static void usb_reset(struct usb_info *ui)
{
unsigned long flags;
printk(KERN_INFO "hsusb: reset controller\n");
spin_lock_irqsave(&ui->lock, flags);
ui->running = 0;
spin_unlock_irqrestore(&ui->lock, flags);
/* To prevent phantom packets being received by the usb core on
* some devices, put the controller into reset prior to
* resetting the phy. */
writel(2, USB_USBCMD);
msleep(10);
#if 0
/* we should flush and shutdown cleanly if already running */
writel(0xffffffff, USB_ENDPTFLUSH);
msleep(2);
#endif
if (usb_phy_reset(ui) < 0)
pr_err("%s: Phy reset failed!\n", __func__);
msleep(100);
/* toggle non-driving mode after phy reset to ensure that
* we cause a disconnect event to the host */
ulpi_write(ui, 0x18, 0x6);
msleep(1);
ulpi_write(ui, 0x8, 0x5);
msleep(1);
/* RESET */
writel(2, USB_USBCMD);
msleep(10);
#ifdef CONFIG_ARCH_MSM7X00A
/* INCR4 BURST mode */
writel(0x01, USB_SBUSCFG);
#else
/* bursts of unspecified length. */
writel(0, USB_AHBBURST);
/* Use the AHB transactor */
writel(0, USB_AHBMODE);
#endif
/* select DEVICE mode */
writel(0x12, USB_USBMODE);
msleep(1);
/* select ULPI phy */
writel(0x80000000, USB_PORTSC);
ulpi_init(ui);
writel(ui->dma, USB_ENDPOINTLISTADDR);
configure_endpoints(ui);
/* marking us offline will cause ept queue attempts to fail */
ui->online = 0;
/* terminate any pending transactions */
flush_all_endpoints(ui);
if (ui->driver) {
printk(KERN_INFO "usb: notify offline\n");
ui->driver->disconnect(&ui->gadget);
}
/* enable interrupts */
writel(STS_URI | STS_SLI | STS_UI | STS_PCI, USB_USBINTR);
/* go to RUN mode (D+ pullup enable) */
msm72k_pullup(&ui->gadget, 1);
spin_lock_irqsave(&ui->lock, flags);
ui->running = 1;
spin_unlock_irqrestore(&ui->lock, flags);
}
static void usb_reset(struct usb_info *ui)
{
unsigned long flags;
unsigned cfg_val;
unsigned otgsc;
INFO("msm72k_udc: reset controller\n");
spin_lock_irqsave(&ui->lock, flags);
ui->running = 0;
spin_unlock_irqrestore(&ui->lock, flags);
#if 0
/* we should flush and shutdown cleanly if already running */
writel(0xffffffff, USB_ENDPTFLUSH);
msleep(2);
#endif
otgsc = readl(USB_OTGSC);
/* RESET */
writel(2, USB_USBCMD);
msleep(10);
if (ui->phy_reset)
ui->phy_reset();
/* select DEVICE mode */
writel(0x12, USB_USBMODE);
msleep(1);
/* select ULPI phy */
writel(0x80000000, USB_PORTSC);
/* electrical compliance failure in eye-diagram tests
* were observed w/ integrated phy. To avoid failure
* raise signal amplitude to 400mv
*/
cfg_val = ulpi_read(ui, ULPI_CONFIG_REG);
cfg_val |= ULPI_AMPLITUDE_MAX;
ulpi_write(ui, cfg_val, ULPI_CONFIG_REG);
/* fix potential usb stability issues with "integrated phy"
* by enabling unspecified length of INCR burst and using
* the AHB master interface of the AHB2AHB transactor
*/
writel(0, USB_AHB_BURST);
writel(0, USB_AHB_MODE);
ulpi_init(ui);
writel(ui->dma, USB_ENDPOINTLISTADDR);
configure_endpoints(ui);
/* marking us offline will cause ept queue attempts to fail */
ui->online = 0;
/* terminate any pending transactions */
flush_all_endpoints(ui);
if (ui->driver) {
printk(KERN_INFO "usb: notify offline\n");
ui->driver->disconnect(&ui->gadget);
}
/* enable interrupts */
writel(otgsc, USB_OTGSC);
writel(STS_URI | STS_SLI | STS_UI | STS_PCI, USB_USBINTR);
spin_lock_irqsave(&ui->lock, flags);
ui->running = 1;
spin_unlock_irqrestore(&ui->lock, flags);
}
