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authorLorenzo Bianconi <lorenzo.bianconi@redhat.com>2018-08-30 22:52:57 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2018-09-02 21:29:24 +0100
commit5b3c87fd92d5ef462b9b3894f4d4bc452ad7eff4 (patch)
tree23d69ea5ca80809e098783b99daf675bbfa32644 /drivers/iio/imu
parent54a6d0c6882df3608103042eed7f57e6188f95ca (diff)
iio: imu: st_lsm6dsx: add addr/max_word_len to st_lsm6dsx_read_block()
Add reg addr and max_word_len parameters to st_lsm6dsx_read_block since LSM6DSO will use a different register address to read samples from the FIFO and a different sample len Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/imu')
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
index 9a1dd47afd97..ab0eec2bc70e 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
@@ -254,18 +254,18 @@ static int st_lsm6dsx_reset_hw_ts(struct st_lsm6dsx_hw *hw)
* Set max bulk read to ST_LSM6DSX_MAX_WORD_LEN in order to avoid
* a kmalloc for each bus access
*/
-static inline int st_lsm6dsx_read_block(struct st_lsm6dsx_hw *hw, u8 *data,
- unsigned int data_len)
+static inline int st_lsm6dsx_read_block(struct st_lsm6dsx_hw *hw, u8 addr,
+ u8 *data, unsigned int data_len,
+ unsigned int max_word_len)
{
unsigned int word_len, read_len = 0;
int err;
while (read_len < data_len) {
word_len = min_t(unsigned int, data_len - read_len,
- ST_LSM6DSX_MAX_WORD_LEN);
- err = regmap_bulk_read(hw->regmap,
- ST_LSM6DSX_REG_FIFO_OUTL_ADDR,
- data + read_len, word_len);
+ max_word_len);
+ err = regmap_bulk_read(hw->regmap, addr, data + read_len,
+ word_len);
if (err < 0)
return err;
read_len += word_len;
@@ -315,7 +315,9 @@ int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw)
gyro_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_GYRO]);
for (read_len = 0; read_len < fifo_len; read_len += pattern_len) {
- err = st_lsm6dsx_read_block(hw, hw->buff, pattern_len);
+ err = st_lsm6dsx_read_block(hw, ST_LSM6DSX_REG_FIFO_OUTL_ADDR,
+ hw->buff, pattern_len,
+ ST_LSM6DSX_MAX_WORD_LEN);
if (err < 0) {
dev_err(hw->dev,
"failed to read pattern from fifo (err=%d)\n",