brcm47xx: prepare brcm47xx patches for sending to mainline.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22296 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 95 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-2.6.34/021-USB-Add-USB-2.0-to-ssb-ohci-driver.patch b/target/linux/brcm47xx/patches-2.6.34/021-USB-Add-USB-2.0-to-ssb-ohci-driver.patch
new file mode 100644
index 0000000000..91eadaade4
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.34/021-USB-Add-USB-2.0-to-ssb-ohci-driver.patch
@@ -0,0 +1,95 @@
+From cb33ffbdd8491c58b35958ec74c39b3a5c7fabe8 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sun, 18 Jul 2010 21:25:03 +0200
+Subject: [PATCH 1/2] USB: Add USB 2.0 to ssb ohci driver
+
+This adds USB 2.0 support to ssb ohci driver.
+This work was done based on Braodcom source code in the OpenWRT project.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/usb/host/ohci-ssb.c |   55 ++++++++++++++++++++++++++++++++++++++++--
+ 1 files changed, 52 insertions(+), 3 deletions(-)
+
+--- a/drivers/usb/host/ohci-ssb.c
++++ b/drivers/usb/host/ohci-ssb.c
+@@ -92,9 +92,12 @@ static const struct hc_driver ssb_ohci_h
+ static void ssb_ohci_detach(struct ssb_device *dev)
+ {
+ 	struct usb_hcd *hcd = ssb_get_drvdata(dev);
++	if (hcd->driver->shutdown)
++		hcd->driver->shutdown(hcd);
+ 
+ 	usb_remove_hcd(hcd);
+ 	iounmap(hcd->regs);
++	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ 	usb_put_hcd(hcd);
+ 	ssb_device_disable(dev, 0);
+ }
+@@ -106,10 +109,55 @@ static int ssb_ohci_attach(struct ssb_de
+ 	int err = -ENOMEM;
+ 	u32 tmp, flags = 0;
+ 
+-	if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV)
+-		flags |= SSB_OHCI_TMSLOW_HOSTMODE;
++	if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
++	    dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
++		return -EOPNOTSUPP;
+ 
+-	ssb_device_enable(dev, flags);
++	if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) {
++		/* Put the device into host-mode. */
++		flags |= SSB_OHCI_TMSLOW_HOSTMODE;
++		ssb_device_enable(dev, flags);
++	} else if (dev->id.coreid == SSB_DEV_USB20_HOST) {
++		/*
++		 * USB 2.0 special considerations:
++		 *
++		 * 1. Since the core supports both ehci and EHCI functions, it must
++		 *    only be reset once.
++		 *
++		 * 2. In addition to the standard SSB reset sequence, the Host Control
++		 *    Register must be programmed to bring the USB core and various
++		 *    phy components out of reset.
++		 */
++		ssb_device_enable(dev, 0);
++		ssb_write32(dev, 0x200, 0x7ff);
++
++		/* Change Flush control reg */
++		tmp = ssb_read32(dev, 0x400);
++		tmp &= ~8;
++		ssb_write32(dev, 0x400, tmp);
++		tmp = ssb_read32(dev, 0x400);
++
++		/* Change Shim control reg */
++		tmp = ssb_read32(dev, 0x304);
++		tmp &= ~0x100;
++		ssb_write32(dev, 0x304, tmp);
++		tmp = ssb_read32(dev, 0x304);
++
++		udelay(1);
++
++		/* Work around for 5354 failures */
++		if ((dev->id.revision == 2) && (dev->bus->chip_id == 0x5354)) {
++			/* Change syn01 reg */
++			tmp = 0x00fe00fe;
++			ssb_write32(dev, 0x894, tmp);
++
++			/* Change syn03 reg */
++			tmp = ssb_read32(dev, 0x89c);
++			tmp |= 0x1;
++			ssb_write32(dev, 0x89c, tmp);
++		}
++	} else
++		ssb_device_enable(dev, 0);
+ 
+ 	hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev,
+ 			dev_name(dev->dev));
+@@ -200,6 +248,7 @@ static int ssb_ohci_resume(struct ssb_de
+ static const struct ssb_device_id ssb_ohci_table[] = {
+ 	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV),
+ 	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV),
++	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
+ 	SSB_DEVTABLE_END
+ };
+ MODULE_DEVICE_TABLE(ssb, ssb_ohci_table);