diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-01-31 10:05:51 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-02-08 17:50:42 +0000 |
| commit | 3f0a820c4c0b4670fb5f164baa5582e23c2ef118 (patch) | |
| tree | 6af02e1456c0316791ab95e7da9c09496f29c232 /arch/arm/plat-omap/include/mach | |
| parent | b5088c0d90b898802318c62caf2320a53df6ce57 (diff) | |
[ARM] omap: create a proper tree of clocks
Traditionally, we've tracked the parent/child relationships between
clk structures by setting the child's parent member to point at the
upstream clock. As a result, when decending the tree, we have had
to scan all clocks to find the children.
Avoid this wasteful scanning by keeping a list of the clock's children.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-omap/include/mach')
| -rw-r--r-- | arch/arm/plat-omap/include/mach/clock.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/plat-omap/include/mach/clock.h b/arch/arm/plat-omap/include/mach/clock.h index 8705902de1d..af6ae4fa46d 100644 --- a/arch/arm/plat-omap/include/mach/clock.h +++ b/arch/arm/plat-omap/include/mach/clock.h @@ -70,6 +70,8 @@ struct clk { const char *name; int id; struct clk *parent; + struct list_head children; + struct list_head sibling; /* node for children */ unsigned long rate; __u32 flags; void __iomem *enable_reg; @@ -115,7 +117,9 @@ struct clk_functions { extern unsigned int mpurate; extern int clk_init(struct clk_functions *custom_clocks); +extern void clk_init_one(struct clk *clk); extern int clk_register(struct clk *clk); +extern void clk_reparent(struct clk *child, struct clk *parent); extern void clk_unregister(struct clk *clk); extern void propagate_rate(struct clk *clk); extern void recalculate_root_clocks(void); @@ -131,8 +135,7 @@ extern const struct clkops clkops_null; /* Clock flags */ /* bit 0 is free */ #define RATE_FIXED (1 << 1) /* Fixed clock rate */ -#define RATE_PROPAGATES (1 << 2) /* Program children too */ -/* bits 3-4 are free */ +/* bits 2-4 are free */ #define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */ #define CLOCK_IDLE_CONTROL (1 << 7) #define CLOCK_NO_IDLE_PARENT (1 << 8) |