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usb: chipidea: usbmisc_imx: add .set_wakeup interface

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This API is used to enable/disable usb wakeup, only imx6 series are
added, since I don't have other imx hardware on hand. Other imx users
can add their API according to reference manual after testing.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Chen 2015-02-11 12:44:46 +08:00 committed by Greg Kroah-Hartman
parent 1f874edcb7
commit f636cec559
2 changed files with 53 additions and 0 deletions
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1
drivers/usb/chipidea/ci_hdrc_imx.h
View file

@ -22,5 +22,6 @@ struct imx_usbmisc_data {
int imx_usbmisc_init(struct imx_usbmisc_data *);
int imx_usbmisc_init_post(struct imx_usbmisc_data *);
int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *, bool);
#endif /* __DRIVER_USB_CHIPIDEA_CI_HDRC_IMX_H */

52
drivers/usb/chipidea/usbmisc_imx.c
View file

@ -55,6 +55,10 @@
#define MX53_USB_PLL_DIV_24_MHZ 0x01
#define MX6_BM_OVER_CUR_DIS BIT(7)
#define MX6_BM_WAKEUP_ENABLE BIT(10)
#define MX6_BM_ID_WAKEUP BIT(16)
#define MX6_BM_VBUS_WAKEUP BIT(17)
#define MX6_BM_WAKEUP_INTR BIT(31)
#define VF610_OVER_CUR_DIS BIT(7)
@ -63,6 +67,8 @@ struct usbmisc_ops {
int (*init)(struct imx_usbmisc_data *data);
/* It's called once after adding a usb device */
int (*post)(struct imx_usbmisc_data *data);
/* It's called when we need to enable/disable usb wakeup */
int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
};
struct imx_usbmisc {
@ -202,6 +208,35 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
return 0;
}
static int usbmisc_imx6q_set_wakeup
(struct imx_usbmisc_data *data, bool enabled)
{
struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
unsigned long flags;
u32 val;
u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
int ret = 0;
if (data->index > 3)
return -EINVAL;
spin_lock_irqsave(&usbmisc->lock, flags);
val = readl(usbmisc->base + data->index * 4);
if (enabled) {
val |= wakeup_setting;
writel(val, usbmisc->base + data->index * 4);
} else {
if (val & MX6_BM_WAKEUP_INTR)
pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
val &= ~wakeup_setting;
writel(val, usbmisc->base + data->index * 4);
}
spin_unlock_irqrestore(&usbmisc->lock, flags);
return ret;
}
static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
{
struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
@ -219,6 +254,8 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
spin_unlock_irqrestore(&usbmisc->lock, flags);
}
usbmisc_imx6q_set_wakeup(data, false);
return 0;
}
@ -256,6 +293,7 @@ static const struct usbmisc_ops imx53_usbmisc_ops = {
};
static const struct usbmisc_ops imx6q_usbmisc_ops = {
.set_wakeup = usbmisc_imx6q_set_wakeup,
.init = usbmisc_imx6q_init,
};
@ -291,6 +329,20 @@ int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
}
EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
{
struct imx_usbmisc *usbmisc;
if (!data)
return 0;
usbmisc = dev_get_drvdata(data->dev);
if (!usbmisc->ops->set_wakeup)
return 0;
return usbmisc->ops->set_wakeup(data, enabled);
}
EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
static const struct of_device_id usbmisc_imx_dt_ids[] = {
{
.compatible = "fsl,imx25-usbmisc",