1 // SPDX-License-Identifier: GPL-2.0+
3  * Ingenic JZ4740 "glue layer"
9 #include <linux/dma-mapping.h>
14 #include <linux/usb/usb_phy_generic.h>
30 	spin_lock_irqsave(&musb->lock, flags);  in jz4740_musb_interrupt()
32 	musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);  in jz4740_musb_interrupt()
33 	musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);  in jz4740_musb_interrupt()
34 	musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);  in jz4740_musb_interrupt()
41 	musb->int_usb &= MUSB_INTR_SUSPEND | MUSB_INTR_RESUME |  in jz4740_musb_interrupt()
44 	if (musb->int_usb || musb->int_tx || musb->int_rx)  in jz4740_musb_interrupt()
47 	spin_unlock_irqrestore(&musb->lock, flags);  in jz4740_musb_interrupt()
59 	/* Silicon does not implement USB OTG. */
77 	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);  in jz4740_musb_init()
78 	if (IS_ERR(musb->xceiv)) {  in jz4740_musb_init()
80 		return PTR_ERR(musb->xceiv);  in jz4740_musb_init()
86 	musb->dyn_fifo = true;  in jz4740_musb_init()
88 	musb->isr = jz4740_musb_interrupt;  in jz4740_musb_init()
95 	usb_put_phy(musb->xceiv);  in jz4740_musb_exit()
115 	struct jz4740_glue		*glue;  in jz4740_probe()  local
119 	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);  in jz4740_probe()
120 	if (!glue)  in jz4740_probe()
121 		return -ENOMEM;  in jz4740_probe()
123 	musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);  in jz4740_probe()
125 		dev_err(&pdev->dev, "failed to allocate musb device\n");  in jz4740_probe()
126 		return -ENOMEM;  in jz4740_probe()
129 	clk = devm_clk_get(&pdev->dev, "udc");  in jz4740_probe()
131 		dev_err(&pdev->dev, "failed to get clock\n");  in jz4740_probe()
138 		dev_err(&pdev->dev, "failed to enable clock\n");  in jz4740_probe()
142 	musb->dev.parent		= &pdev->dev;  in jz4740_probe()
144 	glue->dev			= &pdev->dev;  in jz4740_probe()
145 	glue->musb			= musb;  in jz4740_probe()
146 	glue->clk			= clk;  in jz4740_probe()
148 	pdata->platform_ops		= &jz4740_musb_ops;  in jz4740_probe()
150 	platform_set_drvdata(pdev, glue);  in jz4740_probe()
152 	ret = platform_device_add_resources(musb, pdev->resource,  in jz4740_probe()
153 					    pdev->num_resources);  in jz4740_probe()
155 		dev_err(&pdev->dev, "failed to add resources\n");  in jz4740_probe()
161 		dev_err(&pdev->dev, "failed to add platform_data\n");  in jz4740_probe()
167 		dev_err(&pdev->dev, "failed to register musb device\n");  in jz4740_probe()
182 	struct jz4740_glue	*glue = platform_get_drvdata(pdev);  in jz4740_remove()  local
184 	platform_device_unregister(glue->musb);  in jz4740_remove()
186 	clk_disable_unprepare(glue->clk);  in jz4740_remove()
195 		.name	= "musb-jz4740",
199 MODULE_DESCRIPTION("JZ4740 MUSB Glue Layer");