From patchwork Tue Feb 3 15:13:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yakir Yang X-Patchwork-Id: 5769341 Return-Path: X-Original-To: patchwork-linux-arm@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 B1AA79F302 for ; Tue, 3 Feb 2015 15:16:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E8608200E3 for ; Tue, 3 Feb 2015 15:16:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1725920251 for ; Tue, 3 Feb 2015 15:16:16 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YIfBK-000418-UH; Tue, 03 Feb 2015 15:14:26 +0000 Received: from regular1.263xmail.com ([211.150.99.135]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YIfBF-0003nK-Uf; Tue, 03 Feb 2015 15:14:24 +0000 Received: from ykk?rock-chips.com (unknown [192.168.167.105]) by regular1.263xmail.com (Postfix) with SMTP id 365871964E; Tue, 3 Feb 2015 23:13:50 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 4FB301F081; Tue, 3 Feb 2015 23:13:17 +0800 (CST) X-RL-SENDER: ykk@rock-chips.com X-FST-TO: airlied@linux.ie X-SENDER-IP: 192.253.240.203 X-LOGIN-NAME: ykk@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: ykk@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [192.253.240.203]) by smtp.263.net (Postfix) whith ESMTP id 146283TI6G3; Tue, 03 Feb 2015 23:13:42 +0800 (CST) From: Yakir Yang To: David Airlie , Russell King , Philipp Zabel Subject: [PATCH v3 06/15] drm: bridge/dw_hdmi: adjust n/cts setting order Date: Tue, 3 Feb 2015 10:13:07 -0500 Message-Id: <1422976387-30165-1-git-send-email-ykk@rock-chips.com> X-Mailer: git-send-email 2.1.2 In-Reply-To: <1422975418-13302-1-git-send-email-ykk@rock-chips.com> References: <1422975418-13302-1-git-send-email-ykk@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150203_071424_226291_132F74E7 X-CRM114-Status: UNSURE ( 7.33 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 1.7 (+) Cc: Mark Rutland , alsa-devel@alsa-project.org, Heiko Stuebner , djkurtz@chromium.org, dianders@chromium.org, Yakir Yang , mmind00@googlemail.com, Pawel Moll , linux-rockchip@lists.infradead.org, Sean Cross , devicetree@vger.kernel.org, Arnd Bergmann , Ian Campbell , Jyri Sarha , Ben Zhang , Rob Herring , dri-devel@lists.freedesktop.org, marcheu@chromium.org, linux-arm-kernel@lists.infradead.org, Mark Yao , Fabio Estevam , linux-kernel@vger.kernel.org, Rob Clark , Daniel Vetter , Kumar Gala , Shawn Guo X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY, URIBL_BLACK 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 This patch changes the order to: - write CTS3 CTS_manual = 0 - write CTS3 N_shift = 0 - write CTS3 CTS value - write CTS2 CTS value - write CTS1 CTS value - write N3 N value - write N2 N value - write N1 N value Signed-off-by: Yakir Yang --- Changes in v3: - Only adjust the n/cts setting order Changes in v2: None drivers/gpu/drm/bridge/dw_hdmi.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index 262163f..81309df 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -199,20 +199,20 @@ static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg, static void hdmi_set_clock_regenerator(struct dw_hdmi *hdmi, unsigned int n, unsigned int cts) { - hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1); - hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2); - hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3); + /* Must be set/cleared first */ + hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); /* nshift factor = 0 */ hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3); - /* Must be set/cleared first */ - hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); - - hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1); - hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2); hdmi_writeb(hdmi, ((cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK) | HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); + hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2); + hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1); + + hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3); + hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2); + hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1); } static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk,