On Wed, Jul 05, 2017 at 08:19:52PM +0300, Dmitry Osipenko wrote:
> + /* setup and register ChipIdea HDRC device */
> + udc->data.name = "tegra-udc";
> + udc->data.capoffset = DEF_CAPOFFSET;
> + udc->data.flags = 0;
> + udc->data.usb_phy = udc->phy;
> +
> + /* setup device specific quirks */
> + soc = id->data;
> +
> + if (!soc->supports_unaligned_dma)
> + udc->data.flags |= CI_HDRC_REQUIRES_ALIGNED_DMA;
> +
> + /* power on UDC controller */
> + usb_phy_set_suspend(udc->phy, 0);
Why above is needed? The chipidea core will do usb_phy_init for power
on.
> +
> + udc->dev = ci_hdrc_add_device(&pdev->dev, pdev->resource,
> + pdev->num_resources, &udc->data);
> + if (IS_ERR(udc->dev)) {
> + err = PTR_ERR(udc->dev);
> + dev_err(&pdev->dev, "failed to add HDRC device: %d\n", err);
> + goto power_off;
> + }
> +
> + platform_set_drvdata(pdev, udc);
> +
> + return 0;
> +
> +power_off:
> + usb_phy_set_suspend(udc->phy, 1);
[...]
> +static int tegra_udc_remove(struct platform_device *pdev)
> +{
> + struct tegra_udc *udc = platform_get_drvdata(pdev);
> +
> + usb_phy_set_suspend(udc->phy, 1);
[...]
--
Best Regards,
Peter Chen
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