mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-02 20:19:48 +02:00
9da7868465
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
116 lines
3.3 KiB
Diff
116 lines
3.3 KiB
Diff
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);
|