sh: Support rate rounding for SH7722 FRQCR clocks. (fe04d779) · Commits · 戴 / test

arch/sh/kernel/cpu/sh4a/clock-sh7722.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -387,9 +387,24 @@ out_err:
		return err;
		}

		static long sh7722_frqcr_round_rate(struct clk *clk, unsigned long rate)
		{
		unsigned long parent_rate = clk->parent->rate;
		int div;

		/* look for multiplier/divisor pair */
		div = sh7722_find_divisors(parent_rate, rate);
		if (div < 0)
		return clk->rate;

		/* calculate new value of clock rate */
		return parent_rate * 2 / div;
		}

		static struct clk_ops sh7722_frqcr_clk_ops = {
		.recalc = sh7722_frqcr_recalc,
		.set_rate = sh7722_frqcr_set_rate,
		.round_rate = sh7722_frqcr_round_rate,
		};

		/*