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bcma: allow setting FAST clockmode for a core 

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2011-07-17 01:06:04 +02:00 committed by John W. Linville
parent 3de1a7748f
commit 7424dd0d03
2 changed files with 38 additions and 1 deletions
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31
drivers/bcma/core.c
View File

@ -50,3 +50,34 @@ int bcma_core_enable(struct bcma_device *core, u32 flags)
return 0;
}
EXPORT_SYMBOL_GPL(bcma_core_enable);
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);
switch (clkmode) {
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)
pr_err("HT force timeout\n");
break;
case BCMA_CLKMODE_DYNAMIC:
pr_warn("Dynamic clockmode not supported yet!\n");
break;
}
}
EXPORT_SYMBOL_GPL(bcma_core_set_clockmode);

8
include/linux/bcma/bcma.h
View File

@ -25,6 +25,11 @@ struct bcma_chipinfo {
u8 pkg;
};
enum bcma_clkmode {
BCMA_CLKMODE_FAST,
BCMA_CLKMODE_DYNAMIC,
};
struct bcma_host_ops {
u8 (*read8)(struct bcma_device *core, u16 offset);
u16 (*read16)(struct bcma_device *core, u16 offset);
@ -253,6 +258,7 @@ void bcma_awrite32(struct bcma_device *core, u16 offset, u32 value)
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);
extern void bcma_core_set_clockmode(struct bcma_device *core,
enum bcma_clkmode clkmode);
#endif /* LINUX_BCMA_H_ */