brcm47xx: update usb driver

Add workarround for BCM5357 and BCM4749.

This patch contains the following fixes from George Kashperko:
* separate subroutines for controller initialization workarounds -
   following CodingStyle recommendations;
* __devinit __devexit __devinitconst annotations for CONFIG_HOTPLUG;
* fix leak in ssb_hcd_create_pdev/bcma_hcd_create_pdev - as hci_res being
   kmalloc'ed is never freed anywhere while platform_device_add_resources
   will kmemdup resources right away;
* fix compilation error in ssb_hcd_resume - it will fail as soon as
   CONFIG_PM is selected.



git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29734 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 62 insertions, 52 deletions

diff --git a/target/linux/brcm47xx/patches-3.0/0032-USB-Add-driver-for-the-bcma-bus.patch b/target/linux/brcm47xx/patches-3.0/0032-USB-Add-driver-for-the-bcma-bus.patch
index cecc017d0b..e2a2f1e474 100644
--- a/target/linux/brcm47xx/patches-3.0/0032-USB-Add-driver-for-the-bcma-bus.patch
+++ b/target/linux/brcm47xx/patches-3.0/0032-USB-Add-driver-for-the-bcma-bus.patch
@@ -1,7 +1,7 @@
-From 7151c34627b938486008cfab25bfb4e4f730a021 Mon Sep 17 00:00:00 2001
+From 4ea647c5a257d57eaf230f783e54b2c0232852b8 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 19/21] USB: Add driver for the bcma bus
+Subject: [PATCH 19/26] 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
@@ -15,8 +15,8 @@ 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 |  350 +++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 363 insertions(+), 0 deletions(-)
+ drivers/usb/host/bcma-hcd.c |  309 +++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 322 insertions(+), 0 deletions(-)
  create mode 100644 drivers/usb/host/bcma-hcd.c
 
 --- a/drivers/usb/host/Kconfig
@@ -46,7 +46,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +obj-$(CONFIG_USB_HCD_BCMA)	+= bcma-hcd.o
 --- /dev/null
 +++ b/drivers/usb/host/bcma-hcd.c
-@@ -0,0 +1,299 @@
+@@ -0,0 +1,309 @@
 +/*
 + * Broadcom specific Advanced Microcontroller Bus
 + * Broadcom USB-core driver (BCMA bus glue)
@@ -76,15 +76,46 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
 +MODULE_LICENSE("GPL");
 +
-+#define BCMA_CORE_SIZE		0x1000
-+
 +struct bcma_hcd_device {
 +	struct platform_device *ehci_dev;
 +	struct platform_device *ohci_dev;
 +};
 +
++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 bcma_hcd_init_chip(struct bcma_device *dev)
++static void __devinit bcma_hcd_init_chip(struct bcma_device *dev)
 +{
 +	u32 tmp;
 +
@@ -150,51 +181,22 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +
 +			udelay(1);
 +		}
-+	}
-+#ifdef CONFIG_BCMA_DRIVER_MIPS
-+	/* Work around for 4716 failures. */
-+	if (dev->bus->chipinfo.id == 0x4716) {
-+		u32 clk_freq;
-+
-+		clk_freq = bcma_cpu_clock(&dev->bus->drv_mips);
-+		if (clk_freq >= 480000000)
-+			tmp = 0x1846b; /* set CDR to 0x11(fast) */
-+		else if (clk_freq == 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);
-+			tmp = bcma_read32(dev, 0x528);
-+			bcma_write32(dev, 0x528, 0x80000000);
-+		}
++		bcma_hcd_4716wa(dev);
 +	}
-+#endif /* CONFIG_BCMA_DRIVER_MIPS */
 +}
 +
-+static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev,
-+						    char *name, u32 addr)
++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;
++	struct resource hci_res[2];
 +	int ret = -ENOMEM;
 +
-+	hci_res = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL);
-+	if (!hci_res)
-+		return ERR_PTR(-ENOMEM);
++	memset(hci_res, 0, sizeof(hci_res));
 +
 +	hci_res[0].start = addr;
-+	hci_res[0].end = hci_res[0].start + BCMA_CORE_SIZE - 1;
++	hci_res[0].end = hci_res[0].start + 0x1000 - 1;
 +	hci_res[0].flags = IORESOURCE_MEM;
 +
 +	hci_res[1].start = dev->irq;
@@ -207,14 +209,14 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +	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, 2);
++	ret = platform_device_add_resources(hci_dev, hci_res,
++					    ARRAY_SIZE(hci_res));
 +	if (ret)
 +		goto err_alloc;
 +
 +	ret = platform_device_add(hci_dev);
 +	if (ret) {
 +err_alloc:
-+		kfree(hci_res);
 +		platform_device_put(hci_dev);
 +		return ERR_PTR(ret);
 +	}
@@ -222,14 +224,17 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +	return hci_dev;
 +}
 +
-+static int bcma_hcd_probe(struct bcma_device *dev)
++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 = (dev->bus->chipinfo.id & 0xFF00);
++	chipid_top = (chipinfo->id & 0xFF00);
 +	if (chipid_top != 0x4700 && chipid_top != 0x5300)
 +		return -ENODEV;
 +
@@ -245,8 +250,14 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +
 +	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",
-+						 dev->addr1);
++						 ohci_addr);
 +	if (IS_ERR(usb_dev->ohci_dev)) {
 +		err = PTR_ERR(usb_dev->ohci_dev);
 +		goto err_free_usb_dev;
@@ -257,7 +268,6 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +	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);
@@ -270,7 +280,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +	return err;
 +}
 +
-+static void bcma_hcd_remove(struct bcma_device *dev)
++static void __devexit bcma_hcd_remove(struct bcma_device *dev)
 +{
 +	struct bcma_hcd_device *usb_dev;
 +	struct platform_device *ohci_dev;
@@ -319,7 +329,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +#define bcma_hcd_resume	NULL
 +#endif /* CONFIG_PM */
 +
-+static const struct bcma_device_id bcma_hcd_table[] = {
++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
 +};
@@ -329,7 +339,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +	.name		= KBUILD_MODNAME,
 +	.id_table	= bcma_hcd_table,
 +	.probe		= bcma_hcd_probe,
-+	.remove		= bcma_hcd_remove,
++	.remove		= __devexit_p(bcma_hcd_remove),
 +	.shutdown	= bcma_hcd_shutdown,
 +	.suspend	= bcma_hcd_suspend,
 +	.resume		= bcma_hcd_resume,