C++ phy_power_off函数代码示例

static int dwc3_remove(struct platform_device *pdev)
{
	struct dwc3	*dwc = platform_get_drvdata(pdev);
	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	/*
	 * restore res->start back to its original value so that, in case the
	 * probe is deferred, we don't end up getting error in request the
	 * memory region the next time probe is called.
	 */
	res->start -= DWC3_GLOBALS_REGS_START;

	dwc3_debugfs_exit(dwc);
	dwc3_core_exit_mode(dwc);
	dwc3_event_buffers_cleanup(dwc);
	dwc3_free_event_buffers(dwc);

	usb_phy_set_suspend(dwc->usb2_phy, 1);
	usb_phy_set_suspend(dwc->usb3_phy, 1);
	phy_power_off(dwc->usb2_generic_phy);
	phy_power_off(dwc->usb3_generic_phy);

	dwc3_core_exit(dwc);
	dwc3_ulpi_exit(dwc);

	pm_runtime_put_sync(&pdev->dev);
	pm_runtime_disable(&pdev->dev);

	return 0;
}

static int dwc3_suspend(struct device *dev)
{
	struct dwc3	*dwc = dev_get_drvdata(dev);
	unsigned long	flags;

	spin_lock_irqsave(&dwc->lock, flags);

	switch (dwc->dr_mode) {
	case USB_DR_MODE_PERIPHERAL:
	case USB_DR_MODE_OTG:
		dwc3_gadget_suspend(dwc);
		/* FALLTHROUGH */
	case USB_DR_MODE_HOST:
	default:
		dwc3_event_buffers_cleanup(dwc);
		break;
	}

	dwc->gctl = dwc3_readl(dwc->regs, DWC3_GCTL);
	spin_unlock_irqrestore(&dwc->lock, flags);

	usb_phy_shutdown(dwc->usb3_phy);
	usb_phy_shutdown(dwc->usb2_phy);
	phy_exit(dwc->usb2_generic_phy);
	phy_exit(dwc->usb3_generic_phy);

	usb_phy_set_suspend(dwc->usb2_phy, 1);
	usb_phy_set_suspend(dwc->usb3_phy, 1);
	WARN_ON(phy_power_off(dwc->usb2_generic_phy) < 0);
	WARN_ON(phy_power_off(dwc->usb3_generic_phy) < 0);

	pinctrl_pm_select_sleep_state(dev);

	return 0;
}

static void dwc3_core_exit(struct dwc3 *dwc)
{
	dwc3_event_buffers_cleanup(dwc);

	usb_phy_shutdown(dwc->usb2_phy);
	usb_phy_shutdown(dwc->usb3_phy);
	phy_exit(dwc->usb2_generic_phy);
	phy_exit(dwc->usb3_generic_phy);

	usb_phy_set_suspend(dwc->usb2_phy, 1);
	usb_phy_set_suspend(dwc->usb3_phy, 1);
	phy_power_off(dwc->usb2_generic_phy);
	phy_power_off(dwc->usb3_generic_phy);
}

static void dwc3_core_exit(struct dwc3 *dwc)
{
	usb_phy_shutdown(dwc->usb2_phy);
	usb_phy_shutdown(dwc->usb3_phy);
	phy_exit(dwc->usb2_generic_phy);
	phy_exit(dwc->usb3_generic_phy);

	usb_phy_set_suspend(dwc->usb2_phy, 1);
	usb_phy_set_suspend(dwc->usb3_phy, 1);
	phy_power_off(dwc->usb2_generic_phy);
	phy_power_off(dwc->usb3_generic_phy);
	clk_bulk_disable(dwc->num_clks, dwc->clks);
	clk_bulk_unprepare(dwc->num_clks, dwc->clks);
	reset_control_assert(dwc->reset);
}

static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
{
	struct analogix_dp_device *dp = bridge->driver_private;
	int ret;

	if (dp->dpms_mode != DRM_MODE_DPMS_ON)
		return;

	if (dp->plat_data->panel) {
		if (drm_panel_disable(dp->plat_data->panel)) {
			DRM_ERROR("failed to disable the panel\n");
			return;
		}
	}

	disable_irq(dp->irq);
	phy_power_off(dp->phy);

	if (dp->plat_data->power_off)
		dp->plat_data->power_off(dp->plat_data);

	pm_runtime_put_sync(dp->dev);

	ret = analogix_dp_prepare_panel(dp, false, true);
	if (ret)
		DRM_ERROR("failed to setup the panel ret = %d\n", ret);

	dp->dpms_mode = DRM_MODE_DPMS_OFF;
}

static int __dwc2_lowlevel_hw_disable(struct dwc2_hsotg *hsotg)
{
	struct platform_device *pdev = to_platform_device(hsotg->dev);
	int ret = 0;

	if (hsotg->uphy) {
		usb_phy_shutdown(hsotg->uphy);
	} else if (hsotg->plat && hsotg->plat->phy_exit) {
		ret = hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type);
	} else {
		ret = phy_exit(hsotg->phy);
		if (ret == 0)
			ret = phy_power_off(hsotg->phy);
	}
	if (ret)
		return ret;

	if (hsotg->clk)
		clk_disable_unprepare(hsotg->clk);

	ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
				     hsotg->supplies);

	return ret;
}

static int dra7xx_pcie_resume_noirq(struct device *dev)
{
	struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev);
	int phy_count = dra7xx->phy_count;
	int ret;
	int i;

	for (i = 0; i < phy_count; i++) {
		ret = phy_init(dra7xx->phy[i]);
		if (ret < 0)
			goto err_phy;

		ret = phy_power_on(dra7xx->phy[i]);
		if (ret < 0) {
			phy_exit(dra7xx->phy[i]);
			goto err_phy;
		}
	}

	return 0;

err_phy:
	while (--i >= 0) {
		phy_power_off(dra7xx->phy[i]);
		phy_exit(dra7xx->phy[i]);
	}

	return ret;
}

static void ssusb_phy_power_off(struct ssusb_mtk *ssusb)
{
	unsigned int i;

	for (i = 0; i < ssusb->num_phys; i++)
		phy_power_off(ssusb->phys[i]);
}

static void exynos_dp_bridge_disable(struct drm_bridge *bridge)
{
	struct exynos_dp_device *dp = bridge->driver_private;
	struct exynos_drm_crtc *crtc = dp_to_crtc(dp);

	if (dp->dpms_mode != DRM_MODE_DPMS_ON)
		return;

	if (dp->panel) {
		if (drm_panel_disable(dp->panel)) {
			DRM_ERROR("failed to disable the panel\n");
			return;
		}
	}

	disable_irq(dp->irq);
	flush_work(&dp->hotplug_work);
	phy_power_off(dp->phy);

	if (crtc->ops->clock_enable)
		crtc->ops->clock_enable(dp_to_crtc(dp), false);

	if (dp->panel) {
		if (drm_panel_unprepare(dp->panel))
			DRM_ERROR("failed to turnoff the panel\n");
	}

	pm_runtime_put_sync(dp->dev);

	dp->dpms_mode = DRM_MODE_DPMS_OFF;
}

static void xhci_mtk_phy_power_off(struct xhci_hcd_mtk *mtk)
{
	unsigned int i;

	for (i = 0; i < mtk->num_phys; i++)
		phy_power_off(mtk->phys[i]);
}

static void ohci_da8xx_disable(struct usb_hcd *hcd)
{
	struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);

	phy_power_off(da8xx_ohci->usb11_phy);
	phy_exit(da8xx_ohci->usb11_phy);
	clk_disable_unprepare(da8xx_ohci->usb11_clk);
}

int ufs_qcom_phy_exit(struct phy *generic_phy)
{
    struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);

    if (ufs_qcom_phy->is_powered_on)
        phy_power_off(generic_phy);

    return 0;
}

int iproc_pcie_remove(struct iproc_pcie *pcie)
{
	pci_stop_root_bus(pcie->root_bus);
	pci_remove_root_bus(pcie->root_bus);

	phy_power_off(pcie->phy);
	phy_exit(pcie->phy);

	return 0;
}

int ufs_qcom_phy_remove(struct phy *generic_phy,
                        struct ufs_qcom_phy *ufs_qcom_phy)
{
    phy_power_off(generic_phy);

    kfree(ufs_qcom_phy->vdda_pll.name);
    kfree(ufs_qcom_phy->vdda_phy.name);

    return 0;
}

static int omap2430_musb_exit(struct musb *musb)
{
	del_timer_sync(&musb_idle_timer);

	omap2430_low_level_exit(musb);
	phy_power_off(musb->phy);
	phy_exit(musb->phy);

	return 0;
}