static int twl4030_set_host(struct otg_transceiver *x, struct usb_bus *host)
{
struct twl4030_usb *twl;
if (!x)
return -ENODEV;
twl = xceiv_to_twl(x);
if (!host) {
omap_writew(0, OTG_IRQ_EN);
twl4030_phy_suspend(twl, 1);
twl->otg.host = NULL;
return -ENODEV;
}
twl->otg.host = host;
twl4030_phy_resume(twl);
twl4030_usb_set_bits(twl, TWL4030_OTG_CTRL,
TWL4030_OTG_CTRL_DMPULLDOWN
| TWL4030_OTG_CTRL_DPPULLDOWN);
twl4030_usb_set_bits(twl, FUNC_CTRL, FUNC_CTRL_SUSPENDM);
twl4030_usb_set_bits(twl, TWL4030_OTG_CTRL, TWL4030_OTG_CTRL_DRVVBUS);
return 0;
}
static int twl4030_set_host(struct otg_transceiver *xceiv, struct usb_bus *host)
{
struct twl4030_usb *twl = xceiv_to_twl(xceiv);
if (!xceiv)
return -ENODEV;
if (!host) {
OTG_IRQ_EN_REG = 0;
twl4030_phy_suspend(1);
twl->otg.host = NULL;
return -ENODEV;
}
twl->otg.host = host;
twl4030_phy_resume();
twl4030_usb_set_bits(twl, OTG_CTRL,
OTG_CTRL_DMPULLDOWN | OTG_CTRL_DPPULLDOWN);
twl4030_usb_set_bits(twl, USB_INT_EN_RISE, USB_INT_IDGND);
twl4030_usb_set_bits(twl, USB_INT_EN_FALL, USB_INT_IDGND);
twl4030_usb_set_bits(twl, FUNC_CTRL, FUNC_CTRL_SUSPENDM);
twl4030_usb_set_bits(twl, OTG_CTRL, OTG_CTRL_DRVVBUS);
return 0;
}
static int twl4030_set_peripheral(struct otg_transceiver *xceiv,
struct usb_gadget *gadget)
{
struct twl4030_usb *twl = xceiv_to_twl(xceiv);
if (!xceiv)
return -ENODEV;
if (!gadget) {
OTG_IRQ_EN_REG = 0;
twl4030_phy_suspend(1);
twl->otg.gadget = NULL;
return -ENODEV;
}
twl->otg.gadget = gadget;
twl4030_phy_resume();
OTG_CTRL_REG = (OTG_CTRL_REG & OTG_CTRL_MASK
& ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS))
| OTG_ID;
twl->otg.state = OTG_STATE_B_IDLE;
twl4030_usb_set_bits(twl, USB_INT_EN_RISE,
USB_INT_SESSVALID | USB_INT_VBUSVALID);
twl4030_usb_set_bits(twl, USB_INT_EN_FALL,
USB_INT_SESSVALID | USB_INT_VBUSVALID);
return 0;
}
int twl4030_set_usb_pullup(bool pullup)
{
TRACE_ENTRY;
if (pullup) {
twl4030_usb_clear_bits(OTG_CTRL, DPPULLDOWN);
twl4030_usb_set_bits(FUNC_CTRL, TERMSELECT);
} else {
twl4030_usb_clear_bits(FUNC_CTRL, TERMSELECT);
twl4030_usb_set_bits(OTG_CTRL, DPPULLDOWN);
}
return 0;
}
static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode)
{
unsigned char reg;
twl->usb_mode = mode;
switch (mode) {
case T2_USB_MODE_ULPI:
twl4030_usb_clear_bits(twl, ULPI_IFC_CTRL,
ULPI_IFC_CTRL_CARKITMODE);
twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
twl4030_usb_clear_bits(twl, ULPI_FUNC_CTRL,
ULPI_FUNC_CTRL_XCVRSEL_MASK |
ULPI_FUNC_CTRL_OPMODE_MASK);
//&*&*&*QY_20110706, fix low-speed otg
reg = twl4030_usb_read(twl, FUNC_CTRL);
printk("[OTG]OTG FUNC_CTRL=0x%x \n",reg);
//&*&*&*QY_20110706
break;
case -1:
/* FIXME: power on defaults */
break;
default:
dev_err(twl->dev, "unsupported T2 transceiver mode %d\n",
mode);
break;
};
}
static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode)
{
twl->usb_mode = mode;
switch (mode) {
case T2_USB_MODE_ULPI:
twl4030_usb_clear_bits(twl, IFC_CTRL, IFC_CTRL_CARKITMODE);
twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
twl4030_usb_clear_bits(twl, FUNC_CTRL,
FUNC_CTRL_XCVRSELECT_MASK |
FUNC_CTRL_OPMODE_MASK);
break;
case -1:
/* FIXME: power on defaults */
break;
default:
dev_err(twl->dev, "unsupported T2 transceiver mode %d\n",
mode);
break;
};
}
static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode)
{
twl->usb_mode = mode;
switch (mode) {
case T2_USB_MODE_ULPI:
twl4030_usb_clear_bits(twl, IFC_CTRL, IFC_CTRL_CARKITMODE);
twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
twl4030_usb_clear_bits(twl, FUNC_CTRL,
FUNC_CTRL_XCVRSELECT_MASK |
FUNC_CTRL_OPMODE_MASK);
break;
/*
case T2_USB_MODE_CEA2011_3PIN:
twl4030_cea2011_3_pin_FS_setup(twl);
break;
*/
default:
/* FIXME: power on defaults */
break;
};
}
int twl4030_usb_reset(void)
{
TRACE_ENTRY;
#if 0
twl4030_usb_clear_bits(OTG_CTRL, DMPULLDOWN | DPPULLDOWN);
twl4030_usb_clear_bits(USB_INT_EN_RISE, ~0);
twl4030_usb_clear_bits(USB_INT_EN_FALL, ~0);
twl4030_usb_clear_bits(MCPC_IO_CTRL, ~TXDTYP);
twl4030_usb_set_bits(MCPC_IO_CTRL, TXDTYP);
twl4030_usb_clear_bits(OTHER_FUNC_CTRL, (BDIS_ACON_EN | FIVEWIRE_MODE));
twl4030_usb_clear_bits(OTHER_IFC_CTRL, ~0);
twl4030_usb_clear_bits(OTHER_INT_EN_RISE, ~0);
twl4030_usb_clear_bits(OTHER_INT_EN_FALL, ~0);
twl4030_usb_clear_bits(OTHER_IFC_CTRL2, ~0);
twl4030_usb_clear_bits(REG_CTRL_EN, ULPI_I2C_CONFLICT_INTEN);
twl4030_usb_clear_bits(OTHER_FUNC_CTRL2, VBAT_TIMER_EN);
#endif
/* Enable writing to power configuration registers */
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, PROTECT_KEY, 0xC0);
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, PROTECT_KEY, 0x0C);
/* put VUSB3V1 LDO in active state */
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB_DEDICATED2, 0);
/* input to VUSB3V1 LDO is from VBAT, not VBUS */
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB_DEDICATED1, 0x14);
/* turn on 3.1V regulator */
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB3V1_DEV_GRP, 0x20);
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB3V1_TYPE, 0);
/* turn on 1.5V regulator */
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB1V5_DEV_GRP, 0x20);
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB1V5_TYPE, 0);
/* turn on 1.8V regulator */
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB1V8_DEV_GRP, 0x20);
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, VUSB1V8_TYPE, 0);
/* disable access to power configuration registers */
i2c_write_reg(TWL_I2C_BUS, TWL_PM_RECEIVER_ADDR, PROTECT_KEY, 0);
/* turn on the phy */
uint8_t pwr = twl4030_usb_read(PHY_PWR_CTRL);
pwr &= ~PHYPWD;
twl4030_usb_write(PHY_PWR_CTRL, pwr);
twl4030_usb_write(PHY_CLK_CTRL,
twl4030_usb_read(PHY_CLK_CTRL) |
(CLOCKGATING_EN | CLK32K_EN));
/* set DPLL i2c access mode */
twl4030_i2c_access(true);
/* set ulpi mode */
twl4030_usb_clear_bits(IFC_CTRL, CARKITMODE);
twl4030_usb_set_bits(POWER_CTRL, OTG_ENAB);
twl4030_usb_write(FUNC_CTRL, XCVRSELECT_HS); // set high speed mode
// twl4030_usb_write(FUNC_CTRL, XCVRSELECT_FS); // set full speed mode
twl4030_i2c_access(false);
return 0;
}
