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>
This commit is contained in:
Arnd Bergmann 2014-01-28 21:17:41 +01:00
parent 31d5cf1476
commit 77a374c299

View File

@ -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)
{
/*