brcm47xx: add new usb driver for bcma bus and replace ssb usb driver.

This new usb driver uses an extra device so the ehci and the ohci driver are not depending on ech other any more.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29575 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 115 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.0/0029-bcma-add-function-to-check-every-10-s-if-a-reg-is-se.patch b/target/linux/brcm47xx/patches-3.0/0029-bcma-add-function-to-check-every-10-s-if-a-reg-is-se.patch
new file mode 100644
index 000000000..2c0462fea
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.0/0029-bcma-add-function-to-check-every-10-s-if-a-reg-is-se.patch
@@ -0,0 +1,115 @@
+From 6e8ae6e2cee0e7e5939dc7042584c808366e61e0 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sun, 27 Nov 2011 14:01:01 +0100
+Subject: [PATCH 16/21] =?UTF-8?q?bcma:=20add=20function=20to=20check=20every?=
+ =?UTF-8?q?=2010=20=C2=B5s=20if=20a=20reg=20is=20set?=
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This function checks if a reg get set or cleared every 10 microseconds.
+It is used in bcma_core_set_clockmode() and bcma_core_pll_ctl() to
+reduce code duplication. In addition it is needed in the USB host
+driver.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/bcma/core.c       |   48 ++++++++++++++++++++++++++++----------------
+ include/linux/bcma/bcma.h |    2 +
+ 2 files changed, 32 insertions(+), 18 deletions(-)
+
+--- a/drivers/bcma/core.c
++++ b/drivers/bcma/core.c
+@@ -51,11 +51,36 @@ int bcma_core_enable(struct bcma_device
+ }
+ EXPORT_SYMBOL_GPL(bcma_core_enable);
+ 
++/* Wait for bitmask in a register to get set or cleared.
++ * timeout is in units of ten-microseconds.
++ */
++int bcma_wait_bits(struct bcma_device *dev, u16 reg, u32 bitmask, int timeout,
++		   int set)
++{
++	int i;
++	u32 val;
++
++	for (i = 0; i < timeout; i++) {
++		val = bcma_read32(dev, reg);
++		if (set) {
++			if ((val & bitmask) == bitmask)
++				return 0;
++		} else {
++			if (!(val & bitmask))
++				return 0;
++		}
++		udelay(10);
++	}
++	pr_err("Timeout waiting for bitmask %08X on register %04X to %s.\n",
++	       bitmask, reg, (set ? "set" : "clear"));
++
++	return -ETIMEDOUT;
++}
++EXPORT_SYMBOL_GPL(bcma_wait_bits);
++
+ void bcma_core_set_clockmode(struct bcma_device *core,
+ 			     enum bcma_clkmode clkmode)
+ {
+-	u16 i;
+-
+ 	WARN_ON(core->id.id != BCMA_CORE_CHIPCOMMON &&
+ 		core->id.id != BCMA_CORE_PCIE &&
+ 		core->id.id != BCMA_CORE_80211);
+@@ -64,15 +89,8 @@ void bcma_core_set_clockmode(struct bcma
+ 	case BCMA_CLKMODE_FAST:
+ 		bcma_set32(core, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);
+ 		udelay(64);
+-		for (i = 0; i < 1500; i++) {
+-			if (bcma_read32(core, BCMA_CLKCTLST) &
+-			    BCMA_CLKCTLST_HAVEHT) {
+-				i = 0;
+-				break;
+-			}
+-			udelay(10);
+-		}
+-		if (i)
++		if (bcma_wait_bits(core, BCMA_CLKCTLST, BCMA_CLKCTLST_HAVEHT,
++				   1500, 1))
+ 			pr_err("HT force timeout\n");
+ 		break;
+ 	case BCMA_CLKMODE_DYNAMIC:
+@@ -84,22 +102,12 @@ EXPORT_SYMBOL_GPL(bcma_core_set_clockmod
+ 
+ void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on)
+ {
+-	u16 i;
+-
+ 	WARN_ON(req & ~BCMA_CLKCTLST_EXTRESREQ);
+ 	WARN_ON(status & ~BCMA_CLKCTLST_EXTRESST);
+ 
+ 	if (on) {
+ 		bcma_set32(core, BCMA_CLKCTLST, req);
+-		for (i = 0; i < 10000; i++) {
+-			if ((bcma_read32(core, BCMA_CLKCTLST) & status) ==
+-			    status) {
+-				i = 0;
+-				break;
+-			}
+-			udelay(10);
+-		}
+-		if (i)
++		if (bcma_wait_bits(core, BCMA_CLKCTLST, status, 10000, 1))
+ 			pr_err("PLL enable timeout\n");
+ 	} else {
+ 		pr_warn("Disabling PLL not supported yet!\n");
+--- a/include/linux/bcma/bcma.h
++++ b/include/linux/bcma/bcma.h
+@@ -283,6 +283,9 @@ static inline void bcma_maskset16(struct
+ 	bcma_write16(cc, offset, (bcma_read16(cc, offset) & mask) | set);
+ }
+ 
++extern int bcma_wait_bits(struct bcma_device *dev, u16 reg, u32 bitmask,
++			  int timeout, int set);
++
+ extern bool bcma_core_is_enabled(struct bcma_device *core);
+ extern void bcma_core_disable(struct bcma_device *core, u32 flags);
+ extern int bcma_core_enable(struct bcma_device *core, u32 flags);