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clk: clk-fixed-factor: add set_rate/round_rate callbacks 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2014-03-13 10:15:30 +01:00
parent d043e162bb
commit b1cc0d7fc6
1 changed files with 30 additions and 0 deletions
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30
drivers/clk/clk-fixed-factor.c
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@ -35,7 +35,37 @@ static unsigned long clk_fixed_factor_recalc_rate(struct clk *clk,
return (parent_rate / f->div) * f->mult;
}
static long clk_factor_round_rate(struct clk *clk, unsigned long rate,
unsigned long *prate)
{
struct clk_fixed_factor *fix = container_of(clk, struct clk_fixed_factor, clk);
if (clk->flags & CLK_SET_RATE_PARENT) {
unsigned long best_parent;
best_parent = (rate / fix->mult) * fix->div;
*prate = clk_round_rate(clk_get_parent(clk), best_parent);
}
return (*prate / fix->div) * fix->mult;
}
static int clk_factor_set_rate(struct clk *clk, unsigned long rate,
unsigned long parent_rate)
{
struct clk_fixed_factor *fix = container_of(clk, struct clk_fixed_factor, clk);
if (clk->flags & CLK_SET_RATE_PARENT) {
printk("%s: %ld -> parent %ld\n", __func__, rate, rate * fix->div / fix->mult);
return clk_set_rate(clk_get_parent(clk), rate * fix->div / fix->mult);
}
return 0;
}
static struct clk_ops clk_fixed_factor_ops = {
.set_rate = clk_factor_set_rate,
.round_rate = clk_factor_round_rate,
.recalc_rate = clk_fixed_factor_recalc_rate,
};