aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/clock.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/clock.c')
-rw-r--r--arch/arm/mach-omap2/clock.c46
1 files changed, 42 insertions, 4 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 1d891e4a693..aa9b37370d4 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -26,6 +26,7 @@
#include <asm/io.h>
#include <mach/clock.h>
+#include <mach/clockdomain.h>
#include <mach/sram.h>
#include <mach/cpu.h>
#include <asm/div64.h>
@@ -62,10 +63,36 @@
u8 cpu_mask;
/*-------------------------------------------------------------------------
- * Omap2 specific clock functions
+ * OMAP2/3 specific clock functions
*-------------------------------------------------------------------------*/
/**
+ * omap2_init_clk_clkdm - look up a clockdomain name, store pointer in clk
+ * @clk: OMAP clock struct ptr to use
+ *
+ * Convert a clockdomain name stored in a struct clk 'clk' into a
+ * clockdomain pointer, and save it into the struct clk. Intended to be
+ * called during clk_register(). No return value.
+ */
+void omap2_init_clk_clkdm(struct clk *clk)
+{
+ struct clockdomain *clkdm;
+
+ if (!clk->clkdm_name)
+ return;
+
+ clkdm = clkdm_lookup(clk->clkdm_name);
+ if (clkdm) {
+ pr_debug("clock: associated clk %s to clkdm %s\n",
+ clk->name, clk->clkdm_name);
+ clk->clkdm = clkdm;
+ } else {
+ pr_debug("clock: could not associate clk %s to "
+ "clkdm %s\n", clk->name, clk->clkdm_name);
+ }
+}
+
+/**
* omap2_init_clksel_parent - set a clksel clk's parent field from the hardware
* @clk: OMAP clock struct ptr to use
*
@@ -308,6 +335,9 @@ void omap2_clk_disable(struct clk *clk)
_omap2_clk_disable(clk);
if (likely((u32)clk->parent))
omap2_clk_disable(clk->parent);
+ if (clk->clkdm)
+ omap2_clkdm_clk_disable(clk->clkdm, clk);
+
}
}
@@ -324,11 +354,19 @@ int omap2_clk_enable(struct clk *clk)
return ret;
}
+ if (clk->clkdm)
+ omap2_clkdm_clk_enable(clk->clkdm, clk);
+
ret = _omap2_clk_enable(clk);
- if (unlikely(ret != 0) && clk->parent) {
- omap2_clk_disable(clk->parent);
- clk->usecount--;
+ if (unlikely(ret != 0)) {
+ if (clk->clkdm)
+ omap2_clkdm_clk_disable(clk->clkdm, clk);
+
+ if (clk->parent) {
+ omap2_clk_disable(clk->parent);
+ clk->usecount--;
+ }
}
}