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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>
This commit is contained in:
Jean Delvare 2008-10-17 17:51:13 +02:00 committed by Jean Delvare
parent 34e7dc6ca4
commit 86010c982d
1 changed files with 2 additions and 3 deletions
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5
drivers/hwmon/lm85.c
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@ -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;
}