static int msm_otg_set_host(struct otg_transceiver *xceiv, struct usb_bus *host)
{
struct msm_otg *dev = container_of(xceiv, struct msm_otg, otg);
if (!dev || (dev != the_msm_otg))
return -ENODEV;
if (!host) {
msm_otg_start_host(xceiv, 0);
dev->otg.host = 0;
disable_idgnd(dev);
return 0;
}
dev->otg.host = host;
enable_idgnd(dev);
pr_info("host driver registered w/ tranceiver\n");
#ifndef CONFIG_USB_GADGET_MSM_72K
if (is_host())
msm_otg_start_host(&dev->otg, 1);
else
msm_otg_suspend(dev);
#endif
return 0;
}
static int msm_otg_set_host(struct otg_transceiver *xceiv, struct usb_bus *host)
{
struct msm_otg *dev = container_of(xceiv, struct msm_otg, otg);
if (!dev || (dev != the_msm_otg))
return -ENODEV;
/* Id pin is not routed to PMIC. Host mode can not be
* supported with pmic notification support.
*/
if (!dev->start_host || dev->pmic_notif_supp)
return -ENODEV;
if (!host) {
msm_otg_start_host(xceiv, REQUEST_STOP);
usb_unregister_notify(&dev->usbdev_nb);
dev->otg.host = 0;
dev->start_host = 0;
disable_idgnd(dev);
return 0;
}
dev->usbdev_nb.notifier_call = usbdev_notify;
usb_register_notify(&dev->usbdev_nb);
dev->otg.host = host;
enable_idgnd(dev);
pr_info("host driver registered w/ tranceiver\n");
#ifdef CONFIG_USB_OTG
host->otg_port = 1;
#else
wake_lock(&dev->wlock);
queue_work(dev->wq, &dev->sm_work);
#endif
return 0;
}
static void otg_reset(struct msm_otg *dev, int phy_reset)
{
unsigned long timeout;
u32 mode;
clk_enable(dev->hs_clk);
if (!phy_reset)
goto reset_link;
if (dev->pdata->phy_reset)
dev->pdata->phy_reset(dev->regs);
else
msm_otg_phy_reset(dev);
/*disable all phy interrupts*/
ulpi_write(dev, 0xFF, 0x0F);
ulpi_write(dev, 0xFF, 0x12);
msleep(100);
reset_link:
writel(USBCMD_RESET, USB_USBCMD);
timeout = jiffies + USB_LINK_RESET_TIMEOUT;
do {
if (time_after(jiffies, timeout)) {
pr_err("msm_otg: usb link reset timeout\n");
break;
}
msleep(1);
} while (readl(USB_USBCMD) & USBCMD_RESET);
/* select ULPI phy */
writel(0x80000000, USB_PORTSC);
set_pre_emphasis_level(dev);
set_cdr_auto_reset(dev);
set_driver_amplitude(dev);
writel(0x0, USB_AHB_BURST);
writel(0x00, USB_AHB_MODE);
clk_disable(dev->hs_clk);
if (test_bit(ID, &dev->inputs))
mode = USBMODE_SDIS | USBMODE_DEVICE;
else
mode = USBMODE_SDIS | USBMODE_HOST;
writel(mode, USB_USBMODE);
if (dev->otg.gadget)
enable_sess_valid(dev);
#ifdef CONFIG_USB_EHCI_MSM
if (dev->otg.host)
enable_idgnd(dev);
#endif
}
static void otg_reset(struct msm_otg *dev)
{
unsigned long timeout;
unsigned temp;
clk_enable(dev->clk);
if (dev->phy_reset)
dev->phy_reset(dev->regs);
/*disable all phy interrupts*/
ulpi_write(dev, 0xFF, 0x0F);
ulpi_write(dev, 0xFF, 0x12);
msleep(100);
writel(USBCMD_RESET, USB_USBCMD);
timeout = jiffies + USB_LINK_RESET_TIMEOUT;
do {
if (time_after(jiffies, timeout)) {
pr_err("msm_otg: usb link reset timeout\n");
break;
}
msleep(1);
} while (readl(USB_USBCMD) & USBCMD_RESET);
/* select ULPI phy */
writel(0x80000000, USB_PORTSC);
temp = ulpi_read(dev, ULPI_CONFIG_REG);
temp |= ULPI_AMPLITUDE_MAX;
ulpi_write(dev, temp, ULPI_CONFIG_REG);
writel(0x0, USB_AHB_BURST);
writel(0x00, USB_AHB_MODE);
clk_disable(dev->clk);
if (dev->otg.gadget)
enable_sess_valid(dev);
if (dev->otg.host)
enable_idgnd(dev);
}
