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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 621D3C282C3 for ; Thu, 24 Jan 2019 19:59:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3150521726 for ; Thu, 24 Jan 2019 19:59:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amarulasolutions.com header.i=@amarulasolutions.com header.b="ebTKTuOV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731955AbfAXT7g (ORCPT ); Thu, 24 Jan 2019 14:59:36 -0500 Received: from mail-pl1-f196.google.com ([209.85.214.196]:43126 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729731AbfAXT7e (ORCPT ); Thu, 24 Jan 2019 14:59:34 -0500 Received: by mail-pl1-f196.google.com with SMTP id gn14so3367763plb.10 for ; Thu, 24 Jan 2019 11:59:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=a8vOl3skF2N3dkaRRYLofdwZfQDV/6WD5CsnhZdLWdk=; b=ebTKTuOVkL11ASo0UBwv/Mx+SzrHJ5oxFw3eMUKqwdsqzM4HdFzzv/TA4aIK7Y3Ftw TcXzrmY5ETcR8XSeYVhErcnmF+JPo+UL0E/derqnYwa+gopPyOAQPmygRzw2jvMdg71o V12iSQzJ2QeiT7Lxi5VBYJwZbP/np+wp/leXo= 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=a8vOl3skF2N3dkaRRYLofdwZfQDV/6WD5CsnhZdLWdk=; b=kLrar01G7s8oQqpu5fnKi3B2mJqtMgznamwwkd/SCpidkYRUxBy2thQqrhXOIWyji8 N+U1XbJ9NX8DNYzdQXydVAjF+PGKTZNkz2OfIEdhug70PwltjknmTbcW+D83poD7yw3Y 06QgWTTPb9/f5LGjyZ1wvBCNZLQVXN8L8TnSBRWz29w5ZU3LVZTjH99RI5YCMeoGFOum VspPsQST1/kFiPjc14lwWJr9C8F2JX2bEpthKjvKJNidVzR4ExmlB+8uJXHk4tCipAqG s1unPRlAR+BtkmCAbE8K2I4PRZ8ekRQFSbSEiMvtOfrc4030gXsbVH20YklfYtgrSx9U DHnQ== X-Gm-Message-State: AJcUukcveLD1y0L9+UXQ6lEXxVmmuK8c4tSDXuLb3CIr2J1uldiFTfGi Pzr1n61lCKz6x+jEWWIEarYfwA== X-Google-Smtp-Source: ALg8bN600OaZSBVU1MphHnvnL6Q/ASOz8fdtUlZH15Pf1qk+U2hWLSI1BdNwhM2H3XNJJT28S7ntjA== X-Received: by 2002:a17:902:848d:: with SMTP id c13mr7959131plo.257.1548359973705; Thu, 24 Jan 2019 11:59:33 -0800 (PST) Received: from localhost.localdomain ([115.97.179.75]) by smtp.gmail.com with ESMTPSA id x11sm61637003pfe.72.2019.01.24.11.59.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 24 Jan 2019 11:59:33 -0800 (PST) From: Jagan Teki To: Maxime Ripard , David Airlie , Daniel Vetter , Chen-Yu Tsai , Michael Turquette , Rob Herring , Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Michael Trimarchi , linux-amarula@amarulasolutions.com, linux-sunxi@googlegroups.com, Jagan Teki Subject: [PATCH v6 03/22] drm/sun4i: sun6i_mipi_dsi: Setup burst mode timings Date: Fri, 25 Jan 2019 01:28:41 +0530 Message-Id: <20190124195900.22620-4-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.18.0.321.gffc6fa0e3 In-Reply-To: <20190124195900.22620-1-jagan@amarulasolutions.com> References: <20190124195900.22620-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Burst mode display timings are different from conventional video mode, for burst mode most of the timings hsa, hbp, hfp, vblk are 0 and hblk is computed as (mode->hdisplay * Bpp) This patch add burst mode timings and directly goto alloc buffer. Reference code taken from BSP (from linux-sunxi/ drivers/video/sunxi/disp2/disp/de/lowlevel_sun50iw1/de_dsi.c) dsi_hsa = 0; dsi_hbp = 0; dsi_hact = x*dsi_pixel_bits[format]/8; dsi_hblk = dsi_hact; dsi_hfp = 0; dsi_vblk = 0; Signed-off-by: Jagan Teki --- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c index 813d5523f1c7..0f02bcc997a5 100644 --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c @@ -477,6 +477,12 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi, /* Do all timing calculations up front to allocate buffer space */ + if (device->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) { + hbp = hfp = hsa = vblk = 0; + hblk = (mode->hdisplay * Bpp); + goto alloc_buf; + } + /* * A sync period is composed of a blanking packet (4 bytes + * payload + 2 bytes) and a sync event packet (4 bytes). Its @@ -515,6 +521,7 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi, */ vblk = 0; +alloc_buf: /* How many bytes do we need to send all payloads? */ bytes = max_t(size_t, max(max(hfp, hblk), max(hsa, hbp)), vblk); buffer = kmalloc(bytes, GFP_KERNEL); -- 2.18.0.321.gffc6fa0e3