1 // SPDX-License-Identifier: GPL-1.0+
11 #include <linux/gpio/consumer.h>
33  *			+-------+	+-----------+
34  *			| pipe0 |------>| fifo pio  |
35  * +------------+	+-------+	+-----------+
36  * | mod_gadget |=====> | pipe1 |--+
37  * +------------+	+-------+  |	+-----------+
38  *			| pipe2 |  |  +-| fifo dma0 |
39  * +------------+	+-------+  |  |	+-----------+
40  * | mod_host   |	| pipe3 |<-|--+
41  * +------------+	+-------+  |	+-----------+
42  *			| ....  |  +--->| fifo dma1 |
43  *			| ....  |	+-----------+
54 	(!(priv) ? -ENODEV :			\
55 	 !((priv)->pfunc->func) ? 0 :		\
56 	 (priv)->pfunc->func(args))
63 	return ioread16(priv->base + reg);  in usbhs_read()
68 	iowrite16(data, priv->base + reg);  in usbhs_write()
83 	return dev_get_drvdata(&pdev->dev);  in usbhs_pdev_to_priv()
107 	 * - select Host mode  in usbhs_sys_host_ctrl()
108 	 * - D+ Line/D- Line Pull-down  in usbhs_sys_host_ctrl()
127 	 * - select Function mode  in usbhs_sys_function_ctrl()
128 	 * - D+ Line Pull-up is disabled  in usbhs_sys_function_ctrl()
129 	 *      When D+ Line Pull-up is enabled,  in usbhs_sys_function_ctrl()
161 	req->bRequest		= (val >> 8) & 0xFF;  in usbhs_usbreq_get_val()
162 	req->bRequestType	= (val >> 0) & 0xFF;  in usbhs_usbreq_get_val()
164 	req->wValue	= cpu_to_le16(usbhs_read(priv, USBVAL));  in usbhs_usbreq_get_val()
165 	req->wIndex	= cpu_to_le16(usbhs_read(priv, USBINDX));  in usbhs_usbreq_get_val()
166 	req->wLength	= cpu_to_le16(usbhs_read(priv, USBLENG));  in usbhs_usbreq_get_val()
171 	usbhs_write(priv, USBREQ,  (req->bRequest << 8) | req->bRequestType);  in usbhs_usbreq_set_val()
172 	usbhs_write(priv, USBVAL,  le16_to_cpu(req->wValue));  in usbhs_usbreq_set_val()
173 	usbhs_write(priv, USBINDX, le16_to_cpu(req->wIndex));  in usbhs_usbreq_set_val()
174 	usbhs_write(priv, USBLENG, le16_to_cpu(req->wLength));  in usbhs_usbreq_set_val()
241 		return -EIO;  in usbhs_set_device_config()
246 		return -EIO;  in usbhs_set_device_config()
261 		return -EIO;  in usbhs_set_device_config()
295 	return priv->dparam.multi_clks;  in usbhsc_is_multi_clks()
304 	priv->clks[0] = of_clk_get(dev_of_node(dev), 0);  in usbhsc_clk_get()
305 	if (IS_ERR(priv->clks[0]))  in usbhsc_clk_get()
306 		return PTR_ERR(priv->clks[0]);  in usbhsc_clk_get()
310 	 * value if it's -ENOENT or not.  in usbhsc_clk_get()
312 	priv->clks[1] = of_clk_get(dev_of_node(dev), 1);  in usbhsc_clk_get()
313 	if (PTR_ERR(priv->clks[1]) == -ENOENT)  in usbhsc_clk_get()
314 		priv->clks[1] = NULL;  in usbhsc_clk_get()
315 	else if (IS_ERR(priv->clks[1])) {  in usbhsc_clk_get()
316 		clk_put(priv->clks[0]);  in usbhsc_clk_get()
317 		return PTR_ERR(priv->clks[1]);  in usbhsc_clk_get()
330 	for (i = 0; i < ARRAY_SIZE(priv->clks); i++)  in usbhsc_clk_put()
331 		clk_put(priv->clks[i]);  in usbhsc_clk_put()
341 	for (i = 0; i < ARRAY_SIZE(priv->clks); i++) {  in usbhsc_clk_prepare_enable()
342 		ret = clk_prepare_enable(priv->clks[i]);  in usbhsc_clk_prepare_enable()
344 			while (--i >= 0)  in usbhsc_clk_prepare_enable()
345 				clk_disable_unprepare(priv->clks[i]);  in usbhsc_clk_prepare_enable()
360 	for (i = 0; i < ARRAY_SIZE(priv->clks); i++)  in usbhsc_clk_disable_unprepare()
361 		clk_disable_unprepare(priv->clks[i]);  in usbhsc_clk_disable_unprepare()
368 /* commonly used on old SH-Mobile and RZ/G2L family SoCs */
382 /* commonly used on newer SH-Mobile and R-Car SoCs */
419 		usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);  in usbhsc_power_ctrl()
428 		usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);  in usbhsc_power_ctrl()
461 		if (priv->edev) {  in usbhsc_hotplug()
462 			cable = extcon_get_state(priv->edev, EXTCON_USB_HOST);  in usbhsc_hotplug()
465 				dev_info(&pdev->dev,  in usbhsc_hotplug()
475 		dev_dbg(&pdev->dev, "%s enable\n", __func__);  in usbhsc_hotplug()
489 		dev_dbg(&pdev->dev, "%s disable\n", __func__);  in usbhsc_hotplug()
501 		usbhs_mod_change(priv, -1);  in usbhsc_hotplug()
529 	schedule_delayed_work(&priv->notify_hotplug_work,  in usbhsc_schedule_notify_hotplug()
539 		.compatible = "renesas,usbhs-r8a774c0",
543 		.compatible = "renesas,usbhs-r8a7790",
547 		.compatible = "renesas,usbhs-r8a7791",
551 		.compatible = "renesas,usbhs-r8a7794",
555 		.compatible = "renesas,usbhs-r8a7795",
559 		.compatible = "renesas,usbhs-r8a7796",
563 		.compatible = "renesas,usbhs-r8a77990",
567 		.compatible = "renesas,usbhs-r8a77995",
571 		.compatible = "renesas,usbhs-r9a07g043",
575 		.compatible = "renesas,usbhs-r9a07g044",
579 		.compatible = "renesas,usbhs-r9a07g054",
583 		.compatible = "renesas,rcar-gen2-usbhs",
587 		.compatible = "renesas,rcar-gen3-usbhs",
591 		.compatible = "renesas,rza1-usbhs",
595 		.compatible = "renesas,rza2-usbhs",
599 		.compatible = "renesas,rzg2l-usbhs",
610 	struct device *dev = &pdev->dev;  in usbhs_probe()
620 			return dev_err_probe(dev, -EINVAL, "no platform info\n");  in usbhs_probe()
631 		return -ENOMEM;  in usbhs_probe()
633 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in usbhs_probe()
634 	if (IS_ERR(priv->base))  in usbhs_probe()
635 		return PTR_ERR(priv->base);  in usbhs_probe()
638 		priv->edev = extcon_get_edev_by_phandle(dev, 0);  in usbhs_probe()
639 		if (IS_ERR(priv->edev))  in usbhs_probe()
640 			return PTR_ERR(priv->edev);  in usbhs_probe()
643 	priv->rsts = devm_reset_control_array_get_optional_shared(dev);  in usbhs_probe()
644 	if (IS_ERR(priv->rsts))  in usbhs_probe()
645 		return PTR_ERR(priv->rsts);  in usbhs_probe()
651 	priv->dparam = info->driver_param;  in usbhs_probe()
653 	if (!info->platform_callback.get_id) {  in usbhs_probe()
655 		return -EINVAL;  in usbhs_probe()
657 	priv->pfunc = &info->platform_callback;  in usbhs_probe()
661 		priv->dparam.pipe_configs = usbhsc_new_pipe;  in usbhs_probe()
662 		priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);  in usbhs_probe()
663 	} else if (!priv->dparam.pipe_configs) {  in usbhs_probe()
664 		priv->dparam.pipe_configs = usbhsc_default_pipe;  in usbhs_probe()
665 		priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe);  in usbhs_probe()
667 	if (!priv->dparam.pio_dma_border)  in usbhs_probe()
668 		priv->dparam.pio_dma_border = 64; /* 64byte */  in usbhs_probe()
670 		priv->dparam.buswait_bwait = tmp;  in usbhs_probe()
677 	if (priv->pfunc->get_vbus)  in usbhs_probe()
683 	priv->irq = irq;  in usbhs_probe()
684 	priv->pdev	= pdev;  in usbhs_probe()
685 	INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);  in usbhs_probe()
704 	ret = reset_control_deassert(priv->rsts);  in usbhs_probe()
718 	/* check GPIO determining if USB function should be enabled */  in usbhs_probe()
722 			dev_warn(dev, "USB function not selected (GPIO)\n");  in usbhs_probe()
723 			ret = -ENOTSUPP;  in usbhs_probe()
765 	reset_control_assert(priv->rsts);  in usbhs_probe()
782 	dev_dbg(&pdev->dev, "usb remove\n");  in usbhs_remove()
784 	flush_delayed_work(&priv->notify_hotplug_work);  in usbhs_remove()
790 	pm_runtime_disable(&pdev->dev);  in usbhs_remove()
794 	reset_control_assert(priv->rsts);  in usbhs_remove()
807 		usbhs_mod_change(priv, -1);  in usbhsc_suspend()