Commit 86010c98 authored Oct 17, 2008 by Jean Delvare Committed by Jean Delvare Oct 17, 2008

hwmon: (lm85) Select the closest PWM frequency



The LM85 and compatible chips only support 8 arbitrary PWM frequencies.
The algorithm to pick one of them based on the user input is not
optimum. Improve it to always pick the closest supported frequency.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Herbert Poetzl <herbert@13thfloor.at>

parent 34e7dc6c

drivers/hwmon/lm85.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -199,10 +199,9 @@ static int FREQ_TO_REG(int freq)
		{
		int i;

		if (freq >= lm85_freq_map[7])
		return 7;
		/* Find the closest match */
		for (i = 0; i < 7; ++i)
		if (freq <= lm85_freq_map[i])
		if (freq <= (lm85_freq_map[i] + lm85_freq_map[i + 1]) / 2)
		break;
		return i;
		}

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