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 17:03:11 -0400 |
| commit | 7424dd0d03502b9844b96bf6efd0716b79c36607 (patch) | |
| tree | 936de32a86d93664e79e2ec6697d19bd69e1a204 | |
| parent | 3de1a7748f68c63daed7c9e04ac9f048efcd9f20 (diff) | |
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>
| -rw-r--r-- | drivers/bcma/core.c | 31 | ||||
| -rw-r--r-- | include/linux/bcma/bcma.h | 8 |
2 files changed, 38 insertions, 1 deletions
diff --git a/drivers/bcma/core.c b/drivers/bcma/core.c index 1ec7d4528dd..0686b1b5f27 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); diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index 6e5dc7b3c02..37017c1cc6b 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -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_ */ |