diff options
| author | Haojian Zhuang <haojian.zhuang@marvell.com> | 2011-04-08 14:15:38 +0200 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2011-07-12 13:45:19 +0200 |
| commit | 52585ccd93d75e368382af09ae336ed8f231642c (patch) | |
| tree | 34104e267dc7e219285f2c48c190c05f2f02a69e | |
| parent | ARM: pxa: enable AUTO_ZRELADDR (diff) | |
| download | linux-52585ccd93d75e368382af09ae336ed8f231642c.tar.xz linux-52585ccd93d75e368382af09ae336ed8f231642c.zip | |
ARM: pxa: add clk_set_rate()
Since there're mulitple clock rates in some device controllers, enable
clk_set_rate() for this usage.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
| -rw-r--r-- | arch/arm/mach-mmp/clock.c | 15 | ||||
| -rw-r--r-- | arch/arm/mach-mmp/clock.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/clock.c | 15 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/clock.h | 1 |
4 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-mmp/clock.c b/arch/arm/mach-mmp/clock.c index 886e05648f08..7c6f95f29142 100644 --- a/arch/arm/mach-mmp/clock.c +++ b/arch/arm/mach-mmp/clock.c @@ -88,3 +88,18 @@ unsigned long clk_get_rate(struct clk *clk) return rate; } EXPORT_SYMBOL(clk_get_rate); + +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + unsigned long flags; + int ret = -EINVAL; + + if (clk->ops->setrate) { + spin_lock_irqsave(&clocks_lock, flags); + ret = clk->ops->setrate(clk, rate); + spin_unlock_irqrestore(&clocks_lock, flags); + } + + return ret; +} +EXPORT_SYMBOL(clk_set_rate); diff --git a/arch/arm/mach-mmp/clock.h b/arch/arm/mach-mmp/clock.h index 9b027d7491f5..3143e994e672 100644 --- a/arch/arm/mach-mmp/clock.h +++ b/arch/arm/mach-mmp/clock.h @@ -12,6 +12,7 @@ struct clkops { void (*enable)(struct clk *); void (*disable)(struct clk *); unsigned long (*getrate)(struct clk *); + int (*setrate)(struct clk *, unsigned long); }; struct clk { diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c index d5152220ce94..4d466102a027 100644 --- a/arch/arm/mach-pxa/clock.c +++ b/arch/arm/mach-pxa/clock.c @@ -53,6 +53,21 @@ unsigned long clk_get_rate(struct clk *clk) } EXPORT_SYMBOL(clk_get_rate); +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + unsigned long flags; + int ret = -EINVAL; + + if (clk->ops->setrate) { + spin_lock_irqsave(&clocks_lock, flags); + ret = clk->ops->setrate(clk, rate); + spin_unlock_irqrestore(&clocks_lock, flags); + } + + return ret; +} +EXPORT_SYMBOL(clk_set_rate); + void clk_dummy_enable(struct clk *clk) { } diff --git a/arch/arm/mach-pxa/clock.h b/arch/arm/mach-pxa/clock.h index 1f2fb9c43f06..3a258b1bf1aa 100644 --- a/arch/arm/mach-pxa/clock.h +++ b/arch/arm/mach-pxa/clock.h @@ -5,6 +5,7 @@ struct clkops { void (*enable)(struct clk *); void (*disable)(struct clk *); unsigned long (*getrate)(struct clk *); + int (*setrate)(struct clk *, unsigned long); }; struct clk { |