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iio: st_accel: support the LIS331DL sensor
This adds support for the LIS331DL sensor version. This is a simple 8bit-only accelerometer. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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4 changed files with 76 additions and 0 deletions
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@ -30,6 +30,7 @@ Accelerometers:
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- st,lsm330d-accel
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- st,lsm330dl-accel
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- st,lsm330dlc-accel
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- st,lis331dl-accel
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- st,lis331dlh-accel
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- st,lsm303dl-accel
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- st,lsm303dlm-accel
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@ -20,6 +20,7 @@
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#define LSM330D_ACCEL_DEV_NAME "lsm330d_accel"
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#define LSM330DL_ACCEL_DEV_NAME "lsm330dl_accel"
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#define LSM330DLC_ACCEL_DEV_NAME "lsm330dlc_accel"
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#define LIS331DL_ACCEL_DEV_NAME "lis331dl_accel"
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#define LIS331DLH_ACCEL_DEV_NAME "lis331dlh"
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#define LSM303DL_ACCEL_DEV_NAME "lsm303dl_accel"
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#define LSM303DLH_ACCEL_DEV_NAME "lsm303dlh_accel"
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@ -153,6 +153,28 @@
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#define ST_ACCEL_4_IG1_EN_MASK 0x08
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#define ST_ACCEL_4_MULTIREAD_BIT true
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/* CUSTOM VALUES FOR SENSOR 5 */
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#define ST_ACCEL_5_WAI_EXP 0x3b
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#define ST_ACCEL_5_ODR_ADDR 0x20
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#define ST_ACCEL_5_ODR_MASK 0x80
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#define ST_ACCEL_5_ODR_AVL_100HZ_VAL 0x00
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#define ST_ACCEL_5_ODR_AVL_400HZ_VAL 0x01
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#define ST_ACCEL_5_PW_ADDR 0x20
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#define ST_ACCEL_5_PW_MASK 0x40
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#define ST_ACCEL_5_FS_ADDR 0x20
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#define ST_ACCEL_5_FS_MASK 0x20
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#define ST_ACCEL_5_FS_AVL_2_VAL 0X00
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#define ST_ACCEL_5_FS_AVL_8_VAL 0X01
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/* TODO: check these resulting gain settings, these are not in the datsheet */
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#define ST_ACCEL_5_FS_AVL_2_GAIN IIO_G_TO_M_S_2(18000)
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#define ST_ACCEL_5_FS_AVL_8_GAIN IIO_G_TO_M_S_2(72000)
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#define ST_ACCEL_5_DRDY_IRQ_ADDR 0x22
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#define ST_ACCEL_5_DRDY_IRQ_INT1_MASK 0x04
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#define ST_ACCEL_5_DRDY_IRQ_INT2_MASK 0x20
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#define ST_ACCEL_5_IG1_EN_ADDR 0x21
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#define ST_ACCEL_5_IG1_EN_MASK 0x08
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#define ST_ACCEL_5_MULTIREAD_BIT false
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static const struct iio_chan_spec st_accel_8bit_channels[] = {
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ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
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BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
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@ -470,6 +492,54 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
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.multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
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.bootime = 2, /* guess */
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},
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{
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.wai = ST_ACCEL_5_WAI_EXP,
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.sensors_supported = {
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[0] = LIS331DL_ACCEL_DEV_NAME,
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},
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.ch = (struct iio_chan_spec *)st_accel_8bit_channels,
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.odr = {
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.addr = ST_ACCEL_5_ODR_ADDR,
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.mask = ST_ACCEL_5_ODR_MASK,
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.odr_avl = {
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{ 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL },
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{ 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL, },
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},
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},
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.pw = {
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.addr = ST_ACCEL_5_PW_ADDR,
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.mask = ST_ACCEL_5_PW_MASK,
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.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
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.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
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},
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.enable_axis = {
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.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
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.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
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},
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.fs = {
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.addr = ST_ACCEL_5_FS_ADDR,
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.mask = ST_ACCEL_5_FS_MASK,
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.fs_avl = {
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[0] = {
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.num = ST_ACCEL_FS_AVL_2G,
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.value = ST_ACCEL_5_FS_AVL_2_VAL,
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.gain = ST_ACCEL_5_FS_AVL_2_GAIN,
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},
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[1] = {
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.num = ST_ACCEL_FS_AVL_8G,
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.value = ST_ACCEL_5_FS_AVL_8_VAL,
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.gain = ST_ACCEL_5_FS_AVL_8_GAIN,
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},
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},
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},
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.drdy_irq = {
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.addr = ST_ACCEL_5_DRDY_IRQ_ADDR,
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.mask_int1 = ST_ACCEL_5_DRDY_IRQ_INT1_MASK,
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.mask_int2 = ST_ACCEL_5_DRDY_IRQ_INT2_MASK,
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},
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.multi_read_bit = ST_ACCEL_5_MULTIREAD_BIT,
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.bootime = 2, /* guess */
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},
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};
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static int st_accel_read_raw(struct iio_dev *indio_dev,
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@ -48,6 +48,10 @@ static const struct of_device_id st_accel_of_match[] = {
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.compatible = "st,lsm330dlc-accel",
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.data = LSM330DLC_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lis331dl-accel",
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.data = LIS331DL_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lis331dlh-accel",
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.data = LIS331DLH_ACCEL_DEV_NAME,
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