1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright 2005-2009 MontaVista Software, Inc.
8  * Power Management support by Dave Liu <daveliu@freescale.com>,
9  * Jerry Huang <Chang-Ming.Huang@freescale.com> and
29 #include "ehci-fsl.h"
32 #define DRV_NAME "ehci-fsl"
40  * fsl_ehci_drv_probe - initialize FSL-based HCDs
56 	pr_debug("initializing FSL-SOC USB Controller\n");  in fsl_ehci_drv_probe()
59 	pdata = dev_get_platdata(&pdev->dev);  in fsl_ehci_drv_probe()
61 		dev_err(&pdev->dev,  in fsl_ehci_drv_probe()
62 			"No platform data for %s.\n", dev_name(&pdev->dev));  in fsl_ehci_drv_probe()
63 		return -ENODEV;  in fsl_ehci_drv_probe()
70 	if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||  in fsl_ehci_drv_probe()
71 	      (pdata->operating_mode == FSL_USB2_MPH_HOST) ||  in fsl_ehci_drv_probe()
72 	      (pdata->operating_mode == FSL_USB2_DR_OTG))) {  in fsl_ehci_drv_probe()
73 		dev_err(&pdev->dev,  in fsl_ehci_drv_probe()
75 			dev_name(&pdev->dev));  in fsl_ehci_drv_probe()
76 		return -ENODEV;  in fsl_ehci_drv_probe()
83 	hcd = __usb_create_hcd(&fsl_ehci_hc_driver, pdev->dev.parent,  in fsl_ehci_drv_probe()
84 			       &pdev->dev, dev_name(&pdev->dev), NULL);  in fsl_ehci_drv_probe()
86 		retval = -ENOMEM;  in fsl_ehci_drv_probe()
91 	hcd->regs = devm_ioremap_resource(&pdev->dev, res);  in fsl_ehci_drv_probe()
92 	if (IS_ERR(hcd->regs)) {  in fsl_ehci_drv_probe()
93 		retval = PTR_ERR(hcd->regs);  in fsl_ehci_drv_probe()
97 	hcd->rsrc_start = res->start;  in fsl_ehci_drv_probe()
98 	hcd->rsrc_len = resource_size(res);  in fsl_ehci_drv_probe()
100 	pdata->regs = hcd->regs;  in fsl_ehci_drv_probe()
102 	if (pdata->power_budget)  in fsl_ehci_drv_probe()
103 		hcd->power_budget = pdata->power_budget;  in fsl_ehci_drv_probe()
108 	if (pdata->init && pdata->init(pdev)) {  in fsl_ehci_drv_probe()
109 		retval = -ENODEV;  in fsl_ehci_drv_probe()
114 	if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6) {  in fsl_ehci_drv_probe()
115 		tmp = ioread32be(hcd->regs + FSL_SOC_USB_CTRL);  in fsl_ehci_drv_probe()
118 		iowrite32be(tmp, hcd->regs + FSL_SOC_USB_CTRL);  in fsl_ehci_drv_probe()
122 	if (pdata->controller_ver == FSL_USB_VER_2_5 &&  in fsl_ehci_drv_probe()
123 	    pdata->phy_mode == FSL_USB2_PHY_ULPI)  in fsl_ehci_drv_probe()
124 		iowrite32be(USB_CTRL_USB_EN, hcd->regs + FSL_SOC_USB_CTRL);  in fsl_ehci_drv_probe()
130 	if (pdata->has_fsl_erratum_a007792) {  in fsl_ehci_drv_probe()
131 		tmp = ioread32be(hcd->regs + FSL_SOC_USB_CTRL);  in fsl_ehci_drv_probe()
134 		iowrite32be(tmp, hcd->regs + FSL_SOC_USB_CTRL);  in fsl_ehci_drv_probe()
136 		writel(PORT_PTS_UTMI, hcd->regs + FSL_SOC_USB_PORTSC1);  in fsl_ehci_drv_probe()
144 	device_wakeup_enable(hcd->self.controller);  in fsl_ehci_drv_probe()
147 	if (pdata->operating_mode == FSL_USB2_DR_OTG) {  in fsl_ehci_drv_probe()
150 		hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);  in fsl_ehci_drv_probe()
151 		dev_dbg(&pdev->dev, "hcd=0x%p  ehci=0x%p, phy=0x%p\n",  in fsl_ehci_drv_probe()
152 			hcd, ehci, hcd->usb_phy);  in fsl_ehci_drv_probe()
154 		if (!IS_ERR_OR_NULL(hcd->usb_phy)) {  in fsl_ehci_drv_probe()
155 			retval = otg_set_host(hcd->usb_phy->otg,  in fsl_ehci_drv_probe()
156 					      &ehci_to_hcd(ehci)->self);  in fsl_ehci_drv_probe()
158 				usb_put_phy(hcd->usb_phy);  in fsl_ehci_drv_probe()
162 			dev_err(&pdev->dev, "can't find phy\n");  in fsl_ehci_drv_probe()
163 			retval = -ENODEV;  in fsl_ehci_drv_probe()
167 		hcd->skip_phy_initialization = 1;  in fsl_ehci_drv_probe()
175 	dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);  in fsl_ehci_drv_probe()
176 	if (pdata->exit)  in fsl_ehci_drv_probe()
177 		pdata->exit(pdev);  in fsl_ehci_drv_probe()
183 	void __iomem *non_ehci = hcd->regs;  in usb_phy_clk_valid()
198 	void __iomem *non_ehci = hcd->regs;  in ehci_fsl_setup_phy()
199 	struct device *dev = hcd->self.controller;  in ehci_fsl_setup_phy()
202 	if (pdata->controller_ver < 0) {  in ehci_fsl_setup_phy()
203 		dev_warn(hcd->self.controller, "Could not get controller version\n");  in ehci_fsl_setup_phy()
204 		return -ENODEV;  in ehci_fsl_setup_phy()
207 	portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]);  in ehci_fsl_setup_phy()
212 		if (pdata->have_sysif_regs && pdata->controller_ver) {  in ehci_fsl_setup_phy()
235 		 * in device-tree is used to stop USB controller  in ehci_fsl_setup_phy()
238 		if (pdata->has_fsl_erratum_a006918) {  in ehci_fsl_setup_phy()
240 			return -EINVAL;  in ehci_fsl_setup_phy()
244 		/* PHY_CLK_VALID bit is de-featured from all controller  in ehci_fsl_setup_phy()
248 		if (pdata->controller_ver > FSL_USB_VER_2_4 &&  in ehci_fsl_setup_phy()
249 		    pdata->have_sysif_regs && !usb_phy_clk_valid(hcd)) {  in ehci_fsl_setup_phy()
251 			return -EINVAL;  in ehci_fsl_setup_phy()
254 		if (pdata->have_sysif_regs && pdata->controller_ver) {  in ehci_fsl_setup_phy()
262 						become stable - 10ms*/  in ehci_fsl_setup_phy()
265 		if (pdata->have_sysif_regs) {  in ehci_fsl_setup_phy()
277 	if (pdata->have_sysif_regs &&  in ehci_fsl_setup_phy()
278 	    pdata->controller_ver > FSL_USB_VER_1_6 &&  in ehci_fsl_setup_phy()
280 		dev_warn(hcd->self.controller, "USB PHY clock invalid\n");  in ehci_fsl_setup_phy()
281 		return -EINVAL;  in ehci_fsl_setup_phy()
284 	ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);  in ehci_fsl_setup_phy()
286 	if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs) {  in ehci_fsl_setup_phy()
300 	void __iomem *non_ehci = hcd->regs;  in ehci_fsl_usb_setup()
302 	pdata = dev_get_platdata(hcd->self.controller);  in ehci_fsl_usb_setup()
304 	if (pdata->have_sysif_regs) {  in ehci_fsl_usb_setup()
319 	/* Deal with USB erratum A-005275 */  in ehci_fsl_usb_setup()
320 	if (pdata->has_fsl_erratum_a005275 == 1)  in ehci_fsl_usb_setup()
321 		ehci->has_fsl_hs_errata = 1;  in ehci_fsl_usb_setup()
323 	if (pdata->has_fsl_erratum_a005697 == 1)  in ehci_fsl_usb_setup()
324 		ehci->has_fsl_susp_errata = 1;  in ehci_fsl_usb_setup()
326 	if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||  in ehci_fsl_usb_setup()
327 			(pdata->operating_mode == FSL_USB2_DR_OTG))  in ehci_fsl_usb_setup()
328 		if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))  in ehci_fsl_usb_setup()
329 			return -EINVAL;  in ehci_fsl_usb_setup()
331 	if (pdata->operating_mode == FSL_USB2_MPH_HOST) {  in ehci_fsl_usb_setup()
334 		if (pdata->has_fsl_erratum_14 == 1)  in ehci_fsl_usb_setup()
335 			ehci->has_fsl_port_bug = 1;  in ehci_fsl_usb_setup()
337 		if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)  in ehci_fsl_usb_setup()
338 			if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))  in ehci_fsl_usb_setup()
339 				return -EINVAL;  in ehci_fsl_usb_setup()
341 		if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)  in ehci_fsl_usb_setup()
342 			if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1))  in ehci_fsl_usb_setup()
343 				return -EINVAL;  in ehci_fsl_usb_setup()
346 	if (pdata->have_sysif_regs) {  in ehci_fsl_usb_setup()
360 /* called after powerup, by probe or system-pm "wakeup" */
364 		return -EINVAL;  in ehci_fsl_reinit()
377 	dev = hcd->self.controller;  in ehci_fsl_setup()
378 	pdata = dev_get_platdata(hcd->self.controller);  in ehci_fsl_setup()
379 	ehci->big_endian_desc = pdata->big_endian_desc;  in ehci_fsl_setup()
380 	ehci->big_endian_mmio = pdata->big_endian_mmio;  in ehci_fsl_setup()
383 	ehci->caps = hcd->regs + 0x100;  in ehci_fsl_setup()
387 	 * Deal with MPC834X/85XX that need port power to be cycled  in ehci_fsl_setup()
388 	 * after the power fault condition is removed. Otherwise the  in ehci_fsl_setup()
391 	ehci->need_oc_pp_cycle = 1;  in ehci_fsl_setup()
394 	hcd->has_tt = 1;  in ehci_fsl_setup()
400 	if (of_device_is_compatible(dev->parent->of_node,  in ehci_fsl_setup()
401 				    "fsl,mpc5121-usb2-dr")) {  in ehci_fsl_setup()
407 			    hcd->regs + FSL_SOC_USB_SBUSCFG);  in ehci_fsl_setup()
434 	u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE);  in ehci_fsl_mpc512x_drv_suspend()
436 	tmp = ehci_readl(ehci, hcd->regs + 0x140);	/* usbcmd */  in ehci_fsl_mpc512x_drv_suspend()
439 		"mode=%d  usbcmd %08x\n", pdata->suspended,  in ehci_fsl_mpc512x_drv_suspend()
440 		pdata->already_suspended, mode, tmp);  in ehci_fsl_mpc512x_drv_suspend()
446 	 * controller suspended at PM resume time.  in ehci_fsl_mpc512x_drv_suspend()
448 	if (pdata->suspended) {  in ehci_fsl_mpc512x_drv_suspend()
450 		pdata->already_suspended = 1;  in ehci_fsl_mpc512x_drv_suspend()
456 	ehci->rh_state = EHCI_RH_SUSPENDED;  in ehci_fsl_mpc512x_drv_suspend()
457 	dev->power.power_state = PMSG_SUSPEND;  in ehci_fsl_mpc512x_drv_suspend()
459 	/* ignore non-host interrupts */  in ehci_fsl_mpc512x_drv_suspend()
460 	clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);  in ehci_fsl_mpc512x_drv_suspend()
463 	tmp = ehci_readl(ehci, &ehci->regs->command);  in ehci_fsl_mpc512x_drv_suspend()
465 	ehci_writel(ehci, tmp, &ehci->regs->command);  in ehci_fsl_mpc512x_drv_suspend()
468 	pdata->pm_command = ehci_readl(ehci, &ehci->regs->command);  in ehci_fsl_mpc512x_drv_suspend()
469 	pdata->pm_command &= ~CMD_RUN;  in ehci_fsl_mpc512x_drv_suspend()
470 	pdata->pm_status  = ehci_readl(ehci, &ehci->regs->status);  in ehci_fsl_mpc512x_drv_suspend()
471 	pdata->pm_intr_enable  = ehci_readl(ehci, &ehci->regs->intr_enable);  in ehci_fsl_mpc512x_drv_suspend()
472 	pdata->pm_frame_index  = ehci_readl(ehci, &ehci->regs->frame_index);  in ehci_fsl_mpc512x_drv_suspend()
473 	pdata->pm_segment  = ehci_readl(ehci, &ehci->regs->segment);  in ehci_fsl_mpc512x_drv_suspend()
474 	pdata->pm_frame_list  = ehci_readl(ehci, &ehci->regs->frame_list);  in ehci_fsl_mpc512x_drv_suspend()
475 	pdata->pm_async_next  = ehci_readl(ehci, &ehci->regs->async_next);  in ehci_fsl_mpc512x_drv_suspend()
476 	pdata->pm_configured_flag  =  in ehci_fsl_mpc512x_drv_suspend()
477 		ehci_readl(ehci, &ehci->regs->configured_flag);  in ehci_fsl_mpc512x_drv_suspend()
478 	pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]);  in ehci_fsl_mpc512x_drv_suspend()
479 	pdata->pm_usbgenctrl = ehci_readl(ehci,  in ehci_fsl_mpc512x_drv_suspend()
480 					  hcd->regs + FSL_SOC_USB_USBGENCTRL);  in ehci_fsl_mpc512x_drv_suspend()
483 	pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS);  in ehci_fsl_mpc512x_drv_suspend()
485 	pdata->suspended = 1;  in ehci_fsl_mpc512x_drv_suspend()
487 	/* clear PP to cut power to the port */  in ehci_fsl_mpc512x_drv_suspend()
488 	tmp = ehci_readl(ehci, &ehci->regs->port_status[0]);  in ehci_fsl_mpc512x_drv_suspend()
490 	ehci_writel(ehci, tmp, &ehci->regs->port_status[0]);  in ehci_fsl_mpc512x_drv_suspend()
503 		pdata->suspended, pdata->already_suspended);  in ehci_fsl_mpc512x_drv_resume()
506 	 * If the controller was already suspended at suspend time,  in ehci_fsl_mpc512x_drv_resume()
509 	if (pdata->already_suspended) {  in ehci_fsl_mpc512x_drv_resume()
511 		pdata->already_suspended = 0;  in ehci_fsl_mpc512x_drv_resume()
515 	if (!pdata->suspended) {  in ehci_fsl_mpc512x_drv_resume()
520 	pdata->suspended = 0;  in ehci_fsl_mpc512x_drv_resume()
525 	tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0);  in ehci_fsl_mpc512x_drv_resume()
526 	ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE);  in ehci_fsl_mpc512x_drv_resume()
528 	ehci_writel(ehci, pdata->pm_usbgenctrl,  in ehci_fsl_mpc512x_drv_resume()
529 		    hcd->regs + FSL_SOC_USB_USBGENCTRL);  in ehci_fsl_mpc512x_drv_resume()
531 		    hcd->regs + FSL_SOC_USB_ISIPHYCTRL);  in ehci_fsl_mpc512x_drv_resume()
533 	ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);  in ehci_fsl_mpc512x_drv_resume()
536 	ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);  in ehci_fsl_mpc512x_drv_resume()
537 	ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);  in ehci_fsl_mpc512x_drv_resume()
538 	ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index);  in ehci_fsl_mpc512x_drv_resume()
539 	ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment);  in ehci_fsl_mpc512x_drv_resume()
540 	ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list);  in ehci_fsl_mpc512x_drv_resume()
541 	ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next);  in ehci_fsl_mpc512x_drv_resume()
542 	ehci_writel(ehci, pdata->pm_configured_flag,  in ehci_fsl_mpc512x_drv_resume()
543 		    &ehci->regs->configured_flag);  in ehci_fsl_mpc512x_drv_resume()
544 	ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);  in ehci_fsl_mpc512x_drv_resume()
546 	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);  in ehci_fsl_mpc512x_drv_resume()
547 	ehci->rh_state = EHCI_RH_RUNNING;  in ehci_fsl_mpc512x_drv_resume()
548 	dev->power.power_state = PMSG_ON;  in ehci_fsl_mpc512x_drv_resume()
550 	tmp = ehci_readl(ehci, &ehci->regs->command);  in ehci_fsl_mpc512x_drv_resume()
552 	ehci_writel(ehci, tmp, &ehci->regs->command);  in ehci_fsl_mpc512x_drv_resume()
581 	void __iomem *non_ehci = hcd->regs;  in ehci_fsl_drv_suspend()
583 	if (of_device_is_compatible(dev->parent->of_node,  in ehci_fsl_drv_suspend()
584 				    "fsl,mpc5121-usb2-dr")) {  in ehci_fsl_drv_suspend()
593 	ehci_fsl->usb_ctrl = ioread32be(non_ehci + FSL_SOC_USB_CTRL);  in ehci_fsl_drv_suspend()
602 	void __iomem *non_ehci = hcd->regs;  in ehci_fsl_drv_resume()
604 	if (of_device_is_compatible(dev->parent->of_node,  in ehci_fsl_drv_resume()
605 				    "fsl,mpc5121-usb2-dr")) {  in ehci_fsl_drv_resume()
613 	usb_root_hub_lost_power(hcd->self.root_hub);  in ehci_fsl_drv_resume()
616 	iowrite32be(ehci_fsl->usb_ctrl, non_ehci + FSL_SOC_USB_CTRL);  in ehci_fsl_drv_resume()
628 	usb_root_hub_lost_power(hcd->self.root_hub);  in ehci_fsl_drv_restore()
650 		return -EINVAL;  in ehci_start_port_reset()
652 	port--;  in ehci_start_port_reset()
654 	/* start port reset before HNP protocol time out */  in ehci_start_port_reset()
655 	status = readl(&ehci->regs->port_status[port]);  in ehci_start_port_reset()
657 		return -ENODEV;  in ehci_start_port_reset()
663 		       &ehci->regs->port_status[port]);  in ehci_start_port_reset()
665 		writel(PORT_RESET, &ehci->regs->port_status[port]);  in ehci_start_port_reset()
680  * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs
689 	struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);  in fsl_ehci_drv_remove()
692 	if (!IS_ERR_OR_NULL(hcd->usb_phy)) {  in fsl_ehci_drv_remove()
693 		otg_set_host(hcd->usb_phy->otg, NULL);  in fsl_ehci_drv_remove()
694 		usb_put_phy(hcd->usb_phy);  in fsl_ehci_drv_remove()
700 	 * do platform specific un-initialization:  in fsl_ehci_drv_remove()
703 	if (pdata->exit)  in fsl_ehci_drv_remove()
704 		pdata->exit(pdev);  in fsl_ehci_drv_remove()
715 		.name = "fsl-ehci",
723 		return -ENODEV;  in ehci_fsl_init()
728 			"Freescale On-Chip EHCI Host Controller";  in ehci_fsl_init()