From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753961AbbIMXv5 (ORCPT ); Sun, 13 Sep 2015 19:51:57 -0400 Received: from lucky1.263xmail.com ([211.157.147.132]:52099 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752794AbbIMXvz (ORCPT ); Sun, 13 Sep 2015 19:51:55 -0400 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 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: <5973cfefcb5e6a89d555279efc556cb6> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 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 v5 09/10] snd: dmaengine-pcm: add snd_dmaengine_pcm_get_quirks interface Date: Mon, 14 Sep 2015 07:49:32 +0800 Message-Id: <1442188172-6140-1-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1442187923-5736-1-git-send-email-shawn.lin@rock-chips.com> References: <1442187923-5736-1-git-send-email-shawn.lin@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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..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"); -- 2.3.7