Commit ef49e4fa authored by Mark Brown's avatar Mark Brown
Browse files

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: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 34bad69c

sound/soc/soc-dapm.c

+48 −0
Original line number Diff line number Diff line
@@ -1304,6 +1304,47 @@ static const struct file_operations dapm_widget_power_fops = { 
	.llseek = default_llseek,

};



static int dapm_bias_open_file(struct inode *inode, struct file *file)

{

	file->private_data = inode->i_private;

	return 0;

}



static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,

				   size_t count, loff_t *ppos)

{

	struct snd_soc_dapm_context *dapm = file->private_data;

	char *level;



	switch (dapm->bias_level) {

	case SND_SOC_BIAS_ON:

		level = "On\n";

		break;

	case SND_SOC_BIAS_PREPARE:

		level = "Prepare\n";

		break;

	case SND_SOC_BIAS_STANDBY:

		level = "Standby\n";

		break;

	case SND_SOC_BIAS_OFF:

		level = "Off\n";

		break;

	default:

		BUG();

		level = "Unknown\n";

		break;

	}



	return simple_read_from_buffer(user_buf, count, ppos, level,

				       strlen(level));

}



static const struct file_operations dapm_bias_fops = {

	.open = dapm_bias_open_file,

	.read = dapm_bias_read_file,

	.llseek = default_llseek,

};



void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm)

{

	struct snd_soc_dapm_widget *w;
@@ -1312,6 +1353,13 @@ void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) 
	if (!dapm->debugfs_dapm)

		return;



	d = debugfs_create_file("bias_level", 0444,

				dapm->debugfs_dapm, dapm,

				&dapm_bias_fops);

	if (!d)

		dev_warn(dapm->dev,

			 "ASoC: Failed to create bias level debugfs file\n");



	list_for_each_entry(w, &dapm->card->widgets, list) {

		if (!w->name || w->dapm != dapm)

			continue;