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| author | John Youn <John.Youn@synopsys.com> | 2017-01-23 14:58:52 -0800 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-01-24 16:19:08 +0200 |
| commit | 2124f9e673124b72fdbd2d534526ab76f0771766 (patch) | |
| tree | 3f78fa485de4b589adef63348febb047b4fcb05e /drivers/usb/dwc2 | |
| parent | 5dc6422564b3f6ab8f87611ca1ade3adb369770b (diff) | |
| download | linux-2124f9e673124b72fdbd2d534526ab76f0771766.tar.gz linux-2124f9e673124b72fdbd2d534526ab76f0771766.tar.xz | |
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>
Diffstat (limited to 'drivers/usb/dwc2')
| -rw-r--r-- | drivers/usb/dwc2/debugfs.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c index 57747b0df595..794b959a7c8c 100644 --- a/drivers/usb/dwc2/debugfs.c +++ b/drivers/usb/dwc2/debugfs.c @@ -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); |