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Commit 5f5bfb09 authored by Michele Jr De Candia's avatar Michele Jr De Candia Committed by Jean Delvare
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i2c/tsl2550: Fix lux value in extended mode 



According to the TAOS Application Note 'Controlling a Backlight with
the TSL2550 Ambient Light Sensor' (page 14), the actual lux value in
extended mode should be obtained multiplying the calculated lux value
by 5.

Signed-off-by: default avatarMichele Jr De Candia <michele.decandia@valueteam.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent a8a8a669

drivers/i2c/chips/tsl2550.c

+3 −0
Original line number Diff line number Diff line
@@ -257,6 +257,7 @@ static DEVICE_ATTR(operating_mode, S_IWUSR | S_IRUGO, 


static ssize_t __tsl2550_show_lux(struct i2c_client *client, char *buf)

{

	struct tsl2550_data *data = i2c_get_clientdata(client);

	u8 ch0, ch1;

	int ret;
@@ -274,6 +275,8 @@ static ssize_t __tsl2550_show_lux(struct i2c_client *client, char *buf) 
	ret = tsl2550_calculate_lux(ch0, ch1);

	if (ret < 0)

		return ret;

	if (data->operating_mode == 1)

		ret *= 5;



	return sprintf(buf, "%d\n", ret);

}