diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2013-03-30 12:54:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-30 08:13:58 -0700 |
| commit | f0c910b63cc273c239964776fae1aaa58ed4ad2b (patch) | |
| tree | 96b64c34bf5c6cc39b0ba39b899646e2575b2eac | |
| parent | e609108a5ba70ecf3b1b6a7e09e5a56244e92926 (diff) | |
usb: chipidea: usbmisc: add mx53 support
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 <m.grzeschik@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
[Alex: fixed another set of line-too-long and void pointer cast]
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/chipidea/usbmisc_imx.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 08b046f9491b..746013d7d391 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -19,6 +19,13 @@ #define USB_DEV_MAX 4 +#define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08 +#define MX53_USB_UH2_CTRL_OFFSET 0x14 +#define MX53_USB_UH3_CTRL_OFFSET 0x18 +#define MX53_BM_OVER_CUR_DIS_H1 BIT(5) +#define MX53_BM_OVER_CUR_DIS_OTG BIT(8) +#define MX53_BM_OVER_CUR_DIS_UHx BIT(30) + #define MX6_BM_OVER_CUR_DIS BIT(7) struct imx_usbmisc { @@ -52,6 +59,45 @@ 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 = NULL; + unsigned long flags; + u32 val = 0; + + usbdev = get_usbdev(dev); + if (IS_ERR(usbdev)) + return PTR_ERR(usbdev); + + if (usbdev->disable_oc) { + spin_lock_irqsave(&usbmisc->lock, flags); + switch (usbdev->index) { + case 0: + reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET; + val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG; + break; + case 1: + reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET; + val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1; + break; + case 2: + reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET; + val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx; + break; + case 3: + reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET; + val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx; + break; + } + if (reg && val) + writel(val, reg); + spin_unlock_irqrestore(&usbmisc->lock, flags); + } + + return 0; +} + static int usbmisc_imx6q_init(struct device *dev) { @@ -74,12 +120,20 @@ static int usbmisc_imx6q_init(struct device *dev) return 0; } +static const struct usbmisc_ops imx53_usbmisc_ops = { + .init = usbmisc_imx53_init, +}; + static const struct usbmisc_ops imx6q_usbmisc_ops = { .init = usbmisc_imx6q_init, }; static const struct of_device_id usbmisc_imx_dt_ids[] = { { + .compatible = "fsl,imx53-usbmisc", + .data = &imx53_usbmisc_ops, + }, + { .compatible = "fsl,imx6q-usbmisc", .data = &imx6q_usbmisc_ops, }, |