diff options
Diffstat (limited to 'drivers/gpio/gpiolib-cdev.c')
| -rw-r--r-- | drivers/gpio/gpiolib-cdev.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c index 92f185575e94..0cb6b468f364 100644 --- a/drivers/gpio/gpiolib-cdev.c +++ b/drivers/gpio/gpiolib-cdev.c @@ -1497,6 +1497,21 @@ static int linereq_release(struct inode *inode, struct file *file) return 0; } +#ifdef CONFIG_PROC_FS +static void linereq_show_fdinfo(struct seq_file *out, struct file *file) +{ + struct linereq *lr = file->private_data; + struct device *dev = &lr->gdev->dev; + u16 i; + + seq_printf(out, "gpio-chip:\t%s\n", dev_name(dev)); + + for (i = 0; i < lr->num_lines; i++) + seq_printf(out, "gpio-line:\t%d\n", + gpio_chip_hwgpio(lr->lines[i].desc)); +} +#endif + static const struct file_operations line_fileops = { .release = linereq_release, .read = linereq_read, @@ -1507,6 +1522,9 @@ static const struct file_operations line_fileops = { #ifdef CONFIG_COMPAT .compat_ioctl = linereq_ioctl_compat, #endif +#ifdef CONFIG_PROC_FS + .show_fdinfo = linereq_show_fdinfo, +#endif }; static int linereq_create(struct gpio_device *gdev, void __user *ip) |