Commit 477bc918 authored by Samu Onkalo's avatar Samu Onkalo Committed by Guenter Roeck
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hwmon: lis3: Adjust fuzziness for 8 bit device 



Default fuziness is set smaller for 8 device.
In 12 bit device LSB is quite close to 1 mg
(mg = 1 / 1000 of earth gravity).
In 8bit device LSB is about 18 mg.
Set fuziness to 1 for 8 bit device.

Signed-off-by: default avatarSamu Onkalo <samu.p.onkalo@nokia.com>
Acked-by: default avatarEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
parent cc23aa1c

drivers/hwmon/lis3lv02d.c

+14 −4
Original line number Diff line number Diff line
@@ -71,8 +71,10 @@ 
#define LIS3_SENSITIVITY_12B		((LIS3_ACCURACY * 1000) / 1024)

#define LIS3_SENSITIVITY_8B		(18 * LIS3_ACCURACY)



#define LIS3_DEFAULT_FUZZ		3

#define LIS3_DEFAULT_FLAT		3

#define LIS3_DEFAULT_FUZZ_12B		3

#define LIS3_DEFAULT_FLAT_12B		3

#define LIS3_DEFAULT_FUZZ_8B		1

#define LIS3_DEFAULT_FLAT_8B		1



struct lis3lv02d lis3_dev = {

	.misc_wait   = __WAIT_QUEUE_HEAD_INITIALIZER(lis3_dev.misc_wait),
@@ -564,8 +566,16 @@ int lis3lv02d_joystick_enable(void) 


	set_bit(EV_ABS, input_dev->evbit);

	max_val = (lis3_dev.mdps_max_val * lis3_dev.scale) / LIS3_ACCURACY;

	fuzz = (LIS3_DEFAULT_FUZZ * lis3_dev.scale) / LIS3_ACCURACY;

	flat = (LIS3_DEFAULT_FLAT * lis3_dev.scale) / LIS3_ACCURACY;

	if (lis3_dev.whoami == WAI_12B) {

		fuzz = LIS3_DEFAULT_FUZZ_12B;

		flat = LIS3_DEFAULT_FLAT_12B;

	} else {

		fuzz = LIS3_DEFAULT_FUZZ_8B;

		flat = LIS3_DEFAULT_FLAT_8B;

	}

	fuzz = (fuzz * lis3_dev.scale) / LIS3_ACCURACY;

	flat = (flat * lis3_dev.scale) / LIS3_ACCURACY;



	input_set_abs_params(input_dev, ABS_X, -max_val, max_val, fuzz, flat);

	input_set_abs_params(input_dev, ABS_Y, -max_val, max_val, fuzz, flat);

	input_set_abs_params(input_dev, ABS_Z, -max_val, max_val, fuzz, flat);

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