iio: accel: st_accel: add support to lng2dm

add support to STMicroelectronics LNG2DM accelerometer to
st_accel framework

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index c6cc2c0..c68bdb6 100644 (file)
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -127,7 +127,8 @@ config IIO_ST_ACCEL_3AXIS
        help
          Say yes here to build support for STMicroelectronics accelerometers:
          LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC,
-         LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12, H3LIS331DL.
+         LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12, H3LIS331DL,
+         LNG2DM
 
          This driver can also be built as a module. If so, these modules
          will be created:

diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index f8dfdb6..7c23168 100644 (file)
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -30,6 +30,7 @@
 #define LSM303AGR_ACCEL_DEV_NAME       "lsm303agr_accel"
 #define LIS2DH12_ACCEL_DEV_NAME                "lis2dh12_accel"
 #define LIS3L02DQ_ACCEL_DEV_NAME       "lis3l02dq"
+#define LNG2DM_ACCEL_DEV_NAME          "lng2dm"
 
 /**
 * struct st_sensors_platform_data - default accel platform data

diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index da3fb06..b242457 100644 (file)
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -231,6 +231,12 @@
 #define ST_ACCEL_7_DRDY_IRQ_INT1_MASK          0x04
 #define ST_ACCEL_7_MULTIREAD_BIT               false
 
+/* CUSTOM VALUES FOR SENSOR 8 */
+#define ST_ACCEL_8_FS_AVL_2_GAIN               IIO_G_TO_M_S_2(15600)
+#define ST_ACCEL_8_FS_AVL_4_GAIN               IIO_G_TO_M_S_2(31200)
+#define ST_ACCEL_8_FS_AVL_8_GAIN               IIO_G_TO_M_S_2(62500)
+#define ST_ACCEL_8_FS_AVL_16_GAIN              IIO_G_TO_M_S_2(187500)
+
 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),
@@ -726,6 +732,73 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
                .multi_read_bit = ST_ACCEL_7_MULTIREAD_BIT,
                .bootime = 2,
        },
+       {
+               .wai = ST_ACCEL_1_WAI_EXP,
+               .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+               .sensors_supported = {
+                       [0] = LNG2DM_ACCEL_DEV_NAME,
+               },
+               .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
+               .odr = {
+                       .addr = ST_ACCEL_1_ODR_ADDR,
+                       .mask = ST_ACCEL_1_ODR_MASK,
+                       .odr_avl = {
+                               { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
+                               { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
+                               { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
+                               { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
+                               { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
+                               { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
+                               { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
+                               { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
+                       },
+               },
+               .pw = {
+                       .addr = ST_ACCEL_1_ODR_ADDR,
+                       .mask = ST_ACCEL_1_ODR_MASK,
+                       .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_1_FS_ADDR,
+                       .mask = ST_ACCEL_1_FS_MASK,
+                       .fs_avl = {
+                               [0] = {
+                                       .num = ST_ACCEL_FS_AVL_2G,
+                                       .value = ST_ACCEL_1_FS_AVL_2_VAL,
+                                       .gain = ST_ACCEL_8_FS_AVL_2_GAIN,
+                               },
+                               [1] = {
+                                       .num = ST_ACCEL_FS_AVL_4G,
+                                       .value = ST_ACCEL_1_FS_AVL_4_VAL,
+                                       .gain = ST_ACCEL_8_FS_AVL_4_GAIN,
+                               },
+                               [2] = {
+                                       .num = ST_ACCEL_FS_AVL_8G,
+                                       .value = ST_ACCEL_1_FS_AVL_8_VAL,
+                                       .gain = ST_ACCEL_8_FS_AVL_8_GAIN,
+                               },
+                               [3] = {
+                                       .num = ST_ACCEL_FS_AVL_16G,
+                                       .value = ST_ACCEL_1_FS_AVL_16_VAL,
+                                       .gain = ST_ACCEL_8_FS_AVL_16_GAIN,
+                               },
+                       },
+               },
+               .drdy_irq = {
+                       .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
+                       .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
+                       .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
+                       .addr_ihl = ST_ACCEL_1_IHL_IRQ_ADDR,
+                       .mask_ihl = ST_ACCEL_1_IHL_IRQ_MASK,
+                       .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
+               },
+               .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
+               .bootime = 2,
+       },
 };
 
 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 e9d427a..c0f8867 100644 (file)
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -84,6 +84,10 @@ static const struct of_device_id st_accel_of_match[] = {
                .compatible = "st,lis3l02dq",
                .data = LIS3L02DQ_ACCEL_DEV_NAME,
        },
+       {
+               .compatible = "st,lng2dm-accel",
+               .data = LNG2DM_ACCEL_DEV_NAME,
+       },
        {},
 };
 MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -135,6 +139,7 @@ static const struct i2c_device_id st_accel_id_table[] = {
        { LSM303AGR_ACCEL_DEV_NAME },
        { LIS2DH12_ACCEL_DEV_NAME },
        { LIS3L02DQ_ACCEL_DEV_NAME },
+       { LNG2DM_ACCEL_DEV_NAME },
        {},
 };
 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);

diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c
index efd4394..c25ac50 100644 (file)
--- a/drivers/iio/accel/st_accel_spi.c
+++ b/drivers/iio/accel/st_accel_spi.c
@@ -60,6 +60,7 @@ static const struct spi_device_id st_accel_id_table[] = {
        { LSM303AGR_ACCEL_DEV_NAME },
        { LIS2DH12_ACCEL_DEV_NAME },
        { LIS3L02DQ_ACCEL_DEV_NAME },
+       { LNG2DM_ACCEL_DEV_NAME },
        {},
 };
 MODULE_DEVICE_TABLE(spi, st_accel_id_table);