Remove ifdefs for musb_host_rx to get closer to building in
all the DMA drivers.
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
drivers/usb/musb/musb_host.c | 61 ++++++++++++++++++++++++++++++++------------
1 file changed, 44 insertions(+), 17 deletions(-)
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index fc036ed..75d50c8 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1533,6 +1533,44 @@ done:
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;
}
--
2.1.4
--
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