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clk: renesas: rcar-gen3: Absorb cpg_sd_clock_calc_div()

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cpg_sd_clock_round_rate() is the sole caller of cpg_sd_clock_calc_div(),
hence absorb the latter into the former.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20190830134515.11925-5-geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven 2019-08-30 15:45:11 +02:00
parent e8adb3a0f7
commit f1195d4ec7
1 changed files with 5 additions and 14 deletions
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19
drivers/clk/renesas/rcar-gen3-cpg.c
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@ -309,15 +309,15 @@ static unsigned long cpg_sd_clock_recalc_rate(struct clk_hw *hw,
clock->div_table[clock->cur_div_idx].div);
}
static unsigned int cpg_sd_clock_calc_div(struct sd_clock *clock,
unsigned long rate,
unsigned long parent_rate)
static long cpg_sd_clock_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
unsigned long calc_rate, diff, diff_min = ULONG_MAX;
struct sd_clock *clock = to_sd_clock(hw);
unsigned int i, best_div = 0;
for (i = 0; i < clock->div_num; i++) {
calc_rate = DIV_ROUND_CLOSEST(parent_rate,
calc_rate = DIV_ROUND_CLOSEST(*parent_rate,
clock->div_table[i].div);
diff = calc_rate > rate ? calc_rate - rate : rate - calc_rate;
if (diff < diff_min) {
@ -326,16 +326,7 @@ static unsigned int cpg_sd_clock_calc_div(struct sd_clock *clock,
}
}
return best_div;
}
static long cpg_sd_clock_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
struct sd_clock *clock = to_sd_clock(hw);
unsigned int div = cpg_sd_clock_calc_div(clock, rate, *parent_rate);
return DIV_ROUND_CLOSEST(*parent_rate, div);
return DIV_ROUND_CLOSEST(*parent_rate, best_div);
}
static int cpg_sd_clock_set_rate(struct clk_hw *hw, unsigned long rate,