int usb_cpu_init(void)
{
/* enable psc for usb2.0 */
lpsc_on(DAVINCI_LPSC_USB20);
/* enable psc for usb1.0 */
lpsc_on(DAVINCI_LPSC_USB11);
/* start the on-chip usb phy and its pll */
if (usb_phy_on())
return 0;
return 1;
}
void usb_drv_init(void)
{
logf("usb_drv_init() !!!!\n");
if (!initialized)
{
int i;
for (i = 0; i < USB_NUM_EPS; i++)
{
semaphore_init(&endpoints[i][0].complete, 1, 0);
semaphore_init(&endpoints[i][1].complete, 1, 0);
}
initialized = true;
}
usb_enable_pll();
/* we have external power, so boost cpu */
cpu_boost(1);
/* length regulator: normal operation */
ascodec_write(AS3514_CVDD_DCDC3, ascodec_read(AS3514_CVDD_DCDC3) | 1<<2);
/* AHB part */
bitset32(&CGU_PERI, CGU_USB_CLOCK_ENABLE);
/* reset AHB */
CCU_SRC = CCU_SRC_USB_AHB_EN;
CCU_SRL = CCU_SRL_MAGIC_NUMBER;
mdelay(1);
CCU_SRC = CCU_SRL = 0;
USB_GPIO_CSR = USB_GPIO_TX_ENABLE_N
| USB_GPIO_TX_BIT_STUFF_EN
| USB_GPIO_XO_ON
| USB_GPIO_CLK_SEL10; /* 0x06180000; */
/* bug workaround according to linux patch */
USB_DEV_CFG = (USB_DEV_CFG & ~3) | 1; /* full speed */
/* enable soft disconnect */
USB_DEV_CTRL |= USB_DEV_CTRL_SOFT_DISCONN;
usb_phy_on();
usb_phy_suspend();
USB_DEV_CTRL |= USB_DEV_CTRL_SOFT_DISCONN;
/* We don't care about SVC or SOF events */
/* Right now we don't handle suspend, so mask those too */
USB_DEV_INTR_MASK = USB_DEV_INTR_SVC |
USB_DEV_INTR_SOF |
USB_DEV_INTR_USB_SUSPEND |
USB_DEV_INTR_EARLY_SUSPEND;
USB_DEV_CFG = USB_DEV_CFG_STAT_ACK |
USB_DEV_CFG_UNI_DIR |
USB_DEV_CFG_PI_16BIT |
USB_DEV_CFG_HS |
USB_DEV_CFG_SELF_POWERED |
USB_DEV_CFG_CSR_PRG |
USB_DEV_CFG_PHY_ERR_DETECT;
USB_DEV_CTRL = USB_DEV_CTRL_DESC_UPDATE |
USB_DEV_CTRL_THRES_ENABLE |
USB_DEV_CTRL_BURST_ENABLE |
USB_DEV_CTRL_BLEN_8DWORDS |
USB_DEV_CTRL_TLEN_8THMAXSIZE;
USB_DEV_EP_INTR_MASK &= ~((1<<0) | (1<<16)); /* ep 0 */
reset_endpoints(1);
/* clear pending interrupts */
USB_DEV_EP_INTR = 0xffffffff;
USB_DEV_INTR = 0xffffffff;
VIC_INT_ENABLE = INTERRUPT_USB;
usb_phy_resume();
USB_DEV_CTRL &= ~USB_DEV_CTRL_SOFT_DISCONN;
USB_GPIO_CSR = USB_GPIO_TX_ENABLE_N
| USB_GPIO_TX_BIT_STUFF_EN
| USB_GPIO_XO_ON
| USB_GPIO_HS_INTR
| USB_GPIO_CLK_SEL10; /* 0x06180000; */
tick_add_task(usb_tick);
usb_enum_timeout = HZ; /* one second timeout for enumeration */
}