diff options
Diffstat (limited to 'drivers/usb/chipidea/usbmisc_imx.c')
| -rw-r--r-- | drivers/usb/chipidea/usbmisc_imx.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index f0f8edc078d6..a8dabfff463e 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -97,6 +97,8 @@ #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) +#define MX7D_USB_TERMSEL_OVERRIDE BIT(4) +#define MX7D_USB_TERMSEL_OVERRIDE_EN BIT(5) #define OTG_DRVVBUS0 BIT(16) #define OTG_ADP_PRBENB0 BIT(13) @@ -144,6 +146,9 @@ struct usbmisc_ops { bool (*adp_sense_connection)(struct imx_usbmisc_data *data); /* Check if it's a device attach or dettach event */ bool (*adp_attach_event)(struct imx_usbmisc_data *data); + /* override UTMI termination select */ + int (*term_select_override)(struct imx_usbmisc_data *data, + bool enable, int val); }; struct imx_usbmisc { @@ -736,6 +741,37 @@ static int usbmisc_imx7d_power_lost_check(struct imx_usbmisc_data *data) return 0; } +static int usbmisc_term_select_override(struct imx_usbmisc_data *data, + bool enable, int val) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&usbmisc->lock, flags); + + reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + if (enable) { + if (val) + writel(reg | MX7D_USB_TERMSEL_OVERRIDE, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + else + writel(reg & ~MX7D_USB_TERMSEL_OVERRIDE, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + + reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + writel(reg | MX7D_USB_TERMSEL_OVERRIDE_EN, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + } else { + writel(reg & ~MX7D_USB_TERMSEL_OVERRIDE_EN, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + } + + spin_unlock_irqrestore(&usbmisc->lock, flags); + + return 0; +} + static const struct usbmisc_ops imx25_usbmisc_ops = { .init = usbmisc_imx25_init, .post = usbmisc_imx25_post, @@ -779,6 +815,7 @@ static const struct usbmisc_ops imx7d_usbmisc_ops = { .is_sense_int = usbmisc_otg_adp_is_sense_int, .adp_sense_connection = usbmisc_otg_adp_sense_connection, .adp_attach_event = usbmisc_otg_adp_is_attach_event, + .term_select_override = usbmisc_term_select_override, }; int imx_usbmisc_init(struct imx_usbmisc_data *data) @@ -963,6 +1000,21 @@ bool imx_usbmisc_adp_attach_event(struct imx_usbmisc_data *data) } EXPORT_SYMBOL_GPL(imx_usbmisc_adp_attach_event); +int imx_usbmisc_term_select_override(struct imx_usbmisc_data *data, + bool enable, int val) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->term_select_override) + return 0; + return usbmisc->ops->term_select_override(data, enable, val); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_term_select_override); + static const struct of_device_id usbmisc_imx_dt_ids[] = { { .compatible = "fsl,imx25-usbmisc", |