1 // SPDX-License-Identifier: GPL-2.0
4  * Broadcom USB-core driver (BCMA bus glue)
6  * Copyright 2011-2015 Hauke Mehrtens <hauke@hauke-m.de>
9  * Based on ssb-ohci driver
12  * Derived from the OHCI-PCI driver
14  * Copyright 2000-2002 David Brownell
18  * Derived from the USBcore related parts of Broadcom-SB
19  * Copyright 2005-2011 Broadcom Corporation
30 #include <linux/usb/ehci_pdriver.h>
31 #include <linux/usb/ohci_pdriver.h>
34 MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
48  * timeout is in units of ten-microseconds.
50 static int bcma_wait_bits(struct bcma_device *dev, u16 reg, u32 bitmask,  in bcma_wait_bits()  argument
57 		val = bcma_read32(dev, reg);  in bcma_wait_bits()
63 	return -ETIMEDOUT;  in bcma_wait_bits()
70 	if (dev->bus->chipinfo.id == 0x4716) {  in bcma_hcd_4716wa()
73 		tmp = bcma_cpu_clock(&dev->bus->drv_mips);  in bcma_hcd_4716wa()
81 		/* Change Shim mdio control reg to fix host not acking at  in bcma_hcd_4716wa()
99 /* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
105 	 * USB 2.0 special considerations:  in bcma_hcd_init_chip_mips()
111 	 *    Register must be programmed to bring the USB core and various  in bcma_hcd_init_chip_mips()
117 		if (dev->id.rev >= 5) {  in bcma_hcd_init_chip_mips()
118 			/* Enable Misc PLL */  in bcma_hcd_init_chip_mips()
123 				printk(KERN_EMERG "Failed to enable misc PPL!\n");  in bcma_hcd_init_chip_mips()
131 			/* Make sure digital and AFE are locked in USB PHY */  in bcma_hcd_init_chip_mips()
159 			/* Take USB and HSIC out of non-driving modes */  in bcma_hcd_init_chip_mips()
172  * bcma_hcd_usb20_old_arm_init - Initialize old USB 2.0 controller on ARM
174  * Old USB 2.0 core is identified as BCMA_CORE_USB20_HOST and was introduced
181 	struct bcma_device *core = usb_dev->core;  in bcma_hcd_usb20_old_arm_init()
182 	struct device *dev = &core->dev;  in bcma_hcd_usb20_old_arm_init()
186 	if (core->id.rev < 5)  in bcma_hcd_usb20_old_arm_init()
189 	pmu_core = bcma_find_core(core->bus, BCMA_CORE_PMU);  in bcma_hcd_usb20_old_arm_init()
192 		return -ENOENT;  in bcma_hcd_usb20_old_arm_init()
195 	/* Take USB core out of reset */  in bcma_hcd_usb20_old_arm_init()
205 	/* Enable Misc PLL */  in bcma_hcd_usb20_old_arm_init()
215 	/* Program USB PHY PLL parameters */  in bcma_hcd_usb20_old_arm_init()
236 	of_platform_default_populate(dev->of_node, NULL, dev);  in bcma_hcd_usb20_old_arm_init()
265  * bcma_hcd_usb20_ns_init - Initialize Northstar USB 2.0 controller
269 	struct bcma_device *core = bcma_hcd->core;  in bcma_hcd_usb20_ns_init()
270 	struct bcma_chipinfo *ci = &core->bus->chipinfo;  in bcma_hcd_usb20_ns_init()
271 	struct device *dev = &core->dev;  in bcma_hcd_usb20_ns_init()
275 	if (ci->id == BCMA_CHIP_ID_BCM4707 ||  in bcma_hcd_usb20_ns_init()
276 	    ci->id == BCMA_CHIP_ID_BCM53018)  in bcma_hcd_usb20_ns_init()
279 	of_platform_default_populate(dev->of_node, NULL, dev);  in bcma_hcd_usb20_ns_init()
288 	if (!usb_dev->gpio_desc)  in bcma_hci_platform_power_gpio()
291 	gpiod_set_value(usb_dev->gpio_desc, val);  in bcma_hci_platform_power_gpio()
312 	hci_res[0].end = hci_res[0].start + 0x1000 - 1;  in bcma_hcd_create_pdev()
315 	hci_res[1].start = dev->irq;  in bcma_hcd_create_pdev()
320 		return ERR_PTR(-ENOMEM);  in bcma_hcd_create_pdev()
322 	hci_dev->dev.parent = &dev->dev;  in bcma_hcd_create_pdev()
323 	hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;  in bcma_hcd_create_pdev()
346 	struct bcma_device *dev = usb_dev->core;  in bcma_hcd_usb20_init()
347 	struct bcma_chipinfo *chipinfo = &dev->bus->chipinfo;  in bcma_hcd_usb20_init()
351 	if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))  in bcma_hcd_usb20_init()
352 		return -EOPNOTSUPP;  in bcma_hcd_usb20_init()
357 	ohci_addr = dev->addr_s[0];  in bcma_hcd_usb20_init()
358 	if ((chipinfo->id == BCMA_CHIP_ID_BCM5357 ||  in bcma_hcd_usb20_init()
359 	     chipinfo->id == BCMA_CHIP_ID_BCM4749)  in bcma_hcd_usb20_init()
360 	    && chipinfo->rev == 0)  in bcma_hcd_usb20_init()
363 	usb_dev->ohci_dev = bcma_hcd_create_pdev(dev, "ohci-platform",  in bcma_hcd_usb20_init()
366 	if (IS_ERR(usb_dev->ohci_dev))  in bcma_hcd_usb20_init()
367 		return PTR_ERR(usb_dev->ohci_dev);  in bcma_hcd_usb20_init()
369 	usb_dev->ehci_dev = bcma_hcd_create_pdev(dev, "ehci-platform",  in bcma_hcd_usb20_init()
370 						 dev->addr, &ehci_pdata,  in bcma_hcd_usb20_init()
372 	if (IS_ERR(usb_dev->ehci_dev)) {  in bcma_hcd_usb20_init()
373 		err = PTR_ERR(usb_dev->ehci_dev);  in bcma_hcd_usb20_init()
380 	platform_device_unregister(usb_dev->ohci_dev);  in bcma_hcd_usb20_init()
386 	struct bcma_device *core = bcma_hcd->core;  in bcma_hcd_usb30_init()
387 	struct device *dev = &core->dev;  in bcma_hcd_usb30_init()
391 	of_platform_default_populate(dev->of_node, NULL, dev);  in bcma_hcd_usb30_init()
403 	usb_dev = devm_kzalloc(&core->dev, sizeof(struct bcma_hcd_device),  in bcma_hcd_probe()
406 		return -ENOMEM;  in bcma_hcd_probe()
407 	usb_dev->core = core;  in bcma_hcd_probe()
409 	usb_dev->gpio_desc = devm_gpiod_get_optional(&core->dev, "vcc",  in bcma_hcd_probe()
411 	if (IS_ERR(usb_dev->gpio_desc))  in bcma_hcd_probe()
412 		return dev_err_probe(&core->dev, PTR_ERR(usb_dev->gpio_desc),  in bcma_hcd_probe()
415 	switch (core->id.id) {  in bcma_hcd_probe()
422 			err = -ENOTSUPP;  in bcma_hcd_probe()
431 		return -ENODEV;  in bcma_hcd_probe()
443 	struct platform_device *ohci_dev = usb_dev->ohci_dev;  in bcma_hcd_remove()
444 	struct platform_device *ehci_dev = usb_dev->ehci_dev;  in bcma_hcd_remove()