static void __exit twl4030_usb_exit(void)
{
struct twl4030_usb *twl = the_transceiver;
int val;
usb_irq_disable();
free_irq(twl->irq, twl);
/* set transceiver mode to power on defaults */
twl4030_usb_set_mode(twl, -1);
/* autogate 60MHz ULPI clock,
* clear dpll clock request for i2c access,
* disable 32KHz
*/
val = twl4030_usb_read(PHY_CLK_CTRL);
if (val >= 0) {
val |= PHY_CLK_CTRL_CLOCKGATING_EN;
val &= ~(PHY_CLK_CTRL_CLK32K_EN | REQ_PHY_DPLL_CLK);
twl4030_usb_write(PHY_CLK_CTRL, (u8)val);
}
/* disable complete OTG block */
twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
twl4030_phy_power(twl, 0);
kfree(twl);
}
int usb_event_disable(maxusb_event_t event)
{
if (event >= MAXUSB_NUM_EVENTS) {
return -1;
}
usb_irq_disable(event);
callback[event].func = NULL;
callback[event].cbdata = NULL;
return 0;
}
static int __init twl4030_usb_init(void)
{
struct twl4030_usb *twl;
int status;
if (the_transceiver)
return 0;
twl = kzalloc(sizeof *twl, GFP_KERNEL);
if (!twl)
return 0;
the_transceiver = twl;
twl->irq = TWL4030_PWRIRQ_USB_PRES;
twl->otg.set_host = twl4030_set_host;
twl->otg.set_peripheral = twl4030_set_peripheral;
twl->otg.set_suspend = twl4030_set_suspend;
usb_irq_disable();
status = request_irq(twl->irq, twl4030_usb_irq, 0, "twl4030_usb", twl);
if (status < 0) {
printk(KERN_DEBUG "can't get IRQ %d, err %d\n",
twl->irq, status);
kfree(twl);
return -ENODEV;
}
#if defined(CONFIG_TWL4030_USB_HS_ULPI)
hs_usb_init(twl);
#endif
twl4030_usb_ldo_init(twl);
twl4030_phy_power(twl, 1);
twl4030_i2c_access(1);
twl4030_usb_set_mode(twl, twl->usb_mode);
if (twl->usb_mode == T2_USB_MODE_ULPI)
twl4030_i2c_access(0);
twl->asleep = 0;
if (twl->usb_mode == T2_USB_MODE_ULPI)
twl4030_phy_suspend(1);
otg_set_transceiver(&twl->otg);
printk(KERN_INFO "Initialized TWL4030 USB module\n");
return 0;
}
static void twl4030_phy_suspend(int controller_off)
{
struct twl4030_usb *twl = the_transceiver;
if (controller_off)
usb_irq_disable();
if (twl->asleep)
return;
if (!controller_off)
/* enable rising edge interrupt to detect cable attach */
usb_irq_enable(1, 0);
twl4030_phy_power(twl, 0);
twl->asleep = 1;
return;
}