuiEdUbl0XaiieAMrn/MhWUyiVihAy9rNMxU 4Jzn+4niayQ6QncYPkViuqy4gVpYQy9GZ5WjuDZ0HEW12aPHzlZ/jGCVfOD4tNYB1EuSv3rrr/ Pb8= X-IronPort-AV: E=Sophos;i="5.69,309,1571727600"; d="scan'208";a="61647016" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 Dec 2019 08:05:30 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Fri, 13 Dec 2019 08:05:30 -0700 Received: from m18063-ThinkPad-T460p.microchip.com (10.10.85.251) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1713.5 via Frontend Transport; Fri, 13 Dec 2019 08:05:25 -0700 From: Claudiu Beznea To: , , , , , , , Subject: [PATCH v2 5/6] drm: atmel-hlcdc: prefer a lower pixel-clock than requested Date: Fri, 13 Dec 2019 17:04:55 +0200 Message-ID: <1576249496-4849-6-git-send-email-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576249496-4849-1-git-send-email-claudiu.beznea@microchip.com> References: <1576249496-4849-1-git-send-email-claudiu.beznea@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191213_070531_661855_186CC833 X-CRM114-Status: UNSURE ( 9.82 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Rosin , linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Peter Rosin The intention was to only select a higher pixel-clock rate than the requested, if a slight overclocking would result in a rate significantly closer to the requested rate than if the conservative lower pixel-clock rate is selected. The fixed patch has the logic the other way around and actually prefers the higher frequency. Fix that. Fixes: f6f7ad323461 ("drm/atmel-hlcdc: allow selecting a higher pixel-clock than requested") Reported-by: Claudiu Beznea Tested-by: Claudiu Beznea Signed-off-by: Peter Rosin --- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c index 721fa88bf71d..10985134ce0b 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -121,8 +121,8 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c) int div_low = prate / mode_rate; if (div_low >= 2 && - ((prate / div_low - mode_rate) < - 10 * (mode_rate - prate / div))) + (10 * (prate / div_low - mode_rate) < + (mode_rate - prate / div))) /* * At least 10 times better when using a higher * frequency than requested, instead of a lower. -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 9F483C2D0C9 for ; 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d="scan'208";a="61647016" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 Dec 2019 08:05:30 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Fri, 13 Dec 2019 08:05:30 -0700 Received: from m18063-ThinkPad-T460p.microchip.com (10.10.85.251) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1713.5 via Frontend Transport; Fri, 13 Dec 2019 08:05:25 -0700 From: Claudiu Beznea To: , , , , , , , Subject: [PATCH v2 5/6] drm: atmel-hlcdc: prefer a lower pixel-clock than requested Date: Fri, 13 Dec 2019 17:04:55 +0200 Message-ID: <1576249496-4849-6-git-send-email-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576249496-4849-1-git-send-email-claudiu.beznea@microchip.com> References: <1576249496-4849-1-git-send-email-claudiu.beznea@microchip.com> MIME-Version: 1.0 X-Mailman-Approved-At: Sat, 14 Dec 2019 14:42:54 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Rosin , linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Peter Rosin The intention was to only select a higher pixel-clock rate than the requested, if a slight overclocking would result in a rate significantly closer to the requested rate than if the conservative lower pixel-clock rate is selected. The fixed patch has the logic the other way around and actually prefers the higher frequency. Fix that. Fixes: f6f7ad323461 ("drm/atmel-hlcdc: allow selecting a higher pixel-clock than requested") Reported-by: Claudiu Beznea Tested-by: Claudiu Beznea Signed-off-by: Peter Rosin --- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c index 721fa88bf71d..10985134ce0b 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -121,8 +121,8 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c) int div_low = prate / mode_rate; if (div_low >= 2 && - ((prate / div_low - mode_rate) < - 10 * (mode_rate - prate / div))) + (10 * (prate / div_low - mode_rate) < + (mode_rate - prate / div))) /* * At least 10 times better when using a higher * frequency than requested, instead of a lower. -- 2.7.4 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel