[PATCH 2/4] lis3: add free-fall/wakeup function via platform_data

From: Daniel Mack
Date: Mon Jun 22 2009 - 09:38:43 EST


This offers a way for platforms to define flags and thresholds for the
free-fall/wakeup functions of the lis302d chips.

More registers needed to be seperated as they are specific to the
different models.

Signed-off-by: Daniel Mack <daniel@xxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Eric Piel <eric.piel@xxxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/hwmon/lis3lv02d.c | 9 +++++++++
drivers/hwmon/lis3lv02d.h | 24 ++++++++++++++++++------
include/linux/lis3lv02d.h | 9 +++++++++
3 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/hwmon/lis3lv02d.c
index 271338b..cf5afb9 100644
--- a/drivers/hwmon/lis3lv02d.c
+++ b/drivers/hwmon/lis3lv02d.c
@@ -454,6 +454,15 @@ int lis3lv02d_init_device(struct lis3lv02d *dev)
(p->click_thresh_y << 4));
}

+ if (p->wakeup_flags && (dev->whoami == LIS_SINGLE_ID)) {
+ dev->write(dev, FF_WU_CFG_1, p->wakeup_flags);
+ 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);
+ }
+
if (p->irq_cfg)
dev->write(dev, CTRL_REG3, p->irq_cfg);
}
diff --git a/drivers/hwmon/lis3lv02d.h b/drivers/hwmon/lis3lv02d.h
index e320e2f..3e1ff46 100644
--- a/drivers/hwmon/lis3lv02d.h
+++ b/drivers/hwmon/lis3lv02d.h
@@ -58,15 +58,17 @@ enum lis3_reg {
OUTZ_L = 0x2C,
OUTZ_H = 0x2D,
OUTZ = 0x2D,
- FF_WU_CFG = 0x30,
- FF_WU_SRC = 0x31,
- FF_WU_ACK = 0x32,
- FF_WU_THS_L = 0x34,
- FF_WU_THS_H = 0x35,
- FF_WU_DURATION = 0x36,
};

enum lis302d_reg {
+ FF_WU_CFG_1 = 0x30,
+ FF_WU_SRC_1 = 0x31,
+ FF_WU_THS_1 = 0x32,
+ FF_WU_DURATION_1 = 0x33,
+ FF_WU_CFG_2 = 0x34,
+ FF_WU_SRC_2 = 0x35,
+ FF_WU_THS_2 = 0x36,
+ FF_WU_DURATION_2 = 0x37,
CLICK_CFG = 0x38,
CLICK_SRC = 0x39,
CLICK_THSY_X = 0x3B,
@@ -77,6 +79,12 @@ enum lis302d_reg {
};

enum lis3lv02d_reg {
+ FF_WU_CFG = 0x30,
+ FF_WU_SRC = 0x31,
+ FF_WU_ACK = 0x32,
+ FF_WU_THS_L = 0x34,
+ FF_WU_THS_H = 0x35,
+ FF_WU_DURATION = 0x36,
DD_CFG = 0x38,
DD_SRC = 0x39,
DD_ACK = 0x3A,
@@ -107,6 +115,10 @@ enum lis3lv02d_ctrl2 {
CTRL2_FS = 0x80, /* Full Scale selection */
};

+enum lis302d_ctrl2 {
+ HP_FF_WU2 = 0x08,
+ HP_FF_WU1 = 0x04,
+};

enum lis3lv02d_ctrl3 {
CTRL3_CFS0 = 0x01,
diff --git a/include/linux/lis3lv02d.h b/include/linux/lis3lv02d.h
index 113778b..3cc2f2c 100644
--- a/include/linux/lis3lv02d.h
+++ b/include/linux/lis3lv02d.h
@@ -34,6 +34,15 @@ struct lis3lv02d_platform_data {
#define LIS3_IRQ_OPEN_DRAIN (1 << 6)
#define LIS3_IRQ_ACTIVE_LOW (1 << 7)
unsigned char irq_cfg;
+
+#define LIS3_WAKEUP_X_LO (1 << 0)
+#define LIS3_WAKEUP_X_HI (1 << 1)
+#define LIS3_WAKEUP_Y_LO (1 << 2)
+#define LIS3_WAKEUP_Y_HI (1 << 3)
+#define LIS3_WAKEUP_Z_LO (1 << 4)
+#define LIS3_WAKEUP_Z_HI (1 << 5)
+ unsigned char wakeup_flags;
+ unsigned char wakeup_thresh;
};

#endif /* __LIS3LV02D_H_ */
--
1.6.3.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/