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usb: dwc3: Add a function to check properties
Add a function to check properties and call it from probe. This will allow us to add check code without bloating the probe function. This needs to be done after dwc3_get_properties() and dwc3_core_init() so that all the properties and hardware configs are available. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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@ -1019,6 +1019,38 @@ static void dwc3_get_properties(struct dwc3 *dwc)
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}
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static void dwc3_check_params(struct dwc3 *dwc)
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{
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struct device *dev = dwc->dev;
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/* Check the maximum_speed parameter */
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switch (dwc->maximum_speed) {
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case USB_SPEED_LOW:
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case USB_SPEED_FULL:
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case USB_SPEED_HIGH:
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case USB_SPEED_SUPER:
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case USB_SPEED_SUPER_PLUS:
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break;
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default:
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dev_err(dev, "invalid maximum_speed parameter %d\n",
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dwc->maximum_speed);
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/* fall through */
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case USB_SPEED_UNKNOWN:
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/* default to superspeed */
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dwc->maximum_speed = USB_SPEED_SUPER;
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/*
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* default to superspeed plus if we are capable.
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*/
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if (dwc3_is_usb31(dwc) &&
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(DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==
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DWC3_GHWPARAMS3_SSPHY_IFC_GEN2))
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dwc->maximum_speed = USB_SPEED_SUPER_PLUS;
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break;
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}
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}
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static int dwc3_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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@ -1110,32 +1142,7 @@ static int dwc3_probe(struct platform_device *pdev)
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goto err4;
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}
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/* Check the maximum_speed parameter */
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switch (dwc->maximum_speed) {
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case USB_SPEED_LOW:
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case USB_SPEED_FULL:
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case USB_SPEED_HIGH:
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case USB_SPEED_SUPER:
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case USB_SPEED_SUPER_PLUS:
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break;
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default:
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dev_err(dev, "invalid maximum_speed parameter %d\n",
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dwc->maximum_speed);
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/* fall through */
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case USB_SPEED_UNKNOWN:
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/* default to superspeed */
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dwc->maximum_speed = USB_SPEED_SUPER;
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/*
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* default to superspeed plus if we are capable.
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*/
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if (dwc3_is_usb31(dwc) &&
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(DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==
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DWC3_GHWPARAMS3_SSPHY_IFC_GEN2))
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dwc->maximum_speed = USB_SPEED_SUPER_PLUS;
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break;
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}
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dwc3_check_params(dwc);
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ret = dwc3_core_init_mode(dwc);
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if (ret)
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