static void tahvo_usb_irq_work(struct work_struct *work)
{
struct tahvo_usb *tu = container_of(work, struct tahvo_usb, irq_work);
mutex_lock(&tu->serialize);
check_vbus_state(tu);
mutex_unlock(&tu->serialize);
}
static irqreturn_t tahvo_usb_vbus_interrupt(int irq, void *_tu)
{
struct tahvo_usb *tu = _tu;
check_vbus_state(tu);
return IRQ_HANDLED;
}
static irqreturn_t tahvo_usb_vbus_interrupt(int irq, void *_tu)
{
struct tahvo_usb *tu = _tu;
mutex_lock(&tu->serialize);
check_vbus_state(tu);
mutex_unlock(&tu->serialize);
return IRQ_HANDLED;
}
static void tahvo_usb_become_peripheral(struct tahvo_usb *tu)
{
struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);
extcon_set_cable_state(&tu->extcon, "USB-HOST", false);
/* Power up transceiver and set it in USB peripheral mode */
retu_write(rdev, TAHVO_REG_USBR, USBR_SLAVE_CONTROL | USBR_REGOUT |
USBR_NSUSPEND | USBR_SLAVE_SW);
tu->phy.state = OTG_STATE_B_IDLE;
check_vbus_state(tu);
}
static void tahvo_usb_become_host(struct tahvo_usb *tu)
{
struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);
extcon_set_cable_state(&tu->extcon, "USB-HOST", true);
/* Power up the transceiver in USB host mode */
retu_write(rdev, TAHVO_REG_USBR, USBR_REGOUT | USBR_NSUSPEND |
USBR_MASTER_SW2 | USBR_MASTER_SW1);
tu->phy.state = OTG_STATE_A_IDLE;
check_vbus_state(tu);
}
static void tahvo_usb_become_peripheral(struct tahvo_usb *tu)
{
/* Clear system and transceiver controlled bits
* and enable ID to mark peripheral mode and
* BSESSEND to mark no Vbus */
omap_otg_init();
OTG_CTRL_REG = (OTG_CTRL_REG & ~(OTG_CTRL_XCVR_MASK|OTG_CTRL_SYS_MASK|OTG_BSESSVLD))
| OTG_ID | OTG_BSESSEND;
/* Power up transceiver and set it in USB perhiperal mode */
tahvo_write_reg(TAHVO_REG_USBR, USBR_SLAVE_CONTROL | USBR_REGOUT | USBR_NSUSPEND | USBR_SLAVE_SW);
tu->otg.state = OTG_STATE_B_IDLE;
check_vbus_state(tu);
}
static void tahvo_usb_become_host(struct tahvo_usb *tu)
{
u32 l;
/* Clear system and transceiver controlled bits
* also mark the A-session is always valid */
omap_otg_init();
l = OTG_CTRL_REG;
l &= ~(OTG_CTRL_XCVR_MASK|OTG_CTRL_SYS_MASK);
l |= OTG_ASESSVLD;
OTG_CTRL_REG = l;
/* Power up the transceiver in USB host mode */
tahvo_write_reg(TAHVO_REG_USBR, USBR_REGOUT | USBR_NSUSPEND |
USBR_MASTER_SW2 | USBR_MASTER_SW1);
tu->otg.state = OTG_STATE_A_IDLE;
check_vbus_state(tu);
}