[U-Boot] [PATCH 1/2] usb: gadget: fotg210: add w1c interrupt status support

[Kuo-Jung Su <dantesu@gmail.com>]

From: Kuo-Jung Su <dantesu@faraday-tech.com>

Since hardware revision 1.11.0, the following interrupt status registers
are now write-1-clear (w1c):

1. Interrupt Source Group 0 Register (0x144) (EP0 Abort: BIT5)
2. Interrupt Source Group 2 Register (0x14C) (All bits)

Signed-off-by: Kuo-Jung Su <dantesu@faraday-tech.com>
CC: Marek Vasut <marex@denx.de>
---
 drivers/usb/gadget/fotg210.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/fotg210.c b/drivers/usb/gadget/fotg210.c
index 6e19db1..e3a61cc 100644
--- a/drivers/usb/gadget/fotg210.c
+++ b/drivers/usb/gadget/fotg210.c
@@ -847,8 +847,11 @@ int usb_gadget_handle_interrupts(void)
 	/* CX interrupts */
 	if (gisr & GISR_GRP0) {
 		st = readl(&regs->gisr0);
+#ifdef CONFIG_USB_GADGET_FOTG210_ISRW1C
+		writel(st & GISR0_CXABORT, &regs->gisr0);
+#else
 		writel(0, &regs->gisr0);
-
+#endif
 		if (st & GISR0_CXERR)
 			printf("fotg210: cmd error\n");
 
@@ -873,8 +876,11 @@ int usb_gadget_handle_interrupts(void)
 	/* Device Status Interrupts */
 	if (gisr & GISR_GRP2) {
 		st = readl(&regs->gisr2);
+#ifdef CONFIG_USB_GADGET_FOTG210_ISRW1C
+		writel(st, &regs->gisr2);
+#else
 		writel(0, &regs->gisr2);
-
+#endif
 		if (st & GISR2_RESET)
 			printf("fotg210: reset by host\n");
 		else if (st & GISR2_SUSPEND)
-- 
1.7.9.5