From patchwork Mon Oct 14 12:50:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Reding X-Patchwork-Id: 1176328 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="a6UPelnc"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46sJMf46nxz9sPT for ; Mon, 14 Oct 2019 23:51:10 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731415AbfJNMvE (ORCPT ); Mon, 14 Oct 2019 08:51:04 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:36195 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731029AbfJNMvE (ORCPT ); Mon, 14 Oct 2019 08:51:04 -0400 Received: by mail-wm1-f68.google.com with SMTP id m18so16648310wmc.1 for ; Mon, 14 Oct 2019 05:51:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=G8Ip/N74ctxJJIwGKeqriyFtdTULY1VY4q99IhD7qRM=; b=a6UPelncewmDN9UTVzqDbpUmI9eu9bTh6bxy9nRXld4JwG3EVLAm3e06C3HA577Sv1 QHP5J78GPFogvs6g3WMyHnKzY9Oqw94QVzNn1g9OrBs3Oj07LAkxqz5I8WNR5ZZi8MHR iLsysrgZLneZNwqixOsZUzJaKfimn+4au/Ai31U/WASpDeF9WweuGelfgEN4OvxznALR lTR5/bvHA824s1VLAWOzUWEvLosCs/f8LeECsUD2aQTrR+61yvSqi+Q3OyQw4nYhtybO Act5WdkDXd+GYETwDO+CWFi2NiopIvXTHNJKkZstRgJQulH4eHae5YnT717G65LEiWLH Itpw== 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=G8Ip/N74ctxJJIwGKeqriyFtdTULY1VY4q99IhD7qRM=; b=gbsoaZ/9Q6D21CnJCnAB7mSvTz5QfaBlr9CJl3TnhtT5CKfChvMKDqjuNvX9EthQCL 80ziFNlhCIRy8Jfe1V2FkNF9VDvzE40beCBtrCghqLe57GMB+GuX+ZQmZ6Bwn3dr+9Tt f2Ttk0FnF7RJ+ut5q1K7GGjzEC7qAt0UoTvMMfzrJgTlw3YmcbO71SKlcsdAX0dj7RTW 2PuJpLJG0h7cYdxRwxryxxR/cZPWK0HeX6efQ2krTXkJMZPiewal9suLLp6I1msM4WcO 2nqrO4USwwPcOVx6LsMVFeoty0vTkBlOUHCcxESv/e7BzdT+uDJv2Sd2GTTGHI/ufc8y R6rA== X-Gm-Message-State: APjAAAWTh0CTWKtrQrYyR6ZvNiplO6p5BzFRGvhZzlp3W7yWVrOKQPnq BjCwqK5YewskZ88mqtpLcXY= X-Google-Smtp-Source: APXvYqwy8ad1by41Gb786EPOSxMUzFJ4fHUkh7WWE+RcLVZpFH7w5ydP5oTR7CWjvEhiKXk3grAFmQ== X-Received: by 2002:a1c:ac02:: with SMTP id v2mr11162902wme.85.1571057462130; Mon, 14 Oct 2019 05:51:02 -0700 (PDT) Received: from localhost (p2E5BE2CE.dip0.t-ipconnect.de. [46.91.226.206]) by smtp.gmail.com with ESMTPSA id l7sm18312749wrv.77.2019.10.14.05.51.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Oct 2019 05:51:01 -0700 (PDT) From: Thierry Reding To: Thierry Reding Cc: dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org Subject: [PATCH 05/14] drm/tegra: Inherit device DMA parameters from host1x Date: Mon, 14 Oct 2019 14:50:40 +0200 Message-Id: <20191014125049.425101-6-thierry.reding@gmail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191014125049.425101-1-thierry.reding@gmail.com> References: <20191014125049.425101-1-thierry.reding@gmail.com> MIME-Version: 1.0 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org From: Thierry Reding The display controllers and VIC don't have any limitations on the DMA segment size. Inherit the DMA parameters from the parent device, which also doesn't have any such limitations. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 9 +++++++++ drivers/gpu/drm/tegra/vic.c | 9 +++++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index fbf57bc3cdab..f7f7984bb749 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -2074,6 +2074,12 @@ static int tegra_dc_init(struct host1x_client *client) goto cleanup; } + /* + * Inherit the DMA parameters (such as maximum segment size) from the + * parent device. + */ + client->dev->dma_parms = client->parent->dma_parms; + return 0; cleanup: @@ -2097,6 +2103,9 @@ static int tegra_dc_exit(struct host1x_client *client) if (!tegra_dc_has_window_groups(dc)) return 0; + /* avoid a dangling pointer just in case this disappears */ + client->dev->dma_parms = NULL; + devm_free_irq(dc->dev, dc->irq, dc); err = tegra_dc_rgb_exit(dc); diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c index c97a61c877af..8d98b0cfc47b 100644 --- a/drivers/gpu/drm/tegra/vic.c +++ b/drivers/gpu/drm/tegra/vic.c @@ -214,6 +214,12 @@ static int vic_init(struct host1x_client *client) if (err < 0) goto free_syncpt; + /* + * Inherit the DMA parameters (such as maximum segment size) from the + * parent device. + */ + client->dev->dma_parms = client->parent->dma_parms; + return 0; free_syncpt: @@ -236,6 +242,9 @@ static int vic_exit(struct host1x_client *client) struct vic *vic = to_vic(drm); int err; + /* avoid a dangling pointer just in case this disappears */ + client->dev->dma_parms = NULL; + err = tegra_drm_unregister_client(tegra, drm); if (err < 0) return err;