From 7424dd0d03502b9844b96bf6efd0716b79c36607 Mon Sep 17 00:00:00 2001 From: Rafał Miłecki Date: Sun, 17 Jul 2011 01:06:04 +0200 Subject: bcma: allow setting FAST clockmode for a core MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- drivers/bcma/core.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'drivers/bcma') 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); -- cgit v1.2.3