diff options
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/fotg210.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/usb/gadget/fotg210.c b/drivers/usb/gadget/fotg210.c index 6e19db15f..cc5c507f8 100644 --- a/drivers/usb/gadget/fotg210.c +++ b/drivers/usb/gadget/fotg210.c @@ -847,6 +847,13 @@ int usb_gadget_handle_interrupts(void) /* CX interrupts */ if (gisr & GISR_GRP0) { st = readl(®s->gisr0); + /* + * Write 1 and then 0 works for both W1C & RW. + * + * HW v1.11.0+: It's a W1C register (write 1 clear) + * HW v1.10.0-: It's a R/W register (write 0 clear) + */ + writel(st & GISR0_CXABORT, ®s->gisr0); writel(0, ®s->gisr0); if (st & GISR0_CXERR) @@ -873,6 +880,13 @@ int usb_gadget_handle_interrupts(void) /* Device Status Interrupts */ if (gisr & GISR_GRP2) { st = readl(®s->gisr2); + /* + * Write 1 and then 0 works for both W1C & RW. + * + * HW v1.11.0+: It's a W1C register (write 1 clear) + * HW v1.10.0-: It's a R/W register (write 0 clear) + */ + writel(st, ®s->gisr2); writel(0, ®s->gisr2); if (st & GISR2_RESET) |