From patchwork Sun Sep 6 01:12:44 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 7130181 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DA58BBEEC1 for ; Sun, 6 Sep 2015 01:15:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 02A7B2089D for ; Sun, 6 Sep 2015 01:15:09 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 28B9D208A2 for ; Sun, 6 Sep 2015 01:15:08 +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 1ZYOXz-0005ct-KM; Sun, 06 Sep 2015 01:15:07 +0000 Received: from lucky1.263xmail.com ([211.157.147.132]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZYOXe-0004Y7-2K; Sun, 06 Sep 2015 01:14:47 +0000 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.84]) by lucky1.263xmail.com (Postfix) with SMTP id 709D6584A4; Sun, 6 Sep 2015 09:14:27 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 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 B93641EBBD; Sun, 6 Sep 2015 09:14:23 +0800 (CST) X-RL-SENDER: shawn.lin@rock-chips.com X-FST-TO: vinod.koul@intel.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: shawn.lin@rock-chips.com X-UNIQUE-TAG: <67d586a36956e1d26ff595e69977e715> X-ATTACHMENT-NUM: 0 X-SENDER: lintao@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 147890RANM7; Sun, 06 Sep 2015 09:14:25 +0800 (CST) From: Shawn Lin To: Vinod Koul , Heiko Stuebner , Jaroslav Kysela , Takashi Iwai , Mark Brown Subject: [PATCH v4 06/10] dmaengine: add API for getting dma controller's quirk Date: Sun, 6 Sep 2015 09:12:44 +0800 Message-Id: <1441501964-13952-1-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1441501881-13700-1-git-send-email-shawn.lin@rock-chips.com> References: <1441501881-13700-1-git-send-email-shawn.lin@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150905_181446_672253_B054F75E X-CRM114-Status: UNSURE ( 6.33 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.9 (-) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Addy Ke , alsa-devel@alsa-project.org, Olof Johansson , Shawn Lin , Doug Anderson , linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, dmaengine@vger.kernel.org, linux-spi@vger.kernel.org, Sonny Rao , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY 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 Add dmaengine_get_quirks API for peripheral devices to query quirks if they need it to make special workaround due to broken dma controller design. Signed-off-by: Shawn Lin --- Changes in v4: None Changes in v3: None Changes in v2: None Changes in v1: None include/linux/dmaengine.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index e2f5eb4..5174ca4 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -704,6 +704,7 @@ struct dma_device { int (*device_config)(struct dma_chan *chan, struct dma_slave_config *config); + int (*device_get_quirks)(struct dma_chan *chan); int (*device_pause)(struct dma_chan *chan); int (*device_resume)(struct dma_chan *chan); int (*device_terminate_all)(struct dma_chan *chan); @@ -723,6 +724,14 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, return -ENOSYS; } +static inline int dmaengine_get_quirks(struct dma_chan *chan) +{ + if (chan->device->device_get_quirks) + return chan->device->device_get_quirks(chan); + + return -ENOSYS; +} + static inline bool is_slave_direction(enum dma_transfer_direction direction) { return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM);