Re: [PATCH v2 6/7] usb: chipidea: usbmisc: add mx53 support
From: Alexander Shishkin <hidden>
Date: 2012-11-16 13:22:34
Also in:
linux-arm-kernel
Michael Grzeschik [off-list ref] writes:
quoted hunk
This adds mx53 as the next user of the usbmisc driver and makes it possible to disable the overcurrent-detection of the internal phy. Signed-off-by: Michael Grzeschik <redacted> Signed-off-by: Marc Kleine-Budde <redacted> --- drivers/usb/chipidea/usbmisc_imx.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 913e414..9718500 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c@@ -54,6 +54,29 @@ static struct usbmisc_usb_device *get_usbdev(struct device *dev) return &usbmisc->usbdev[i]; } +static int usbmisc_imx53_init(struct device *dev) +{ + struct usbmisc_usb_device *usbdev; + void __iomem *reg; + unsigned long flags; + u32 val; + + usbdev = get_usbdev(dev); + if (IS_ERR(usbdev)) + return PTR_ERR(usbdev); + + reg = usbmisc->base + usbdev->index * 8; + + if (usbdev->disable_oc) { + spin_lock_irqsave(&usbmisc->lock, flags); + val = readl(reg); + writel(val | (1 << 5), reg);
We know now that (1 << 5) probably means "disable overcurrent detection", but is there a definition for this register's bits somewhere? Regards, -- Alex -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html