From patchwork Sun Sep 6 01:13:16 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 7130291 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 999CD9F380 for ; Sun, 6 Sep 2015 01:15:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B6C422056C for ; Sun, 6 Sep 2015 01:15:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C687520573 for ; Sun, 6 Sep 2015 01:15:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752561AbbIFBPk (ORCPT ); Sat, 5 Sep 2015 21:15:40 -0400 Received: from lucky1.263xmail.com ([211.157.147.130]:48504 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752131AbbIFBPC (ORCPT ); Sat, 5 Sep 2015 21:15:02 -0400 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.226]) by lucky1.263xmail.com (Postfix) with SMTP id F11241E5644; Sun, 6 Sep 2015 09:14:58 +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 CDB181543E9; Sun, 6 Sep 2015 09:14:56 +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: <12790d6c5427c888799175100ec584b1> 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 10568EFKX80; Sun, 06 Sep 2015 09:14:58 +0800 (CST) From: Shawn Lin To: Vinod Koul , Heiko Stuebner , Jaroslav Kysela , Takashi Iwai , Mark Brown Cc: Doug Anderson , Olof Johansson , Sonny Rao , Addy Ke , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, Shawn Lin Subject: [PATCH v4 09/10] snd: dmaengine-pcm: add snd_dmaengine_pcm_get_quirks interface Date: Sun, 6 Sep 2015 09:13:16 +0800 Message-Id: <1441501996-14075-1-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> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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_quirks for I2S devices to query dma controller's 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 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..42136005 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_quirks - Get dmaengine quirks based PCM device + * @dev: Parent device the PCM was register with + */ +int snd_dmaengine_pcm_get_quirks(struct device *dev) +{ + 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 = dmaengine_get_quirks(pcm->chan[0]); + + return ret; +} +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_get_quirks); + MODULE_LICENSE("GPL");