On Fri, 7 Jun 2013, Manjunath Goudar wrote:
> Separate the TI OHCI SPEAr host controller driver from ohci-hcd
> host code so that it can be built as a separate driver module.
> This work is part of enabling multi-platform kernels on ARM.
> @@ -151,16 +98,24 @@ static int spear_ohci_hcd_drv_probe(struct
> platform_device *pdev)
> goto err_put_hcd;
> }
>
> - ohci_p = (struct spear_ohci *)hcd_to_ohci(hcd);
> - ohci_p->clk = usbh_clk;
> - spear_start_ohci(ohci_p);
> - ohci_hcd_init(hcd_to_ohci(hcd));
> + sohci_p = to_spear_ohci(hcd);
> + sohci_p->clk = usbh_clk;
> + hcd_to_ohci(hcd)->regs = hcd->regs;
This line isn't needed. It is one of the first things that ohci_init()
does.
> +
> + ohci_setup(hcd);
Don't call ohci_setup().
> + clk_prepare_enable(sohci_p->clk);
> +
> + ohci = hcd_to_ohci(hcd);
> +
> +#ifdef DEBUG
> + ohci_dump(ohci, 1);
> +#endif
I suspect this debugging stuff isn't needed any more. You can get rid
of it.
> @@ -188,13 +143,13 @@ static int spear_ohci_hcd_drv_suspend(struct
> platform_device *dev,
> {
> struct usb_hcd *hcd = platform_get_drvdata(dev);
> struct ohci_hcd *ohci = hcd_to_ohci(hcd);
> - struct spear_ohci *ohci_p = to_spear_ohci(hcd);
> + struct spear_ohci *sohci_p = to_spear_ohci(hcd);
>
> if (time_before(jiffies, ohci->next_statechange))
> msleep(5);
> ohci->next_statechange = jiffies;
>
> - spear_stop_ohci(ohci_p);
> + clk_disable_unprepare(sohci_p->clk);
> return 0;
> }
This routine needs to call ohci_suspend() just before the
clk_disable_unprepare(). I don't know how that got left out, but it
looks like the same problem exists in several of the ohci glue files.
I guess they should all be fixed at once, in a separate patch.
>
> @@ -202,13 +157,13 @@ static int spear_ohci_hcd_drv_resume(struct
> platform_device *dev)
> {
> struct usb_hcd *hcd = platform_get_drvdata(dev);
> struct ohci_hcd *ohci = hcd_to_ohci(hcd);
> - struct spear_ohci *ohci_p = to_spear_ohci(hcd);
> + struct spear_ohci *sohci_p = to_spear_ohci(hcd);
>
> if (time_before(jiffies, ohci->next_statechange))
> msleep(5);
> ohci->next_statechange = jiffies;
>
> - spear_start_ohci(ohci_p);
> + clk_prepare_enable(sohci_p->clk);
You got an extra space character after the tab.
Alan Stern
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