Commit 77a374c2 authored Jan 28, 2014 by Arnd Bergmann

ARM: sa1100: normalize clk API



sa1100 provides its own variant of the clk API rather than using the
generic COMMON_CLK API. This generally works, but it causes some link
errors with drivers using the clk_set_rate, clk_get_parent, clk_set_parent
or clk_round_rate functions when a platform lacks those interfaces.

This adds trivial stub implementations for each of them, based on
the behavior of the COMMON_CLK implementation:

- set_rate() and set_parent() report success without doing anything
- round_rate() returns the clk rate
- get_parent() returns NULL.

This adds the minimal bloat and should do the right thing for
the simple clock hardware in this SoC.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

parent 31d5cf14

arch/arm/mach-sa1100/clock.c

+25 −0

Original line number	Diff line number	Diff line
		@@ -35,6 +35,31 @@ struct clk clk_##_name = { \

		static DEFINE_SPINLOCK(clocks_lock);

		/* Dummy clk routine to build generic kernel parts that may be using them */
		long clk_round_rate(struct clk *clk, unsigned long rate)
		{
		return clk_get_rate(clk);
		}
		EXPORT_SYMBOL(clk_round_rate);

		int clk_set_rate(struct clk *clk, unsigned long rate)
		{
		return 0;
		}
		EXPORT_SYMBOL(clk_set_rate);

		int clk_set_parent(struct clk clk, struct clk parent)
		{
		return 0;
		}
		EXPORT_SYMBOL(clk_set_parent);

		struct clk clk_get_parent(struct clk clk)
		{
		return NULL;
		}
		EXPORT_SYMBOL(clk_get_parent);

		static void clk_gpio27_enable(struct clk *clk)
		{
		/*