diff options
| author | George Cherian <george.cherian@ti.com> | 2014-01-27 13:37:24 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-02-18 19:25:55 +0400 |
| commit | c57c41d2c6a1fdb3cfecb5edcee386d5db67ac02 (patch) | |
| tree | ec89512d2cbdd04d4687bd55a61e3574cca5ce9f /drivers | |
| parent | 6d36b6f313738e99fc8b903697f8ecf06add29aa (diff) | |
| download | linux-c57c41d2c6a1fdb3cfecb5edcee386d5db67ac02.tar.xz | |
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: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index ed455724017b..79b75106f273 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -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; |