ASoC: dpcm: Add debugFS support for DPCM
Add debugFS files for DPCM link management information. Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>hifive-unleashed-5.1
Liam Girdwood
Mark Brown
parent
01d7584cd2
commit
f86dcef87b
|
|
@ -81,6 +81,9 @@ struct snd_soc_dpcm {
|
|||
|
||||
/* hw params for this link - may be different for each link */
|
||||
struct snd_pcm_hw_params hw_params;
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
struct dentry *debugfs_state;
|
||||
#endif
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
@ -128,5 +131,6 @@ void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, int stream,
|
|||
|
||||
/* internal use only */
|
||||
int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute);
|
||||
int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -957,6 +957,10 @@ struct snd_soc_pcm_runtime {
|
|||
struct snd_soc_dai *cpu_dai;
|
||||
|
||||
struct delayed_work delayed_work;
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
struct dentry *debugfs_dpcm_root;
|
||||
struct dentry *debugfs_dpcm_state;
|
||||
#endif
|
||||
};
|
||||
|
||||
/* mixer control */
|
||||
|
|
|
|||
|
|
@ -1187,6 +1187,17 @@ static int soc_post_component_init(struct snd_soc_card *card,
|
|||
dev_err(codec->dev,
|
||||
"asoc: failed to add codec sysfs files: %d\n", ret);
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
/* add DPCM sysfs entries */
|
||||
if (!dai_link->dynamic)
|
||||
goto out;
|
||||
|
||||
ret = soc_dpcm_debugfs_add(rtd);
|
||||
if (ret < 0)
|
||||
dev_err(rtd->dev, "asoc: failed to add dpcm sysfs entries: %d\n", ret);
|
||||
|
||||
out:
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -23,6 +23,7 @@
|
|||
#include <linux/slab.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/debugfs.h>
|
||||
#include <sound/core.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/pcm_params.h>
|
||||
|
|
@ -690,6 +691,10 @@ static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
|
|||
stream ? "capture" : "playback", fe->dai_link->name,
|
||||
stream ? "<-" : "->", be->dai_link->name);
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
|
||||
fe->debugfs_dpcm_root, &dpcm->state);
|
||||
#endif
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
|
@ -741,6 +746,9 @@ static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
|
|||
/* BEs still alive need new FE */
|
||||
dpcm_be_reparent(fe, dpcm->be, stream);
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
debugfs_remove(dpcm->debugfs_state);
|
||||
#endif
|
||||
list_del(&dpcm->list_be);
|
||||
list_del(&dpcm->list_fe);
|
||||
kfree(dpcm);
|
||||
|
|
@ -1890,3 +1898,147 @@ int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
|
|||
return 1;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
static char *dpcm_state_string(enum snd_soc_dpcm_state state)
|
||||
{
|
||||
switch (state) {
|
||||
case SND_SOC_DPCM_STATE_NEW:
|
||||
return "new";
|
||||
case SND_SOC_DPCM_STATE_OPEN:
|
||||
return "open";
|
||||
case SND_SOC_DPCM_STATE_HW_PARAMS:
|
||||
return "hw_params";
|
||||
case SND_SOC_DPCM_STATE_PREPARE:
|
||||
return "prepare";
|
||||
case SND_SOC_DPCM_STATE_START:
|
||||
return "start";
|
||||
case SND_SOC_DPCM_STATE_STOP:
|
||||
return "stop";
|
||||
case SND_SOC_DPCM_STATE_SUSPEND:
|
||||
return "suspend";
|
||||
case SND_SOC_DPCM_STATE_PAUSED:
|
||||
return "paused";
|
||||
case SND_SOC_DPCM_STATE_HW_FREE:
|
||||
return "hw_free";
|
||||
case SND_SOC_DPCM_STATE_CLOSE:
|
||||
return "close";
|
||||
}
|
||||
|
||||
return "unknown";
|
||||
}
|
||||
|
||||
static int dpcm_state_open_file(struct inode *inode, struct file *file)
|
||||
{
|
||||
file->private_data = inode->i_private;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
|
||||
int stream, char *buf, size_t size)
|
||||
{
|
||||
struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
|
||||
struct snd_soc_dpcm *dpcm;
|
||||
ssize_t offset = 0;
|
||||
|
||||
/* FE state */
|
||||
offset += snprintf(buf + offset, size - offset,
|
||||
"[%s - %s]\n", fe->dai_link->name,
|
||||
stream ? "Capture" : "Playback");
|
||||
|
||||
offset += snprintf(buf + offset, size - offset, "State: %s\n",
|
||||
dpcm_state_string(fe->dpcm[stream].state));
|
||||
|
||||
if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
|
||||
(fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
|
||||
offset += snprintf(buf + offset, size - offset,
|
||||
"Hardware Params: "
|
||||
"Format = %s, Channels = %d, Rate = %d\n",
|
||||
snd_pcm_format_name(params_format(params)),
|
||||
params_channels(params),
|
||||
params_rate(params));
|
||||
|
||||
/* BEs state */
|
||||
offset += snprintf(buf + offset, size - offset, "Backends:\n");
|
||||
|
||||
if (list_empty(&fe->dpcm[stream].be_clients)) {
|
||||
offset += snprintf(buf + offset, size - offset,
|
||||
" No active DSP links\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
||||
struct snd_soc_pcm_runtime *be = dpcm->be;
|
||||
params = &dpcm->hw_params;
|
||||
|
||||
offset += snprintf(buf + offset, size - offset,
|
||||
"- %s\n", be->dai_link->name);
|
||||
|
||||
offset += snprintf(buf + offset, size - offset,
|
||||
" State: %s\n",
|
||||
dpcm_state_string(be->dpcm[stream].state));
|
||||
|
||||
if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
|
||||
(be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
|
||||
offset += snprintf(buf + offset, size - offset,
|
||||
" Hardware Params: "
|
||||
"Format = %s, Channels = %d, Rate = %d\n",
|
||||
snd_pcm_format_name(params_format(params)),
|
||||
params_channels(params),
|
||||
params_rate(params));
|
||||
}
|
||||
|
||||
out:
|
||||
return offset;
|
||||
}
|
||||
|
||||
static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
|
||||
size_t count, loff_t *ppos)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *fe = file->private_data;
|
||||
ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
|
||||
char *buf;
|
||||
|
||||
buf = kmalloc(out_count, GFP_KERNEL);
|
||||
if (!buf)
|
||||
return -ENOMEM;
|
||||
|
||||
if (fe->cpu_dai->driver->playback.channels_min)
|
||||
offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
|
||||
buf + offset, out_count - offset);
|
||||
|
||||
if (fe->cpu_dai->driver->capture.channels_min)
|
||||
offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
|
||||
buf + offset, out_count - offset);
|
||||
|
||||
ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
|
||||
|
||||
kfree(buf);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const struct file_operations dpcm_state_fops = {
|
||||
.open = dpcm_state_open_file,
|
||||
.read = dpcm_state_read_file,
|
||||
.llseek = default_llseek,
|
||||
};
|
||||
|
||||
int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
|
||||
{
|
||||
rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
|
||||
rtd->card->debugfs_card_root);
|
||||
if (!rtd->debugfs_dpcm_root) {
|
||||
dev_dbg(rtd->dev,
|
||||
"ASoC: Failed to create dpcm debugfs directory %s\n",
|
||||
rtd->dai_link->name);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
rtd->debugfs_dpcm_state = debugfs_create_file("state", 0644,
|
||||
rtd->debugfs_dpcm_root,
|
||||
rtd, &dpcm_state_fops);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue