1 // SPDX-License-Identifier: GPL-2.0+
18 #include <linux/phy/phy-sun4i-usb.h>
95 	if (!test_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))  in sunxi_musb_work()
98 	if (test_and_clear_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags)) {  in sunxi_musb_work()
99 		struct musb *musb = glue->musb;  in sunxi_musb_work()
103 		spin_lock_irqsave(&musb->lock, flags);  in sunxi_musb_work()
105 		devctl = readb(musb->mregs + SUNXI_MUSB_DEVCTL);  in sunxi_musb_work()
106 		if (test_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags)) {  in sunxi_musb_work()
107 			set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);  in sunxi_musb_work()
108 			musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;  in sunxi_musb_work()
112 			clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);  in sunxi_musb_work()
113 			musb->xceiv->otg->state = OTG_STATE_B_IDLE;  in sunxi_musb_work()
117 		writeb(devctl, musb->mregs + SUNXI_MUSB_DEVCTL);  in sunxi_musb_work()
119 		spin_unlock_irqrestore(&musb->lock, flags);  in sunxi_musb_work()
122 	vbus_on = test_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);  in sunxi_musb_work()
123 	phy_on = test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);  in sunxi_musb_work()
127 			phy_power_on(glue->phy);  in sunxi_musb_work()
128 			set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);  in sunxi_musb_work()
130 			phy_power_off(glue->phy);  in sunxi_musb_work()
131 			clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);  in sunxi_musb_work()
135 	if (test_and_clear_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags))  in sunxi_musb_work()
136 		phy_set_mode(glue->phy, glue->phy_mode);  in sunxi_musb_work()
141 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_set_vbus()
144 		set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);  in sunxi_musb_set_vbus()
145 		musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;  in sunxi_musb_set_vbus()
147 		clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);  in sunxi_musb_set_vbus()
150 	schedule_work(&glue->work);  in sunxi_musb_set_vbus()
155 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_pre_root_reset_end()
157 	sun4i_usb_phy_set_squelch_detect(glue->phy, false);  in sunxi_musb_pre_root_reset_end()
162 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_post_root_reset_end()
164 	sun4i_usb_phy_set_squelch_detect(glue->phy, true);  in sunxi_musb_post_root_reset_end()
172 	spin_lock_irqsave(&musb->lock, flags);  in sunxi_musb_interrupt()
174 	musb->int_usb = readb(musb->mregs + SUNXI_MUSB_INTRUSB);  in sunxi_musb_interrupt()
175 	if (musb->int_usb)  in sunxi_musb_interrupt()
176 		writeb(musb->int_usb, musb->mregs + SUNXI_MUSB_INTRUSB);  in sunxi_musb_interrupt()
178 	if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) {  in sunxi_musb_interrupt()
180 		musb_ep_select(musb->mregs, 0);  in sunxi_musb_interrupt()
181 		musb_writeb(musb->mregs, MUSB_FADDR, 0);  in sunxi_musb_interrupt()
184 	musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX);  in sunxi_musb_interrupt()
185 	if (musb->int_tx)  in sunxi_musb_interrupt()
186 		writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX);  in sunxi_musb_interrupt()
188 	musb->int_rx = readw(musb->mregs + SUNXI_MUSB_INTRRX);  in sunxi_musb_interrupt()
189 	if (musb->int_rx)  in sunxi_musb_interrupt()
190 		writew(musb->int_rx, musb->mregs + SUNXI_MUSB_INTRRX);  in sunxi_musb_interrupt()
194 	spin_unlock_irqrestore(&musb->lock, flags);  in sunxi_musb_interrupt()
205 		set_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);  in sunxi_musb_host_notifier()
207 		clear_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);  in sunxi_musb_host_notifier()
209 	set_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags);  in sunxi_musb_host_notifier()
210 	schedule_work(&glue->work);  in sunxi_musb_host_notifier()
217 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_init()
221 	musb->phy = glue->phy;  in sunxi_musb_init()
222 	musb->xceiv = glue->xceiv;  in sunxi_musb_init()
224 	if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) {  in sunxi_musb_init()
225 		ret = sunxi_sram_claim(musb->controller->parent);  in sunxi_musb_init()
230 	ret = clk_prepare_enable(glue->clk);  in sunxi_musb_init()
234 	if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {  in sunxi_musb_init()
235 		ret = reset_control_deassert(glue->rst);  in sunxi_musb_init()
240 	writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0);  in sunxi_musb_init()
243 	ret = devm_extcon_register_notifier(glue->dev, glue->extcon,  in sunxi_musb_init()
244 					EXTCON_USB_HOST, &glue->host_nb);  in sunxi_musb_init()
248 	ret = phy_init(glue->phy);  in sunxi_musb_init()
252 	musb->isr = sunxi_musb_interrupt;  in sunxi_musb_init()
254 	/* Stop the musb-core from doing runtime pm (not supported on sunxi) */  in sunxi_musb_init()
255 	pm_runtime_get(musb->controller);  in sunxi_musb_init()
260 	if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))  in sunxi_musb_init()
261 		reset_control_assert(glue->rst);  in sunxi_musb_init()
263 	clk_disable_unprepare(glue->clk);  in sunxi_musb_init()
265 	if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))  in sunxi_musb_init()
266 		sunxi_sram_release(musb->controller->parent);  in sunxi_musb_init()
272 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_exit()
274 	pm_runtime_put(musb->controller);  in sunxi_musb_exit()
276 	cancel_work_sync(&glue->work);  in sunxi_musb_exit()
277 	if (test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags))  in sunxi_musb_exit()
278 		phy_power_off(glue->phy);  in sunxi_musb_exit()
280 	phy_exit(glue->phy);  in sunxi_musb_exit()
282 	if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))  in sunxi_musb_exit()
283 		reset_control_assert(glue->rst);  in sunxi_musb_exit()
285 	clk_disable_unprepare(glue->clk);  in sunxi_musb_exit()
286 	if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))  in sunxi_musb_exit()
287 		sunxi_sram_release(musb->controller->parent);  in sunxi_musb_exit()
289 	devm_usb_put_phy(glue->dev, glue->xceiv);  in sunxi_musb_exit()
296 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_enable()
298 	glue->musb = musb;  in sunxi_musb_enable()
301 	if (test_and_set_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))  in sunxi_musb_enable()
304 	schedule_work(&glue->work);  in sunxi_musb_enable()
309 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_disable()
311 	clear_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags);  in sunxi_musb_disable()
326 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_set_mode()
340 		dev_err(musb->controller->parent,  in sunxi_musb_set_mode()
342 		return -EINVAL;  in sunxi_musb_set_mode()
345 	if (glue->phy_mode == new_mode)  in sunxi_musb_set_mode()
348 	if (musb->port_mode != MUSB_OTG) {  in sunxi_musb_set_mode()
349 		dev_err(musb->controller->parent,  in sunxi_musb_set_mode()
351 		return -EINVAL;  in sunxi_musb_set_mode()
354 	if (musb->port1_status & USB_PORT_STAT_ENABLE)  in sunxi_musb_set_mode()
361 	glue->phy_mode = new_mode;  in sunxi_musb_set_mode()
362 	set_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags);  in sunxi_musb_set_mode()
363 	schedule_work(&glue->work);  in sunxi_musb_set_mode()
370 	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);  in sunxi_musb_recover()
373 	 * Schedule a phy_set_mode with the current glue->phy_mode value,  in sunxi_musb_recover()
376 	set_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags);  in sunxi_musb_recover()
377 	schedule_work(&glue->work);  in sunxi_musb_recover()
384  * 0x00 - 0x17	fifo regs, 1 long per fifo
385  * 0x40 - 0x57	generic control regs (power - frame)
386  * 0x80 - 0x8f	ep control regs (addressed through hw_ep->regs, indexed)
387  * 0x90 - 0x97	fifo control regs (indexed)
388  * 0x98 - 0x9f	multipoint / busctl regs (indexed)
414 	if (addr == sunxi_musb->mregs) {  in sunxi_musb_readb()
415 		/* generic control or fifo control reg access */  in sunxi_musb_readb()
436 			glue = dev_get_drvdata(sunxi_musb->controller->parent);  in sunxi_musb_readb()
439 				     &glue->flags))  in sunxi_musb_readb()
453 			dev_err(sunxi_musb->controller->parent,  in sunxi_musb_readb()
457 	} else if (addr == (sunxi_musb->mregs + 0x80)) {  in sunxi_musb_readb()
458 		/* ep control reg access */  in sunxi_musb_readb()
465 	dev_err(sunxi_musb->controller->parent,  in sunxi_musb_readb()
467 		(int)(addr - sunxi_musb->mregs));  in sunxi_musb_readb()
473 	if (addr == sunxi_musb->mregs) {  in sunxi_musb_writeb()
474 		/* generic control or fifo control reg access */  in sunxi_musb_writeb()
488 				dev_warn(sunxi_musb->controller->parent,  in sunxi_musb_writeb()
489 					"sunxi-musb does not have testmode\n");  in sunxi_musb_writeb()
507 			dev_err(sunxi_musb->controller->parent,  in sunxi_musb_writeb()
511 	} else if (addr == (sunxi_musb->mregs + 0x80)) {  in sunxi_musb_writeb()
512 		/* ep control reg access */  in sunxi_musb_writeb()
518 	dev_err(sunxi_musb->controller->parent,  in sunxi_musb_writeb()
520 		(int)(addr - sunxi_musb->mregs));  in sunxi_musb_writeb()
525 	if (addr == sunxi_musb->mregs) {  in sunxi_musb_readw()
526 		/* generic control or fifo control reg access */  in sunxi_musb_readw()
545 			dev_err(sunxi_musb->controller->parent,  in sunxi_musb_readw()
549 	} else if (addr == (sunxi_musb->mregs + 0x80)) {  in sunxi_musb_readw()
550 		/* ep control reg access */  in sunxi_musb_readw()
554 	dev_err(sunxi_musb->controller->parent,  in sunxi_musb_readw()
556 		(int)(addr - sunxi_musb->mregs));  in sunxi_musb_readw()
562 	if (addr == sunxi_musb->mregs) {  in sunxi_musb_writew()
563 		/* generic control or fifo control reg access */  in sunxi_musb_writew()
580 			dev_err(sunxi_musb->controller->parent,  in sunxi_musb_writew()
584 	} else if (addr == (sunxi_musb->mregs + 0x80)) {  in sunxi_musb_writew()
585 		/* ep control reg access */  in sunxi_musb_writew()
589 	dev_err(sunxi_musb->controller->parent,  in sunxi_musb_writew()
591 		(int)(addr - sunxi_musb->mregs));  in sunxi_musb_writew()
671 	struct device_node		*np = pdev->dev.of_node;  in sunxi_musb_probe()
675 		dev_err(&pdev->dev, "Error no device tree node found\n");  in sunxi_musb_probe()
676 		return -EINVAL;  in sunxi_musb_probe()
679 	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);  in sunxi_musb_probe()
681 		return -ENOMEM;  in sunxi_musb_probe()
684 	switch (usb_get_dr_mode(&pdev->dev)) {  in sunxi_musb_probe()
688 		glue->phy_mode = PHY_MODE_USB_HOST;  in sunxi_musb_probe()
694 		glue->phy_mode = PHY_MODE_USB_DEVICE;  in sunxi_musb_probe()
700 		glue->phy_mode = PHY_MODE_USB_OTG;  in sunxi_musb_probe()
704 		dev_err(&pdev->dev, "Invalid or missing 'dr_mode' property\n");  in sunxi_musb_probe()
705 		return -EINVAL;  in sunxi_musb_probe()
708 	if (!of_device_is_compatible(np, "allwinner,sun8i-h3-musb"))  in sunxi_musb_probe()
713 	glue->dev = &pdev->dev;  in sunxi_musb_probe()
714 	INIT_WORK(&glue->work, sunxi_musb_work);  in sunxi_musb_probe()
715 	glue->host_nb.notifier_call = sunxi_musb_host_notifier;  in sunxi_musb_probe()
717 	if (of_device_is_compatible(np, "allwinner,sun4i-a10-musb"))  in sunxi_musb_probe()
718 		set_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags);  in sunxi_musb_probe()
720 	if (of_device_is_compatible(np, "allwinner,sun6i-a31-musb"))  in sunxi_musb_probe()
721 		set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);  in sunxi_musb_probe()
723 	if (of_device_is_compatible(np, "allwinner,sun8i-a33-musb") ||  in sunxi_musb_probe()
724 	    of_device_is_compatible(np, "allwinner,sun8i-h3-musb")) {  in sunxi_musb_probe()
725 		set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);  in sunxi_musb_probe()
726 		set_bit(SUNXI_MUSB_FL_NO_CONFIGDATA, &glue->flags);  in sunxi_musb_probe()
729 	glue->clk = devm_clk_get(&pdev->dev, NULL);  in sunxi_musb_probe()
730 	if (IS_ERR(glue->clk)) {  in sunxi_musb_probe()
731 		dev_err(&pdev->dev, "Error getting clock: %ld\n",  in sunxi_musb_probe()
732 			PTR_ERR(glue->clk));  in sunxi_musb_probe()
733 		return PTR_ERR(glue->clk);  in sunxi_musb_probe()
736 	if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {  in sunxi_musb_probe()
737 		glue->rst = devm_reset_control_get(&pdev->dev, NULL);  in sunxi_musb_probe()
738 		if (IS_ERR(glue->rst)) {  in sunxi_musb_probe()
739 			if (PTR_ERR(glue->rst) == -EPROBE_DEFER)  in sunxi_musb_probe()
740 				return -EPROBE_DEFER;  in sunxi_musb_probe()
741 			dev_err(&pdev->dev, "Error getting reset %ld\n",  in sunxi_musb_probe()
742 				PTR_ERR(glue->rst));  in sunxi_musb_probe()
743 			return PTR_ERR(glue->rst);  in sunxi_musb_probe()
747 	glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0);  in sunxi_musb_probe()
748 	if (IS_ERR(glue->extcon)) {  in sunxi_musb_probe()
749 		if (PTR_ERR(glue->extcon) == -EPROBE_DEFER)  in sunxi_musb_probe()
750 			return -EPROBE_DEFER;  in sunxi_musb_probe()
751 		dev_err(&pdev->dev, "Invalid or missing extcon\n");  in sunxi_musb_probe()
752 		return PTR_ERR(glue->extcon);  in sunxi_musb_probe()
755 	glue->phy = devm_phy_get(&pdev->dev, "usb");  in sunxi_musb_probe()
756 	if (IS_ERR(glue->phy)) {  in sunxi_musb_probe()
757 		if (PTR_ERR(glue->phy) == -EPROBE_DEFER)  in sunxi_musb_probe()
758 			return -EPROBE_DEFER;  in sunxi_musb_probe()
759 		dev_err(&pdev->dev, "Error getting phy %ld\n",  in sunxi_musb_probe()
760 			PTR_ERR(glue->phy));  in sunxi_musb_probe()
761 		return PTR_ERR(glue->phy);  in sunxi_musb_probe()
764 	glue->usb_phy = usb_phy_generic_register();  in sunxi_musb_probe()
765 	if (IS_ERR(glue->usb_phy)) {  in sunxi_musb_probe()
766 		dev_err(&pdev->dev, "Error registering usb-phy %ld\n",  in sunxi_musb_probe()
767 			PTR_ERR(glue->usb_phy));  in sunxi_musb_probe()
768 		return PTR_ERR(glue->usb_phy);  in sunxi_musb_probe()
771 	glue->xceiv = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);  in sunxi_musb_probe()
772 	if (IS_ERR(glue->xceiv)) {  in sunxi_musb_probe()
773 		ret = PTR_ERR(glue->xceiv);  in sunxi_musb_probe()
774 		dev_err(&pdev->dev, "Error getting usb-phy %d\n", ret);  in sunxi_musb_probe()
781 	pinfo.name	 = "musb-hdrc";  in sunxi_musb_probe()
783 	pinfo.parent	= &pdev->dev;  in sunxi_musb_probe()
784 	pinfo.fwnode	= of_fwnode_handle(pdev->dev.of_node);  in sunxi_musb_probe()
786 	pinfo.res	= pdev->resource;  in sunxi_musb_probe()
787 	pinfo.num_res	= pdev->num_resources;  in sunxi_musb_probe()
791 	glue->musb_pdev = platform_device_register_full(&pinfo);  in sunxi_musb_probe()
792 	if (IS_ERR(glue->musb_pdev)) {  in sunxi_musb_probe()
793 		ret = PTR_ERR(glue->musb_pdev);  in sunxi_musb_probe()
794 		dev_err(&pdev->dev, "Error registering musb dev: %d\n", ret);  in sunxi_musb_probe()
801 	usb_phy_generic_unregister(glue->usb_phy);  in sunxi_musb_probe()
808 	struct platform_device *usb_phy = glue->usb_phy;  in sunxi_musb_remove()
810 	platform_device_unregister(glue->musb_pdev);  in sunxi_musb_remove()
817 	{ .compatible = "allwinner,sun4i-a10-musb", },
818 	{ .compatible = "allwinner,sun6i-a31-musb", },
819 	{ .compatible = "allwinner,sun8i-a33-musb", },
820 	{ .compatible = "allwinner,sun8i-h3-musb", },
829 		.name = "musb-sunxi",