From 7424dd0d03502b9844b96bf6efd0716b79c36607 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Sun, 17 Jul 2011 01:06:04 +0200 Subject: [PATCH] bcma: allow setting FAST clockmode for a core MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- drivers/bcma/core.c | 31 +++++++++++++++++++++++++++++++ include/linux/bcma/bcma.h | 8 +++++++- 2 files changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/bcma/core.c b/drivers/bcma/core.c index 1ec7d45..0686b1b 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 6e5dc7b..37017c1 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_ */ -- 2.7.4