1 // SPDX-License-Identifier: GPL-2.0
3  * dwc3-imx8mp.c - NXP imx8mp Specific Glue layer
44 #define USB_CTRL0_PORTPWR_EN	BIT(12) /* 1 - PPC enabled (default) */
45 #define USB_CTRL0_USB3_FIXED	BIT(22) /* 1 - USB3 permanent attached */
46 #define USB_CTRL0_USB2_FIXED	BIT(23) /* 1 - USB2 permanent attached */
48 #define USB_CTRL1_OC_POLARITY	BIT(16) /* 0 - HIGH / 1 - LOW */
49 #define USB_CTRL1_PWR_POLARITY	BIT(17) /* 0 - HIGH / 1 - LOW */
65 	struct device *dev = dwc3_imx->dev;  in imx8mp_configure_glue()
68 	if (!dwc3_imx->glue_base)  in imx8mp_configure_glue()
71 	value = readl(dwc3_imx->glue_base + USB_CTRL0);  in imx8mp_configure_glue()
73 	if (device_property_read_bool(dev, "fsl,permanently-attached"))  in imx8mp_configure_glue()
78 	if (device_property_read_bool(dev, "fsl,disable-port-power-control"))  in imx8mp_configure_glue()
83 	writel(value, dwc3_imx->glue_base + USB_CTRL0);  in imx8mp_configure_glue()
85 	value = readl(dwc3_imx->glue_base + USB_CTRL1);  in imx8mp_configure_glue()
86 	if (device_property_read_bool(dev, "fsl,over-current-active-low"))  in imx8mp_configure_glue()
91 	if (device_property_read_bool(dev, "fsl,power-active-low"))  in imx8mp_configure_glue()
96 	writel(value, dwc3_imx->glue_base + USB_CTRL1);  in imx8mp_configure_glue()
101 	struct dwc3	*dwc3 = platform_get_drvdata(dwc3_imx->dwc3);  in dwc3_imx8mp_wakeup_enable()
107 	val = readl(dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_enable()
109 	if ((dwc3->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc3->xhci)  in dwc3_imx8mp_wakeup_enable()
112 	else if (dwc3->current_dr_role == DWC3_GCTL_PRTCAP_DEVICE)  in dwc3_imx8mp_wakeup_enable()
116 	writel(val, dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_enable()
123 	val = readl(dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_disable()
125 	writel(val, dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);  in dwc3_imx8mp_wakeup_disable()
131 	struct dwc3		*dwc = platform_get_drvdata(dwc3_imx->dwc3);  in dwc3_imx8mp_interrupt()
133 	if (!dwc3_imx->pm_suspended)  in dwc3_imx8mp_interrupt()
136 	disable_irq_nosync(dwc3_imx->irq);  in dwc3_imx8mp_interrupt()
137 	dwc3_imx->wakeup_pending = true;  in dwc3_imx8mp_interrupt()
139 	if ((dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc->xhci)  in dwc3_imx8mp_interrupt()
140 		pm_runtime_resume(&dwc->xhci->dev);  in dwc3_imx8mp_interrupt()
141 	else if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_DEVICE)  in dwc3_imx8mp_interrupt()
142 		pm_runtime_get(dwc->dev);  in dwc3_imx8mp_interrupt()
149 	struct device		*dev = &pdev->dev;  in dwc3_imx8mp_probe()
150 	struct device_node	*dwc3_np, *node = dev->of_node;  in dwc3_imx8mp_probe()
157 		return -EINVAL;  in dwc3_imx8mp_probe()
162 		return -ENOMEM;  in dwc3_imx8mp_probe()
166 	dwc3_imx->dev = dev;  in dwc3_imx8mp_probe()
168 	dwc3_imx->hsio_blk_base = devm_platform_ioremap_resource(pdev, 0);  in dwc3_imx8mp_probe()
169 	if (IS_ERR(dwc3_imx->hsio_blk_base))  in dwc3_imx8mp_probe()
170 		return PTR_ERR(dwc3_imx->hsio_blk_base);  in dwc3_imx8mp_probe()
176 		dwc3_imx->glue_base = devm_ioremap_resource(dev, res);  in dwc3_imx8mp_probe()
177 		if (IS_ERR(dwc3_imx->glue_base))  in dwc3_imx8mp_probe()
178 			return PTR_ERR(dwc3_imx->glue_base);  in dwc3_imx8mp_probe()
181 	dwc3_imx->hsio_clk = devm_clk_get(dev, "hsio");  in dwc3_imx8mp_probe()
182 	if (IS_ERR(dwc3_imx->hsio_clk)) {  in dwc3_imx8mp_probe()
183 		err = PTR_ERR(dwc3_imx->hsio_clk);  in dwc3_imx8mp_probe()
188 	err = clk_prepare_enable(dwc3_imx->hsio_clk);  in dwc3_imx8mp_probe()
194 	dwc3_imx->suspend_clk = devm_clk_get(dev, "suspend");  in dwc3_imx8mp_probe()
195 	if (IS_ERR(dwc3_imx->suspend_clk)) {  in dwc3_imx8mp_probe()
196 		err = PTR_ERR(dwc3_imx->suspend_clk);  in dwc3_imx8mp_probe()
201 	err = clk_prepare_enable(dwc3_imx->suspend_clk);  in dwc3_imx8mp_probe()
212 	dwc3_imx->irq = irq;  in dwc3_imx8mp_probe()
224 		err = -ENODEV;  in dwc3_imx8mp_probe()
231 		dev_err(&pdev->dev, "failed to create dwc3 core\n");  in dwc3_imx8mp_probe()
235 	dwc3_imx->dwc3 = of_find_device_by_node(dwc3_np);  in dwc3_imx8mp_probe()
236 	if (!dwc3_imx->dwc3) {  in dwc3_imx8mp_probe()
238 		err = -ENODEV;  in dwc3_imx8mp_probe()
246 		dev_err(dev, "failed to request IRQ #%d --> %d\n", irq, err);  in dwc3_imx8mp_probe()
263 	clk_disable_unprepare(dwc3_imx->suspend_clk);  in dwc3_imx8mp_probe()
265 	clk_disable_unprepare(dwc3_imx->hsio_clk);  in dwc3_imx8mp_probe()
273 	struct device *dev = &pdev->dev;  in dwc3_imx8mp_remove()
278 	clk_disable_unprepare(dwc3_imx->suspend_clk);  in dwc3_imx8mp_remove()
279 	clk_disable_unprepare(dwc3_imx->hsio_clk);  in dwc3_imx8mp_remove()
288 	if (dwc3_imx->pm_suspended)  in dwc3_imx8mp_suspend()
292 	if (PMSG_IS_AUTO(msg) || device_may_wakeup(dwc3_imx->dev))  in dwc3_imx8mp_suspend()
295 	dwc3_imx->pm_suspended = true;  in dwc3_imx8mp_suspend()
303 	struct dwc3	*dwc = platform_get_drvdata(dwc3_imx->dwc3);  in dwc3_imx8mp_resume()
306 	if (!dwc3_imx->pm_suspended)  in dwc3_imx8mp_resume()
311 	dwc3_imx->pm_suspended = false;  in dwc3_imx8mp_resume()
316 	if (dwc3_imx->wakeup_pending) {  in dwc3_imx8mp_resume()
317 		dwc3_imx->wakeup_pending = false;  in dwc3_imx8mp_resume()
318 		if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_DEVICE) {  in dwc3_imx8mp_resume()
319 			pm_runtime_mark_last_busy(dwc->dev);  in dwc3_imx8mp_resume()
320 			pm_runtime_put_autosuspend(dwc->dev);  in dwc3_imx8mp_resume()
324 			 * clock to normal clock to detect connection.  in dwc3_imx8mp_resume()
328 		enable_irq(dwc3_imx->irq);  in dwc3_imx8mp_resume()
341 	if (device_may_wakeup(dwc3_imx->dev))  in dwc3_imx8mp_pm_suspend()
342 		enable_irq_wake(dwc3_imx->irq);  in dwc3_imx8mp_pm_suspend()
344 		clk_disable_unprepare(dwc3_imx->suspend_clk);  in dwc3_imx8mp_pm_suspend()
346 	clk_disable_unprepare(dwc3_imx->hsio_clk);  in dwc3_imx8mp_pm_suspend()
347 	dev_dbg(dev, "dwc3 imx8mp pm suspend.\n");  in dwc3_imx8mp_pm_suspend()
357 	if (device_may_wakeup(dwc3_imx->dev)) {  in dwc3_imx8mp_pm_resume()
358 		disable_irq_wake(dwc3_imx->irq);  in dwc3_imx8mp_pm_resume()
360 		ret = clk_prepare_enable(dwc3_imx->suspend_clk);  in dwc3_imx8mp_pm_resume()
365 	ret = clk_prepare_enable(dwc3_imx->hsio_clk);  in dwc3_imx8mp_pm_resume()
375 	dev_dbg(dev, "dwc3 imx8mp pm resume.\n");  in dwc3_imx8mp_pm_resume()
384 	dev_dbg(dev, "dwc3 imx8mp runtime suspend.\n");  in dwc3_imx8mp_runtime_suspend()
393 	dev_dbg(dev, "dwc3 imx8mp runtime resume.\n");  in dwc3_imx8mp_runtime_resume()
405 	{ .compatible = "fsl,imx8mp-dwc3", },
414 		.name	= "imx8mp-dwc3",
422 MODULE_ALIAS("platform:imx8mp-dwc3");
425 MODULE_DESCRIPTION("DesignWare USB3 imx8mp Glue Layer");