usb: musb: Fix transmission of bigger buffers
If udc_endpoint_write() was called with bigger payload which does not fit
into one USB packet it is needed to transmit payload in more USB packets.
First packet is transmitted by udc_endpoint_write() call itself and other
packets are put into waiting queue.
Implement function musb_peri_tx() which checks if endpoints are ready for
transmit and continue transmission of waiting queue.
This patch fixes sending big output from printenv command over usbtty
serial console.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Pavel Machek <pavel@ucw.cz>>
diff --git a/drivers/usb/musb/musb_udc.c b/drivers/usb/musb/musb_udc.c
index 67d1c56..28719cc 100644
--- a/drivers/usb/musb/musb_udc.c
+++ b/drivers/usb/musb/musb_udc.c
@@ -708,21 +708,16 @@
static void musb_peri_tx(u16 intr)
{
+ unsigned int ep;
+
/* Check for EP0 */
if (0x01 & intr)
musb_peri_ep0_tx();
- /*
- * Use this in the future when handling epN tx
- *
- * u8 ep;
- *
- * for (ep = 1; ep < 16; ep++) {
- * if ((1 << ep) & intr) {
- * / * handle tx for this endpoint * /
- * }
- * }
- */
+ for (ep = 1; ep < 16; ep++) {
+ if ((1 << ep) & intr)
+ udc_endpoint_write(GET_ENDPOINT(udc_device, ep));
+ }
}
void udc_irq(void)