Browse Source

ASoC: pcm: Add pcm operation for pcm ioctl.

Provide an ioctl marshaller for ASoC platform drivers.
This will use the default ALSA handler if no platform
handler exists.

This is also required for DPCM BE PCMs as snd_pcm_info()
will call the ioctl as part of stream startup.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Liam Girdwood 13 years ago
parent
commit
be3f3f2ce6
1 changed files with 13 additions and 0 deletions
  1. 13 0
      sound/soc/soc-pcm.c

+ 13 - 0
sound/soc/soc-pcm.c

@@ -1647,6 +1647,17 @@ out:
 	return ret;
 }
 
+static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
+		     unsigned int cmd, void *arg)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_platform *platform = rtd->platform;
+
+	if (platform->driver->ops->ioctl)
+		return platform->driver->ops->ioctl(substream, cmd, arg);
+	return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_pcm_substream *substream =
@@ -2051,6 +2062,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
 		rtd->ops.hw_free	= dpcm_fe_dai_hw_free;
 		rtd->ops.close		= dpcm_fe_dai_close;
 		rtd->ops.pointer	= soc_pcm_pointer;
+		rtd->ops.ioctl		= soc_pcm_ioctl;
 	} else {
 		rtd->ops.open		= soc_pcm_open;
 		rtd->ops.hw_params	= soc_pcm_hw_params;
@@ -2059,6 +2071,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
 		rtd->ops.hw_free	= soc_pcm_hw_free;
 		rtd->ops.close		= soc_pcm_close;
 		rtd->ops.pointer	= soc_pcm_pointer;
+		rtd->ops.ioctl		= soc_pcm_ioctl;
 	}
 
 	if (platform->driver->ops) {