diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs/fifo.c')
| -rw-r--r-- | drivers/usb/renesas_usbhs/fifo.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index f46271ce1b15..d891bff39d66 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -1054,10 +1054,8 @@ static void usbhsf_dma_quit(struct usbhs_priv *priv, struct usbhs_fifo *fifo) fifo->rx_chan = NULL; } -static void usbhsf_dma_init(struct usbhs_priv *priv, - struct usbhs_fifo *fifo) +static void usbhsf_dma_init_pdev(struct usbhs_fifo *fifo) { - struct device *dev = usbhs_priv_to_dev(priv); dma_cap_mask_t mask; dma_cap_zero(mask); @@ -1069,6 +1067,27 @@ static void usbhsf_dma_init(struct usbhs_priv *priv, dma_cap_set(DMA_SLAVE, mask); fifo->rx_chan = dma_request_channel(mask, usbhsf_dma_filter, &fifo->rx_slave); +} + +static void usbhsf_dma_init_dt(struct device *dev, struct usbhs_fifo *fifo) +{ + fifo->tx_chan = dma_request_slave_channel_reason(dev, "tx"); + if (IS_ERR(fifo->tx_chan)) + fifo->tx_chan = NULL; + fifo->rx_chan = dma_request_slave_channel_reason(dev, "rx"); + if (IS_ERR(fifo->rx_chan)) + fifo->rx_chan = NULL; +} + +static void usbhsf_dma_init(struct usbhs_priv *priv, + struct usbhs_fifo *fifo) +{ + struct device *dev = usbhs_priv_to_dev(priv); + + if (dev->of_node) + usbhsf_dma_init_dt(dev, fifo); + else + usbhsf_dma_init_pdev(fifo); if (fifo->tx_chan || fifo->rx_chan) dev_dbg(dev, "enable DMAEngine (%s%s%s)\n", |