Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

usb: musb: Remove ifdefs for musb_host_rx in musb_host.c part1

Browse source 
Remove ifdefs for musb_host_rx to get closer to building in
all the DMA drivers.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Tony Lindgren 2015-05-01 12:29:33 -07:00 committed by Felipe Balbi
parent 754fe4a92c
commit 069a3fd19a
1 changed files with 44 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

61
drivers/usb/musb/musb_host.c
View file

@ -1533,6 +1533,44 @@ void musb_host_tx(struct musb *musb, u8 epnum)
MUSB_TXCSR_H_WZC_BITS | MUSB_TXCSR_TXPKTRDY);
}
#ifdef CONFIG_USB_TI_CPPI41_DMA
/* Seems to set up ISO for cppi41 and not advance len. See commit c57c41d */
static int musb_rx_dma_iso_cppi41(struct dma_controller *dma,
struct musb_hw_ep *hw_ep,
struct musb_qh *qh,
struct urb *urb,
size_t len)
{
struct dma_channel *channel = hw_ep->tx_channel;
void __iomem *epio = hw_ep->regs;
dma_addr_t *buf;
u32 length, res;
u16 val;
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_readw(epio, MUSB_RXCSR);
val |= MUSB_RXCSR_DMAENAB;
musb_writew(hw_ep->regs, MUSB_RXCSR, val);
res = dma->channel_program(channel, qh->maxpacket, 0,
(u32)buf, length);
return res;
}
#else
static inline int musb_rx_dma_iso_cppi41(struct dma_controller *dma,
struct musb_hw_ep *hw_ep,
struct musb_qh *qh,
struct urb *urb,
size_t len)
{
return false;
}
#endif
#ifdef CONFIG_USB_INVENTRA_DMA
@ -1746,25 +1784,14 @@ void musb_host_rx(struct musb *musb, u8 epnum)
if (++qh->iso_idx >= urb->number_of_packets) {
done = true;
} else {
#if defined(CONFIG_USB_TI_CPPI41_DMA)
struct dma_controller *c;
dma_addr_t *buf;
u32 length, ret;
struct dma_controller *c = musb->dma_controller;
c = musb->dma_controller;
buf = (void *)
urb->iso_frame_desc[qh->iso_idx].offset
+ (u32)urb->transfer_dma;
/* REVISIT: Why ignore return value here? */
if (musb_dma_cppi41(musb))
done = musb_rx_dma_iso_cppi41(c, hw_ep,
qh, urb,
xfer_len);
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;
}