brcm47xx: update usb driver for brcm47xx.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30480 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 377 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.2/184-USB-Add-driver-for-the-bcma-bus.patch b/target/linux/brcm47xx/patches-3.2/184-USB-Add-driver-for-the-bcma-bus.patch
new file mode 100644
index 0000000000..259af4f1a8
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.2/184-USB-Add-driver-for-the-bcma-bus.patch
@@ -0,0 +1,377 @@
+From 70fc4b2a6200ef7a1b99a6aa28234b919f23b43c Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 26 Nov 2011 21:33:41 +0100
+Subject: [PATCH 184/186] USB: Add driver for the bcma bus
+
+This adds a USB driver using the generic platform device driver for the
+USB controller found on the Broadcom bcma bus. The bcma bus just
+exposes one device which serves the OHCI and the EHCI controller at the
+same time. This driver probes for this USB controller and creates and
+registers two new platform devices which will be probed by the new
+generic platform device driver. This makes it possible to use the EHCI
+and the OCHI controller on the bcma bus at the same time.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/usb/host/Kconfig    |   12 ++
+ drivers/usb/host/Makefile   |    1 +
+ drivers/usb/host/bcma-hcd.c |  328 +++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 341 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/usb/host/bcma-hcd.c
+
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -618,3 +618,15 @@ config USB_PXA168_EHCI
+ 	help
+ 	  Enable support for Marvell PXA168 SoC's on-chip EHCI
+ 	  host controller
++
++config USB_HCD_BCMA
++	tristate "BCMA usb host driver"
++	depends on BCMA && EXPERIMENTAL
++	select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
++	select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
++	help
++	  Enbale support for the EHCI and OCHI host controller on an bcma bus.
++	  It converts the bcma driver into two platform device drivers
++	  for ehci and ohci.
++
++	  If unsure, say N.
+--- a/drivers/usb/host/Makefile
++++ b/drivers/usb/host/Makefile
+@@ -37,3 +37,4 @@ obj-$(CONFIG_USB_IMX21_HCD)	+= imx21-hcd
+ obj-$(CONFIG_USB_FSL_MPH_DR_OF)	+= fsl-mph-dr-of.o
+ obj-$(CONFIG_USB_OCTEON2_COMMON) += octeon2-common.o
+ obj-$(CONFIG_MIPS_ALCHEMY)	+= alchemy-common.o
++obj-$(CONFIG_USB_HCD_BCMA)	+= bcma-hcd.o
+--- /dev/null
++++ b/drivers/usb/host/bcma-hcd.c
+@@ -0,0 +1,328 @@
++/*
++ * Broadcom specific Advanced Microcontroller Bus
++ * Broadcom USB-core driver (BCMA bus glue)
++ *
++ * Copyright 2011 Hauke Mehrtens <hauke@hauke-m.de>
++ *
++ * Based on ssb-ohci driver
++ * Copyright 2007 Michael Buesch <m@bues.ch>
++ *
++ * Derived from the OHCI-PCI driver
++ * Copyright 1999 Roman Weissgaerber
++ * Copyright 2000-2002 David Brownell
++ * Copyright 1999 Linus Torvalds
++ * Copyright 1999 Gregory P. Smith
++ *
++ * Derived from the USBcore related parts of Broadcom-SB
++ * Copyright 2005-2011 Broadcom Corporation
++ *
++ * Licensed under the GNU/GPL. See COPYING for details.
++ */
++#include <linux/bcma/bcma.h>
++#include <linux/delay.h>
++#include <linux/platform_device.h>
++#include <linux/module.h>
++#include <linux/usb/hci_driver.h>
++
++MODULE_AUTHOR("Hauke Mehrtens");
++MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
++MODULE_LICENSE("GPL");
++
++struct bcma_hcd_device {
++	struct platform_device *ehci_dev;
++	struct platform_device *ohci_dev;
++};
++
++/* Wait for bitmask in a register to get set or cleared.
++ * timeout is in units of ten-microseconds.
++ */
++static int bcma_wait_bits(struct bcma_device *dev, u16 reg, u32 bitmask,
++			  int timeout)
++{
++	int i;
++	u32 val;
++
++	for (i = 0; i < timeout; i++) {
++		val = bcma_read32(dev, reg);
++		if ((val & bitmask) == bitmask)
++			return 0;
++		udelay(10);
++	}
++
++	return -ETIMEDOUT;
++}
++
++static void __devinit bcma_hcd_4716wa(struct bcma_device *dev)
++{
++#ifdef CONFIG_BCMA_DRIVER_MIPS
++	/* Work around for 4716 failures. */
++	if (dev->bus->chipinfo.id == 0x4716) {
++		u32 tmp;
++
++		tmp = bcma_cpu_clock(&dev->bus->drv_mips);
++		if (tmp >= 480000000)
++			tmp = 0x1846b; /* set CDR to 0x11(fast) */
++		else if (tmp == 453000000)
++			tmp = 0x1046b; /* set CDR to 0x10(slow) */
++		else
++			tmp = 0;
++
++		/* Change Shim mdio control reg to fix host not acking at
++		 * high frequencies
++		 */
++		if (tmp) {
++			bcma_write32(dev, 0x524, 0x1); /* write sel to enable */
++			udelay(500);
++
++			bcma_write32(dev, 0x524, tmp);
++			udelay(500);
++			bcma_write32(dev, 0x524, 0x4ab);
++			udelay(500);
++			bcma_read32(dev, 0x528);
++			bcma_write32(dev, 0x528, 0x80000000);
++		}
++	}
++#endif /* CONFIG_BCMA_DRIVER_MIPS */
++}
++
++/* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
++static void __devinit bcma_hcd_init_chip(struct bcma_device *dev)
++{
++	u32 tmp;
++
++	/*
++	 * USB 2.0 special considerations:
++	 *
++	 * 1. Since the core supports both OHCI and EHCI functions, it must
++	 *    only be reset once.
++	 *
++	 * 2. In addition to the standard SI reset sequence, the Host Control
++	 *    Register must be programmed to bring the USB core and various
++	 *    phy components out of reset.
++	 */
++	if (!bcma_core_is_enabled(dev)) {
++		bcma_core_enable(dev, 0);
++		mdelay(10);
++		if (dev->id.rev >= 5) {
++			/* Enable Misc PLL */
++			tmp = bcma_read32(dev, 0x1e0);
++			tmp |= 0x100;
++			bcma_write32(dev, 0x1e0, tmp);
++			if (bcma_wait_bits(dev, 0x1e0, 1 << 24, 100))
++				printk(KERN_EMERG "Failed to enable misc PPL!\n");
++
++			/* Take out of resets */
++			bcma_write32(dev, 0x200, 0x4ff);
++			udelay(25);
++			bcma_write32(dev, 0x200, 0x6ff);
++			udelay(25);
++
++			/* Make sure digital and AFE are locked in USB PHY */
++			bcma_write32(dev, 0x524, 0x6b);
++			udelay(50);
++			tmp = bcma_read32(dev, 0x524);
++			udelay(50);
++			bcma_write32(dev, 0x524, 0xab);
++			udelay(50);
++			tmp = bcma_read32(dev, 0x524);
++			udelay(50);
++			bcma_write32(dev, 0x524, 0x2b);
++			udelay(50);
++			tmp = bcma_read32(dev, 0x524);
++			udelay(50);
++			bcma_write32(dev, 0x524, 0x10ab);
++			udelay(50);
++			tmp = bcma_read32(dev, 0x524);
++
++			if (bcma_wait_bits(dev, 0x528, 0xc000, 10000)) {
++				tmp = bcma_read32(dev, 0x528);
++				printk(KERN_EMERG
++				       "USB20H mdio_rddata 0x%08x\n", tmp);
++			}
++			bcma_write32(dev, 0x528, 0x80000000);
++			tmp = bcma_read32(dev, 0x314);
++			udelay(265);
++			bcma_write32(dev, 0x200, 0x7ff);
++			udelay(10);
++
++			/* Take USB and HSIC out of non-driving modes */
++			bcma_write32(dev, 0x510, 0);
++		} else {
++			bcma_write32(dev, 0x200, 0x7ff);
++
++			udelay(1);
++		}
++
++		bcma_hcd_4716wa(dev);
++	}
++}
++
++static const struct usb_hci_pdata p_data = {
++	.flags = USB_HCI_PDATA_PORT_POWER_SET,
++	.power_set_is_on = 1,
++};
++
++static struct platform_device * __devinit
++bcma_hcd_create_pdev(struct bcma_device *dev, char *name, u32 addr)
++{
++	struct platform_device *hci_dev;
++	struct resource hci_res[2];
++	int ret = -ENOMEM;
++
++	memset(hci_res, 0, sizeof(hci_res));
++
++	hci_res[0].start = addr;
++	hci_res[0].end = hci_res[0].start + 0x1000 - 1;
++	hci_res[0].flags = IORESOURCE_MEM;
++
++	hci_res[1].start = dev->irq;
++	hci_res[1].flags = IORESOURCE_IRQ;
++
++	hci_dev = platform_device_alloc(name, 0);
++	if (!hci_dev)
++		return NULL;
++
++	hci_dev->dev.parent = &dev->dev;
++	hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
++
++	ret = platform_device_add_resources(hci_dev, hci_res,
++					    ARRAY_SIZE(hci_res));
++	if (ret)
++		goto err_alloc;
++	ret = platform_device_add_data(hci_dev, &p_data, sizeof(p_data));
++	if (ret)
++		goto err_alloc;
++	ret = platform_device_add(hci_dev);
++	if (ret)
++		goto err_alloc;
++
++	return hci_dev;
++
++err_alloc:
++	platform_device_put(hci_dev);
++	return ERR_PTR(ret);
++}
++
++static int __devinit bcma_hcd_probe(struct bcma_device *dev)
++{
++	int err;
++	u16 chipid_top;
++	u32 ohci_addr;
++	struct bcma_hcd_device *usb_dev;
++	struct bcma_chipinfo *chipinfo;
++
++	chipinfo = &dev->bus->chipinfo;
++	/* USBcores are only connected on embedded devices. */
++	chipid_top = (chipinfo->id & 0xFF00);
++	if (chipid_top != 0x4700 && chipid_top != 0x5300)
++		return -ENODEV;
++
++	/* TODO: Probably need checks here; is the core connected? */
++
++	if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
++	    dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
++		return -EOPNOTSUPP;
++
++	usb_dev = kzalloc(sizeof(struct bcma_hcd_device), GFP_KERNEL);
++	if (!usb_dev)
++		return -ENOMEM;
++
++	bcma_hcd_init_chip(dev);
++
++	/* In AI chips EHCI is addrspace 0, OHCI is 1 */
++	ohci_addr = dev->addr1;
++	if ((chipinfo->id == 0x5357 || chipinfo->id == 0x4749)
++	    && chipinfo->rev == 0)
++		ohci_addr = 0x18009000;
++
++	usb_dev->ohci_dev = bcma_hcd_create_pdev(dev, "ohci-platform",
++						 ohci_addr);
++	if (IS_ERR(usb_dev->ohci_dev)) {
++		err = PTR_ERR(usb_dev->ohci_dev);
++		goto err_free_usb_dev;
++	}
++
++	usb_dev->ehci_dev = bcma_hcd_create_pdev(dev, "ehci-platform",
++						 dev->addr);
++	if (IS_ERR(usb_dev->ehci_dev)) {
++		err = PTR_ERR(usb_dev->ehci_dev);
++		goto err_unregister_ohci_dev;
++	}
++
++	bcma_set_drvdata(dev, usb_dev);
++	return 0;
++
++err_unregister_ohci_dev:
++	platform_device_unregister(usb_dev->ohci_dev);
++err_free_usb_dev:
++	kfree(usb_dev);
++	return err;
++}
++
++static void __devexit bcma_hcd_remove(struct bcma_device *dev)
++{
++	struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev);
++	struct platform_device *ohci_dev = usb_dev->ohci_dev;
++	struct platform_device *ehci_dev = usb_dev->ehci_dev;
++
++	if (ohci_dev)
++		platform_device_unregister(ohci_dev);
++	if (ehci_dev)
++		platform_device_unregister(ehci_dev);
++
++	bcma_core_disable(dev, 0);
++}
++
++static void bcma_hcd_shutdown(struct bcma_device *dev)
++{
++	bcma_core_disable(dev, 0);
++}
++
++#ifdef CONFIG_PM
++
++static int bcma_hcd_suspend(struct bcma_device *dev, pm_message_t state)
++{
++	bcma_core_disable(dev, 0);
++
++	return 0;
++}
++
++static int bcma_hcd_resume(struct bcma_device *dev)
++{
++	bcma_core_enable(dev, 0);
++
++	return 0;
++}
++
++#else /* !CONFIG_PM */
++#define bcma_hcd_suspend	NULL
++#define bcma_hcd_resume	NULL
++#endif /* CONFIG_PM */
++
++static const struct bcma_device_id bcma_hcd_table[] __devinitconst = {
++	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
++	BCMA_CORETABLE_END
++};
++MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);
++
++static struct bcma_driver bcma_hcd_driver = {
++	.name		= KBUILD_MODNAME,
++	.id_table	= bcma_hcd_table,
++	.probe		= bcma_hcd_probe,
++	.remove		= __devexit_p(bcma_hcd_remove),
++	.shutdown	= bcma_hcd_shutdown,
++	.suspend	= bcma_hcd_suspend,
++	.resume		= bcma_hcd_resume,
++};
++
++static int __init bcma_hcd_init(void)
++{
++	return bcma_driver_register(&bcma_hcd_driver);
++}
++module_init(bcma_hcd_init);
++
++static void __exit bcma_hcd_exit(void)
++{
++	bcma_driver_unregister(&bcma_hcd_driver);
++}
++module_exit(bcma_hcd_exit);