linux-kernel - [PATCH v5 09/10] snd: dmaengine-pcm: add snd_dmaengine_pcm_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 14 Sep 2015 07:49:32 +0800
From:	Shawn Lin <shawn.lin@...k-chips.com>
To:	Vinod Koul <vinod.koul@...el.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>, Mark Brown <broonie@...nel.org>
Cc:	Doug Anderson <dianders@...omium.org>,
	Olof Johansson <olofj@...om.net>,
	Sonny Rao <sonnyrao@...omium.org>,
	Addy Ke <addy.ke@...k-chips.com>, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, alsa-devel@...a-project.org,
	linux-spi@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>
Subject: [PATCH v5 09/10] snd: dmaengine-pcm: add snd_dmaengine_pcm_get_quirks interface

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 <shawn.lin@...k-chips.com>
---

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


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/