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authorRafał Miłecki <zajec5@gmail.com>2011-07-17 03:06:04 +0400
committerJohn W. Linville <linville@tuxdriver.com>2011-07-20 01:03:11 +0400
commit7424dd0d03502b9844b96bf6efd0716b79c36607 (patch)
tree936de32a86d93664e79e2ec6697d19bd69e1a204 /drivers/bcma/core.c
parent3de1a7748f68c63daed7c9e04ac9f048efcd9f20 (diff)
downloadlinux-7424dd0d03502b9844b96bf6efd0716b79c36607.tar.xz
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/core.c')
-rw-r--r--drivers/bcma/core.c31
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);