Commit cf215c37 authored by Michał Mirosław's avatar Michał Mirosław Committed by Sebastian Reichel
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power: supply: ltc2941: simplify Qlsb calculation 



Replace two divisions with a subtraction+shift for a small code size
improvement and less brackets.

Signed-off-by: default avatarMichał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 8f5b3739

drivers/power/supply/ltc2941-battery-gauge.c

+4 −4
Original line number Diff line number Diff line
@@ -490,13 +490,13 @@ static int ltc294x_i2c_probe(struct i2c_client *client, 
	if (info->id == LTC2943_ID) {

		if (prescaler_exp > LTC2943_MAX_PRESCALER_EXP)

			prescaler_exp = LTC2943_MAX_PRESCALER_EXP;

		info->Qlsb = ((340 * 50000) / r_sense) /

				(4096 / (1 << (2*prescaler_exp)));

		info->Qlsb = ((340 * 50000) / r_sense) >>

			     (12 - 2*prescaler_exp);

	} else {

		if (prescaler_exp > LTC2941_MAX_PRESCALER_EXP)

			prescaler_exp = LTC2941_MAX_PRESCALER_EXP;

		info->Qlsb = ((85 * 50000) / r_sense) /

				(128 / (1 << prescaler_exp));

		info->Qlsb = ((85 * 50000) / r_sense) >>

			     (7 - prescaler_exp);

	}



	/* Read status register to check for LTC2942 */