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Commit c57c41d2 authored by George Cherian's avatar George Cherian Committed by Felipe Balbi
Browse files

usb: musb: musb_host: Enable ISOCH IN handling for AM335x host 



Enable the isochrounous IN handling for AM335x HOST.
Reprogram CPPI to receive consecutive ISOCH frames in the same URB.

Signed-off-by: default avatarGeorge Cherian <george.cherian@ti.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 6d36b6f3

drivers/usb/musb/musb_host.c

+26 −4
Original line number Diff line number Diff line
@@ -1691,7 +1691,8 @@ void musb_host_rx(struct musb *musb, u8 epnum) 
			| MUSB_RXCSR_RXPKTRDY);

		musb_writew(hw_ep->regs, MUSB_RXCSR, val);



#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)

#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) || \

	defined(CONFIG_USB_TI_CPPI41_DMA)

		if (usb_pipeisoc(pipe)) {

			struct usb_iso_packet_descriptor *d;
@@ -1704,10 +1705,30 @@ void musb_host_rx(struct musb *musb, u8 epnum) 
			if (d->status != -EILSEQ && d->status != -EOVERFLOW)

				d->status = 0;



			if (++qh->iso_idx >= urb->number_of_packets)

			if (++qh->iso_idx >= urb->number_of_packets) {

				done = true;

			else

			} else {

#if defined(CONFIG_USB_TI_CPPI41_DMA)

				struct dma_controller   *c;

				dma_addr_t *buf;

				u32 length, ret;



				c = musb->dma_controller;

				buf = (void *)

					urb->iso_frame_desc[qh->iso_idx].offset

					+ (u32)urb->transfer_dma;



				length =

					urb->iso_frame_desc[qh->iso_idx].length;



				val |= MUSB_RXCSR_DMAENAB;

				musb_writew(hw_ep->regs, MUSB_RXCSR, val);



				ret = c->channel_program(dma, qh->maxpacket,

						0, (u32) buf, length);

#endif

				done = false;

			}



		} else  {

		/* done if urb buffer is full or short packet is recd */
@@ -1747,7 +1768,8 @@ void musb_host_rx(struct musb *musb, u8 epnum) 
		}



		/* we are expecting IN packets */

#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)

#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) || \

	defined(CONFIG_USB_TI_CPPI41_DMA)

		if (dma) {

			struct dma_controller	*c;

			u16			rx_count;