diff options
Diffstat (limited to 'sound/soc/fsl/imx-sii902x.c')
| -rw-r--r-- | sound/soc/fsl/imx-sii902x.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/sound/soc/fsl/imx-sii902x.c b/sound/soc/fsl/imx-sii902x.c index 61154776b0fc..8dfcf4cfde64 100644 --- a/sound/soc/fsl/imx-sii902x.c +++ b/sound/soc/fsl/imx-sii902x.c @@ -22,6 +22,7 @@ #include <sound/pcm_params.h> #include <sound/soc-dapm.h> #include <linux/pinctrl/consumer.h> +#include "fsl_sai.h" #define SUPPORT_RATE_NUM 10 @@ -29,6 +30,7 @@ struct imx_sii902x_data { struct snd_soc_dai_link dai; struct snd_soc_card card; struct i2c_client *sii902x; + bool is_stream_opened[2]; }; static int imx_sii902x_startup(struct snd_pcm_substream *substream) @@ -36,8 +38,21 @@ static int imx_sii902x_startup(struct snd_pcm_substream *substream) struct snd_pcm_runtime *runtime = substream->runtime; static struct snd_pcm_hw_constraint_list constraint_rates; static u32 support_rates[SUPPORT_RATE_NUM]; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_card *card = rtd->card; + struct imx_sii902x_data *data = snd_soc_card_get_drvdata(card); + struct fsl_sai *sai = dev_get_drvdata(cpu_dai->dev); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; int ret; + data->is_stream_opened[tx] = true; + if (data->is_stream_opened[tx] != sai->is_stream_opened[tx] || + data->is_stream_opened[!tx] != sai->is_stream_opened[!tx]) { + data->is_stream_opened[tx] = false; + return -EBUSY; + } + support_rates[0] = 32000; support_rates[1] = 48000; constraint_rates.list = support_rates; @@ -136,8 +151,19 @@ static int imx_sii902x_hw_free(struct snd_pcm_substream *substream) return 0; } +static void imx_sii902x_shutdown(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct imx_sii902x_data *data = snd_soc_card_get_drvdata(card); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + + data->is_stream_opened[tx] = false; +} + static struct snd_soc_ops imx_sii902x_ops = { .startup = imx_sii902x_startup, + .shutdown = imx_sii902x_shutdown, .hw_params = imx_sii902x_hw_params, .hw_free = imx_sii902x_hw_free, }; |