diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs/rcar3.c')
| -rw-r--r-- | drivers/usb/renesas_usbhs/rcar3.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c index c929d296c77b..d0ea4ff89622 100644 --- a/drivers/usb/renesas_usbhs/rcar3.c +++ b/drivers/usb/renesas_usbhs/rcar3.c @@ -27,6 +27,7 @@ * Remarks: bit[31:11] and bit[9:6] should be 0 */ #define UGCTRL2_RESERVED_3 0x00000001 /* bit[3:0] should be B'0001 */ +#define UGCTRL2_USB0SEL_EHCI 0x00000010 #define UGCTRL2_USB0SEL_HSUSB 0x00000020 #define UGCTRL2_USB0SEL_OTG 0x00000030 #define UGCTRL2_VBUSSEL 0x00000400 @@ -44,13 +45,25 @@ static u32 usbhs_read32(struct usbhs_priv *priv, u32 reg) return ioread32(priv->base + reg); } +static void usbhs_rcar3_set_ugctrl2(struct usbhs_priv *priv, u32 val) +{ + usbhs_write32(priv, UGCTRL2, val | UGCTRL2_RESERVED_3); +} + +static void usbhs_rcar3_set_usbsel(struct usbhs_priv *priv, bool ehci) +{ + if (ehci) + usbhs_rcar3_set_ugctrl2(priv, UGCTRL2_USB0SEL_EHCI); + else + usbhs_rcar3_set_ugctrl2(priv, UGCTRL2_USB0SEL_HSUSB); +} + static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, void __iomem *base, int enable) { struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); - usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG | - UGCTRL2_VBUSSEL); + usbhs_rcar3_set_ugctrl2(priv, UGCTRL2_USB0SEL_OTG | UGCTRL2_VBUSSEL); if (enable) { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); @@ -70,11 +83,14 @@ static int usbhs_rcar3_power_and_pll_ctrl(struct platform_device *pdev, struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); u32 val; int timeout = 1000; + bool is_host = false; if (enable) { usbhs_write32(priv, UGCTRL, 0); /* release PLLRESET */ - usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | - UGCTRL2_USB0SEL_HSUSB); + if (priv->edev) + is_host = extcon_get_state(priv->edev, EXTCON_USB_HOST); + + usbhs_rcar3_set_usbsel(priv, is_host); usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); do { @@ -96,6 +112,16 @@ static int usbhs_rcar3_get_id(struct platform_device *pdev) return USBHS_GADGET; } +static int usbhs_rcar3_notifier(struct notifier_block *nb, unsigned long event, + void *data) +{ + struct usbhs_priv *priv = container_of(nb, struct usbhs_priv, nb); + + usbhs_rcar3_set_usbsel(priv, !!event); + + return NOTIFY_DONE; +} + const struct renesas_usbhs_platform_callback usbhs_rcar3_ops = { .power_ctrl = usbhs_rcar3_power_ctrl, .get_id = usbhs_rcar3_get_id, @@ -104,4 +130,5 @@ const struct renesas_usbhs_platform_callback usbhs_rcar3_ops = { const struct renesas_usbhs_platform_callback usbhs_rcar3_with_pll_ops = { .power_ctrl = usbhs_rcar3_power_and_pll_ctrl, .get_id = usbhs_rcar3_get_id, + .notifier = usbhs_rcar3_notifier, }; |