Sometimes there is a need to initialize some non-standard registers mapped to the EHCI region before accessing the standard EHCI registers. Add the init() method to the 'ehci-platform' platform data for this purpose.
Suggested-by: Kuninori Morimoto <[email protected]> Signed-off-by: Sergei Shtylyov <[email protected]> --- drivers/usb/host/ehci-platform.c | 7 +++++++ include/linux/usb/ehci_pdriver.h | 1 + 2 files changed, 8 insertions(+) Index: renesas/drivers/usb/host/ehci-platform.c =================================================================== --- renesas.orig/drivers/usb/host/ehci-platform.c +++ renesas/drivers/usb/host/ehci-platform.c @@ -110,6 +110,13 @@ static int ehci_platform_probe(struct pl err = PTR_ERR(hcd->regs); goto err_put_hcd; } + + if (pdata->init) { + err = pdata->init(dev, hcd->regs); + if (err < 0) + goto err_put_hcd; + } + err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) goto err_put_hcd; Index: renesas/include/linux/usb/ehci_pdriver.h =================================================================== --- renesas.orig/include/linux/usb/ehci_pdriver.h +++ renesas/include/linux/usb/ehci_pdriver.h @@ -50,6 +50,7 @@ struct usb_ehci_pdata { /* Turn on only VBUS suspend power and hotplug detection, * turn off everything else */ void (*power_suspend)(struct platform_device *pdev); + int (*init)(struct platform_device *pdev, void __iomem *regs); }; #endif /* __USB_CORE_EHCI_PDRIVER_H */ -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
