diff options
| author | Rafał Miłecki <zajec5@gmail.com> | 2011-07-17 01:06:04 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-07-19 23:03:11 +0200 |
| commit | 7424dd0d03502b9844b96bf6efd0716b79c36607 (patch) | |
| tree | 936de32a86d93664e79e2ec6697d19bd69e1a204 /drivers/bcma | |
| parent | bcma: trivial: add helpers for masking/setting (diff) | |
| download | linux-7424dd0d03502b9844b96bf6efd0716b79c36607.tar.xz linux-7424dd0d03502b9844b96bf6efd0716b79c36607.zip | |
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>
Diffstat (limited to 'drivers/bcma')
| -rw-r--r-- | drivers/bcma/core.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/bcma/core.c b/drivers/bcma/core.c index 1ec7d4528dd0..0686b1b5f27a 100644 --- a/drivers/bcma/core.c +++ b/drivers/bcma/core.c @@ -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); |