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iio: imu: st_lsm6dsx: enable drdy-mask if available

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Enable drdy mask if available in order to mark invalid samples during
sensor bootstrap phase

Tested-by: Mario Tesi <mario.tesi@st.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Lorenzo Bianconi 2019-10-08 14:05:02 +02:00 committed by Jonathan Cameron
parent 9d8e91d916
commit 960506ed2c
3 changed files with 29 additions and 0 deletions
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2
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
View File

@ -245,6 +245,7 @@ struct st_lsm6dsx_ext_dev_settings {
* @id: List of hw id/device name supported by the driver configuration.
* @channels: IIO channels supported by the device.
* @irq_config: interrupts related registers.
* @drdy_mask: register info for data-ready mask (addr + mask).
* @odr_table: Hw sensors odr table (Hz + val).
* @fs_table: Hw sensors gain table (gain + val).
* @decimator: List of decimator register info (addr + mask).
@ -277,6 +278,7 @@ struct st_lsm6dsx_settings {
struct st_lsm6dsx_reg hla;
struct st_lsm6dsx_reg od;
} irq_config;
struct st_lsm6dsx_reg drdy_mask;
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];

6
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
View File

@ -450,13 +450,19 @@ int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw)
return read_len;
}
#define ST_LSM6DSX_INVALID_SAMPLE 0x7ffd
static int
st_lsm6dsx_push_tagged_data(struct st_lsm6dsx_hw *hw, u8 tag,
u8 *data, s64 ts)
{
s16 val = le16_to_cpu(*(__le16 *)data);
struct st_lsm6dsx_sensor *sensor;
struct iio_dev *iio_dev;
/* invalid sample during bootstrap phase */
if (val >= ST_LSM6DSX_INVALID_SAMPLE)
return -EINVAL;
/*
* EXT_TAG are managed in FIFO fashion so ST_LSM6DSX_EXT0_TAG
* corresponds to the first enabled channel, ST_LSM6DSX_EXT1_TAG

21
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
View File

@ -723,6 +723,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.len = ARRAY_SIZE(st_lsm6dsx_gyro_channels),
},
},
.drdy_mask = {
.addr = 0x13,
.mask = BIT(3),
},
.odr_table = {
[ST_LSM6DSX_ID_ACC] = {
.reg = {
@ -913,6 +917,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.len = ARRAY_SIZE(st_lsm6dsx_gyro_channels),
},
},
.drdy_mask = {
.addr = 0x13,
.mask = BIT(3),
},
.odr_table = {
[ST_LSM6DSX_ID_ACC] = {
.reg = {
@ -1080,6 +1088,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.len = ARRAY_SIZE(st_lsm6dsx_gyro_channels),
},
},
.drdy_mask = {
.addr = 0x13,
.mask = BIT(3),
},
.odr_table = {
[ST_LSM6DSX_ID_ACC] = {
.reg = {
@ -1943,6 +1955,15 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
}
}
/* enable drdy-mas if available */
if (hw->settings->drdy_mask.addr) {
reg = &hw->settings->drdy_mask;
err = regmap_update_bits(hw->regmap, reg->addr, reg->mask,
ST_LSM6DSX_SHIFT_VAL(1, reg->mask));
if (err < 0)
return err;
}
err = st_lsm6dsx_init_shub(hw);
if (err < 0)
return err;