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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
This commit is contained in:
Liam Girdwood
Mark Brown
parent
01d7584cd2
commit
f86dcef87b
@ -81,6 +81,9 @@ struct snd_soc_dpcm {
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/* hw params for this link - may be different for each link */
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struct snd_pcm_hw_params hw_params;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs_state;
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#endif
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};
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/*
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@ -128,5 +131,6 @@ void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, int stream,
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/* internal use only */
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int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute);
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int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd);
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#endif
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@ -957,6 +957,10 @@ struct snd_soc_pcm_runtime {
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struct snd_soc_dai *cpu_dai;
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struct delayed_work delayed_work;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs_dpcm_root;
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struct dentry *debugfs_dpcm_state;
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#endif
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};
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/* mixer control */
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@ -1187,6 +1187,17 @@ static int soc_post_component_init(struct snd_soc_card *card,
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dev_err(codec->dev,
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"asoc: failed to add codec sysfs files: %d\n", ret);
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#ifdef CONFIG_DEBUG_FS
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/* add DPCM sysfs entries */
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if (!dai_link->dynamic)
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goto out;
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ret = soc_dpcm_debugfs_add(rtd);
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if (ret < 0)
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dev_err(rtd->dev, "asoc: failed to add dpcm sysfs entries: %d\n", ret);
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out:
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#endif
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return 0;
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}
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@ -23,6 +23,7 @@
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <linux/export.h>
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#include <linux/debugfs.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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@ -690,6 +691,10 @@ static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
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stream ? "capture" : "playback", fe->dai_link->name,
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stream ? "<-" : "->", be->dai_link->name);
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#ifdef CONFIG_DEBUG_FS
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dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
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fe->debugfs_dpcm_root, &dpcm->state);
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#endif
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return 1;
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}
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@ -741,6 +746,9 @@ static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
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/* BEs still alive need new FE */
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dpcm_be_reparent(fe, dpcm->be, stream);
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#ifdef CONFIG_DEBUG_FS
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debugfs_remove(dpcm->debugfs_state);
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#endif
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list_del(&dpcm->list_be);
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list_del(&dpcm->list_fe);
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kfree(dpcm);
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@ -1890,3 +1898,147 @@ int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
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return 1;
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}
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EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
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#ifdef CONFIG_DEBUG_FS
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static char *dpcm_state_string(enum snd_soc_dpcm_state state)
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{
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switch (state) {
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case SND_SOC_DPCM_STATE_NEW:
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return "new";
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case SND_SOC_DPCM_STATE_OPEN:
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return "open";
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case SND_SOC_DPCM_STATE_HW_PARAMS:
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return "hw_params";
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case SND_SOC_DPCM_STATE_PREPARE:
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return "prepare";
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case SND_SOC_DPCM_STATE_START:
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return "start";
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case SND_SOC_DPCM_STATE_STOP:
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return "stop";
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case SND_SOC_DPCM_STATE_SUSPEND:
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return "suspend";
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case SND_SOC_DPCM_STATE_PAUSED:
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return "paused";
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case SND_SOC_DPCM_STATE_HW_FREE:
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return "hw_free";
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case SND_SOC_DPCM_STATE_CLOSE:
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return "close";
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}
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return "unknown";
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}
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static int dpcm_state_open_file(struct inode *inode, struct file *file)
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{
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file->private_data = inode->i_private;
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return 0;
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}
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static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
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int stream, char *buf, size_t size)
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{
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struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
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struct snd_soc_dpcm *dpcm;
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ssize_t offset = 0;
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/* FE state */
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offset += snprintf(buf + offset, size - offset,
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"[%s - %s]\n", fe->dai_link->name,
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stream ? "Capture" : "Playback");
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offset += snprintf(buf + offset, size - offset, "State: %s\n",
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dpcm_state_string(fe->dpcm[stream].state));
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if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
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(fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
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offset += snprintf(buf + offset, size - offset,
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"Hardware Params: "
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"Format = %s, Channels = %d, Rate = %d\n",
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snd_pcm_format_name(params_format(params)),
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params_channels(params),
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params_rate(params));
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/* BEs state */
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offset += snprintf(buf + offset, size - offset, "Backends:\n");
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if (list_empty(&fe->dpcm[stream].be_clients)) {
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offset += snprintf(buf + offset, size - offset,
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" No active DSP links\n");
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goto out;
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}
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list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
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struct snd_soc_pcm_runtime *be = dpcm->be;
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params = &dpcm->hw_params;
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offset += snprintf(buf + offset, size - offset,
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"- %s\n", be->dai_link->name);
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offset += snprintf(buf + offset, size - offset,
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" State: %s\n",
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dpcm_state_string(be->dpcm[stream].state));
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if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
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(be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
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offset += snprintf(buf + offset, size - offset,
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" Hardware Params: "
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"Format = %s, Channels = %d, Rate = %d\n",
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snd_pcm_format_name(params_format(params)),
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params_channels(params),
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params_rate(params));
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}
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out:
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return offset;
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}
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static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct snd_soc_pcm_runtime *fe = file->private_data;
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ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
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char *buf;
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buf = kmalloc(out_count, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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if (fe->cpu_dai->driver->playback.channels_min)
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offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
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buf + offset, out_count - offset);
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if (fe->cpu_dai->driver->capture.channels_min)
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offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
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buf + offset, out_count - offset);
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
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kfree(buf);
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return ret;
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}
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static const struct file_operations dpcm_state_fops = {
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.open = dpcm_state_open_file,
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.read = dpcm_state_read_file,
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.llseek = default_llseek,
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};
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int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
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{
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rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
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rtd->card->debugfs_card_root);
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if (!rtd->debugfs_dpcm_root) {
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dev_dbg(rtd->dev,
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"ASoC: Failed to create dpcm debugfs directory %s\n",
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rtd->dai_link->name);
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return -EINVAL;
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}
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rtd->debugfs_dpcm_state = debugfs_create_file("state", 0644,
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rtd->debugfs_dpcm_root,
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rtd, &dpcm_state_fops);
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return 0;
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}
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#endif
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