[PATCH v2 6/7] usb: chipidea: usbmisc: add mx53 support

On Fri, Nov 16, 2012 at 03:22:34PM +0200, Alexander Shishkin wrote:

Michael Grzeschik [off-list ref] writes:

quoted

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 <mkl@pengutronix.de>
---
 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?

Will add defines for the magic numbers used.

Thanks,
Michael

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