diff options
author | dmitry pervushin <dimka@nomadgs.com> | 2007-04-24 13:39:09 +0900 |
---|---|---|
committer | Paul Mundt <lethal@hera.kernel.org> | 2007-05-07 02:11:56 +0000 |
commit | 1929cb340b74904c130fdf3de3fe5bbedb68a5aa (patch) | |
tree | 2675de406fca78e6bfd5b29535bbb220a167bc2e /arch/sh/kernel/cpu/clock.c | |
parent | 34a780a0afeb8f99c9ca9934f4cc0822541769c6 (diff) | |
download | linux-1929cb340b74904c130fdf3de3fe5bbedb68a5aa.tar.bz2 |
sh: SH7722 clock framework support.
This adds support for the SH7722 (MobileR) to the clock framework.
Signed-off-by: dmitry pervushin <dimka@nomadgs.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/clock.c')
-rw-r--r-- | arch/sh/kernel/cpu/clock.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c index abb586b12565..2075f90d76c7 100644 --- a/arch/sh/kernel/cpu/clock.c +++ b/arch/sh/kernel/cpu/clock.c @@ -98,13 +98,14 @@ int __clk_enable(struct clk *clk) if (clk->ops && clk->ops->init) clk->ops->init(clk); + kref_get(&clk->kref); + if (clk->flags & CLK_ALWAYS_ENABLED) return 0; if (likely(clk->ops && clk->ops->enable)) clk->ops->enable(clk); - kref_get(&clk->kref); return 0; } @@ -127,10 +128,15 @@ static void clk_kref_release(struct kref *kref) void __clk_disable(struct clk *clk) { + int count = kref_put(&clk->kref, clk_kref_release); + if (clk->flags & CLK_ALWAYS_ENABLED) return; - kref_put(&clk->kref, clk_kref_release); + if (!count) { /* count reaches zero, disable the clock */ + if (likely(clk->ops && clk->ops->disable)) + clk->ops->disable(clk); + } } void clk_disable(struct clk *clk) @@ -151,6 +157,15 @@ int clk_register(struct clk *clk) mutex_unlock(&clock_list_sem); + if (clk->flags & CLK_ALWAYS_ENABLED) { + pr_debug( "Clock '%s' is ALWAYS_ENABLED\n", clk->name); + if (clk->ops && clk->ops->init) + clk->ops->init(clk); + if (clk->ops && clk->ops->enable) + clk->ops->enable(clk); + pr_debug( "Enabled."); + } + return 0; } @@ -168,13 +183,18 @@ inline unsigned long clk_get_rate(struct clk *clk) int clk_set_rate(struct clk *clk, unsigned long rate) { + return clk_set_rate_ex(clk, rate, 0); +} + +int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id) +{ int ret = -EOPNOTSUPP; if (likely(clk->ops && clk->ops->set_rate)) { unsigned long flags; spin_lock_irqsave(&clock_lock, flags); - ret = clk->ops->set_rate(clk, rate); + ret = clk->ops->set_rate(clk, rate, algo_id); spin_unlock_irqrestore(&clock_lock, flags); } @@ -256,7 +276,6 @@ int __init clk_init(void) arch_init_clk_ops(&clk->ops, i); ret |= clk_register(clk); - clk_enable(clk); } /* Kick the child clocks.. */ @@ -298,3 +317,4 @@ EXPORT_SYMBOL_GPL(__clk_disable); EXPORT_SYMBOL_GPL(clk_get_rate); EXPORT_SYMBOL_GPL(clk_set_rate); EXPORT_SYMBOL_GPL(clk_recalc_rate); +EXPORT_SYMBOL_GPL(clk_set_rate_ex); |