Hi,
On Friday 19 July 2013 06:04 PM, George Cherian wrote:
> on/off USB PHY for AM335X
>
> Add APIs to
> -power on/off USB PHY for AM335X
> -enable/disable PHY wakeup.
>
> This API will be called from phy-amxxxx-usb driver.
>
> Signed-off-by: George Cherian <george.cherian@xxxxxx>
> ---
> drivers/usb/phy/phy-omap-control.c | 67 ++++++++++++++++++++++++++++++++++++
> include/linux/usb/omap_control_usb.h | 24 +++++++++++++
> 2 files changed, 91 insertions(+)
>
> diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c
> index 1419ced..4f2502c 100644
> --- a/drivers/usb/phy/phy-omap-control.c
> +++ b/drivers/usb/phy/phy-omap-control.c
> @@ -46,6 +46,73 @@ struct device *omap_get_control_dev(void)
> EXPORT_SYMBOL_GPL(omap_get_control_dev);
>
> /**
> + * omap_control_am335x_phy_wkup - PHY wakeup on/off using control
> + * module
> + * @dev: the control module device
> + * @on: 0 to off and 1 to on PHY wakeup feature
%s/off/disable %s/on/enable
> + * @id: phy id 0 or 1 for phy instance 0 and 1 repectively
> + *
> + * AMXXXX PHY driver should call this API to enable or disable PHY wakeup.
> + */
> +void omap_control_am335x_phy_wkup(struct device *dev, bool on, u8 id)
> +{
> + u32 val;
> + u32 *phy_wkup_reg;
> + struct omap_control_usb *control_usb = dev_get_drvdata(dev);
> +
> + if (control_usb->type != OMAP_CTRL_DEV_TYPE3 || id < 0 || id > 1)
> + return;
> +
> + phy_wkup_reg = control_usb->dev_conf + AM335X_USB_WKUP_OFFSET;
> + val = readl(phy_wkup_reg);
> +
> + if (on)
> + val |= id ? AM335X_USB1_WKUP_CTRL_ENABLE :
> + AM335X_USB0_WKUP_CTRL_ENABLE;
> + else
> + val &= id ? ~AM335X_USB1_WKUP_CTRL_ENABLE :
> + ~AM335X_USB0_WKUP_CTRL_ENABLE;
> +
> +
You really need two blank spaces here?
> + writel(val, phy_wkup_reg);
> +}
> +EXPORT_SYMBOL_GPL(omap_control_am335x_phy_wkup);
> +
> +/**
> + * omap_control_am335x_phy_power - power on/off the serializer using control
> + * module
> + * @dev: the control module device
> + * @on: 0 to off and 1 to on based on powering on or off the PHY
> + * @id: phy id 0 or 1 for phy instance 0 and 1 repectively
> + *
> + * AMXXXX PHY driver should call this API to power on or off the PHY.
> + */
> +void omap_control_am335x_phy_power(struct device *dev, bool on, u8 id)
> +{
> + u32 val;
> + u32 *phy_pwr_reg;
> + struct omap_control_usb *control_usb = dev_get_drvdata(dev);
> +
> + if (control_usb->type != OMAP_CTRL_DEV_TYPE3 || id < 0 || id > 1)
> + return;
> +
> + phy_pwr_reg = GET_PHY_POWER_REG(control_usb->dev_conf, id);
> + val = readl(phy_pwr_reg);
> +
> + if (on) {
> + val &= ~(AM335X_USBPHY_CM_PWRDN | AM335X_USBPHY_OTG_PWRDN);
> + val |= AM335X_USBPHY_OTGVDET_EN |
> + AM335X_USBPHY_OTGSESSEND_EN;
> + } else
> + val |= AM335X_USBPHY_CM_PWRDN | AM335X_USBPHY_OTG_PWRDN;
> +
> +
ditto.
> + writel(val, phy_pwr_reg);
> +}
> +EXPORT_SYMBOL_GPL(omap_control_am335x_phy_power);
> +
> +
ditto.
> +/**
> * omap_control_usb3_phy_power - power on/off the serializer using control
> * module
> * @dev: the control module device
> diff --git a/include/linux/usb/omap_control_usb.h b/include/linux/usb/omap_control_usb.h
> index 27b5b8c..a92b417 100644
> --- a/include/linux/usb/omap_control_usb.h
> +++ b/include/linux/usb/omap_control_usb.h
> @@ -45,6 +45,7 @@ enum omap_control_usb_mode {
> /* To differentiate ctrl module IP having either mailbox or USB3 PHY power */
> #define OMAP_CTRL_DEV_TYPE1 0x1
> #define OMAP_CTRL_DEV_TYPE2 0x2
> +#define OMAP_CTRL_DEV_TYPE3 0x3
>
> #define OMAP_CTRL_DEV_PHY_PD BIT(0)
>
> @@ -63,10 +64,23 @@ enum omap_control_usb_mode {
> #define OMAP_CTRL_USB3_PHY_TX_RX_POWERON 0x3
> #define OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF 0x0
>
> +#define GET_PHY_POWER_REG(base, id) ((u32 *)base + (id * 2))
how about
#define GET_PHY_POWER_REG(base, id) ((u32 *)(base) + ((id) * 2))
> +#define AM335X_USBPHY_CM_PWRDN (1 << 0)
> +#define AM335X_USBPHY_OTG_PWRDN (1 << 1)
> +#define AM335X_USBPHY_OTGVDET_EN (1 << 19)
> +#define AM335X_USBPHY_OTGSESSEND_EN (1 << 20)
> +#define AM335X_USB_WKUP_OFFSET 0xA
> +#define AM335X_USB0_WKUP_CTRL_ENABLE (1 << 0)
> +#define AM335X_USB1_WKUP_CTRL_ENABLE (1 << 8)
> +
> +
> +
too many blank lines...
Thanks
Kishon
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