This adds support for the LIS331DL sensor version. This is
a simple 8bit-only accelerometer.
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
Help me figuring out how the gain values are calculated for
these sensors. I have no clue, it's not in the datasheet.
---
.../devicetree/bindings/iio/st-sensors.txt | 1 +
drivers/iio/accel/st_accel.h | 1 +
drivers/iio/accel/st_accel_core.c | 70 ++++++++++++++++++++++
drivers/iio/accel/st_accel_i2c.c | 4 ++
4 files changed, 76 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/st-sensors.txt b/Documentation/devicetree/bindings/iio/st-sensors.txt
index fb5e0c2d18b5..8a6be3bdf267 100644
--- a/Documentation/devicetree/bindings/iio/st-sensors.txt
+++ b/Documentation/devicetree/bindings/iio/st-sensors.txt
@@ -30,6 +30,7 @@ Accelerometers:
- st,lsm330d-accel
- st,lsm330dl-accel
- st,lsm330dlc-accel
+- st,lis331dl-accel
- st,lis331dlh-accel
- st,lsm303dl-accel
- st,lsm303dlm-accel
diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index 7ee9724b1428..aa1001931d0c 100644
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -20,6 +20,7 @@
#define LSM330D_ACCEL_DEV_NAME "lsm330d_accel"
#define LSM330DL_ACCEL_DEV_NAME "lsm330dl_accel"
#define LSM330DLC_ACCEL_DEV_NAME "lsm330dlc_accel"
+#define LIS331DL_ACCEL_DEV_NAME "lis331dl_accel"
#define LIS331DLH_ACCEL_DEV_NAME "lis331dlh"
#define LSM303DL_ACCEL_DEV_NAME "lsm303dl_accel"
#define LSM303DLH_ACCEL_DEV_NAME "lsm303dlh_accel"
diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index 689a9f360e7c..314db16b7a3d 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -153,6 +153,28 @@
#define ST_ACCEL_4_IG1_EN_MASK 0x08
#define ST_ACCEL_4_MULTIREAD_BIT true
+/* CUSTOM VALUES FOR SENSOR 5 */
+#define ST_ACCEL_5_WAI_EXP 0x3b
+#define ST_ACCEL_5_ODR_ADDR 0x20
+#define ST_ACCEL_5_ODR_MASK 0x80
+#define ST_ACCEL_5_ODR_AVL_100HZ_VAL 0x00
+#define ST_ACCEL_5_ODR_AVL_400HZ_VAL 0x01
+#define ST_ACCEL_5_PW_ADDR 0x20
+#define ST_ACCEL_5_PW_MASK 0x40
+#define ST_ACCEL_5_FS_ADDR 0x20
+#define ST_ACCEL_5_FS_MASK 0x20
+#define ST_ACCEL_5_FS_AVL_2_VAL 0X00
+#define ST_ACCEL_5_FS_AVL_8_VAL 0X01
+/* TODO: check these resulting gain settings, these are not in the datsheet */
+#define ST_ACCEL_5_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
+#define ST_ACCEL_5_FS_AVL_8_GAIN IIO_G_TO_M_S_2(3900)
+#define ST_ACCEL_5_DRDY_IRQ_ADDR 0x22
+#define ST_ACCEL_5_DRDY_IRQ_INT1_MASK 0x04
+#define ST_ACCEL_5_DRDY_IRQ_INT2_MASK 0x20
+#define ST_ACCEL_5_IG1_EN_ADDR 0x21
+#define ST_ACCEL_5_IG1_EN_MASK 0x08
+#define ST_ACCEL_5_MULTIREAD_BIT false
+
static const struct iio_chan_spec st_accel_8bit_channels[] = {
ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
@@ -470,6 +492,54 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
.multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
.bootime = 2, /* guess */
},
+ {
+ .wai = ST_ACCEL_5_WAI_EXP,
+ .sensors_supported = {
+ [0] = LIS331DL_ACCEL_DEV_NAME,
+ },
+ .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
+ .odr = {
+ .addr = ST_ACCEL_5_ODR_ADDR,
+ .mask = ST_ACCEL_5_ODR_MASK,
+ .odr_avl = {
+ { 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL },
+ { 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL, },
+ },
+ },
+ .pw = {
+ .addr = ST_ACCEL_5_PW_ADDR,
+ .mask = ST_ACCEL_5_PW_MASK,
+ .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .enable_axis = {
+ .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
+ .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
+ },
+ .fs = {
+ .addr = ST_ACCEL_5_FS_ADDR,
+ .mask = ST_ACCEL_5_FS_MASK,
+ .fs_avl = {
+ [0] = {
+ .num = ST_ACCEL_FS_AVL_2G,
+ .value = ST_ACCEL_5_FS_AVL_2_VAL,
+ .gain = ST_ACCEL_5_FS_AVL_2_GAIN,
+ },
+ [1] = {
+ .num = ST_ACCEL_FS_AVL_8G,
+ .value = ST_ACCEL_5_FS_AVL_8_VAL,
+ .gain = ST_ACCEL_5_FS_AVL_8_GAIN,
+ },
+ },
+ },
+ .drdy_irq = {
+ .addr = ST_ACCEL_5_DRDY_IRQ_ADDR,
+ .mask_int1 = ST_ACCEL_5_DRDY_IRQ_INT1_MASK,
+ .mask_int2 = ST_ACCEL_5_DRDY_IRQ_INT2_MASK,
+ },
+ .multi_read_bit = ST_ACCEL_5_MULTIREAD_BIT,
+ .bootime = 2, /* guess */
+ },
};
static int st_accel_read_raw(struct iio_dev *indio_dev,
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index 6b720c190b2d..d4ad72ca4a3d 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -49,6 +49,10 @@ static const struct of_device_id st_accel_of_match[] = {
.data = LSM330DLC_ACCEL_DEV_NAME,
},
{
+ .compatible = "st,lis331dl-accel",
+ .data = LIS331DL_ACCEL_DEV_NAME,
+ },
+ {
.compatible = "st,lis331dlh-accel",
.data = LIS331DLH_ACCEL_DEV_NAME,
},
--
1.9.3
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