usb: renesas_usbhs: add support for requesting DT DMA
This patch adds dma_request_slave_channel_reason() calling to request dma slave channels for multiplatform environment. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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@ -14,6 +14,8 @@ Optional properties:
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function should be enabled
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- phys: phandle + phy specifier pair
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- phy-names: must be "usb"
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- dmas: Must contain a list of references to DMA specifiers.
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- dma-names : Must contain a list of DMA names, "tx" or "rx".
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Example:
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usbhs: usb@e6590000 {
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@ -1069,12 +1069,21 @@ static void usbhsf_dma_init_pdev(struct usbhs_fifo *fifo)
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&fifo->rx_slave);
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}
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static void usbhsf_dma_init_dt(struct device *dev, struct usbhs_fifo *fifo)
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{
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fifo->tx_chan = dma_request_slave_channel_reason(dev, "tx");
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fifo->rx_chan = dma_request_slave_channel_reason(dev, "rx");
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}
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static void usbhsf_dma_init(struct usbhs_priv *priv,
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struct usbhs_fifo *fifo)
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{
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struct device *dev = usbhs_priv_to_dev(priv);
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usbhsf_dma_init_pdev(fifo);
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if (dev->of_node)
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usbhsf_dma_init_dt(dev, fifo);
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else
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usbhsf_dma_init_pdev(fifo);
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if (fifo->tx_chan || fifo->rx_chan)
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dev_dbg(dev, "enable DMAEngine (%s%s%s)\n",
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