[PATCH 2/3] iio: imu: st_lsm6dsx: move fs_table in st_lsm6dsx_sensor_settings

Lorenzo Bianconi
2019-07-15T21:42:31Z

Move fs_table in st_lsm6dsx_sensor_settings in order to support
sensors with different gain maps. This is a preliminary patch to add
support for LSM9DS1 sensor to st_lsm6dsx driver

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 2 +
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 175 +++++++++++++++----
2 files changed, 144 insertions(+), 33 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index 3a89f3f6e2c7..ab1c66615d67 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -201,6 +201,7 @@ struct st_lsm6dsx_ext_dev_settings {
* @max_fifo_size: Sensor max fifo length in FIFO words.
* @id: List of hw id/device name supported by the driver configuration.
* @odr_table: Hw sensors odr table (Hz + val).
+ * @fs_table: Hw sensors gain table (gain + val).
* @decimator: List of decimator register info (addr + mask).
* @batch: List of FIFO batching register info (addr + mask).
* @fifo_ops: Sensor hw FIFO parameters.
@@ -215,6 +216,7 @@ struct st_lsm6dsx_settings {
const char *name;
} id[ST_LSM6DSX_MAX_ID];
struct st_lsm6dsx_odr_table_entry odr_table[2];
+ struct st_lsm6dsx_fs_table_entry fs_table[2];
struct st_lsm6dsx_reg decimator[ST_LSM6DSX_MAX_ID];
struct st_lsm6dsx_reg batch[ST_LSM6DSX_MAX_ID];
struct st_lsm6dsx_fifo_ops fifo_ops;
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index b3c6c9792913..9aa109428a52 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -69,29 +69,6 @@
#define ST_LSM6DSX_REG_GYRO_OUT_Y_L_ADDR 0x24
#define ST_LSM6DSX_REG_GYRO_OUT_Z_L_ADDR 0x26

-static const struct st_lsm6dsx_fs_table_entry st_lsm6dsx_fs_table[] = {
- [ST_LSM6DSX_ID_ACC] = {
- .reg = {
- .addr = 0x10,
- .mask = GENMASK(3, 2),
- },
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
- },
- [ST_LSM6DSX_ID_GYRO] = {
- .reg = {
- .addr = 0x11,
- .mask = GENMASK(3, 2),
- },
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
- .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
- }
-};
-
static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
{
.wai = 0x69,
@@ -128,6 +105,28 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.odr_avl[5] = { 416, 0x06 },
},
},
+ .fs_table = {
+ [ST_LSM6DSX_ID_ACC] = {
+ .reg = {
+ .addr = 0x10,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ },
+ [ST_LSM6DSX_ID_GYRO] = {
+ .reg = {
+ .addr = 0x11,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ },
+ },
.decimator = {
[ST_LSM6DSX_ID_ACC] = {
.addr = 0x08,
@@ -204,6 +203,28 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.odr_avl[5] = { 416, 0x06 },
},
},
+ .fs_table = {
+ [ST_LSM6DSX_ID_ACC] = {
+ .reg = {
+ .addr = 0x10,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ },
+ [ST_LSM6DSX_ID_GYRO] = {
+ .reg = {
+ .addr = 0x11,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ },
+ },
.decimator = {
[ST_LSM6DSX_ID_ACC] = {
.addr = 0x08,
@@ -289,6 +310,28 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.odr_avl[5] = { 416, 0x06 },
},
},
+ .fs_table = {
+ [ST_LSM6DSX_ID_ACC] = {
+ .reg = {
+ .addr = 0x10,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ },
+ [ST_LSM6DSX_ID_GYRO] = {
+ .reg = {
+ .addr = 0x11,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ },
+ },
.decimator = {
[ST_LSM6DSX_ID_ACC] = {
.addr = 0x08,
@@ -368,6 +411,28 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.odr_avl[5] = { 416, 0x06 },
},
},
+ .fs_table = {
+ [ST_LSM6DSX_ID_ACC] = {
+ .reg = {
+ .addr = 0x10,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ },
+ [ST_LSM6DSX_ID_GYRO] = {
+ .reg = {
+ .addr = 0x11,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ },
+ },
.batch = {
[ST_LSM6DSX_ID_ACC] = {
.addr = 0x09,
@@ -462,6 +527,28 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.odr_avl[5] = { 416, 0x06 },
},
},
+ .fs_table = {
+ [ST_LSM6DSX_ID_ACC] = {
+ .reg = {
+ .addr = 0x10,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ },
+ [ST_LSM6DSX_ID_GYRO] = {
+ .reg = {
+ .addr = 0x11,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ },
+ },
.batch = {
[ST_LSM6DSX_ID_ACC] = {
.addr = 0x09,
@@ -530,6 +617,28 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.odr_avl[5] = { 416, 0x06 },
},
},
+ .fs_table = {
+ [ST_LSM6DSX_ID_ACC] = {
+ .reg = {
+ .addr = 0x10,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ },
+ [ST_LSM6DSX_ID_GYRO] = {
+ .reg = {
+ .addr = 0x11,
+ .mask = GENMASK(3, 2),
+ },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ },
+ },
.batch = {
[ST_LSM6DSX_ID_ACC] = {
.addr = 0x09,
@@ -665,23 +774,22 @@ static int st_lsm6dsx_check_whoami(struct st_lsm6dsx_hw *hw, int id,
static int st_lsm6dsx_set_full_scale(struct st_lsm6dsx_sensor *sensor,
u32 gain)
{
- struct st_lsm6dsx_hw *hw = sensor->hw;
- const struct st_lsm6dsx_reg *reg;
+ const struct st_lsm6dsx_fs_table_entry *fs_table;
unsigned int data;
int i, err;
- u8 val;

+ fs_table = &sensor->hw->settings->fs_table[sensor->id];
for (i = 0; i < ST_LSM6DSX_FS_LIST_SIZE; i++)
- if (st_lsm6dsx_fs_table[sensor->id].fs_avl[i].gain == gain)
+ if (fs_table->fs_avl[i].gain == gain)
break;

if (i == ST_LSM6DSX_FS_LIST_SIZE)
return -EINVAL;

- val = st_lsm6dsx_fs_table[sensor->id].fs_avl[i].val;
- reg = &st_lsm6dsx_fs_table[sensor->id].reg;
- data = ST_LSM6DSX_SHIFT_VAL(val, reg->mask);
- err = st_lsm6dsx_update_bits_locked(hw, reg->addr, reg->mask, data);
+ data = ST_LSM6DSX_SHIFT_VAL(fs_table->fs_avl[i].val,
+ fs_table->reg.mask);
+ err = st_lsm6dsx_update_bits_locked(sensor->hw, fs_table->reg.addr,
+ fs_table->reg.mask, data);
if (err < 0)
return err;

@@ -934,11 +1042,12 @@ static ssize_t st_lsm6dsx_sysfs_scale_avail(struct device *dev,
{
struct st_lsm6dsx_sensor *sensor = iio_priv(dev_get_drvdata(dev));
enum st_lsm6dsx_sensor_id id = sensor->id;
+ struct st_lsm6dsx_hw *hw = sensor->hw;
int i, len = 0;

for (i = 0; i < ST_LSM6DSX_FS_LIST_SIZE; i++)
len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06u ",
- st_lsm6dsx_fs_table[id].fs_avl[i].gain);
+ hw->settings->fs_table[id].fs_avl[i].gain);
buf[len - 1] = '\n';

return len;
@@ -1173,7 +1282,7 @@ static struct iio_dev *st_lsm6dsx_alloc_iiodev(struct st_lsm6dsx_hw *hw,
sensor->id = id;
sensor->hw = hw;
sensor->odr = hw->settings->odr_table[id].odr_avl[0].hz;
- sensor->gain = st_lsm6dsx_fs_table[id].fs_avl[0].gain;
+ sensor->gain = hw->settings->fs_table[id].fs_avl[0].gain;
sensor->watermark = 1;

switch (id) {
--
2.21.0