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iio: st-sensors: add support for lis3lv02d accelerometer
This adds support for the LIS3LV02 accelerometer found in the ST Microelectronics Nomadik board series. Cc: devicetree@vger.kernel.org Cc: Denis CIOCCA <denis.ciocca@st.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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4 changed files with 87 additions and 0 deletions
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@ -23,6 +23,7 @@ standard bindings from pinctrl/pinctrl-bindings.txt.
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Valid compatible strings:
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Accelerometers:
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- st,lis3lv02dl-accel
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- st,lsm303dlh-accel
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- st,lsm303dlhc-accel
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- st,lis3dh-accel
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@ -14,6 +14,7 @@
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#include <linux/types.h>
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#include <linux/iio/common/st_sensors.h>
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#define LIS3LV02DL_ACCEL_DEV_NAME "lis3lv02dl_accel"
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#define LSM303DLHC_ACCEL_DEV_NAME "lsm303dlhc_accel"
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#define LIS3DH_ACCEL_DEV_NAME "lis3dh"
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#define LSM330D_ACCEL_DEV_NAME "lsm330d_accel"
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@ -129,6 +129,30 @@
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#define ST_ACCEL_3_IG1_EN_MASK 0x08
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#define ST_ACCEL_3_MULTIREAD_BIT false
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/* CUSTOM VALUES FOR SENSOR 4 */
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#define ST_ACCEL_4_WAI_EXP 0x3a
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#define ST_ACCEL_4_ODR_ADDR 0x20
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#define ST_ACCEL_4_ODR_MASK 0x30 /* DF1 and DF0 */
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#define ST_ACCEL_4_ODR_AVL_40HZ_VAL 0x00
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#define ST_ACCEL_4_ODR_AVL_160HZ_VAL 0x01
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#define ST_ACCEL_4_ODR_AVL_640HZ_VAL 0x02
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#define ST_ACCEL_4_ODR_AVL_2560HZ_VAL 0x03
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#define ST_ACCEL_4_PW_ADDR 0x20
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#define ST_ACCEL_4_PW_MASK 0xc0
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#define ST_ACCEL_4_FS_ADDR 0x21
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#define ST_ACCEL_4_FS_MASK 0x80
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#define ST_ACCEL_4_FS_AVL_2_VAL 0X00
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#define ST_ACCEL_4_FS_AVL_6_VAL 0X01
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#define ST_ACCEL_4_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1024)
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#define ST_ACCEL_4_FS_AVL_6_GAIN IIO_G_TO_M_S_2(340)
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#define ST_ACCEL_4_BDU_ADDR 0x21
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#define ST_ACCEL_4_BDU_MASK 0x40
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#define ST_ACCEL_4_DRDY_IRQ_ADDR 0x21
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#define ST_ACCEL_4_DRDY_IRQ_INT1_MASK 0x04
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#define ST_ACCEL_4_IG1_EN_ADDR 0x21
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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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static const struct iio_chan_spec st_accel_12bit_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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@ -373,6 +397,63 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
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.multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
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.bootime = 2,
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},
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{
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.wai = ST_ACCEL_4_WAI_EXP,
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.sensors_supported = {
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[0] = LIS3LV02DL_ACCEL_DEV_NAME,
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},
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.ch = (struct iio_chan_spec *)st_accel_12bit_channels,
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.odr = {
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.addr = ST_ACCEL_4_ODR_ADDR,
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.mask = ST_ACCEL_4_ODR_MASK,
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.odr_avl = {
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{ 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
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{ 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
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{ 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
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{ 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
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},
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},
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.pw = {
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.addr = ST_ACCEL_4_PW_ADDR,
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.mask = ST_ACCEL_4_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_4_FS_ADDR,
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.mask = ST_ACCEL_4_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_4_FS_AVL_2_VAL,
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.gain = ST_ACCEL_4_FS_AVL_2_GAIN,
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},
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[1] = {
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.num = ST_ACCEL_FS_AVL_6G,
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.value = ST_ACCEL_4_FS_AVL_6_VAL,
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.gain = ST_ACCEL_4_FS_AVL_6_GAIN,
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},
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},
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},
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.bdu = {
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.addr = ST_ACCEL_4_BDU_ADDR,
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.mask = ST_ACCEL_4_BDU_MASK,
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},
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.drdy_irq = {
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.addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
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.mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
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.ig1 = {
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.en_addr = ST_ACCEL_4_IG1_EN_ADDR,
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.en_mask = ST_ACCEL_4_IG1_EN_MASK,
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},
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},
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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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static int st_accel_read_raw(struct iio_dev *indio_dev,
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@ -20,6 +20,10 @@
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#ifdef CONFIG_OF
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static const struct of_device_id st_accel_of_match[] = {
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{
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.compatible = "st,lis3lv02dl-accel",
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.data = LIS3LV02DL_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm303dlh-accel",
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.data = LSM303DLH_ACCEL_DEV_NAME,
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