From patchwork Thu Oct 15 01:36:38 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 7399581 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 239E4BEEA4 for ; Thu, 15 Oct 2015 01:38:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 463E320788 for ; Thu, 15 Oct 2015 01:38:48 +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 629542076D for ; Thu, 15 Oct 2015 01:38:47 +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 1ZmXVG-0005nA-Jr; Thu, 15 Oct 2015 01:38:46 +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 1ZmXUV-0004JW-NS; Thu, 15 Oct 2015 01:38:01 +0000 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.234]) by lucky1.263xmail.com (Postfix) with SMTP id DE3025BB60; Thu, 15 Oct 2015 09:37:41 +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 AB79941A; Thu, 15 Oct 2015 09:37:39 +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: <994c7e3d9d9bf35ba1de433a2a5b9109> 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 3097IGMM2V; Thu, 15 Oct 2015 09:37:41 +0800 (CST) From: Shawn Lin To: Vinod Koul , Heiko Stuebner , Jaroslav Kysela , Takashi Iwai , Mark Brown Subject: [PATCH v6 09/10] snd: dmaengine-pcm: add snd_dmaengine_pcm_get_caps interface Date: Thu, 15 Oct 2015 09:36:38 +0800 Message-Id: <1444872998-2548-1-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1444872865-2169-1-git-send-email-shawn.lin@rock-chips.com> References: <1444872865-2169-1-git-send-email-shawn.lin@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151014_183800_669680_B936460D X-CRM114-Status: UNSURE ( 6.86 ) 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 , Lars-Peter Clausen , alsa-devel@alsa-project.org, Boojin Kim , Shawn Lin , Doug Anderson , linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, Olof Johansson , linux-rockchip@lists.infradead.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, T_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 snd_dmaengine_pcm_get_caps for I2S devices to query dma controller's caps if they need it to make special limitation due to specific dma controller design Signed-off-by: Shawn Lin --- Changes in v6: - remove get quirks and add get slave caps Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None Changes in v1: None sound/soc/soc-generic-dmaengine-pcm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 6fd1906..225c933 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -466,4 +466,28 @@ void snd_dmaengine_pcm_unregister(struct device *dev) } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_unregister); + +/** + * snd_dmaengine_pcm_get_caps - Get slave dma caps based PCM device + * @dev: Parent device the PCM was register with + */ +int snd_dmaengine_pcm_get_caps(struct device *dev, struct dma_slave_caps *caps) +{ + struct snd_soc_platform *platform; + struct dmaengine_pcm *pcm; + int ret = -ENODEV; + + platform = snd_soc_lookup_platform(dev); + if (!platform) + return ret; + + pcm = soc_platform_to_pcm(platform); + + if (pcm->chan) + ret = dma_get_slave_caps(pcm->chan[0], caps); + + return ret; +} +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_get_caps); + MODULE_LICENSE("GPL");