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ASoC: Add bias level data to DAPM context debugfs
This is also in the old sysfs diagnostics but it's nice to have everything in one place. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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34bad69cf6
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ef49e4fae3
@ -1304,6 +1304,47 @@ static const struct file_operations dapm_widget_power_fops = {
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.llseek = default_llseek,
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};
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static int dapm_bias_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 dapm_bias_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_dapm_context *dapm = file->private_data;
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char *level;
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switch (dapm->bias_level) {
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case SND_SOC_BIAS_ON:
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level = "On\n";
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break;
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case SND_SOC_BIAS_PREPARE:
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level = "Prepare\n";
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break;
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case SND_SOC_BIAS_STANDBY:
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level = "Standby\n";
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break;
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case SND_SOC_BIAS_OFF:
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level = "Off\n";
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break;
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default:
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BUG();
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level = "Unknown\n";
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break;
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}
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return simple_read_from_buffer(user_buf, count, ppos, level,
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strlen(level));
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}
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static const struct file_operations dapm_bias_fops = {
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.open = dapm_bias_open_file,
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.read = dapm_bias_read_file,
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.llseek = default_llseek,
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};
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void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm)
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{
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struct snd_soc_dapm_widget *w;
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@ -1312,6 +1353,13 @@ void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm)
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if (!dapm->debugfs_dapm)
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return;
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d = debugfs_create_file("bias_level", 0444,
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dapm->debugfs_dapm, dapm,
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&dapm_bias_fops);
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if (!d)
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dev_warn(dapm->dev,
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"ASoC: Failed to create bias level debugfs file\n");
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list_for_each_entry(w, &dapm->card->widgets, list) {
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if (!w->name || w->dapm != dapm)
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continue;
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