Example #1
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;

	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;
}
Example #2
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;
}
Example #3
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);
}