summaryrefslogtreecommitdiff
path: root/arch/arm/mach-davinci/clock.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-davinci/clock.c')
-rw-r--r--arch/arm/mach-davinci/clock.c39
1 files changed, 38 insertions, 1 deletions
diff --git a/arch/arm/mach-davinci/clock.c b/arch/arm/mach-davinci/clock.c
index 34668ead53c7..d458558ee84a 100644
--- a/arch/arm/mach-davinci/clock.c
+++ b/arch/arm/mach-davinci/clock.c
@@ -52,6 +52,40 @@ static void __clk_disable(struct clk *clk)
__clk_disable(clk->parent);
}
+int davinci_clk_reset(struct clk *clk, bool reset)
+{
+ unsigned long flags;
+
+ if (clk == NULL || IS_ERR(clk))
+ return -EINVAL;
+
+ spin_lock_irqsave(&clockfw_lock, flags);
+ if (clk->flags & CLK_PSC)
+ davinci_psc_reset(clk->gpsc, clk->lpsc, reset);
+ spin_unlock_irqrestore(&clockfw_lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(davinci_clk_reset);
+
+int davinci_clk_reset_assert(struct clk *clk)
+{
+ if (clk == NULL || IS_ERR(clk) || !clk->reset)
+ return -EINVAL;
+
+ return clk->reset(clk, true);
+}
+EXPORT_SYMBOL(davinci_clk_reset_assert);
+
+int davinci_clk_reset_deassert(struct clk *clk)
+{
+ if (clk == NULL || IS_ERR(clk) || !clk->reset)
+ return -EINVAL;
+
+ return clk->reset(clk, false);
+}
+EXPORT_SYMBOL(davinci_clk_reset_deassert);
+
int clk_enable(struct clk *clk)
{
unsigned long flags;
@@ -535,7 +569,7 @@ int davinci_set_refclk_rate(unsigned long rate)
}
int __init davinci_clk_init(struct clk_lookup *clocks)
- {
+{
struct clk_lookup *c;
struct clk *clk;
size_t num_clocks = 0;
@@ -576,6 +610,9 @@ int __init davinci_clk_init(struct clk_lookup *clocks)
if (clk->lpsc)
clk->flags |= CLK_PSC;
+ if (clk->flags & PSC_LRST)
+ clk->reset = davinci_clk_reset;
+
clk_register(clk);
num_clocks++;