diff options
Diffstat (limited to 'drivers/usb/gadget/at91_udc.c')
| -rw-r--r-- | drivers/usb/gadget/at91_udc.c | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 917ec4d006..a11379c933 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1316,17 +1316,9 @@ static struct at91_udc controller = { static void at91_udc_irq (void *_udc); -static void at91_update_vbus(struct at91_udc *udc, u32 value) +static int at91_udc_vbus_set(struct param_d *p, void *priv) { - if (value == udc->gpio_vbus_val) - return; - - if (value) - dev_set_param(udc->dev, "vbus", "1"); - else - dev_set_param(udc->dev, "vbus", "0"); - - udc->gpio_vbus_val = value; + return -EROFS; } int usb_gadget_poll(void) @@ -1340,11 +1332,10 @@ int usb_gadget_poll(void) value = gpio_get_value(udc->board.vbus_pin); value ^= udc->board.vbus_active_low; - if (!value) { - at91_update_vbus(udc, value); + udc->gpio_vbus_val = value; + + if (!value) return 0; - } - at91_update_vbus(udc, value); value = at91_udp_read(udc, AT91_UDP_ISR) & (~(AT91_UDP_SOFINT)); if (value) @@ -1516,8 +1507,8 @@ static int __init at91udc_probe(struct device_d *dev) udc->vbus = 1; } - dev_add_param(dev, "vbus", NULL, NULL, 0); - dev_set_param(dev, "vbus", "0"); + dev_add_param_bool(dev, "vbus", + at91_udc_vbus_set, NULL, &udc->gpio_vbus_val, udc); poller_register(&poller); |