1 // SPDX-License-Identifier: GPL-2.0
4  * Inspired by dwc3-of-simple.c
68 	struct platform_device	*dwc3;  member
119 		dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_SS_PHY_CTRL,  in dwc3_qcom_vbus_overrride_enable()
121 		dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_HS_PHY_CTRL,  in dwc3_qcom_vbus_overrride_enable()
124 		dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_SS_PHY_CTRL,  in dwc3_qcom_vbus_overrride_enable()
126 		dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_HS_PHY_CTRL,  in dwc3_qcom_vbus_overrride_enable()
138 	qcom->mode = event ? USB_DR_MODE_PERIPHERAL : USB_DR_MODE_HOST;  in dwc3_qcom_vbus_notifier()
150 	qcom->mode = event ? USB_DR_MODE_HOST : USB_DR_MODE_PERIPHERAL;  in dwc3_qcom_host_notifier()
157 	struct device		*dev = qcom->dev;  in dwc3_qcom_register_extcon()
161 	if (!of_property_read_bool(dev->of_node, "extcon"))  in dwc3_qcom_register_extcon()
164 	qcom->edev = extcon_get_edev_by_phandle(dev, 0);  in dwc3_qcom_register_extcon()
165 	if (IS_ERR(qcom->edev))  in dwc3_qcom_register_extcon()
166 		return PTR_ERR(qcom->edev);  in dwc3_qcom_register_extcon()
168 	qcom->vbus_nb.notifier_call = dwc3_qcom_vbus_notifier;  in dwc3_qcom_register_extcon()
170 	qcom->host_edev = extcon_get_edev_by_phandle(dev, 1);  in dwc3_qcom_register_extcon()
171 	if (IS_ERR(qcom->host_edev))  in dwc3_qcom_register_extcon()
172 		qcom->host_edev = NULL;  in dwc3_qcom_register_extcon()
174 	ret = devm_extcon_register_notifier(dev, qcom->edev, EXTCON_USB,  in dwc3_qcom_register_extcon()
175 					    &qcom->vbus_nb);  in dwc3_qcom_register_extcon()
181 	if (qcom->host_edev)  in dwc3_qcom_register_extcon()
182 		host_edev = qcom->host_edev;  in dwc3_qcom_register_extcon()
184 		host_edev = qcom->edev;  in dwc3_qcom_register_extcon()
186 	qcom->host_nb.notifier_call = dwc3_qcom_host_notifier;  in dwc3_qcom_register_extcon()
188 					    &qcom->host_nb);  in dwc3_qcom_register_extcon()
195 	if (extcon_get_state(qcom->edev, EXTCON_USB) ||  in dwc3_qcom_register_extcon()
197 		dwc3_qcom_vbus_notifier(&qcom->vbus_nb, true, qcom->edev);  in dwc3_qcom_register_extcon()
199 		dwc3_qcom_vbus_notifier(&qcom->vbus_nb, false, qcom->edev);  in dwc3_qcom_register_extcon()
208 	ret = icc_enable(qcom->icc_path_ddr);  in dwc3_qcom_interconnect_enable()
212 	ret = icc_enable(qcom->icc_path_apps);  in dwc3_qcom_interconnect_enable()
214 		icc_disable(qcom->icc_path_ddr);  in dwc3_qcom_interconnect_enable()
223 	ret = icc_disable(qcom->icc_path_ddr);  in dwc3_qcom_interconnect_disable()
227 	ret = icc_disable(qcom->icc_path_apps);  in dwc3_qcom_interconnect_disable()
229 		icc_enable(qcom->icc_path_ddr);  in dwc3_qcom_interconnect_disable()
235  * dwc3_qcom_interconnect_init() - Get interconnect path handles
242 	struct device *dev = qcom->dev;  in dwc3_qcom_interconnect_init()
245 	qcom->icc_path_ddr = of_icc_get(dev, "usb-ddr");  in dwc3_qcom_interconnect_init()
246 	if (IS_ERR(qcom->icc_path_ddr)) {  in dwc3_qcom_interconnect_init()
247 		dev_err(dev, "failed to get usb-ddr path: %ld\n",  in dwc3_qcom_interconnect_init()
248 			PTR_ERR(qcom->icc_path_ddr));  in dwc3_qcom_interconnect_init()
249 		return PTR_ERR(qcom->icc_path_ddr);  in dwc3_qcom_interconnect_init()
252 	qcom->icc_path_apps = of_icc_get(dev, "apps-usb");  in dwc3_qcom_interconnect_init()
253 	if (IS_ERR(qcom->icc_path_apps)) {  in dwc3_qcom_interconnect_init()
254 		dev_err(dev, "failed to get apps-usb path: %ld\n",  in dwc3_qcom_interconnect_init()
255 				PTR_ERR(qcom->icc_path_apps));  in dwc3_qcom_interconnect_init()
256 		return PTR_ERR(qcom->icc_path_apps);  in dwc3_qcom_interconnect_init()
259 	if (usb_get_maximum_speed(&qcom->dwc3->dev) >= USB_SPEED_SUPER ||  in dwc3_qcom_interconnect_init()
260 			usb_get_maximum_speed(&qcom->dwc3->dev) == USB_SPEED_UNKNOWN)  in dwc3_qcom_interconnect_init()
261 		ret = icc_set_bw(qcom->icc_path_ddr,  in dwc3_qcom_interconnect_init()
264 		ret = icc_set_bw(qcom->icc_path_ddr,  in dwc3_qcom_interconnect_init()
268 		dev_err(dev, "failed to set bandwidth for usb-ddr path: %d\n", ret);  in dwc3_qcom_interconnect_init()
272 	ret = icc_set_bw(qcom->icc_path_apps,  in dwc3_qcom_interconnect_init()
275 		dev_err(dev, "failed to set bandwidth for apps-usb path: %d\n", ret);  in dwc3_qcom_interconnect_init()
283  * dwc3_qcom_interconnect_exit() - Release interconnect path handles
290 	icc_put(qcom->icc_path_ddr);  in dwc3_qcom_interconnect_exit()
291 	icc_put(qcom->icc_path_apps);  in dwc3_qcom_interconnect_exit()
296 	if (qcom->hs_phy_irq) {  in dwc3_qcom_disable_interrupts()
297 		disable_irq_wake(qcom->hs_phy_irq);  in dwc3_qcom_disable_interrupts()
298 		disable_irq_nosync(qcom->hs_phy_irq);  in dwc3_qcom_disable_interrupts()
301 	if (qcom->dp_hs_phy_irq) {  in dwc3_qcom_disable_interrupts()
302 		disable_irq_wake(qcom->dp_hs_phy_irq);  in dwc3_qcom_disable_interrupts()
303 		disable_irq_nosync(qcom->dp_hs_phy_irq);  in dwc3_qcom_disable_interrupts()
306 	if (qcom->dm_hs_phy_irq) {  in dwc3_qcom_disable_interrupts()
307 		disable_irq_wake(qcom->dm_hs_phy_irq);  in dwc3_qcom_disable_interrupts()
308 		disable_irq_nosync(qcom->dm_hs_phy_irq);  in dwc3_qcom_disable_interrupts()
311 	if (qcom->ss_phy_irq) {  in dwc3_qcom_disable_interrupts()
312 		disable_irq_wake(qcom->ss_phy_irq);  in dwc3_qcom_disable_interrupts()
313 		disable_irq_nosync(qcom->ss_phy_irq);  in dwc3_qcom_disable_interrupts()
319 	if (qcom->hs_phy_irq) {  in dwc3_qcom_enable_interrupts()
320 		enable_irq(qcom->hs_phy_irq);  in dwc3_qcom_enable_interrupts()
321 		enable_irq_wake(qcom->hs_phy_irq);  in dwc3_qcom_enable_interrupts()
324 	if (qcom->dp_hs_phy_irq) {  in dwc3_qcom_enable_interrupts()
325 		enable_irq(qcom->dp_hs_phy_irq);  in dwc3_qcom_enable_interrupts()
326 		enable_irq_wake(qcom->dp_hs_phy_irq);  in dwc3_qcom_enable_interrupts()
329 	if (qcom->dm_hs_phy_irq) {  in dwc3_qcom_enable_interrupts()
330 		enable_irq(qcom->dm_hs_phy_irq);  in dwc3_qcom_enable_interrupts()
331 		enable_irq_wake(qcom->dm_hs_phy_irq);  in dwc3_qcom_enable_interrupts()
334 	if (qcom->ss_phy_irq) {  in dwc3_qcom_enable_interrupts()
335 		enable_irq(qcom->ss_phy_irq);  in dwc3_qcom_enable_interrupts()
336 		enable_irq_wake(qcom->ss_phy_irq);  in dwc3_qcom_enable_interrupts()
345 	if (qcom->is_suspended)  in dwc3_qcom_suspend()
348 	val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG);  in dwc3_qcom_suspend()
350 		dev_err(qcom->dev, "HS-PHY not in L2\n");  in dwc3_qcom_suspend()
352 	for (i = qcom->num_clocks - 1; i >= 0; i--)  in dwc3_qcom_suspend()
353 		clk_disable_unprepare(qcom->clks[i]);  in dwc3_qcom_suspend()
357 		dev_warn(qcom->dev, "failed to disable interconnect: %d\n", ret);  in dwc3_qcom_suspend()
359 	qcom->is_suspended = true;  in dwc3_qcom_suspend()
370 	if (!qcom->is_suspended)  in dwc3_qcom_resume()
375 	for (i = 0; i < qcom->num_clocks; i++) {  in dwc3_qcom_resume()
376 		ret = clk_prepare_enable(qcom->clks[i]);  in dwc3_qcom_resume()
378 			while (--i >= 0)  in dwc3_qcom_resume()
379 				clk_disable_unprepare(qcom->clks[i]);  in dwc3_qcom_resume()
386 		dev_warn(qcom->dev, "failed to enable interconnect: %d\n", ret);  in dwc3_qcom_resume()
389 	dwc3_qcom_setbits(qcom->qscratch_base, PWR_EVNT_IRQ_STAT_REG,  in dwc3_qcom_resume()
392 	qcom->is_suspended = false;  in dwc3_qcom_resume()
400 	struct dwc3	*dwc = platform_get_drvdata(qcom->dwc3);  in qcom_dwc3_resume_irq()
403 	if (qcom->pm_suspended)  in qcom_dwc3_resume_irq()
406 	if (dwc->xhci)  in qcom_dwc3_resume_irq()
407 		pm_runtime_resume(&dwc->xhci->dev);  in qcom_dwc3_resume_irq()
414 	/* Configure dwc3 to use UTMI clock as PIPE clock not present */  in dwc3_qcom_select_utmi_clk()
415 	dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG,  in dwc3_qcom_select_utmi_clk()
420 	dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG,  in dwc3_qcom_select_utmi_clk()
425 	dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG,  in dwc3_qcom_select_utmi_clk()
432 	struct device_node *np = pdev->dev.of_node;  in dwc3_qcom_get_irq()
446 	const struct dwc3_acpi_pdata *pdata = qcom->acpi_pdata;  in dwc3_qcom_setup_irq()
451 				pdata ? pdata->hs_phy_irq_index : -1);  in dwc3_qcom_setup_irq()
455 		ret = devm_request_threaded_irq(qcom->dev, irq, NULL,  in dwc3_qcom_setup_irq()
460 			dev_err(qcom->dev, "hs_phy_irq failed: %d\n", ret);  in dwc3_qcom_setup_irq()
463 		qcom->hs_phy_irq = irq;  in dwc3_qcom_setup_irq()
467 				pdata ? pdata->dp_hs_phy_irq_index : -1);  in dwc3_qcom_setup_irq()
470 		ret = devm_request_threaded_irq(qcom->dev, irq, NULL,  in dwc3_qcom_setup_irq()
475 			dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret);  in dwc3_qcom_setup_irq()
478 		qcom->dp_hs_phy_irq = irq;  in dwc3_qcom_setup_irq()
482 				pdata ? pdata->dm_hs_phy_irq_index : -1);  in dwc3_qcom_setup_irq()
485 		ret = devm_request_threaded_irq(qcom->dev, irq, NULL,  in dwc3_qcom_setup_irq()
490 			dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret);  in dwc3_qcom_setup_irq()
493 		qcom->dm_hs_phy_irq = irq;  in dwc3_qcom_setup_irq()
497 				pdata ? pdata->ss_phy_irq_index : -1);  in dwc3_qcom_setup_irq()
500 		ret = devm_request_threaded_irq(qcom->dev, irq, NULL,  in dwc3_qcom_setup_irq()
505 			dev_err(qcom->dev, "ss_phy_irq failed: %d\n", ret);  in dwc3_qcom_setup_irq()
508 		qcom->ss_phy_irq = irq;  in dwc3_qcom_setup_irq()
516 	struct device		*dev = qcom->dev;  in dwc3_qcom_clk_init()
517 	struct device_node	*np = dev->of_node;  in dwc3_qcom_clk_init()
526 	qcom->num_clocks = count;  in dwc3_qcom_clk_init()
528 	qcom->clks = devm_kcalloc(dev, qcom->num_clocks,  in dwc3_qcom_clk_init()
530 	if (!qcom->clks)  in dwc3_qcom_clk_init()
531 		return -ENOMEM;  in dwc3_qcom_clk_init()
533 	for (i = 0; i < qcom->num_clocks; i++) {  in dwc3_qcom_clk_init()
539 			while (--i >= 0)  in dwc3_qcom_clk_init()
540 				clk_put(qcom->clks[i]);  in dwc3_qcom_clk_init()
546 			while (--i >= 0) {  in dwc3_qcom_clk_init()
547 				clk_disable_unprepare(qcom->clks[i]);  in dwc3_qcom_clk_init()
548 				clk_put(qcom->clks[i]);  in dwc3_qcom_clk_init()
555 		qcom->clks[i] = clk;  in dwc3_qcom_clk_init()
569 	struct device		*dev = &pdev->dev;  in dwc3_qcom_acpi_register_core()
574 	qcom->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);  in dwc3_qcom_acpi_register_core()
575 	if (!qcom->dwc3)  in dwc3_qcom_acpi_register_core()
576 		return -ENOMEM;  in dwc3_qcom_acpi_register_core()
578 	qcom->dwc3->dev.parent = dev;  in dwc3_qcom_acpi_register_core()
579 	qcom->dwc3->dev.type = dev->type;  in dwc3_qcom_acpi_register_core()
580 	qcom->dwc3->dev.dma_mask = dev->dma_mask;  in dwc3_qcom_acpi_register_core()
581 	qcom->dwc3->dev.dma_parms = dev->dma_parms;  in dwc3_qcom_acpi_register_core()
582 	qcom->dwc3->dev.coherent_dma_mask = dev->coherent_dma_mask;  in dwc3_qcom_acpi_register_core()
586 		return -ENOMEM;  in dwc3_qcom_acpi_register_core()
590 		dev_err(&pdev->dev, "failed to get memory resource\n");  in dwc3_qcom_acpi_register_core()
591 		ret = -ENODEV;  in dwc3_qcom_acpi_register_core()
595 	child_res[0].flags = res->flags;  in dwc3_qcom_acpi_register_core()
596 	child_res[0].start = res->start;  in dwc3_qcom_acpi_register_core()
598 		qcom->acpi_pdata->dwc3_core_base_size;  in dwc3_qcom_acpi_register_core()
604 	ret = platform_device_add_resources(qcom->dwc3, child_res, 2);  in dwc3_qcom_acpi_register_core()
606 		dev_err(&pdev->dev, "failed to add resources\n");  in dwc3_qcom_acpi_register_core()
610 	ret = platform_device_add_properties(qcom->dwc3,  in dwc3_qcom_acpi_register_core()
613 		dev_err(&pdev->dev, "failed to add properties\n");  in dwc3_qcom_acpi_register_core()
617 	ret = platform_device_add(qcom->dwc3);  in dwc3_qcom_acpi_register_core()
619 		dev_err(&pdev->dev, "failed to add device\n");  in dwc3_qcom_acpi_register_core()
629 	struct device_node	*np = pdev->dev.of_node, *dwc3_np;  in dwc3_qcom_of_register_core()
630 	struct device		*dev = &pdev->dev;  in dwc3_qcom_of_register_core()
633 	dwc3_np = of_get_child_by_name(np, "dwc3");  in dwc3_qcom_of_register_core()
635 		dev_err(dev, "failed to find dwc3 core child\n");  in dwc3_qcom_of_register_core()
636 		return -ENODEV;  in dwc3_qcom_of_register_core()
641 		dev_err(dev, "failed to register dwc3 core - %d\n", ret);  in dwc3_qcom_of_register_core()
645 	qcom->dwc3 = of_find_device_by_node(dwc3_np);  in dwc3_qcom_of_register_core()
646 	if (!qcom->dwc3) {  in dwc3_qcom_of_register_core()
647 		dev_err(dev, "failed to get dwc3 platform device\n");  in dwc3_qcom_of_register_core()
648 		return -ENODEV;  in dwc3_qcom_of_register_core()
656 	struct device_node	*np = pdev->dev.of_node;  in dwc3_qcom_probe()
657 	struct device		*dev = &pdev->dev;  in dwc3_qcom_probe()
663 	qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL);  in dwc3_qcom_probe()
665 		return -ENOMEM;  in dwc3_qcom_probe()
668 	qcom->dev = &pdev->dev;  in dwc3_qcom_probe()
671 		qcom->acpi_pdata = acpi_device_get_match_data(dev);  in dwc3_qcom_probe()
672 		if (!qcom->acpi_pdata) {  in dwc3_qcom_probe()
673 			dev_err(&pdev->dev, "no supporting ACPI device data\n");  in dwc3_qcom_probe()
674 			return -EINVAL;  in dwc3_qcom_probe()
678 	qcom->resets = devm_reset_control_array_get_optional_exclusive(dev);  in dwc3_qcom_probe()
679 	if (IS_ERR(qcom->resets)) {  in dwc3_qcom_probe()
680 		ret = PTR_ERR(qcom->resets);  in dwc3_qcom_probe()
681 		dev_err(&pdev->dev, "failed to get resets, err=%d\n", ret);  in dwc3_qcom_probe()
685 	ret = reset_control_assert(qcom->resets);  in dwc3_qcom_probe()
687 		dev_err(&pdev->dev, "failed to assert resets, err=%d\n", ret);  in dwc3_qcom_probe()
693 	ret = reset_control_deassert(qcom->resets);  in dwc3_qcom_probe()
695 		dev_err(&pdev->dev, "failed to deassert resets, err=%d\n", ret);  in dwc3_qcom_probe()
712 			return -ENOMEM;  in dwc3_qcom_probe()
714 		parent_res->start = res->start +  in dwc3_qcom_probe()
715 			qcom->acpi_pdata->qscratch_base_offset;  in dwc3_qcom_probe()
716 		parent_res->end = parent_res->start +  in dwc3_qcom_probe()
717 			qcom->acpi_pdata->qscratch_base_size;  in dwc3_qcom_probe()
720 	qcom->qscratch_base = devm_ioremap_resource(dev, parent_res);  in dwc3_qcom_probe()
721 	if (IS_ERR(qcom->qscratch_base)) {  in dwc3_qcom_probe()
723 		ret = PTR_ERR(qcom->qscratch_base);  in dwc3_qcom_probe()
734 	 * Disable pipe_clk requirement if specified. Used when dwc3  in dwc3_qcom_probe()
738 				"qcom,select-utmi-as-pipe-clk");  in dwc3_qcom_probe()
748 		dev_err(dev, "failed to register DWC3 Core, err=%d\n", ret);  in dwc3_qcom_probe()
756 	qcom->mode = usb_get_dr_mode(&qcom->dwc3->dev);  in dwc3_qcom_probe()
759 	if (qcom->mode == USB_DR_MODE_PERIPHERAL)  in dwc3_qcom_probe()
767 	device_init_wakeup(&pdev->dev, 1);  in dwc3_qcom_probe()
768 	qcom->is_suspended = false;  in dwc3_qcom_probe()
779 		of_platform_depopulate(&pdev->dev);  in dwc3_qcom_probe()
783 	for (i = qcom->num_clocks - 1; i >= 0; i--) {  in dwc3_qcom_probe()
784 		clk_disable_unprepare(qcom->clks[i]);  in dwc3_qcom_probe()
785 		clk_put(qcom->clks[i]);  in dwc3_qcom_probe()
788 	reset_control_assert(qcom->resets);  in dwc3_qcom_probe()
796 	struct device *dev = &pdev->dev;  in dwc3_qcom_remove()
801 	for (i = qcom->num_clocks - 1; i >= 0; i--) {  in dwc3_qcom_remove()
802 		clk_disable_unprepare(qcom->clks[i]);  in dwc3_qcom_remove()
803 		clk_put(qcom->clks[i]);  in dwc3_qcom_remove()
805 	qcom->num_clocks = 0;  in dwc3_qcom_remove()
808 	reset_control_assert(qcom->resets);  in dwc3_qcom_remove()
823 		qcom->pm_suspended = true;  in dwc3_qcom_pm_suspend()
835 		qcom->pm_suspended = false;  in dwc3_qcom_pm_resume()
861 	{ .compatible = "qcom,dwc3" },
862 	{ .compatible = "qcom,msm8996-dwc3" },
863 	{ .compatible = "qcom,msm8998-dwc3" },
864 	{ .compatible = "qcom,sdm845-dwc3" },
891 		.name	= "dwc3-qcom",
901 MODULE_DESCRIPTION("DesignWare DWC3 QCOM Glue Driver");