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-rw-r--r--target/linux/brcm47xx/patches-3.2/184-USB-Add-driver-for-the-bcma-bus.patch377
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);
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