From patchwork Sat Nov 3 10:08:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 10666663 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C6DF813B5 for ; Sat, 3 Nov 2018 14:23:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B5A79287C2 for ; Sat, 3 Nov 2018 14:23:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A9424288BC; Sat, 3 Nov 2018 14:23:48 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 665EF287C2 for ; Sat, 3 Nov 2018 14:23:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 16B576EF84; Sat, 3 Nov 2018 14:23:29 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pl1-x642.google.com (mail-pl1-x642.google.com [IPv6:2607:f8b0:4864:20::642]) by gabe.freedesktop.org (Postfix) with ESMTPS id 19B116E67E for ; Sat, 3 Nov 2018 10:09:30 +0000 (UTC) Received: by mail-pl1-x642.google.com with SMTP id c13-v6so2121069plz.13 for ; Sat, 03 Nov 2018 03:09:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ItiKdY/aqQ72CaiAvq/zBxi6LN6Pf1wyAwPGh/IMHHQ=; b=L5eEpjKhDNeyCw6gGOjrb0j7I1Swn1XnUACiJuo012aJ44vnKk/BT6iSmCWLY8BpV3 7UkC57LRM9oFouZzqZA/sSz99Y+ecJPxV9N1406ezqhKMigqHhehVKICjUZu69OBtEjq EnceNV3iRGI+EInP3ZetvV2BzPI3+XaczEqa+vVR71udwCjlc3iG+JeQ7kcyQb4x/2/3 25QAL9y42p3KMDQO9He508UYe11cpL9FVnVzauQKG09LLRL8WFiX8Dz971Oo0RkwhnEt v4Q0rURrXSuWskQdzkrrJlDAdcymqsRZTKE10WEHzDIGPZfPiCEatc/uxkZU1McWbA4B h77A== X-Gm-Message-State: AGRZ1gJCGnjpFeVL6UJX2s8dTd/0WQmBIRKSLDwxaeYi78BrWAJeb6io I8CUiaOsjzru1StqU3CfWISXlA== X-Google-Smtp-Source: AJdET5dxiNozwBzE8xGf4Wfx+GgIdBkafQgF7rhrQSqStOEiVgqWI00de4qC41PL68yFC/tWW3INXA== X-Received: by 2002:a17:902:f097:: with SMTP id go23mr14566114plb.328.1541239769647; Sat, 03 Nov 2018 03:09:29 -0700 (PDT) Received: from localhost.localdomain ([2405:204:6094:3f7a:ed0a:fb74:1220:defe]) by smtp.gmail.com with ESMTPSA id z79-v6sm28466823pfl.33.2018.11.03.03.09.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 03 Nov 2018 03:09:29 -0700 (PDT) From: Jagan Teki To: Maarten Lankhorst , Maxime Ripard , Sean Paul , David Airlie , Rob Herring , Chen-Yu Tsai , Icenowy Zheng , Jernej Skrabec , Vasily Khoruzhick , Thierry Reding , Mark Rutland , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Michael Trimarchi , TL Lim , linux-sunxi@googlegroups.com Subject: [PATCH 01/10] drm/sun4i: sun6i_mipi_dsi: Compute burst mode loop N1 instruction delay Date: Sat, 3 Nov 2018 15:38:51 +0530 Message-Id: <20181103100900.30313-2-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.18.0.321.gffc6fa0e3 In-Reply-To: <20181103100900.30313-1-jagan@amarulasolutions.com> References: <20181103100900.30313-1-jagan@amarulasolutions.com> MIME-Version: 1.0 X-Mailman-Approved-At: Sat, 03 Nov 2018 14:23:26 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jagan Teki Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Loop N1 instruction delay for burst mode lcd panel are computed as per BSP code. Reference code is available in BSP (in drivers/video/sunxi/disp2/disp/de/lowlevel_sun50iw1/de_dsi.c) dsi_dev[sel]->dsi_inst_loop_num.bits.loop_n1= (panel->lcd_ht-panel->lcd_x)*(150)/(panel->lcd_dclk_freq*8) - 50; => (((mode->htotal - mode->hdisplay) * 150) / ((mode->clock / 1000) * 8)) - 50; So use the similar computation for loop N1 delay. Signed-off-by: Jagan Teki --- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c index 86430efd9054..da152c21ec62 100644 --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c @@ -394,7 +394,14 @@ static void sun6i_dsi_setup_burst(struct sun6i_dsi *dsi, static void sun6i_dsi_setup_inst_loop(struct sun6i_dsi *dsi, struct drm_display_mode *mode) { - u16 delay = 50 - 1; + struct mipi_dsi_device *device = dsi->device; + u16 delay; + + if (device->mode_flags == MIPI_DSI_MODE_VIDEO_BURST) + delay = (((mode->htotal - mode->hdisplay) * 150) / + ((mode->clock / 1000) * 8)) - 50; + else + delay = 50 - 1; regmap_write(dsi->regs, SUN6I_DSI_INST_LOOP_NUM_REG(0), SUN6I_DSI_INST_LOOP_NUM_N0(50 - 1) |