usb: chipidea: imx: add usb support for imx7d

[deliverable/linux.git] / drivers / usb / chipidea / usbmisc_imx.c

diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index 5ddab30ee240937d15d54cda0ad6642ea02247b5..f3a4753e0e18d845daa2d7d6fc1386ae6d3e210d 100644 (file)
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -72,6 +72,14 @@
 
 #define VF610_OVER_CUR_DIS             BIT(7)
 
+#define MX7D_USBNC_USB_CTRL2           0x4
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK       0x3
+#define MX7D_USB_VBUS_WAKEUP_SOURCE(v)         (v << 0)
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS       MX7D_USB_VBUS_WAKEUP_SOURCE(0)
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID     MX7D_USB_VBUS_WAKEUP_SOURCE(1)
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID     MX7D_USB_VBUS_WAKEUP_SOURCE(2)
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END   MX7D_USB_VBUS_WAKEUP_SOURCE(3)
+
 struct usbmisc_ops {
        /* It's called once when probe a usb device */
        int (*init)(struct imx_usbmisc_data *data);
@@ -324,6 +332,55 @@ static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
        return 0;
 }
 
+static int usbmisc_imx7d_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);
+
+       spin_lock_irqsave(&usbmisc->lock, flags);
+       val = readl(usbmisc->base);
+       if (enabled) {
+               writel(val | wakeup_setting, usbmisc->base);
+       } else {
+               if (val & MX6_BM_WAKEUP_INTR)
+                       dev_dbg(data->dev, "wakeup int\n");
+               writel(val & ~wakeup_setting, usbmisc->base);
+       }
+       spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+       return 0;
+}
+
+static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
+{
+       struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+       unsigned long flags;
+       u32 reg;
+
+       if (data->index >= 1)
+               return -EINVAL;
+
+       spin_lock_irqsave(&usbmisc->lock, flags);
+       if (data->disable_oc) {
+               reg = readl(usbmisc->base);
+               writel(reg | MX6_BM_OVER_CUR_DIS, usbmisc->base);
+       }
+
+       reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
+       reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
+       writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
+                usbmisc->base + MX7D_USBNC_USB_CTRL2);
+       spin_unlock_irqrestore(&usbmisc->lock, flags);
+
+       usbmisc_imx7d_set_wakeup(data, false);
+
+       return 0;
+}
+
 static const struct usbmisc_ops imx25_usbmisc_ops = {
        .init = usbmisc_imx25_init,
        .post = usbmisc_imx25_post,
@@ -351,6 +408,11 @@ static const struct usbmisc_ops imx6sx_usbmisc_ops = {
        .init = usbmisc_imx6sx_init,
 };
 
+static const struct usbmisc_ops imx7d_usbmisc_ops = {
+       .init = usbmisc_imx7d_init,
+       .set_wakeup = usbmisc_imx7d_set_wakeup,
+};
+
 int imx_usbmisc_init(struct imx_usbmisc_data *data)
 {
        struct imx_usbmisc *usbmisc;