1 // SPDX-License-Identifier: GPL-2.0
11 #include <linux/dma-mapping.h>
15 #include <linux/usb/role.h>
50 	enum usb_role role;  member
56 	struct device *dev = glue->dev;  in mtk_musb_clks_get()
58 	glue->main = devm_clk_get(dev, "main");  in mtk_musb_clks_get()
59 	if (IS_ERR(glue->main)) {  in mtk_musb_clks_get()
61 		return PTR_ERR(glue->main);  in mtk_musb_clks_get()
64 	glue->mcu = devm_clk_get(dev, "mcu");  in mtk_musb_clks_get()
65 	if (IS_ERR(glue->mcu)) {  in mtk_musb_clks_get()
67 		return PTR_ERR(glue->mcu);  in mtk_musb_clks_get()
70 	glue->univpll = devm_clk_get(dev, "univpll");  in mtk_musb_clks_get()
71 	if (IS_ERR(glue->univpll)) {  in mtk_musb_clks_get()
73 		return PTR_ERR(glue->univpll);  in mtk_musb_clks_get()
83 	ret = clk_prepare_enable(glue->main);  in mtk_musb_clks_enable()
85 		dev_err(glue->dev, "failed to enable main clock\n");  in mtk_musb_clks_enable()
89 	ret = clk_prepare_enable(glue->mcu);  in mtk_musb_clks_enable()
91 		dev_err(glue->dev, "failed to enable mcu clock\n");  in mtk_musb_clks_enable()
95 	ret = clk_prepare_enable(glue->univpll);  in mtk_musb_clks_enable()
97 		dev_err(glue->dev, "failed to enable univpll clock\n");  in mtk_musb_clks_enable()
104 	clk_disable_unprepare(glue->mcu);  in mtk_musb_clks_enable()
106 	clk_disable_unprepare(glue->main);  in mtk_musb_clks_enable()
113 	clk_disable_unprepare(glue->univpll);  in mtk_musb_clks_disable()
114 	clk_disable_unprepare(glue->mcu);  in mtk_musb_clks_disable()
115 	clk_disable_unprepare(glue->main);  in mtk_musb_clks_disable()
118 static int mtk_otg_switch_set(struct mtk_glue *glue, enum usb_role role)  in mtk_otg_switch_set()  argument
120 	struct musb *musb = glue->musb;  in mtk_otg_switch_set()
121 	u8 devctl = readb(musb->mregs + MUSB_DEVCTL);  in mtk_otg_switch_set()
124 	if (role == glue->role)  in mtk_otg_switch_set()
127 	switch (role) {  in mtk_otg_switch_set()
129 		musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;  in mtk_otg_switch_set()
130 		glue->phy_mode = PHY_MODE_USB_HOST;  in mtk_otg_switch_set()
132 		if (glue->role == USB_ROLE_NONE)  in mtk_otg_switch_set()
133 			phy_power_on(glue->phy);  in mtk_otg_switch_set()
136 		musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);  in mtk_otg_switch_set()
140 		musb->xceiv->otg->state = OTG_STATE_B_IDLE;  in mtk_otg_switch_set()
141 		glue->phy_mode = PHY_MODE_USB_DEVICE;  in mtk_otg_switch_set()
144 		musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);  in mtk_otg_switch_set()
145 		if (glue->role == USB_ROLE_NONE)  in mtk_otg_switch_set()
146 			phy_power_on(glue->phy);  in mtk_otg_switch_set()
151 		glue->phy_mode = PHY_MODE_USB_OTG;  in mtk_otg_switch_set()
154 		musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);  in mtk_otg_switch_set()
155 		if (glue->role != USB_ROLE_NONE)  in mtk_otg_switch_set()
156 			phy_power_off(glue->phy);  in mtk_otg_switch_set()
160 		dev_err(glue->dev, "Invalid State\n");  in mtk_otg_switch_set()
161 		return -EINVAL;  in mtk_otg_switch_set()
164 	glue->role = new_role;  in mtk_otg_switch_set()
165 	phy_set_mode(glue->phy, glue->phy_mode);  in mtk_otg_switch_set()
170 static int musb_usb_role_sx_set(struct usb_role_switch *sw, enum usb_role role)  in musb_usb_role_sx_set()  argument
172 	return mtk_otg_switch_set(usb_role_switch_get_drvdata(sw), role);  in musb_usb_role_sx_set()
179 	return glue->role;  in musb_usb_role_sx_get()
188 	role_sx_desc.fwnode = dev_fwnode(glue->dev);  in mtk_otg_switch_init()
190 	glue->role_sw = usb_role_switch_register(glue->dev, &role_sx_desc);  in mtk_otg_switch_init()
192 	return PTR_ERR_OR_ZERO(glue->role_sw);  in mtk_otg_switch_init()
197 	return usb_role_switch_unregister(glue->role_sw);  in mtk_otg_switch_exit()
206 	spin_lock_irqsave(&musb->lock, flags);  in generic_interrupt()
207 	musb->int_usb = musb_clearb(musb->mregs, MUSB_INTRUSB);  in generic_interrupt()
208 	musb->int_rx = musb_clearw(musb->mregs, MUSB_INTRRX);  in generic_interrupt()
209 	musb->int_tx = musb_clearw(musb->mregs, MUSB_INTRTX);  in generic_interrupt()
211 	if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) {  in generic_interrupt()
213 		musb_ep_select(musb->mregs, 0);  in generic_interrupt()
214 		musb_writeb(musb->mregs, MUSB_FADDR, 0);  in generic_interrupt()
217 	if (musb->int_usb || musb->int_tx || musb->int_rx)  in generic_interrupt()
220 	spin_unlock_irqrestore(&musb->lock, flags);  in generic_interrupt()
231 	l1_ints = musb_readl(musb->mregs, USB_L1INTS) &  in mtk_musb_interrupt()
232 			musb_readl(musb->mregs, USB_L1INTM);  in mtk_musb_interrupt()
239 		retval = dma_controller_irq(irq, musb->dma_controller);  in mtk_musb_interrupt()
251 	u8 data;  in mtk_musb_clearb()  local
254 	data = musb_readb(addr, offset);  in mtk_musb_clearb()
255 	musb_writeb(addr, offset, data);  in mtk_musb_clearb()
256 	return data;  in mtk_musb_clearb()
261 	u16 data;  in mtk_musb_clearw()  local
264 	data = musb_readw(addr, offset);  in mtk_musb_clearw()
265 	musb_writew(addr, offset, data);  in mtk_musb_clearw()
266 	return data;  in mtk_musb_clearw()
271 	struct device *dev = musb->controller;  in mtk_musb_set_mode()
272 	struct mtk_glue *glue = dev_get_drvdata(dev->parent);  in mtk_musb_set_mode()
290 		dev_err(glue->dev, "Invalid mode request\n");  in mtk_musb_set_mode()
291 		return -EINVAL;  in mtk_musb_set_mode()
294 	if (glue->phy_mode == new_mode)  in mtk_musb_set_mode()
297 	if (musb->port_mode != MUSB_OTG) {  in mtk_musb_set_mode()
298 		dev_err(glue->dev, "Does not support changing modes\n");  in mtk_musb_set_mode()
299 		return -EINVAL;  in mtk_musb_set_mode()
308 	struct device *dev = musb->controller;  in mtk_musb_init()
309 	struct mtk_glue *glue = dev_get_drvdata(dev->parent);  in mtk_musb_init()
312 	glue->musb = musb;  in mtk_musb_init()
313 	musb->phy = glue->phy;  in mtk_musb_init()
314 	musb->xceiv = glue->xceiv;  in mtk_musb_init()
315 	musb->is_host = false;  in mtk_musb_init()
316 	musb->isr = mtk_musb_interrupt;  in mtk_musb_init()
319 	musb_writew(musb->mregs, MUSB_TXTOGEN, MTK_TOGGLE_EN);  in mtk_musb_init()
320 	musb_writew(musb->mregs, MUSB_RXTOGEN, MTK_TOGGLE_EN);  in mtk_musb_init()
322 	if (musb->port_mode == MUSB_OTG) {  in mtk_musb_init()
328 	ret = phy_init(glue->phy);  in mtk_musb_init()
332 	ret = phy_power_on(glue->phy);  in mtk_musb_init()
336 	phy_set_mode(glue->phy, glue->phy_mode);  in mtk_musb_init()
339 	musb_writel(musb->mregs, MUSB_HSDMA_INTR,  in mtk_musb_init()
342 	musb_writel(musb->mregs, USB_L1INTM, TX_INT_STATUS | RX_INT_STATUS |  in mtk_musb_init()
347 	phy_exit(glue->phy);  in mtk_musb_init()
355 	struct musb *musb = qh->hw_ep->musb;  in mtk_musb_get_toggle()
356 	u8 epnum = qh->hw_ep->epnum;  in mtk_musb_get_toggle()
359 	toggle = musb_readw(musb->mregs, is_out ? MUSB_TXTOG : MUSB_RXTOG);  in mtk_musb_get_toggle()
365 	struct musb *musb = qh->hw_ep->musb;  in mtk_musb_set_toggle()
366 	u8 epnum = qh->hw_ep->epnum;  in mtk_musb_set_toggle()
369 	toggle = usb_gettoggle(urb->dev, qh->epnum, is_out);  in mtk_musb_set_toggle()
372 		value = musb_readw(musb->mregs, MUSB_TXTOG);  in mtk_musb_set_toggle()
374 		musb_writew(musb->mregs, MUSB_TXTOG, value);  in mtk_musb_set_toggle()
376 		value = musb_readw(musb->mregs, MUSB_RXTOG);  in mtk_musb_set_toggle()
378 		musb_writew(musb->mregs, MUSB_RXTOG, value);  in mtk_musb_set_toggle()
386 	struct device *dev = musb->controller;  in mtk_musb_exit()
387 	struct mtk_glue *glue = dev_get_drvdata(dev->parent);  in mtk_musb_exit()
390 	phy_power_off(glue->phy);  in mtk_musb_exit()
391 	phy_exit(glue->phy);  in mtk_musb_exit()
445 	.name = "musb-hdrc",
455 	struct device *dev = &pdev->dev;  in mtk_musb_probe()
456 	struct device_node *np = dev->of_node;  in mtk_musb_probe()
461 		return -ENOMEM;  in mtk_musb_probe()
463 	glue->dev = dev;  in mtk_musb_probe()
466 		return -ENOMEM;  in mtk_musb_probe()
478 	pdata->config = &mtk_musb_hdrc_config;  in mtk_musb_probe()
479 	pdata->platform_ops = &mtk_musb_ops;  in mtk_musb_probe()
480 	pdata->mode = usb_get_dr_mode(dev);  in mtk_musb_probe()
483 		pdata->mode = USB_DR_MODE_HOST;  in mtk_musb_probe()
485 		pdata->mode = USB_DR_MODE_PERIPHERAL;  in mtk_musb_probe()
487 	switch (pdata->mode) {  in mtk_musb_probe()
489 		glue->phy_mode = PHY_MODE_USB_HOST;  in mtk_musb_probe()
490 		glue->role = USB_ROLE_HOST;  in mtk_musb_probe()
493 		glue->phy_mode = PHY_MODE_USB_DEVICE;  in mtk_musb_probe()
494 		glue->role = USB_ROLE_DEVICE;  in mtk_musb_probe()
497 		glue->phy_mode = PHY_MODE_USB_OTG;  in mtk_musb_probe()
498 		glue->role = USB_ROLE_NONE;  in mtk_musb_probe()
501 		dev_err(&pdev->dev, "Error 'dr_mode' property\n");  in mtk_musb_probe()
502 		return -EINVAL;  in mtk_musb_probe()
505 	glue->phy = devm_of_phy_get_by_index(dev, np, 0);  in mtk_musb_probe()
506 	if (IS_ERR(glue->phy)) {  in mtk_musb_probe()
508 			PTR_ERR(glue->phy));  in mtk_musb_probe()
509 		return PTR_ERR(glue->phy);  in mtk_musb_probe()
512 	glue->usb_phy = usb_phy_generic_register();  in mtk_musb_probe()
513 	if (IS_ERR(glue->usb_phy)) {  in mtk_musb_probe()
514 		dev_err(dev, "fail to registering usb-phy %ld\n",  in mtk_musb_probe()
515 			PTR_ERR(glue->usb_phy));  in mtk_musb_probe()
516 		return PTR_ERR(glue->usb_phy);  in mtk_musb_probe()
519 	glue->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);  in mtk_musb_probe()
520 	if (IS_ERR(glue->xceiv)) {  in mtk_musb_probe()
521 		dev_err(dev, "fail to getting usb-phy %d\n", ret);  in mtk_musb_probe()
522 		ret = PTR_ERR(glue->xceiv);  in mtk_musb_probe()
536 	pinfo.res = pdev->resource;  in mtk_musb_probe()
537 	pinfo.num_res = pdev->num_resources;  in mtk_musb_probe()
538 	pinfo.data = pdata;  in mtk_musb_probe()
541 	glue->musb_pdev = platform_device_register_full(&pinfo);  in mtk_musb_probe()
542 	if (IS_ERR(glue->musb_pdev)) {  in mtk_musb_probe()
543 		ret = PTR_ERR(glue->musb_pdev);  in mtk_musb_probe()
556 	usb_phy_generic_unregister(glue->usb_phy);  in mtk_musb_probe()
563 	struct platform_device *usb_phy = glue->usb_phy;  in mtk_musb_remove()
565 	platform_device_unregister(glue->musb_pdev);  in mtk_musb_remove()
573 	{.compatible = "mediatek,mtk-musb",},
583 		   .name = "musb-mtk",