diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/musb_gadget.c | 57 |
1 files changed, 53 insertions, 4 deletions
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 6f3cf4ce8bd6..0a50a35e1853 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -372,7 +372,7 @@ static void txstate(struct musb *musb, struct musb_request *req) /* MUSB_TXCSR_P_ISO is still set correctly */ -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) { if (request_size < musb_ep->packet_sz) musb_ep->dma->desired_mode = 0; @@ -555,7 +555,7 @@ void musb_g_tx(struct musb *musb, u8 epnum) if ((request->zero && request->length && (request->length % musb_ep->packet_sz == 0) && (request->actual == request->length)) -#ifdef CONFIG_USB_INVENTRA_DMA +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) || (is_dma && (!dma->desired_mode || (request->actual & (musb_ep->packet_sz - 1)))) @@ -758,6 +758,53 @@ static void rxstate(struct musb *musb, struct musb_request *req) if (use_dma) return; } +#elif defined(CONFIG_USB_UX500_DMA) + if ((is_buffer_mapped(req)) && + (request->actual < request->length)) { + + struct dma_controller *c; + struct dma_channel *channel; + int transfer_size = 0; + + c = musb->dma_controller; + channel = musb_ep->dma; + + /* In case first packet is short */ + if (len < musb_ep->packet_sz) + transfer_size = len; + else if (request->short_not_ok) + transfer_size = min(request->length - + request->actual, + channel->max_len); + else + transfer_size = min(request->length - + request->actual, + (unsigned)len); + + csr &= ~MUSB_RXCSR_DMAMODE; + csr |= (MUSB_RXCSR_DMAENAB | + MUSB_RXCSR_AUTOCLEAR); + + musb_writew(epio, MUSB_RXCSR, csr); + + if (transfer_size <= musb_ep->packet_sz) { + musb_ep->dma->desired_mode = 0; + } else { + musb_ep->dma->desired_mode = 1; + /* Mode must be set after DMAENAB */ + csr |= MUSB_RXCSR_DMAMODE; + musb_writew(epio, MUSB_RXCSR, csr); + } + + if (c->channel_program(channel, + musb_ep->packet_sz, + channel->desired_mode, + request->dma + + request->actual, + transfer_size)) + + return; + } #endif /* Mentor's DMA */ fifo_count = request->length - request->actual; @@ -895,7 +942,8 @@ void musb_g_rx(struct musb *musb, u8 epnum) musb_readw(epio, MUSB_RXCSR), musb_ep->dma->actual_len, request); -#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_TUSB_OMAP_DMA) +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_TUSB_OMAP_DMA) || \ + defined(CONFIG_USB_UX500_DMA) /* Autoclear doesn't clear RxPktRdy for short packets */ if ((dma->desired_mode == 0 && !hw_ep->rx_double_buffered) || (dma->actual_len @@ -925,7 +973,8 @@ void musb_g_rx(struct musb *musb, u8 epnum) if (!req) return; } -#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_TUSB_OMAP_DMA) +#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_TUSB_OMAP_DMA) || \ + defined(CONFIG_USB_UX500_DMA) exit: #endif /* Analyze request */ |