From patchwork Sat Aug 8 16:10:32 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 6975231 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 92CCAC05AC for ; Sat, 8 Aug 2015 16:11:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B087C205FE for ; Sat, 8 Aug 2015 16:11:24 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id DB05C20544 for ; Sat, 8 Aug 2015 16:11:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1B0296E073; Sat, 8 Aug 2015 09:11:23 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from pandora.arm.linux.org.uk (pandora.arm.linux.org.uk [78.32.30.218]) by gabe.freedesktop.org (Postfix) with ESMTPS id 050D36E073 for ; Sat, 8 Aug 2015 09:11:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=pandora-2014; h=Date:Sender:Message-Id:Content-Type:Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References:In-Reply-To; bh=t9+Lea/jFHU7u4v6H26x3AeI3QoXcZTYEtAWxe1SREs=; b=SmKs38j1ifxGX84M6BopVNRXNo8BmbgA11LEgQo+Xbfb3wH8l8xbZHBmDwpe7k/L4XBEIGOaWpqj+hAuRvMEcTozqNytp8A7EF+zTo/eNorHRKzecDVmBY49jplRSQ9LaZXAEtwIxCKUDK/OFK1BUxobVGNX2eAVMfbKrAbS+Uo=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:35646 helo=rmk-PC.arm.linux.org.uk) by pandora.arm.linux.org.uk with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1ZO6hk-0006TE-Kp; Sat, 08 Aug 2015 17:10:40 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1ZO6hc-0003NW-55; Sat, 08 Aug 2015 17:10:32 +0100 In-Reply-To: <20150808160936.GN7557@n2100.arm.linux.org.uk> References: <20150808160936.GN7557@n2100.arm.linux.org.uk> From: Russell King To: linux-rockchip@lists.infradead.org, alsa-devel@alsa-project.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 6/9] drm: bridge/dw_hdmi: adjust pixel clock values in N calculation MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Sat, 08 Aug 2015 17:10:32 +0100 Cc: Fabio Estevam , Jaroslav Kysela , Mark Brown , Yakir Yang , Andy Yan X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham 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 Adjust the pixel clock values in the N calculation to match the more accurate clock values we're given by the DRM subsystem, which are the kHz pixel rate, with any fractional kHz rounded down in the case of the non-240, non-480 line modes, or rounded up for the others. So, 25.20 / 1.001 => 25175 27.00 * 1.001 => 27027 74.25 / 1.001 => 74176 148.50 / 1.001 => 148352 Signed-off-by: Russell King Reviewed-by: Douglas Anderson --- drivers/gpu/drm/bridge/dw_hdmi.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index f0e6059f818a..5576cd7d7abb 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -230,11 +230,11 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, switch (freq) { case 32000: - if (pixel_clk == 25170000) + if (pixel_clk == 25175000) n = (ratio == 150) ? 9152 : 4576; - else if (pixel_clk == 27020000) + else if (pixel_clk == 27027000) n = (ratio == 150) ? 8192 : 4096; - else if (pixel_clk == 74170000 || pixel_clk == 148350000) + else if (pixel_clk == 74176000 || pixel_clk == 148352000) n = 11648; else n = 4096; @@ -242,11 +242,11 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, break; case 44100: - if (pixel_clk == 25170000) + if (pixel_clk == 25175000) n = 7007; - else if (pixel_clk == 74170000) + else if (pixel_clk == 74176000) n = 17836; - else if (pixel_clk == 148350000) + else if (pixel_clk == 148352000) n = (ratio == 150) ? 17836 : 8918; else n = 6272; @@ -254,13 +254,13 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, break; case 48000: - if (pixel_clk == 25170000) + if (pixel_clk == 25175000) n = (ratio == 150) ? 9152 : 6864; - else if (pixel_clk == 27020000) + else if (pixel_clk == 27027000) n = (ratio == 150) ? 8192 : 6144; - else if (pixel_clk == 74170000) + else if (pixel_clk == 74176000) n = 11648; - else if (pixel_clk == 148350000) + else if (pixel_clk == 148352000) n = (ratio == 150) ? 11648 : 5824; else n = 6144;