From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/sound/soc/stm/stm32_adfsdm.c | 152 +++++++++++++++++++++++++++-----------------------
1 files changed, 82 insertions(+), 70 deletions(-)
diff --git a/kernel/sound/soc/stm/stm32_adfsdm.c b/kernel/sound/soc/stm/stm32_adfsdm.c
index 24948b9..c403198 100644
--- a/kernel/sound/soc/stm/stm32_adfsdm.c
+++ b/kernel/sound/soc/stm/stm32_adfsdm.c
@@ -44,11 +44,8 @@
static const struct snd_pcm_hardware stm32_adfsdm_pcm_hw = {
.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
- SNDRV_PCM_INFO_PAUSE,
- .formats = SNDRV_PCM_FMTBIT_S32_LE,
-
- .rate_min = 8000,
- .rate_max = 32000,
+ SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_PAUSE,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
.channels_min = 1,
.channels_max = 1,
@@ -141,9 +138,11 @@
.capture = {
.channels_min = 1,
.channels_max = 1,
- .formats = SNDRV_PCM_FMTBIT_S32_LE,
- .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
- SNDRV_PCM_RATE_32000),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 8000,
+ .rate_max = 48000,
},
.ops = &stm32_adfsdm_dai_ops,
};
@@ -152,40 +151,69 @@
.name = "stm32_dfsdm_audio",
};
+static void stm32_memcpy_32to16(void *dest, const void *src, size_t n)
+{
+ unsigned int i = 0;
+ u16 *d = (u16 *)dest, *s = (u16 *)src;
+
+ s++;
+ for (i = n >> 1; i > 0; i--) {
+ *d++ = *s++;
+ s++;
+ }
+}
+
static int stm32_afsdm_pcm_cb(const void *data, size_t size, void *private)
{
struct stm32_adfsdm_priv *priv = private;
- struct snd_soc_pcm_runtime *rtd = priv->substream->private_data;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(priv->substream);
u8 *pcm_buff = priv->pcm_buff;
u8 *src_buff = (u8 *)data;
- unsigned int buff_size = snd_pcm_lib_buffer_bytes(priv->substream);
- unsigned int period_size = snd_pcm_lib_period_bytes(priv->substream);
unsigned int old_pos = priv->pos;
- unsigned int cur_size = size;
+ size_t buff_size = snd_pcm_lib_buffer_bytes(priv->substream);
+ size_t period_size = snd_pcm_lib_period_bytes(priv->substream);
+ size_t cur_size, src_size = size;
+ snd_pcm_format_t format = priv->substream->runtime->format;
+
+ if (format == SNDRV_PCM_FORMAT_S16_LE)
+ src_size >>= 1;
+ cur_size = src_size;
dev_dbg(rtd->dev, "%s: buff_add :%pK, pos = %d, size = %zu\n",
- __func__, &pcm_buff[priv->pos], priv->pos, size);
+ __func__, &pcm_buff[priv->pos], priv->pos, src_size);
- if ((priv->pos + size) > buff_size) {
- memcpy(&pcm_buff[priv->pos], src_buff, buff_size - priv->pos);
+ if ((priv->pos + src_size) > buff_size) {
+ if (format == SNDRV_PCM_FORMAT_S16_LE)
+ stm32_memcpy_32to16(&pcm_buff[priv->pos], src_buff,
+ buff_size - priv->pos);
+ else
+ memcpy(&pcm_buff[priv->pos], src_buff,
+ buff_size - priv->pos);
cur_size -= buff_size - priv->pos;
priv->pos = 0;
}
- memcpy(&pcm_buff[priv->pos], &src_buff[size - cur_size], cur_size);
+ if (format == SNDRV_PCM_FORMAT_S16_LE)
+ stm32_memcpy_32to16(&pcm_buff[priv->pos],
+ &src_buff[src_size - cur_size], cur_size);
+ else
+ memcpy(&pcm_buff[priv->pos], &src_buff[src_size - cur_size],
+ cur_size);
+
priv->pos = (priv->pos + cur_size) % buff_size;
- if (cur_size != size || (old_pos && (old_pos % period_size < size)))
+ if (cur_size != src_size || (old_pos && (old_pos % period_size < size)))
snd_pcm_period_elapsed(priv->substream);
return 0;
}
-static int stm32_adfsdm_trigger(struct snd_pcm_substream *substream, int cmd)
+static int stm32_adfsdm_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int cmd)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct stm32_adfsdm_priv *priv =
- snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
@@ -201,10 +229,11 @@
return -EINVAL;
}
-static int stm32_adfsdm_pcm_open(struct snd_pcm_substream *substream)
+static int stm32_adfsdm_pcm_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct stm32_adfsdm_priv *priv = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct stm32_adfsdm_priv *priv = snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
int ret;
ret = snd_soc_set_runtime_hwparams(substream, &stm32_adfsdm_pcm_hw);
@@ -214,85 +243,63 @@
return ret;
}
-static int stm32_adfsdm_pcm_close(struct snd_pcm_substream *substream)
+static int stm32_adfsdm_pcm_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct stm32_adfsdm_priv *priv =
- snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
- snd_pcm_lib_free_pages(substream);
priv->substream = NULL;
return 0;
}
static snd_pcm_uframes_t stm32_adfsdm_pcm_pointer(
+ struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct stm32_adfsdm_priv *priv =
- snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
return bytes_to_frames(substream->runtime, priv->pos);
}
-static int stm32_adfsdm_pcm_hw_params(struct snd_pcm_substream *substream,
+static int stm32_adfsdm_pcm_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct stm32_adfsdm_priv *priv =
- snd_soc_dai_get_drvdata(rtd->cpu_dai);
- int ret;
+ snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
- ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
- if (ret < 0)
- return ret;
priv->pcm_buff = substream->runtime->dma_area;
return iio_channel_cb_set_buffer_watermark(priv->iio_cb,
params_period_size(params));
}
-static int stm32_adfsdm_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- snd_pcm_lib_free_pages(substream);
-
- return 0;
-}
-
-static struct snd_pcm_ops stm32_adfsdm_pcm_ops = {
- .open = stm32_adfsdm_pcm_open,
- .close = stm32_adfsdm_pcm_close,
- .hw_params = stm32_adfsdm_pcm_hw_params,
- .hw_free = stm32_adfsdm_pcm_hw_free,
- .trigger = stm32_adfsdm_trigger,
- .pointer = stm32_adfsdm_pcm_pointer,
-};
-
-static int stm32_adfsdm_pcm_new(struct snd_soc_pcm_runtime *rtd)
+static int stm32_adfsdm_pcm_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
{
struct snd_pcm *pcm = rtd->pcm;
struct stm32_adfsdm_priv *priv =
- snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
unsigned int size = DFSDM_MAX_PERIODS * DFSDM_MAX_PERIOD_SIZE;
- return snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
- priv->dev, size, size);
-}
-
-static void stm32_adfsdm_pcm_free(struct snd_pcm *pcm)
-{
- struct snd_pcm_substream *substream;
-
- substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
- if (substream)
- snd_pcm_lib_preallocate_free_for_all(pcm);
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+ priv->dev, size, size);
+ return 0;
}
static struct snd_soc_component_driver stm32_adfsdm_soc_platform = {
- .ops = &stm32_adfsdm_pcm_ops,
- .pcm_new = stm32_adfsdm_pcm_new,
- .pcm_free = stm32_adfsdm_pcm_free,
+ .open = stm32_adfsdm_pcm_open,
+ .close = stm32_adfsdm_pcm_close,
+ .hw_params = stm32_adfsdm_pcm_hw_params,
+ .trigger = stm32_adfsdm_trigger,
+ .pointer = stm32_adfsdm_pcm_pointer,
+ .pcm_construct = stm32_adfsdm_pcm_new,
};
static const struct of_device_id stm32_adfsdm_of_match[] = {
@@ -335,12 +342,17 @@
component = devm_kzalloc(&pdev->dev, sizeof(*component), GFP_KERNEL);
if (!component)
return -ENOMEM;
+
+ ret = snd_soc_component_initialize(component,
+ &stm32_adfsdm_soc_platform,
+ &pdev->dev);
+ if (ret < 0)
+ return ret;
#ifdef CONFIG_DEBUG_FS
component->debugfs_prefix = "pcm";
#endif
- ret = snd_soc_add_component(&pdev->dev, component,
- &stm32_adfsdm_soc_platform, NULL, 0);
+ ret = snd_soc_add_component(component, NULL, 0);
if (ret < 0)
dev_err(&pdev->dev, "%s: Failed to register PCM platform\n",
__func__);
--
Gitblit v1.6.2