1 // SPDX-License-Identifier: GPL-2.0
3  * dwc3-omap.c - OMAP Specific Glue layer
5  * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
18 #include <linux/dma-mapping.h>
118 	void __iomem		*base;  member
141 static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)  in dwc3_omap_readl()  argument
143 	return readl(base + offset);  in dwc3_omap_readl()
146 static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)  in dwc3_omap_writel()  argument
148 	writel(value, base + offset);  in dwc3_omap_writel()
153 	return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_CTRL +  in dwc3_omap_read_utmi_ctrl()
154 							omap->utmi_otg_offset);  in dwc3_omap_read_utmi_ctrl()
159 	dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_CTRL +  in dwc3_omap_write_utmi_ctrl()
160 					omap->utmi_otg_offset, value);  in dwc3_omap_write_utmi_ctrl()
166 	return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_0 -  in dwc3_omap_read_irq0_status()
167 						omap->irq0_offset);  in dwc3_omap_read_irq0_status()
172 	dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 -  in dwc3_omap_write_irq0_status()
173 						omap->irq0_offset, value);  in dwc3_omap_write_irq0_status()
179 	return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_MISC +  in dwc3_omap_read_irqmisc_status()
180 						omap->irqmisc_offset);  in dwc3_omap_read_irqmisc_status()
185 	dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC +  in dwc3_omap_write_irqmisc_status()
186 					omap->irqmisc_offset, value);  in dwc3_omap_write_irqmisc_status()
192 	dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC +  in dwc3_omap_write_irqmisc_set()
193 						omap->irqmisc_offset, value);  in dwc3_omap_write_irqmisc_set()
199 	dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 -  in dwc3_omap_write_irq0_set()
200 						omap->irq0_offset, value);  in dwc3_omap_write_irq0_set()
205 	dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_MISC +  in dwc3_omap_write_irqmisc_clr()
206 						omap->irqmisc_offset, value);  in dwc3_omap_write_irqmisc_clr()
211 	dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_0 -  in dwc3_omap_write_irq0_clr()
212 						omap->irq0_offset, value);  in dwc3_omap_write_irq0_clr()
223 		if (omap->vbus_reg) {  in dwc3_omap_set_mailbox()
224 			ret = regulator_enable(omap->vbus_reg);  in dwc3_omap_set_mailbox()
226 				dev_err(omap->dev, "regulator enable failed\n");  in dwc3_omap_set_mailbox()
245 		if (omap->vbus_reg && regulator_is_enabled(omap->vbus_reg))  in dwc3_omap_set_mailbox()
246 			regulator_disable(omap->vbus_reg);  in dwc3_omap_set_mailbox()
261 		dev_WARN(omap->dev, "invalid state\n");  in dwc3_omap_set_mailbox()
370 	struct device_node	*node = omap->dev->of_node;  in dwc3_omap_map_offset()
380 	if (of_device_is_compatible(node, "ti,am437x-dwc3")) {  in dwc3_omap_map_offset()
381 		omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;  in dwc3_omap_map_offset()
382 		omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;  in dwc3_omap_map_offset()
383 		omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;  in dwc3_omap_map_offset()
384 		omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;  in dwc3_omap_map_offset()
385 		omap->debug_offset = USBOTGSS_DEBUG_OFFSET;  in dwc3_omap_map_offset()
392 	struct device_node	*node = omap->dev->of_node;  in dwc3_omap_set_utmi_mode()
397 	of_property_read_u32(node, "utmi-mode", &utmi_mode);  in dwc3_omap_set_utmi_mode()
407 		dev_WARN(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode);  in dwc3_omap_set_utmi_mode()
416 	struct device_node	*node = omap->dev->of_node;  in dwc3_omap_extcon_register()
420 		edev = extcon_get_edev_by_phandle(omap->dev, 0);  in dwc3_omap_extcon_register()
422 			dev_vdbg(omap->dev, "couldn't get extcon device\n");  in dwc3_omap_extcon_register()
423 			return -EPROBE_DEFER;  in dwc3_omap_extcon_register()
426 		omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier;  in dwc3_omap_extcon_register()
427 		ret = devm_extcon_register_notifier(omap->dev, edev,  in dwc3_omap_extcon_register()
428 						EXTCON_USB, &omap->vbus_nb);  in dwc3_omap_extcon_register()
430 			dev_vdbg(omap->dev, "failed to register notifier for USB\n");  in dwc3_omap_extcon_register()
432 		omap->id_nb.notifier_call = dwc3_omap_id_notifier;  in dwc3_omap_extcon_register()
433 		ret = devm_extcon_register_notifier(omap->dev, edev,  in dwc3_omap_extcon_register()
434 						EXTCON_USB_HOST, &omap->id_nb);  in dwc3_omap_extcon_register()
436 			dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n");  in dwc3_omap_extcon_register()
448 		omap->edev = edev;  in dwc3_omap_extcon_register()
456 	struct device_node	*node = pdev->dev.of_node;  in dwc3_omap_probe()
459 	struct device		*dev = &pdev->dev;  in dwc3_omap_probe()
465 	void __iomem		*base;  in dwc3_omap_probe()  local
469 		return -EINVAL;  in dwc3_omap_probe()
474 		return -ENOMEM;  in dwc3_omap_probe()
482 	base = devm_platform_ioremap_resource(pdev, 0);  in dwc3_omap_probe()
483 	if (IS_ERR(base))  in dwc3_omap_probe()
484 		return PTR_ERR(base);  in dwc3_omap_probe()
488 		if (PTR_ERR(vbus_reg) != -ENODEV)  in dwc3_omap_probe()
493 	omap->dev	= dev;  in dwc3_omap_probe()
494 	omap->irq	= irq;  in dwc3_omap_probe()
495 	omap->base	= base;  in dwc3_omap_probe()
496 	omap->vbus_reg	= vbus_reg;  in dwc3_omap_probe()
514 		dev_err(&pdev->dev, "failed to create dwc3 core\n");  in dwc3_omap_probe()
518 	ret = devm_request_threaded_irq(dev, omap->irq, dwc3_omap_interrupt,  in dwc3_omap_probe()
520 					"dwc3-omap", omap);  in dwc3_omap_probe()
522 		dev_err(dev, "failed to request IRQ #%d --> %d\n",  in dwc3_omap_probe()
523 			omap->irq, ret);  in dwc3_omap_probe()
543 	disable_irq(omap->irq);  in dwc3_omap_remove()
544 	of_platform_depopulate(omap->dev);  in dwc3_omap_remove()
545 	pm_runtime_put_sync(&pdev->dev);  in dwc3_omap_remove()
546 	pm_runtime_disable(&pdev->dev);  in dwc3_omap_remove()
554 		.compatible =	"ti,am437x-dwc3"
565 	omap->utmi_otg_ctrl = dwc3_omap_read_utmi_ctrl(omap);  in dwc3_omap_suspend()
575 	dwc3_omap_write_utmi_ctrl(omap, omap->utmi_otg_ctrl);  in dwc3_omap_resume()
589 	if (extcon_get_state(omap->edev, EXTCON_USB))  in dwc3_omap_complete()
594 	if (extcon_get_state(omap->edev, EXTCON_USB_HOST))  in dwc3_omap_complete()
615 		.name	= "omap-dwc3",
623 MODULE_ALIAS("platform:omap-dwc3");
626 MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer");