1 // SPDX-License-Identifier: GPL-2.0
3  * dwc3-imx8mp.c - NXP imx8mp Specific Glue layer
45 #define USB_CTRL0_PORTPWR_EN	BIT(12) /* 1 - PPC enabled (default) */
46 #define USB_CTRL0_USB3_FIXED	BIT(22) /* 1 - USB3 permanent attached */
47 #define USB_CTRL0_USB2_FIXED	BIT(23) /* 1 - USB2 permanent attached */
49 #define USB_CTRL1_OC_POLARITY	BIT(16) /* 0 - HIGH / 1 - LOW */
50 #define USB_CTRL1_PWR_POLARITY	BIT(17) /* 0 - HIGH / 1 - LOW */
66 	struct device *dev = dwc3_imx->dev;  in imx8mp_configure_glue()
69 	if (!dwc3_imx->glue_base)  in imx8mp_configure_glue()
72 	value = readl(dwc3_imx->glue_base + USB_CTRL0);  in imx8mp_configure_glue()
74 	if (device_property_read_bool(dev, "fsl,permanently-attached"))  in imx8mp_configure_glue()
79 	if (device_property_read_bool(dev, "fsl,disable-port-power-control"))  in imx8mp_configure_glue()
84 	writel(value, dwc3_imx->glue_base + USB_CTRL0);  in imx8mp_configure_glue()
86 	value = readl(dwc3_imx->glue_base + USB_CTRL1);  in imx8mp_configure_glue()
87 	if (device_property_read_bool(dev, "fsl,over-current-active-low"))  in imx8mp_configure_glue()
92 	if (device_property_read_bool(dev, "fsl,power-active-low"))  in imx8mp_configure_glue()
97 	writel(value, dwc3_imx->glue_base + USB_CTRL1);  in imx8mp_configure_glue()
103 	struct dwc3	*dwc3 = platform_get_drvdata(dwc3_imx->dwc3);  in dwc3_imx8mp_wakeup_enable()
109 	val = readl(dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_enable()
111 	if ((dwc3->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc3->xhci) {  in dwc3_imx8mp_wakeup_enable()
120 	writel(val, dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_enable()
127 	val = readl(dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_disable()
129 	writel(val, dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_disable()
135 	struct dwc3		*dwc = platform_get_drvdata(dwc3_imx->dwc3);  in dwc3_imx8mp_interrupt()
137 	if (!dwc3_imx->pm_suspended)  in dwc3_imx8mp_interrupt()
140 	disable_irq_nosync(dwc3_imx->irq);  in dwc3_imx8mp_interrupt()
141 	dwc3_imx->wakeup_pending = true;  in dwc3_imx8mp_interrupt()
143 	if ((dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc->xhci)  in dwc3_imx8mp_interrupt()
144 		pm_runtime_resume(&dwc->xhci->dev);  in dwc3_imx8mp_interrupt()
145 	else if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_DEVICE)  in dwc3_imx8mp_interrupt()
146 		pm_runtime_get(dwc->dev);  in dwc3_imx8mp_interrupt()
156 	props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-missing-cas-quirk");  in dwc3_imx8mp_set_software_node()
157 	props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-skip-phy-init-quirk");  in dwc3_imx8mp_set_software_node()
164 	struct device		*dev = &pdev->dev;  in dwc3_imx8mp_probe()
165 	struct device_node	*node = dev->of_node;  in dwc3_imx8mp_probe()
172 		return -EINVAL;  in dwc3_imx8mp_probe()
177 		return -ENOMEM;  in dwc3_imx8mp_probe()
181 	dwc3_imx->dev = dev;  in dwc3_imx8mp_probe()
183 	dwc3_imx->hsio_blk_base = devm_platform_ioremap_resource(pdev, 0);  in dwc3_imx8mp_probe()
184 	if (IS_ERR(dwc3_imx->hsio_blk_base))  in dwc3_imx8mp_probe()
185 		return PTR_ERR(dwc3_imx->hsio_blk_base);  in dwc3_imx8mp_probe()
191 		dwc3_imx->glue_base = devm_ioremap_resource(dev, res);  in dwc3_imx8mp_probe()
192 		if (IS_ERR(dwc3_imx->glue_base))  in dwc3_imx8mp_probe()
193 			return PTR_ERR(dwc3_imx->glue_base);  in dwc3_imx8mp_probe()
196 	dwc3_imx->hsio_clk = devm_clk_get_enabled(dev, "hsio");  in dwc3_imx8mp_probe()
197 	if (IS_ERR(dwc3_imx->hsio_clk))  in dwc3_imx8mp_probe()
198 		return dev_err_probe(dev, PTR_ERR(dwc3_imx->hsio_clk),  in dwc3_imx8mp_probe()
201 	dwc3_imx->suspend_clk = devm_clk_get_enabled(dev, "suspend");  in dwc3_imx8mp_probe()
202 	if (IS_ERR(dwc3_imx->suspend_clk))  in dwc3_imx8mp_probe()
203 		return dev_err_probe(dev, PTR_ERR(dwc3_imx->suspend_clk),  in dwc3_imx8mp_probe()
209 	dwc3_imx->irq = irq;  in dwc3_imx8mp_probe()
214 		return dev_err_probe(dev, -ENODEV, "failed to find dwc3 core child\n");  in dwc3_imx8mp_probe()
226 		err = -ENODEV;  in dwc3_imx8mp_probe()
233 		dev_err(&pdev->dev, "failed to create dwc3 core\n");  in dwc3_imx8mp_probe()
237 	dwc3_imx->dwc3 = of_find_device_by_node(dwc3_np);  in dwc3_imx8mp_probe()
238 	if (!dwc3_imx->dwc3) {  in dwc3_imx8mp_probe()
240 		err = -ENODEV;  in dwc3_imx8mp_probe()
247 		dev_err(dev, "failed to request IRQ #%d --> %d\n", irq, err);  in dwc3_imx8mp_probe()
267 	struct device *dev = &pdev->dev;  in dwc3_imx8mp_remove()
278 	if (dwc3_imx->pm_suspended)  in dwc3_imx8mp_suspend()
282 	if (PMSG_IS_AUTO(msg) || device_may_wakeup(dwc3_imx->dev))  in dwc3_imx8mp_suspend()
285 	dwc3_imx->pm_suspended = true;  in dwc3_imx8mp_suspend()
292 	struct dwc3	*dwc = platform_get_drvdata(dwc3_imx->dwc3);  in dwc3_imx8mp_resume()
295 	if (!dwc3_imx->pm_suspended)  in dwc3_imx8mp_resume()
300 	dwc3_imx->pm_suspended = false;  in dwc3_imx8mp_resume()
305 	if (dwc3_imx->wakeup_pending) {  in dwc3_imx8mp_resume()
306 		dwc3_imx->wakeup_pending = false;  in dwc3_imx8mp_resume()
307 		if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_DEVICE) {  in dwc3_imx8mp_resume()
308 			pm_runtime_mark_last_busy(dwc->dev);  in dwc3_imx8mp_resume()
309 			pm_runtime_put_autosuspend(dwc->dev);  in dwc3_imx8mp_resume()
313 			 * clock to normal clock to detect connection.  in dwc3_imx8mp_resume()
317 		enable_irq(dwc3_imx->irq);  in dwc3_imx8mp_resume()
330 	if (device_may_wakeup(dwc3_imx->dev))  in dwc3_imx8mp_pm_suspend()
331 		enable_irq_wake(dwc3_imx->irq);  in dwc3_imx8mp_pm_suspend()
333 		clk_disable_unprepare(dwc3_imx->suspend_clk);  in dwc3_imx8mp_pm_suspend()
335 	clk_disable_unprepare(dwc3_imx->hsio_clk);  in dwc3_imx8mp_pm_suspend()
336 	dev_dbg(dev, "dwc3 imx8mp pm suspend.\n");  in dwc3_imx8mp_pm_suspend()
346 	if (device_may_wakeup(dwc3_imx->dev)) {  in dwc3_imx8mp_pm_resume()
347 		disable_irq_wake(dwc3_imx->irq);  in dwc3_imx8mp_pm_resume()
349 		ret = clk_prepare_enable(dwc3_imx->suspend_clk);  in dwc3_imx8mp_pm_resume()
354 	ret = clk_prepare_enable(dwc3_imx->hsio_clk);  in dwc3_imx8mp_pm_resume()
356 		clk_disable_unprepare(dwc3_imx->suspend_clk);  in dwc3_imx8mp_pm_resume()
366 	dev_dbg(dev, "dwc3 imx8mp pm resume.\n");  in dwc3_imx8mp_pm_resume()
375 	dev_dbg(dev, "dwc3 imx8mp runtime suspend.\n");  in dwc3_imx8mp_runtime_suspend()
384 	dev_dbg(dev, "dwc3 imx8mp runtime resume.\n");  in dwc3_imx8mp_runtime_resume()
396 	{ .compatible = "fsl,imx8mp-dwc3", },
405 		.name	= "imx8mp-dwc3",
413 MODULE_ALIAS("platform:imx8mp-dwc3");
416 MODULE_DESCRIPTION("DesignWare USB3 imx8mp Glue Layer");