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: Samu Onkalo <samu.p.onkalo@nokia.com>
Acked-by: Eric Piel <eric.piel@tremplin-utc.net>
Tested-by: Daniel Mack <daniel@caiaq.de>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/hwmon/lis3lv02d.c
index 99fd45deda41..50f312339608 100644
--- a/drivers/hwmon/lis3lv02d.c
+++ b/drivers/hwmon/lis3lv02d.c
@@ -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);
 }
 
 /*