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

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

Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
George Cherian 2014-01-27 15:07:24 +05:30 committed by Felipe Balbi
parent 6d36b6f313
commit c57c41d2c6
1 changed files with 26 additions and 4 deletions
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30
drivers/usb/musb/musb_host.c
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@ -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;