Commit 342c5f12 authored by Samu Onkalo's avatar Samu Onkalo Committed by Linus Torvalds
Browse files

lis3: introduce platform data for second ff / wu unit 



8 bit device has two wakeup / free fall units.  It was not possible to
configure the second unit.  This patch introduces configuration entry to
the platform data and also corresponding changes to the 8 bit setup
function.

High pass filters were enabled by default.  Patch introduces configuration
option for high pass filter cut off frequency and also possibility to
disable or enable the filter via platform data.  Since the control is a
new one and default state was filter enabled, new option is used to
disable the filter.  This way old platform data is still compatible with
the change.

Signed-off-by: default avatarSamu Onkalo <samu.p.onkalo@nokia.com>
Acked-by: default avatarEric Piel <eric.piel@tremplin-utc.net>
Tested-by: default avatarDaniel Mack <daniel@caiaq.de>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ecc437ae

drivers/hwmon/lis3lv02d.c

+13 −2
Original line number Diff line number Diff line
@@ -524,6 +524,8 @@ EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs); 
static void lis3lv02d_8b_configure(struct lis3lv02d *dev,

				struct lis3lv02d_platform_data *p)

{

	int ctrl2 = p->hipass_ctrl;



	if (p->click_flags) {

		dev->write(dev, CLICK_CFG, p->click_flags);

		dev->write(dev, CLICK_TIMELIMIT, p->click_time_limit);
@@ -540,9 +542,18 @@ static void lis3lv02d_8b_configure(struct lis3lv02d *dev, 
		dev->write(dev, FF_WU_THS_1, p->wakeup_thresh & 0x7f);

		/* default to 2.5ms for now */

		dev->write(dev, FF_WU_DURATION_1, 1);

		/* enable high pass filter for both free-fall units */

		dev->write(dev, CTRL_REG2, HP_FF_WU1 | HP_FF_WU2);

		ctrl2 ^= HP_FF_WU1; /* Xor to keep compatible with old pdata*/

	}



	if (p->wakeup_flags2) {

		dev->write(dev, FF_WU_CFG_2, p->wakeup_flags2);

		dev->write(dev, FF_WU_THS_2, p->wakeup_thresh2 & 0x7f);

		/* default to 2.5ms for now */

		dev->write(dev, FF_WU_DURATION_2, 1);

		ctrl2 ^= HP_FF_WU2; /* Xor to keep compatible with old pdata*/

	}

	/* Configure hipass filters */

	dev->write(dev, CTRL_REG2, ctrl2);

}



/*

include/linux/lis3lv02d.h

+9 −0
Original line number Diff line number Diff line
@@ -43,6 +43,15 @@ struct lis3lv02d_platform_data { 
#define LIS3_WAKEUP_Z_HI	(1 << 5)

	unsigned char wakeup_flags;

	unsigned char wakeup_thresh;

	unsigned char wakeup_flags2;

	unsigned char wakeup_thresh2;

#define LIS3_HIPASS_CUTFF_8HZ   0

#define LIS3_HIPASS_CUTFF_4HZ   1

#define LIS3_HIPASS_CUTFF_2HZ   2

#define LIS3_HIPASS_CUTFF_1HZ   3

#define LIS3_HIPASS1_DISABLE    (1 << 2)

#define LIS3_HIPASS2_DISABLE    (1 << 3)

	unsigned char hipass_ctrl;

#define LIS3_NO_MAP		0

#define LIS3_DEV_X		1

#define LIS3_DEV_Y		2

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