From patchwork Mon Jun 29 23:52:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 11633379 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 59F5D13B6 for ; Tue, 30 Jun 2020 07:35:51 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 38505206CB for ; Tue, 30 Jun 2020 07:35:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=crapouillou.net header.i=@crapouillou.net header.b="gCSAXXOz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 38505206CB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=crapouillou.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 83C2D89D61; Tue, 30 Jun 2020 07:34:59 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from crapouillou.net (outils.crapouillou.net [89.234.176.41]) by gabe.freedesktop.org (Postfix) with ESMTPS id 113D389D4B for ; Mon, 29 Jun 2020 23:52:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1593474745; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NzZtxTYFppOxJnlICRZ7phC+Q8/+aCXEQXT9OW1NRwk=; b=gCSAXXOz9YfYM8EBmvMKB6y2ngfnt0p1yuQOOK0p9czTJ18w+dNdekcOleASnuhCec9kwF mwY9vBd8Cgl/DvhY9wlm2yz/4LGOOe/hGGv3vweWIEs/8Hrj1PBqYyvThi3gfq1G6/4v+O xtYE/eeQxWm4RpdMxYcxNy3G3weJ4Cs= From: Paul Cercueil To: David Airlie , Daniel Vetter , Rob Herring Subject: [PATCH v2 06/10] drm/ingenic: Set DMA descriptor chain address in probe Date: Tue, 30 Jun 2020 01:52:06 +0200 Message-Id: <20200629235210.441709-6-paul@crapouillou.net> In-Reply-To: <20200629235210.441709-1-paul@crapouillou.net> References: <20200629235210.441709-1-paul@crapouillou.net> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 30 Jun 2020 07:34:54 +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: devicetree@vger.kernel.org, linux-mips@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Paul Cercueil , od@zcrc.me Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The address of the DMA descriptor never changes. It can therefore be set in the probe function. Signed-off-by: Paul Cercueil --- Notes: v2: No change drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index 924c8daf071a..f7b0c5dc8cd8 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -358,8 +358,6 @@ static void ingenic_drm_crtc_atomic_flush(struct drm_crtc *crtc, ingenic_drm_crtc_update_ctrl(priv, finfo); clk_set_rate(priv->pix_clk, state->adjusted_mode.clock * 1000); - - regmap_write(priv->map, JZ_REG_LCD_DA0, priv->dma_hwdesc->next); } if (event) { @@ -757,6 +755,9 @@ static int ingenic_drm_probe(struct platform_device *pdev) } } + /* Set address of our DMA descriptor chain */ + regmap_write(priv->map, JZ_REG_LCD_DA0, priv->dma_hwdesc_phys); + ret = drm_dev_register(drm, 0); if (ret) { dev_err(dev, "Failed to register DRM driver\n");