diff options
| -rw-r--r-- | drivers/sh/clk.c | 22 | ||||
| -rw-r--r-- | include/linux/sh_clk.h | 3 |
2 files changed, 24 insertions, 1 deletions
diff --git a/drivers/sh/clk.c b/drivers/sh/clk.c index 3ac6fa0005b..018be37ef33 100644 --- a/drivers/sh/clk.c +++ b/drivers/sh/clk.c @@ -76,7 +76,7 @@ struct clk_rate_round_data; struct clk_rate_round_data { unsigned long rate; unsigned int min, max; - long (*func)(unsigned int pos, struct clk_rate_round_data *arg); + long (*func)(unsigned int, struct clk_rate_round_data *); void *arg; }; @@ -148,6 +148,26 @@ long clk_rate_table_round(struct clk *clk, return clk_rate_round_helper(&table_round); } +static long clk_rate_div_range_iter(unsigned int pos, + struct clk_rate_round_data *rounder) +{ + return clk_get_rate(rounder->arg) / pos; +} + +long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, + unsigned int div_max, unsigned long rate) +{ + struct clk_rate_round_data div_range_round = { + .min = div_min, + .max = div_max, + .func = clk_rate_div_range_iter, + .arg = clk_get_parent(clk), + .rate = rate, + }; + + return clk_rate_round_helper(&div_range_round); +} + int clk_rate_table_find(struct clk *clk, struct cpufreq_frequency_table *freq_table, unsigned long rate) diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 49f6e9b6eda..4dca992f309 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -119,6 +119,9 @@ int clk_rate_table_find(struct clk *clk, struct cpufreq_frequency_table *freq_table, unsigned long rate); +long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, + unsigned int div_max, unsigned long rate); + #define SH_CLK_MSTP32(_parent, _enable_reg, _enable_bit, _flags) \ { \ .parent = _parent, \ |