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usb: dwc2: Show dr_mode via debugfs 

Show the value of dr_mode via a debufs file.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
John Youn 2017-01-23 14:58:52 -08:00 committed by Felipe Balbi
parent 5dc6422564
commit 2124f9e673
1 changed files with 29 additions and 0 deletions
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29
drivers/usb/dwc2/debugfs.c
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@ -839,6 +839,29 @@ static const struct file_operations hw_params_fops = {
.release = single_release,
};
static int dr_mode_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
const char *dr_mode = "";
device_property_read_string(hsotg->dev, "dr_mode", &dr_mode);
seq_printf(seq, "%s\n", dr_mode);
return 0;
}
static int dr_mode_open(struct inode *inode, struct file *file)
{
return single_open(file, dr_mode_show, inode->i_private);
}
static const struct file_operations dr_mode_fops = {
.owner = THIS_MODULE,
.open = dr_mode_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
{
int ret;
@ -863,6 +886,12 @@ int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
dev_err(hsotg->dev, "%s: failed to create hw_params\n",
__func__);
file = debugfs_create_file("dr_mode", 0444,
hsotg->debug_root,
hsotg, &dr_mode_fops);
if (IS_ERR(file))
dev_err(hsotg->dev, "%s: failed to create dr_mode\n", __func__);
/* Add gadget debugfs nodes */
dwc2_hsotg_create_debug(hsotg);