[PATCH v2 0/2] support rational ODRs in st_lsm6dsx

[PATCH v2 0/2] support rational ODRs in st_lsm6dsx

[Lorenzo Bianconi]

Express ODRs in mHZ in order to support rational ODRs (e.g. 12.5Hz).
This series will fix an Android CTS failure.
Use u32 for ODR variables.
Explicitly define odr table size.
This series is based on 'iio: imu: st_lsm6dsx: fix ODR check in
st_lsm6dsx_write_raw'
https://patchwork.kernel.org/patch/11214281/

Changes since v1:
- express ODRs in mHZ and not in HZ / 10

Lorenzo Bianconi (2):
  iio: imu: st_lsm6dsx: explicitly define odr table size
  iio: imu: st_lsm6dsx: express odr in mHZ

 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h       |   8 +-
 .../iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c    |   9 +-
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c  | 222 ++++++++++--------
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c  |  41 ++--
 4 files changed, 153 insertions(+), 127 deletions(-)

-- 
2.21.0

[PATCH v2 1/2] iio: imu: st_lsm6dsx: explicitly define odr table size

[Lorenzo Bianconi]

Introduce odr_len in st_lsm6dsx_odr_table_entry data structure in order
to explicitly define odr table size and support devices with different
odr table map

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 | 27 +++++++++++++++-----
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 12 ++++-----
 3 files changed, 29 insertions(+), 12 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index 37e499fe6bcf..9ffc8e06f73d 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -113,7 +113,9 @@ struct st_lsm6dsx_odr {
 #define ST_LSM6DSX_ODR_LIST_SIZE	6
 struct st_lsm6dsx_odr_table_entry {
 	struct st_lsm6dsx_reg reg;
+
 	struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE];
+	int odr_len;
 };
 
 struct st_lsm6dsx_fs {
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index c53c03ec2423..2f9396745bc8 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -133,6 +133,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 238, 0x04 },
 				.odr_avl[4] = { 476, 0x05 },
 				.odr_avl[5] = { 952, 0x06 },
+				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -145,6 +146,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 238, 0x04 },
 				.odr_avl[4] = { 476, 0x05 },
 				.odr_avl[5] = { 952, 0x06 },
+				.odr_len = 6,
 			},
 		},
 		.fs_table = {
@@ -233,6 +235,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -245,6 +248,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 		},
 		.fs_table = {
@@ -397,6 +401,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -409,6 +414,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 		},
 		.fs_table = {
@@ -570,6 +576,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -582,6 +589,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 		},
 		.fs_table = {
@@ -745,6 +753,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -757,6 +766,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 		},
 		.fs_table = {
@@ -940,6 +950,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -952,6 +963,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 		},
 		.fs_table = {
@@ -1115,6 +1127,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -1127,6 +1140,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104, 0x04 },
 				.odr_avl[4] = { 208, 0x05 },
 				.odr_avl[5] = { 416, 0x06 },
+				.odr_len = 6,
 			},
 		},
 		.fs_table = {
@@ -1350,15 +1364,16 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
 	int i;
 
 	odr_table = &sensor->hw->settings->odr_table[sensor->id];
-	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++)
+	for (i = 0; i < odr_table->odr_len; i++) {
 		/*
 		 * ext devices can run at different odr respect to
 		 * accel sensor
 		 */
 		if (odr_table->odr_avl[i].hz >= odr)
 			break;
+	}
 
-	if (i == ST_LSM6DSX_ODR_LIST_SIZE)
+	if (i == odr_table->odr_len)
 		return -EINVAL;
 
 	*val = odr_table->odr_avl[i].val;
@@ -1710,13 +1725,13 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,
 					  char *buf)
 {
 	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;
+	const struct st_lsm6dsx_odr_table_entry *odr_table;
 	int i, len = 0;
 
-	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++)
+	odr_table = &sensor->hw->settings->odr_table[sensor->id];
+	for (i = 0; i < odr_table->odr_len; i++)
 		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-				 hw->settings->odr_table[id].odr_avl[i].hz);
+				 odr_table->odr_avl[i].hz);
 	buf[len - 1] = '\n';
 
 	return len;
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
index ea472cf6db7b..e029cc05a17f 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
@@ -55,6 +55,7 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
 			.odr_avl[1] = {  20, 0x1 },
 			.odr_avl[2] = {  50, 0x2 },
 			.odr_avl[3] = { 100, 0x3 },
+			.odr_len = 4,
 		},
 		.fs_table = {
 			.fs_avl[0] = {
@@ -323,11 +324,12 @@ st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
 	int i;
 
 	settings = sensor->ext_info.settings;
-	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++)
+	for (i = 0; i < settings->odr_table.odr_len; i++) {
 		if (settings->odr_table.odr_avl[i].hz == odr)
 			break;
+	}
 
-	if (i == ST_LSM6DSX_ODR_LIST_SIZE)
+	if (i == settings->odr_table.odr_len)
 		return -EINVAL;
 
 	*val = settings->odr_table.odr_avl[i].val;
@@ -537,12 +539,10 @@ st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
 	int i, len = 0;
 
 	settings = sensor->ext_info.settings;
-	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++) {
+	for (i = 0; i < settings->odr_table.odr_len; i++) {
 		u16 val = settings->odr_table.odr_avl[i].hz;
 
-		if (val > 0)
-			len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-					 val);
+		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", val);
 	}
 	buf[len - 1] = '\n';
 
-- 
2.21.0

Re: [PATCH v2 1/2] iio: imu: st_lsm6dsx: explicitly define odr table size

[Jonathan Cameron]

On Sun,  3 Nov 2019 20:47:17 +0100
Lorenzo Bianconi <lorenzo@kernel.org> wrote:

> Introduce odr_len in st_lsm6dsx_odr_table_entry data structure in order
> to explicitly define odr table size and support devices with different
> odr table map
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h      |  2 ++
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 27 +++++++++++++++-----
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 12 ++++-----
>  3 files changed, 29 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> index 37e499fe6bcf..9ffc8e06f73d 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> @@ -113,7 +113,9 @@ struct st_lsm6dsx_odr {
>  #define ST_LSM6DSX_ODR_LIST_SIZE	6
>  struct st_lsm6dsx_odr_table_entry {
>  	struct st_lsm6dsx_reg reg;
> +
>  	struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE];
> +	int odr_len;
>  };
>  
>  struct st_lsm6dsx_fs {
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index c53c03ec2423..2f9396745bc8 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -133,6 +133,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 238, 0x04 },
>  				.odr_avl[4] = { 476, 0x05 },
>  				.odr_avl[5] = { 952, 0x06 },
> +				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
>  				.reg = {
> @@ -145,6 +146,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 238, 0x04 },
>  				.odr_avl[4] = { 476, 0x05 },
>  				.odr_avl[5] = { 952, 0x06 },
> +				.odr_len = 6,
>  			},
>  		},
>  		.fs_table = {
> @@ -233,6 +235,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
>  				.reg = {
> @@ -245,6 +248,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  		},
>  		.fs_table = {
> @@ -397,6 +401,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
>  				.reg = {
> @@ -409,6 +414,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  		},
>  		.fs_table = {
> @@ -570,6 +576,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
>  				.reg = {
> @@ -582,6 +589,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  		},
>  		.fs_table = {
> @@ -745,6 +753,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
>  				.reg = {
> @@ -757,6 +766,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  		},
>  		.fs_table = {
> @@ -940,6 +950,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
>  				.reg = {
> @@ -952,6 +963,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  		},
>  		.fs_table = {
> @@ -1115,6 +1127,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
>  				.reg = {
> @@ -1127,6 +1140,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  				.odr_avl[3] = { 104, 0x04 },
>  				.odr_avl[4] = { 208, 0x05 },
>  				.odr_avl[5] = { 416, 0x06 },
> +				.odr_len = 6,
>  			},
>  		},
>  		.fs_table = {
> @@ -1350,15 +1364,16 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
>  	int i;
>  
>  	odr_table = &sensor->hw->settings->odr_table[sensor->id];
> -	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++)
> +	for (i = 0; i < odr_table->odr_len; i++) {
>  		/*
>  		 * ext devices can run at different odr respect to
>  		 * accel sensor
>  		 */
>  		if (odr_table->odr_avl[i].hz >= odr)
>  			break;
> +	}
>  
> -	if (i == ST_LSM6DSX_ODR_LIST_SIZE)
> +	if (i == odr_table->odr_len)
>  		return -EINVAL;
>  
>  	*val = odr_table->odr_avl[i].val;
> @@ -1710,13 +1725,13 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,
>  					  char *buf)
>  {
>  	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;
> +	const struct st_lsm6dsx_odr_table_entry *odr_table;
>  	int i, len = 0;
>  
> -	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++)
> +	odr_table = &sensor->hw->settings->odr_table[sensor->id];
> +	for (i = 0; i < odr_table->odr_len; i++)
>  		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
> -				 hw->settings->odr_table[id].odr_avl[i].hz);
> +				 odr_table->odr_avl[i].hz);
>  	buf[len - 1] = '\n';
>  
>  	return len;
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> index ea472cf6db7b..e029cc05a17f 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> @@ -55,6 +55,7 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
>  			.odr_avl[1] = {  20, 0x1 },
>  			.odr_avl[2] = {  50, 0x2 },
>  			.odr_avl[3] = { 100, 0x3 },
> +			.odr_len = 4,
>  		},
>  		.fs_table = {
>  			.fs_avl[0] = {
> @@ -323,11 +324,12 @@ st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
>  	int i;
>  
>  	settings = sensor->ext_info.settings;
> -	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++)
> +	for (i = 0; i < settings->odr_table.odr_len; i++) {
>  		if (settings->odr_table.odr_avl[i].hz == odr)
>  			break;
> +	}
>  
> -	if (i == ST_LSM6DSX_ODR_LIST_SIZE)
> +	if (i == settings->odr_table.odr_len)
>  		return -EINVAL;
>  
>  	*val = settings->odr_table.odr_avl[i].val;
> @@ -537,12 +539,10 @@ st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
>  	int i, len = 0;
>  
>  	settings = sensor->ext_info.settings;
> -	for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++) {
> +	for (i = 0; i < settings->odr_table.odr_len; i++) {
>  		u16 val = settings->odr_table.odr_avl[i].hz;
>  
> -		if (val > 0)
> -			len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
> -					 val);
> +		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", val);
>  	}
>  	buf[len - 1] = '\n';
>  

[PATCH v2 2/2] iio: imu: st_lsm6dsx: express odr in mHZ

[Lorenzo Bianconi]

Express available frequencies in mHZ in order to support even
rational ODRs. This patch is need to fix an Android CTS failure

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h       |   6 +-
 .../iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c    |   9 +-
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c  | 197 +++++++++---------
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c  |  31 +--
 4 files changed, 126 insertions(+), 117 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index 9ffc8e06f73d..8ea969e1b72b 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -106,7 +106,7 @@ struct st_lsm6dsx_sensor;
 struct st_lsm6dsx_hw;
 
 struct st_lsm6dsx_odr {
-	u16 hz;
+	u32 hz; /* expressed in mHZ */
 	u8 val;
 };
 
@@ -330,7 +330,7 @@ struct st_lsm6dsx_sensor {
 	struct st_lsm6dsx_hw *hw;
 
 	u32 gain;
-	u16 odr;
+	u32 odr;
 
 	u16 watermark;
 	u8 sip;
@@ -415,7 +415,7 @@ int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
 			     enum st_lsm6dsx_fifo_mode fifo_mode);
 int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw);
 int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw);
-int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val);
+int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val);
 int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name);
 int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable);
 int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable);
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
index 31cd90d2c60e..d416990ae309 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
@@ -91,7 +91,7 @@ static int st_lsm6dsx_get_decimator_val(u8 val)
 }
 
 static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
-				       u16 *max_odr, u16 *min_odr)
+				       u32 *max_odr, u32 *min_odr)
 {
 	struct st_lsm6dsx_sensor *sensor;
 	int i;
@@ -106,16 +106,17 @@ static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
 		if (!(hw->enable_mask & BIT(sensor->id)))
 			continue;
 
-		*max_odr = max_t(u16, *max_odr, sensor->odr);
-		*min_odr = min_t(u16, *min_odr, sensor->odr);
+		*max_odr = max_t(u32, *max_odr, sensor->odr);
+		*min_odr = min_t(u32, *min_odr, sensor->odr);
 	}
 }
 
 static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw)
 {
-	u16 max_odr, min_odr, sip = 0, ts_sip = 0;
 	const struct st_lsm6dsx_reg *ts_dec_reg;
 	struct st_lsm6dsx_sensor *sensor;
+	u16 sip = 0, ts_sip = 0;
+	u32 max_odr, min_odr;
 	int err = 0, i;
 	u8 data;
 
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 2f9396745bc8..03e5cd0cfcba 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -127,12 +127,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x20,
 					.mask = GENMASK(7, 5),
 				},
-				.odr_avl[0] = {  10, 0x01 },
-				.odr_avl[1] = {  50, 0x02 },
-				.odr_avl[2] = { 119, 0x03 },
-				.odr_avl[3] = { 238, 0x04 },
-				.odr_avl[4] = { 476, 0x05 },
-				.odr_avl[5] = { 952, 0x06 },
+				.odr_avl[0] = {  10000, 0x01 },
+				.odr_avl[1] = {  50000, 0x02 },
+				.odr_avl[2] = { 119000, 0x03 },
+				.odr_avl[3] = { 238000, 0x04 },
+				.odr_avl[4] = { 476000, 0x05 },
+				.odr_avl[5] = { 952000, 0x06 },
 				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -140,12 +140,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(7, 5),
 				},
-				.odr_avl[0] = {  15, 0x01 },
-				.odr_avl[1] = {  60, 0x02 },
-				.odr_avl[2] = { 119, 0x03 },
-				.odr_avl[3] = { 238, 0x04 },
-				.odr_avl[4] = { 476, 0x05 },
-				.odr_avl[5] = { 952, 0x06 },
+				.odr_avl[0] = {  14900, 0x01 },
+				.odr_avl[1] = {  59500, 0x02 },
+				.odr_avl[2] = { 119000, 0x03 },
+				.odr_avl[3] = { 238000, 0x04 },
+				.odr_avl[4] = { 476000, 0x05 },
+				.odr_avl[5] = { 952000, 0x06 },
 				.odr_len = 6,
 			},
 		},
@@ -229,12 +229,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -242,12 +242,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 		},
@@ -395,12 +395,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -408,12 +408,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 		},
@@ -570,12 +570,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -583,12 +583,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 		},
@@ -747,12 +747,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -760,12 +760,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 		},
@@ -944,12 +944,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -957,12 +957,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 		},
@@ -1121,12 +1121,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -1134,12 +1134,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(7, 4),
 				},
-				.odr_avl[0] = {  13, 0x01 },
-				.odr_avl[1] = {  26, 0x02 },
-				.odr_avl[2] = {  52, 0x03 },
-				.odr_avl[3] = { 104, 0x04 },
-				.odr_avl[4] = { 208, 0x05 },
-				.odr_avl[5] = { 416, 0x06 },
+				.odr_avl[0] = {  12500, 0x01 },
+				.odr_avl[1] = {  26000, 0x02 },
+				.odr_avl[2] = {  52000, 0x03 },
+				.odr_avl[3] = { 104000, 0x04 },
+				.odr_avl[4] = { 208000, 0x05 },
+				.odr_avl[5] = { 416000, 0x06 },
 				.odr_len = 6,
 			},
 		},
@@ -1358,7 +1358,7 @@ static int st_lsm6dsx_set_full_scale(struct st_lsm6dsx_sensor *sensor,
 	return 0;
 }
 
-int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
+int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val)
 {
 	const struct st_lsm6dsx_odr_table_entry *odr_table;
 	int i;
@@ -1380,14 +1380,15 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
 	return odr_table->odr_avl[i].hz;
 }
 
-static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
-					   enum st_lsm6dsx_sensor_id id)
+static int
+st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u32 odr,
+				enum st_lsm6dsx_sensor_id id)
 {
 	struct st_lsm6dsx_sensor *ref = iio_priv(hw->iio_devs[id]);
 
 	if (odr > 0) {
 		if (hw->enable_mask & BIT(id))
-			return max_t(u16, ref->odr, odr);
+			return max_t(u32, ref->odr, odr);
 		else
 			return odr;
 	} else {
@@ -1395,7 +1396,8 @@ static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
 	}
 }
 
-static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
+static int
+st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u32 req_odr)
 {
 	struct st_lsm6dsx_sensor *ref_sensor = sensor;
 	struct st_lsm6dsx_hw *hw = sensor->hw;
@@ -1409,7 +1411,7 @@ static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
 	case ST_LSM6DSX_ID_EXT1:
 	case ST_LSM6DSX_ID_EXT2:
 	case ST_LSM6DSX_ID_ACC: {
-		u16 odr;
+		u32 odr;
 		int i;
 
 		/*
@@ -1449,7 +1451,7 @@ int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor,
 				 bool enable)
 {
 	struct st_lsm6dsx_hw *hw = sensor->hw;
-	u16 odr = enable ? sensor->odr : 0;
+	u32 odr = enable ? sensor->odr : 0;
 	int err;
 
 	err = st_lsm6dsx_set_odr(sensor, odr);
@@ -1475,7 +1477,7 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor,
 	if (err < 0)
 		return err;
 
-	delay = 1000000 / sensor->odr;
+	delay = 1000000000 / sensor->odr;
 	usleep_range(delay, 2 * delay);
 
 	err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data));
@@ -1507,8 +1509,9 @@ static int st_lsm6dsx_read_raw(struct iio_dev *iio_dev,
 		iio_device_release_direct_mode(iio_dev);
 		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		*val = sensor->odr;
-		ret = IIO_VAL_INT;
+		*val = sensor->odr / 1000;
+		*val2 = (sensor->odr % 1000) * 1000;
+		ret = IIO_VAL_INT_PLUS_MICRO;
 		break;
 	case IIO_CHAN_INFO_SCALE:
 		*val = 0;
@@ -1541,6 +1544,7 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev,
 	case IIO_CHAN_INFO_SAMP_FREQ: {
 		u8 data;
 
+		val = val * 1000 + val2 / 1000;
 		val = st_lsm6dsx_check_odr(sensor, val, &data);
 		if (val < 0)
 			err = val;
@@ -1730,8 +1734,9 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,
 
 	odr_table = &sensor->hw->settings->odr_table[sensor->id];
 	for (i = 0; i < odr_table->odr_len; i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-				 odr_table->odr_avl[i].hz);
+		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
+				 odr_table->odr_avl[i].hz / 1000,
+				 odr_table->odr_avl[i].hz % 1000);
 	buf[len - 1] = '\n';
 
 	return len;
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
index e029cc05a17f..3a0cb71ce926 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
@@ -51,10 +51,10 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
 				.addr = 0x60,
 				.mask = GENMASK(3, 2),
 			},
-			.odr_avl[0] = {  10, 0x0 },
-			.odr_avl[1] = {  20, 0x1 },
-			.odr_avl[2] = {  50, 0x2 },
-			.odr_avl[3] = { 100, 0x3 },
+			.odr_avl[0] = {  10000, 0x0 },
+			.odr_avl[1] = {  20000, 0x1 },
+			.odr_avl[2] = {  50000, 0x2 },
+			.odr_avl[3] = { 100000, 0x3 },
 			.odr_len = 4,
 		},
 		.fs_table = {
@@ -94,11 +94,11 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
 static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw)
 {
 	struct st_lsm6dsx_sensor *sensor;
-	u16 odr;
+	u32 odr;
 
 	sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
-	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 13;
-	msleep((2000U / odr) + 1);
+	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 12500;
+	msleep((2000000U / odr) + 1);
 }
 
 /**
@@ -318,7 +318,7 @@ st_lsm6dsx_shub_write_with_mask(struct st_lsm6dsx_sensor *sensor,
 
 static int
 st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
-			    u16 odr, u16 *val)
+			    u32 odr, u16 *val)
 {
 	const struct st_lsm6dsx_ext_dev_settings *settings;
 	int i;
@@ -337,7 +337,7 @@ st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
 }
 
 static int
-st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u16 odr)
+st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u32 odr)
 {
 	const struct st_lsm6dsx_ext_dev_settings *settings;
 	u16 val;
@@ -442,7 +442,7 @@ st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor,
 	if (err < 0)
 		return err;
 
-	delay = 1000000 / sensor->odr;
+	delay = 1000000000 / sensor->odr;
 	usleep_range(delay, 2 * delay);
 
 	len = min_t(int, sizeof(data), ch->scan_type.realbits >> 3);
@@ -482,8 +482,9 @@ st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev,
 		iio_device_release_direct_mode(iio_dev);
 		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		*val = sensor->odr;
-		ret = IIO_VAL_INT;
+		*val = sensor->odr / 1000;
+		*val2 = (sensor->odr % 1000) * 1000;
+		ret = IIO_VAL_INT_PLUS_MICRO;
 		break;
 	case IIO_CHAN_INFO_SCALE:
 		*val = 0;
@@ -514,6 +515,7 @@ st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
 	case IIO_CHAN_INFO_SAMP_FREQ: {
 		u16 data;
 
+		val = val * 1000 + val2 / 1000;
 		err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data);
 		if (!err)
 			sensor->odr = val;
@@ -540,9 +542,10 @@ st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
 
 	settings = sensor->ext_info.settings;
 	for (i = 0; i < settings->odr_table.odr_len; i++) {
-		u16 val = settings->odr_table.odr_avl[i].hz;
+		u32 val = settings->odr_table.odr_avl[i].hz;
 
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", val);
+		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
+				 val / 1000, val % 1000);
 	}
 	buf[len - 1] = '\n';
 
-- 
2.21.0

Re: [PATCH v2 2/2] iio: imu: st_lsm6dsx: express odr in mHZ

[Jonathan Cameron]

On Sun,  3 Nov 2019 20:47:18 +0100
Lorenzo Bianconi <lorenzo@kernel.org> wrote:

> Express available frequencies in mHZ in order to support even
> rational ODRs. This patch is need to fix an Android CTS failure
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
I've pulled the earlier fix across from the fixes-togreg branch as
I 'think' I'll get a pull request out before the merge window
whereas fixes will now be after.

One thing inline that I'll fix up.

> ---
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h       |   6 +-
>  .../iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c    |   9 +-
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c  | 197 +++++++++---------
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c  |  31 +--
>  4 files changed, 126 insertions(+), 117 deletions(-)
> 
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> index 9ffc8e06f73d..8ea969e1b72b 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> @@ -106,7 +106,7 @@ struct st_lsm6dsx_sensor;
>  struct st_lsm6dsx_hw;
>  
>  struct st_lsm6dsx_odr {
> -	u16 hz;
> +	u32 hz; /* expressed in mHZ */
Don't call it hz and express in it in milli hz!

	u32 milli_hz; will do nicely. + no
need for comment then...

>  	u8 val;
>  };
>  
> @@ -330,7 +330,7 @@ struct st_lsm6dsx_sensor {
>  	struct st_lsm6dsx_hw *hw;
>  
>  	u32 gain;
> -	u16 odr;
> +	u32 odr;
>  
>  	u16 watermark;
>  	u8 sip;
> @@ -415,7 +415,7 @@ int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
>  			     enum st_lsm6dsx_fifo_mode fifo_mode);
>  int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw);
>  int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw);
> -int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val);
> +int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val);
>  int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name);
>  int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable);
>  int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable);
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> index 31cd90d2c60e..d416990ae309 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> @@ -91,7 +91,7 @@ static int st_lsm6dsx_get_decimator_val(u8 val)
>  }
>  
>  static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
> -				       u16 *max_odr, u16 *min_odr)
> +				       u32 *max_odr, u32 *min_odr)
>  {
>  	struct st_lsm6dsx_sensor *sensor;
>  	int i;
> @@ -106,16 +106,17 @@ static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
>  		if (!(hw->enable_mask & BIT(sensor->id)))
>  			continue;
>  
> -		*max_odr = max_t(u16, *max_odr, sensor->odr);
> -		*min_odr = min_t(u16, *min_odr, sensor->odr);
> +		*max_odr = max_t(u32, *max_odr, sensor->odr);
> +		*min_odr = min_t(u32, *min_odr, sensor->odr);
>  	}
>  }
>  
>  static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw)
>  {
> -	u16 max_odr, min_odr, sip = 0, ts_sip = 0;
>  	const struct st_lsm6dsx_reg *ts_dec_reg;
>  	struct st_lsm6dsx_sensor *sensor;
> +	u16 sip = 0, ts_sip = 0;
> +	u32 max_odr, min_odr;
>  	int err = 0, i;
>  	u8 data;
>  
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index 2f9396745bc8..03e5cd0cfcba 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -127,12 +127,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x20,
>  					.mask = GENMASK(7, 5),
>  				},
> -				.odr_avl[0] = {  10, 0x01 },
> -				.odr_avl[1] = {  50, 0x02 },
> -				.odr_avl[2] = { 119, 0x03 },
> -				.odr_avl[3] = { 238, 0x04 },
> -				.odr_avl[4] = { 476, 0x05 },
> -				.odr_avl[5] = { 952, 0x06 },
> +				.odr_avl[0] = {  10000, 0x01 },
> +				.odr_avl[1] = {  50000, 0x02 },
> +				.odr_avl[2] = { 119000, 0x03 },
> +				.odr_avl[3] = { 238000, 0x04 },
> +				.odr_avl[4] = { 476000, 0x05 },
> +				.odr_avl[5] = { 952000, 0x06 },
>  				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
> @@ -140,12 +140,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x10,
>  					.mask = GENMASK(7, 5),
>  				},
> -				.odr_avl[0] = {  15, 0x01 },
> -				.odr_avl[1] = {  60, 0x02 },
> -				.odr_avl[2] = { 119, 0x03 },
> -				.odr_avl[3] = { 238, 0x04 },
> -				.odr_avl[4] = { 476, 0x05 },
> -				.odr_avl[5] = { 952, 0x06 },
> +				.odr_avl[0] = {  14900, 0x01 },
> +				.odr_avl[1] = {  59500, 0x02 },
> +				.odr_avl[2] = { 119000, 0x03 },
> +				.odr_avl[3] = { 238000, 0x04 },
> +				.odr_avl[4] = { 476000, 0x05 },
> +				.odr_avl[5] = { 952000, 0x06 },
>  				.odr_len = 6,
>  			},
>  		},
> @@ -229,12 +229,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x10,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
> @@ -242,12 +242,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x11,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  		},
> @@ -395,12 +395,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x10,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
> @@ -408,12 +408,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x11,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  		},
> @@ -570,12 +570,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x10,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
> @@ -583,12 +583,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x11,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  		},
> @@ -747,12 +747,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x10,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
> @@ -760,12 +760,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x11,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  		},
> @@ -944,12 +944,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x10,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
> @@ -957,12 +957,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x11,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  		},
> @@ -1121,12 +1121,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x10,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  			[ST_LSM6DSX_ID_GYRO] = {
> @@ -1134,12 +1134,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
>  					.addr = 0x11,
>  					.mask = GENMASK(7, 4),
>  				},
> -				.odr_avl[0] = {  13, 0x01 },
> -				.odr_avl[1] = {  26, 0x02 },
> -				.odr_avl[2] = {  52, 0x03 },
> -				.odr_avl[3] = { 104, 0x04 },
> -				.odr_avl[4] = { 208, 0x05 },
> -				.odr_avl[5] = { 416, 0x06 },
> +				.odr_avl[0] = {  12500, 0x01 },
> +				.odr_avl[1] = {  26000, 0x02 },
> +				.odr_avl[2] = {  52000, 0x03 },
> +				.odr_avl[3] = { 104000, 0x04 },
> +				.odr_avl[4] = { 208000, 0x05 },
> +				.odr_avl[5] = { 416000, 0x06 },
>  				.odr_len = 6,
>  			},
>  		},
> @@ -1358,7 +1358,7 @@ static int st_lsm6dsx_set_full_scale(struct st_lsm6dsx_sensor *sensor,
>  	return 0;
>  }
>  
> -int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
> +int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val)
>  {
>  	const struct st_lsm6dsx_odr_table_entry *odr_table;
>  	int i;
> @@ -1380,14 +1380,15 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
>  	return odr_table->odr_avl[i].hz;
>  }
>  
> -static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
> -					   enum st_lsm6dsx_sensor_id id)
> +static int
> +st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u32 odr,
> +				enum st_lsm6dsx_sensor_id id)
>  {
>  	struct st_lsm6dsx_sensor *ref = iio_priv(hw->iio_devs[id]);
>  
>  	if (odr > 0) {
>  		if (hw->enable_mask & BIT(id))
> -			return max_t(u16, ref->odr, odr);
> +			return max_t(u32, ref->odr, odr);
>  		else
>  			return odr;
>  	} else {
> @@ -1395,7 +1396,8 @@ static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
>  	}
>  }
>  
> -static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
> +static int
> +st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u32 req_odr)
>  {
>  	struct st_lsm6dsx_sensor *ref_sensor = sensor;
>  	struct st_lsm6dsx_hw *hw = sensor->hw;
> @@ -1409,7 +1411,7 @@ static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
>  	case ST_LSM6DSX_ID_EXT1:
>  	case ST_LSM6DSX_ID_EXT2:
>  	case ST_LSM6DSX_ID_ACC: {
> -		u16 odr;
> +		u32 odr;
>  		int i;
>  
>  		/*
> @@ -1449,7 +1451,7 @@ int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor,
>  				 bool enable)
>  {
>  	struct st_lsm6dsx_hw *hw = sensor->hw;
> -	u16 odr = enable ? sensor->odr : 0;
> +	u32 odr = enable ? sensor->odr : 0;
>  	int err;
>  
>  	err = st_lsm6dsx_set_odr(sensor, odr);
> @@ -1475,7 +1477,7 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor,
>  	if (err < 0)
>  		return err;
>  
> -	delay = 1000000 / sensor->odr;
> +	delay = 1000000000 / sensor->odr;
>  	usleep_range(delay, 2 * delay);
>  
>  	err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data));
> @@ -1507,8 +1509,9 @@ static int st_lsm6dsx_read_raw(struct iio_dev *iio_dev,
>  		iio_device_release_direct_mode(iio_dev);
>  		break;
>  	case IIO_CHAN_INFO_SAMP_FREQ:
> -		*val = sensor->odr;
> -		ret = IIO_VAL_INT;
> +		*val = sensor->odr / 1000;
> +		*val2 = (sensor->odr % 1000) * 1000;
> +		ret = IIO_VAL_INT_PLUS_MICRO;
>  		break;
>  	case IIO_CHAN_INFO_SCALE:
>  		*val = 0;
> @@ -1541,6 +1544,7 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev,
>  	case IIO_CHAN_INFO_SAMP_FREQ: {
>  		u8 data;
>  
> +		val = val * 1000 + val2 / 1000;
>  		val = st_lsm6dsx_check_odr(sensor, val, &data);
>  		if (val < 0)
>  			err = val;
> @@ -1730,8 +1734,9 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,
>  
>  	odr_table = &sensor->hw->settings->odr_table[sensor->id];
>  	for (i = 0; i < odr_table->odr_len; i++)
> -		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
> -				 odr_table->odr_avl[i].hz);
> +		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
> +				 odr_table->odr_avl[i].hz / 1000,
> +				 odr_table->odr_avl[i].hz % 1000);
>  	buf[len - 1] = '\n';
>  
>  	return len;
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> index e029cc05a17f..3a0cb71ce926 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> @@ -51,10 +51,10 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
>  				.addr = 0x60,
>  				.mask = GENMASK(3, 2),
>  			},
> -			.odr_avl[0] = {  10, 0x0 },
> -			.odr_avl[1] = {  20, 0x1 },
> -			.odr_avl[2] = {  50, 0x2 },
> -			.odr_avl[3] = { 100, 0x3 },
> +			.odr_avl[0] = {  10000, 0x0 },
> +			.odr_avl[1] = {  20000, 0x1 },
> +			.odr_avl[2] = {  50000, 0x2 },
> +			.odr_avl[3] = { 100000, 0x3 },
>  			.odr_len = 4,
>  		},
>  		.fs_table = {
> @@ -94,11 +94,11 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
>  static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw)
>  {
>  	struct st_lsm6dsx_sensor *sensor;
> -	u16 odr;
> +	u32 odr;
>  
>  	sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
> -	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 13;
> -	msleep((2000U / odr) + 1);
> +	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 12500;
> +	msleep((2000000U / odr) + 1);
>  }
>  
>  /**
> @@ -318,7 +318,7 @@ st_lsm6dsx_shub_write_with_mask(struct st_lsm6dsx_sensor *sensor,
>  
>  static int
>  st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
> -			    u16 odr, u16 *val)
> +			    u32 odr, u16 *val)
>  {
>  	const struct st_lsm6dsx_ext_dev_settings *settings;
>  	int i;
> @@ -337,7 +337,7 @@ st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
>  }
>  
>  static int
> -st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u16 odr)
> +st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u32 odr)
>  {
>  	const struct st_lsm6dsx_ext_dev_settings *settings;
>  	u16 val;
> @@ -442,7 +442,7 @@ st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor,
>  	if (err < 0)
>  		return err;
>  
> -	delay = 1000000 / sensor->odr;
> +	delay = 1000000000 / sensor->odr;
>  	usleep_range(delay, 2 * delay);
>  
>  	len = min_t(int, sizeof(data), ch->scan_type.realbits >> 3);
> @@ -482,8 +482,9 @@ st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev,
>  		iio_device_release_direct_mode(iio_dev);
>  		break;
>  	case IIO_CHAN_INFO_SAMP_FREQ:
> -		*val = sensor->odr;
> -		ret = IIO_VAL_INT;
> +		*val = sensor->odr / 1000;
> +		*val2 = (sensor->odr % 1000) * 1000;
> +		ret = IIO_VAL_INT_PLUS_MICRO;
>  		break;
>  	case IIO_CHAN_INFO_SCALE:
>  		*val = 0;
> @@ -514,6 +515,7 @@ st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
>  	case IIO_CHAN_INFO_SAMP_FREQ: {
>  		u16 data;
>  
> +		val = val * 1000 + val2 / 1000;
>  		err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data);
>  		if (!err)
>  			sensor->odr = val;
> @@ -540,9 +542,10 @@ st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
>  
>  	settings = sensor->ext_info.settings;
>  	for (i = 0; i < settings->odr_table.odr_len; i++) {
> -		u16 val = settings->odr_table.odr_avl[i].hz;
> +		u32 val = settings->odr_table.odr_avl[i].hz;
>  
> -		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", val);
> +		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
> +				 val / 1000, val % 1000);
>  	}
>  	buf[len - 1] = '\n';
>  

Re: [PATCH v2 2/2] iio: imu: st_lsm6dsx: express odr in mHZ

[Lorenzo Bianconi]

[-- Attachment #1: Type: text/plain, Size: 21189 bytes --]

> On Sun,  3 Nov 2019 20:47:18 +0100
> Lorenzo Bianconi <lorenzo@kernel.org> wrote:
> 
> > Express available frequencies in mHZ in order to support even
> > rational ODRs. This patch is need to fix an Android CTS failure
> > 
> > Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> I've pulled the earlier fix across from the fixes-togreg branch as
> I 'think' I'll get a pull request out before the merge window
> whereas fixes will now be after.
> 
> One thing inline that I'll fix up.
> 
> > ---
> >  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h       |   6 +-
> >  .../iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c    |   9 +-
> >  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c  | 197 +++++++++---------
> >  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c  |  31 +--
> >  4 files changed, 126 insertions(+), 117 deletions(-)
> > 
> > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> > index 9ffc8e06f73d..8ea969e1b72b 100644
> > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> > @@ -106,7 +106,7 @@ struct st_lsm6dsx_sensor;
> >  struct st_lsm6dsx_hw;
> >  
> >  struct st_lsm6dsx_odr {
> > -	u16 hz;
> > +	u32 hz; /* expressed in mHZ */
> Don't call it hz and express in it in milli hz!
> 
> 	u32 milli_hz; will do nicely. + no
> need for comment then...

right :) Do you want to me to send a v3?

Regards,
Lorenzo

> 
> >  	u8 val;
> >  };
> >  
> > @@ -330,7 +330,7 @@ struct st_lsm6dsx_sensor {
> >  	struct st_lsm6dsx_hw *hw;
> >  
> >  	u32 gain;
> > -	u16 odr;
> > +	u32 odr;
> >  
> >  	u16 watermark;
> >  	u8 sip;
> > @@ -415,7 +415,7 @@ int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
> >  			     enum st_lsm6dsx_fifo_mode fifo_mode);
> >  int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw);
> >  int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw);
> > -int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val);
> > +int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val);
> >  int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name);
> >  int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable);
> >  int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable);
> > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> > index 31cd90d2c60e..d416990ae309 100644
> > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> > @@ -91,7 +91,7 @@ static int st_lsm6dsx_get_decimator_val(u8 val)
> >  }
> >  
> >  static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
> > -				       u16 *max_odr, u16 *min_odr)
> > +				       u32 *max_odr, u32 *min_odr)
> >  {
> >  	struct st_lsm6dsx_sensor *sensor;
> >  	int i;
> > @@ -106,16 +106,17 @@ static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
> >  		if (!(hw->enable_mask & BIT(sensor->id)))
> >  			continue;
> >  
> > -		*max_odr = max_t(u16, *max_odr, sensor->odr);
> > -		*min_odr = min_t(u16, *min_odr, sensor->odr);
> > +		*max_odr = max_t(u32, *max_odr, sensor->odr);
> > +		*min_odr = min_t(u32, *min_odr, sensor->odr);
> >  	}
> >  }
> >  
> >  static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw)
> >  {
> > -	u16 max_odr, min_odr, sip = 0, ts_sip = 0;
> >  	const struct st_lsm6dsx_reg *ts_dec_reg;
> >  	struct st_lsm6dsx_sensor *sensor;
> > +	u16 sip = 0, ts_sip = 0;
> > +	u32 max_odr, min_odr;
> >  	int err = 0, i;
> >  	u8 data;
> >  
> > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> > index 2f9396745bc8..03e5cd0cfcba 100644
> > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> > @@ -127,12 +127,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x20,
> >  					.mask = GENMASK(7, 5),
> >  				},
> > -				.odr_avl[0] = {  10, 0x01 },
> > -				.odr_avl[1] = {  50, 0x02 },
> > -				.odr_avl[2] = { 119, 0x03 },
> > -				.odr_avl[3] = { 238, 0x04 },
> > -				.odr_avl[4] = { 476, 0x05 },
> > -				.odr_avl[5] = { 952, 0x06 },
> > +				.odr_avl[0] = {  10000, 0x01 },
> > +				.odr_avl[1] = {  50000, 0x02 },
> > +				.odr_avl[2] = { 119000, 0x03 },
> > +				.odr_avl[3] = { 238000, 0x04 },
> > +				.odr_avl[4] = { 476000, 0x05 },
> > +				.odr_avl[5] = { 952000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  			[ST_LSM6DSX_ID_GYRO] = {
> > @@ -140,12 +140,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x10,
> >  					.mask = GENMASK(7, 5),
> >  				},
> > -				.odr_avl[0] = {  15, 0x01 },
> > -				.odr_avl[1] = {  60, 0x02 },
> > -				.odr_avl[2] = { 119, 0x03 },
> > -				.odr_avl[3] = { 238, 0x04 },
> > -				.odr_avl[4] = { 476, 0x05 },
> > -				.odr_avl[5] = { 952, 0x06 },
> > +				.odr_avl[0] = {  14900, 0x01 },
> > +				.odr_avl[1] = {  59500, 0x02 },
> > +				.odr_avl[2] = { 119000, 0x03 },
> > +				.odr_avl[3] = { 238000, 0x04 },
> > +				.odr_avl[4] = { 476000, 0x05 },
> > +				.odr_avl[5] = { 952000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  		},
> > @@ -229,12 +229,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x10,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  			[ST_LSM6DSX_ID_GYRO] = {
> > @@ -242,12 +242,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x11,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  		},
> > @@ -395,12 +395,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x10,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  			[ST_LSM6DSX_ID_GYRO] = {
> > @@ -408,12 +408,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x11,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  		},
> > @@ -570,12 +570,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x10,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  			[ST_LSM6DSX_ID_GYRO] = {
> > @@ -583,12 +583,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x11,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  		},
> > @@ -747,12 +747,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x10,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  			[ST_LSM6DSX_ID_GYRO] = {
> > @@ -760,12 +760,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x11,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  		},
> > @@ -944,12 +944,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x10,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  			[ST_LSM6DSX_ID_GYRO] = {
> > @@ -957,12 +957,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x11,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  		},
> > @@ -1121,12 +1121,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x10,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  			[ST_LSM6DSX_ID_GYRO] = {
> > @@ -1134,12 +1134,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> >  					.addr = 0x11,
> >  					.mask = GENMASK(7, 4),
> >  				},
> > -				.odr_avl[0] = {  13, 0x01 },
> > -				.odr_avl[1] = {  26, 0x02 },
> > -				.odr_avl[2] = {  52, 0x03 },
> > -				.odr_avl[3] = { 104, 0x04 },
> > -				.odr_avl[4] = { 208, 0x05 },
> > -				.odr_avl[5] = { 416, 0x06 },
> > +				.odr_avl[0] = {  12500, 0x01 },
> > +				.odr_avl[1] = {  26000, 0x02 },
> > +				.odr_avl[2] = {  52000, 0x03 },
> > +				.odr_avl[3] = { 104000, 0x04 },
> > +				.odr_avl[4] = { 208000, 0x05 },
> > +				.odr_avl[5] = { 416000, 0x06 },
> >  				.odr_len = 6,
> >  			},
> >  		},
> > @@ -1358,7 +1358,7 @@ static int st_lsm6dsx_set_full_scale(struct st_lsm6dsx_sensor *sensor,
> >  	return 0;
> >  }
> >  
> > -int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
> > +int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val)
> >  {
> >  	const struct st_lsm6dsx_odr_table_entry *odr_table;
> >  	int i;
> > @@ -1380,14 +1380,15 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
> >  	return odr_table->odr_avl[i].hz;
> >  }
> >  
> > -static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
> > -					   enum st_lsm6dsx_sensor_id id)
> > +static int
> > +st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u32 odr,
> > +				enum st_lsm6dsx_sensor_id id)
> >  {
> >  	struct st_lsm6dsx_sensor *ref = iio_priv(hw->iio_devs[id]);
> >  
> >  	if (odr > 0) {
> >  		if (hw->enable_mask & BIT(id))
> > -			return max_t(u16, ref->odr, odr);
> > +			return max_t(u32, ref->odr, odr);
> >  		else
> >  			return odr;
> >  	} else {
> > @@ -1395,7 +1396,8 @@ static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
> >  	}
> >  }
> >  
> > -static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
> > +static int
> > +st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u32 req_odr)
> >  {
> >  	struct st_lsm6dsx_sensor *ref_sensor = sensor;
> >  	struct st_lsm6dsx_hw *hw = sensor->hw;
> > @@ -1409,7 +1411,7 @@ static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
> >  	case ST_LSM6DSX_ID_EXT1:
> >  	case ST_LSM6DSX_ID_EXT2:
> >  	case ST_LSM6DSX_ID_ACC: {
> > -		u16 odr;
> > +		u32 odr;
> >  		int i;
> >  
> >  		/*
> > @@ -1449,7 +1451,7 @@ int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor,
> >  				 bool enable)
> >  {
> >  	struct st_lsm6dsx_hw *hw = sensor->hw;
> > -	u16 odr = enable ? sensor->odr : 0;
> > +	u32 odr = enable ? sensor->odr : 0;
> >  	int err;
> >  
> >  	err = st_lsm6dsx_set_odr(sensor, odr);
> > @@ -1475,7 +1477,7 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor,
> >  	if (err < 0)
> >  		return err;
> >  
> > -	delay = 1000000 / sensor->odr;
> > +	delay = 1000000000 / sensor->odr;
> >  	usleep_range(delay, 2 * delay);
> >  
> >  	err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data));
> > @@ -1507,8 +1509,9 @@ static int st_lsm6dsx_read_raw(struct iio_dev *iio_dev,
> >  		iio_device_release_direct_mode(iio_dev);
> >  		break;
> >  	case IIO_CHAN_INFO_SAMP_FREQ:
> > -		*val = sensor->odr;
> > -		ret = IIO_VAL_INT;
> > +		*val = sensor->odr / 1000;
> > +		*val2 = (sensor->odr % 1000) * 1000;
> > +		ret = IIO_VAL_INT_PLUS_MICRO;
> >  		break;
> >  	case IIO_CHAN_INFO_SCALE:
> >  		*val = 0;
> > @@ -1541,6 +1544,7 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev,
> >  	case IIO_CHAN_INFO_SAMP_FREQ: {
> >  		u8 data;
> >  
> > +		val = val * 1000 + val2 / 1000;
> >  		val = st_lsm6dsx_check_odr(sensor, val, &data);
> >  		if (val < 0)
> >  			err = val;
> > @@ -1730,8 +1734,9 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,
> >  
> >  	odr_table = &sensor->hw->settings->odr_table[sensor->id];
> >  	for (i = 0; i < odr_table->odr_len; i++)
> > -		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
> > -				 odr_table->odr_avl[i].hz);
> > +		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
> > +				 odr_table->odr_avl[i].hz / 1000,
> > +				 odr_table->odr_avl[i].hz % 1000);
> >  	buf[len - 1] = '\n';
> >  
> >  	return len;
> > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> > index e029cc05a17f..3a0cb71ce926 100644
> > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> > @@ -51,10 +51,10 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
> >  				.addr = 0x60,
> >  				.mask = GENMASK(3, 2),
> >  			},
> > -			.odr_avl[0] = {  10, 0x0 },
> > -			.odr_avl[1] = {  20, 0x1 },
> > -			.odr_avl[2] = {  50, 0x2 },
> > -			.odr_avl[3] = { 100, 0x3 },
> > +			.odr_avl[0] = {  10000, 0x0 },
> > +			.odr_avl[1] = {  20000, 0x1 },
> > +			.odr_avl[2] = {  50000, 0x2 },
> > +			.odr_avl[3] = { 100000, 0x3 },
> >  			.odr_len = 4,
> >  		},
> >  		.fs_table = {
> > @@ -94,11 +94,11 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
> >  static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw)
> >  {
> >  	struct st_lsm6dsx_sensor *sensor;
> > -	u16 odr;
> > +	u32 odr;
> >  
> >  	sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
> > -	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 13;
> > -	msleep((2000U / odr) + 1);
> > +	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 12500;
> > +	msleep((2000000U / odr) + 1);
> >  }
> >  
> >  /**
> > @@ -318,7 +318,7 @@ st_lsm6dsx_shub_write_with_mask(struct st_lsm6dsx_sensor *sensor,
> >  
> >  static int
> >  st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
> > -			    u16 odr, u16 *val)
> > +			    u32 odr, u16 *val)
> >  {
> >  	const struct st_lsm6dsx_ext_dev_settings *settings;
> >  	int i;
> > @@ -337,7 +337,7 @@ st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
> >  }
> >  
> >  static int
> > -st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u16 odr)
> > +st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u32 odr)
> >  {
> >  	const struct st_lsm6dsx_ext_dev_settings *settings;
> >  	u16 val;
> > @@ -442,7 +442,7 @@ st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor,
> >  	if (err < 0)
> >  		return err;
> >  
> > -	delay = 1000000 / sensor->odr;
> > +	delay = 1000000000 / sensor->odr;
> >  	usleep_range(delay, 2 * delay);
> >  
> >  	len = min_t(int, sizeof(data), ch->scan_type.realbits >> 3);
> > @@ -482,8 +482,9 @@ st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev,
> >  		iio_device_release_direct_mode(iio_dev);
> >  		break;
> >  	case IIO_CHAN_INFO_SAMP_FREQ:
> > -		*val = sensor->odr;
> > -		ret = IIO_VAL_INT;
> > +		*val = sensor->odr / 1000;
> > +		*val2 = (sensor->odr % 1000) * 1000;
> > +		ret = IIO_VAL_INT_PLUS_MICRO;
> >  		break;
> >  	case IIO_CHAN_INFO_SCALE:
> >  		*val = 0;
> > @@ -514,6 +515,7 @@ st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
> >  	case IIO_CHAN_INFO_SAMP_FREQ: {
> >  		u16 data;
> >  
> > +		val = val * 1000 + val2 / 1000;
> >  		err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data);
> >  		if (!err)
> >  			sensor->odr = val;
> > @@ -540,9 +542,10 @@ st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
> >  
> >  	settings = sensor->ext_info.settings;
> >  	for (i = 0; i < settings->odr_table.odr_len; i++) {
> > -		u16 val = settings->odr_table.odr_avl[i].hz;
> > +		u32 val = settings->odr_table.odr_avl[i].hz;
> >  
> > -		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", val);
> > +		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
> > +				 val / 1000, val % 1000);
> >  	}
> >  	buf[len - 1] = '\n';
> >  
> 

[-- Attachment #2: signature.asc --]
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Re: [PATCH v2 2/2] iio: imu: st_lsm6dsx: express odr in mHZ

[Jonathan Cameron]

On Sun, 10 Nov 2019 11:27:49 +0200
Lorenzo Bianconi <lorenzo@kernel.org> wrote:

> > On Sun,  3 Nov 2019 20:47:18 +0100
> > Lorenzo Bianconi <lorenzo@kernel.org> wrote:
> >   
> > > Express available frequencies in mHZ in order to support even
> > > rational ODRs. This patch is need to fix an Android CTS failure
> > > 
> > > Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>  
> > I've pulled the earlier fix across from the fixes-togreg branch as
> > I 'think' I'll get a pull request out before the merge window
> > whereas fixes will now be after.
> > 
> > One thing inline that I'll fix up.
> >   
> > > ---
> > >  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h       |   6 +-
> > >  .../iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c    |   9 +-
> > >  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c  | 197 +++++++++---------
> > >  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c  |  31 +--
> > >  4 files changed, 126 insertions(+), 117 deletions(-)
> > > 
> > > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> > > index 9ffc8e06f73d..8ea969e1b72b 100644
> > > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> > > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> > > @@ -106,7 +106,7 @@ struct st_lsm6dsx_sensor;
> > >  struct st_lsm6dsx_hw;
> > >  
> > >  struct st_lsm6dsx_odr {
> > > -	u16 hz;
> > > +	u32 hz; /* expressed in mHZ */  
> > Don't call it hz and express in it in milli hz!
> > 
> > 	u32 milli_hz; will do nicely. + no
> > need for comment then...  
> 
> right :) Do you want to me to send a v3?
> 
No need. I made the change whilst applying (the forgot to say
that in the email :)

Applied to the togreg branch of iio.git after which my internet
connection tell over so only just pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> Regards,
> Lorenzo
> 
> >   
> > >  	u8 val;
> > >  };
> > >  
> > > @@ -330,7 +330,7 @@ struct st_lsm6dsx_sensor {
> > >  	struct st_lsm6dsx_hw *hw;
> > >  
> > >  	u32 gain;
> > > -	u16 odr;
> > > +	u32 odr;
> > >  
> > >  	u16 watermark;
> > >  	u8 sip;
> > > @@ -415,7 +415,7 @@ int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
> > >  			     enum st_lsm6dsx_fifo_mode fifo_mode);
> > >  int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw);
> > >  int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw);
> > > -int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val);
> > > +int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val);
> > >  int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name);
> > >  int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable);
> > >  int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable);
> > > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> > > index 31cd90d2c60e..d416990ae309 100644
> > > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> > > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
> > > @@ -91,7 +91,7 @@ static int st_lsm6dsx_get_decimator_val(u8 val)
> > >  }
> > >  
> > >  static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
> > > -				       u16 *max_odr, u16 *min_odr)
> > > +				       u32 *max_odr, u32 *min_odr)
> > >  {
> > >  	struct st_lsm6dsx_sensor *sensor;
> > >  	int i;
> > > @@ -106,16 +106,17 @@ static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw,
> > >  		if (!(hw->enable_mask & BIT(sensor->id)))
> > >  			continue;
> > >  
> > > -		*max_odr = max_t(u16, *max_odr, sensor->odr);
> > > -		*min_odr = min_t(u16, *min_odr, sensor->odr);
> > > +		*max_odr = max_t(u32, *max_odr, sensor->odr);
> > > +		*min_odr = min_t(u32, *min_odr, sensor->odr);
> > >  	}
> > >  }
> > >  
> > >  static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw)
> > >  {
> > > -	u16 max_odr, min_odr, sip = 0, ts_sip = 0;
> > >  	const struct st_lsm6dsx_reg *ts_dec_reg;
> > >  	struct st_lsm6dsx_sensor *sensor;
> > > +	u16 sip = 0, ts_sip = 0;
> > > +	u32 max_odr, min_odr;
> > >  	int err = 0, i;
> > >  	u8 data;
> > >  
> > > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> > > index 2f9396745bc8..03e5cd0cfcba 100644
> > > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> > > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> > > @@ -127,12 +127,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x20,
> > >  					.mask = GENMASK(7, 5),
> > >  				},
> > > -				.odr_avl[0] = {  10, 0x01 },
> > > -				.odr_avl[1] = {  50, 0x02 },
> > > -				.odr_avl[2] = { 119, 0x03 },
> > > -				.odr_avl[3] = { 238, 0x04 },
> > > -				.odr_avl[4] = { 476, 0x05 },
> > > -				.odr_avl[5] = { 952, 0x06 },
> > > +				.odr_avl[0] = {  10000, 0x01 },
> > > +				.odr_avl[1] = {  50000, 0x02 },
> > > +				.odr_avl[2] = { 119000, 0x03 },
> > > +				.odr_avl[3] = { 238000, 0x04 },
> > > +				.odr_avl[4] = { 476000, 0x05 },
> > > +				.odr_avl[5] = { 952000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  			[ST_LSM6DSX_ID_GYRO] = {
> > > @@ -140,12 +140,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x10,
> > >  					.mask = GENMASK(7, 5),
> > >  				},
> > > -				.odr_avl[0] = {  15, 0x01 },
> > > -				.odr_avl[1] = {  60, 0x02 },
> > > -				.odr_avl[2] = { 119, 0x03 },
> > > -				.odr_avl[3] = { 238, 0x04 },
> > > -				.odr_avl[4] = { 476, 0x05 },
> > > -				.odr_avl[5] = { 952, 0x06 },
> > > +				.odr_avl[0] = {  14900, 0x01 },
> > > +				.odr_avl[1] = {  59500, 0x02 },
> > > +				.odr_avl[2] = { 119000, 0x03 },
> > > +				.odr_avl[3] = { 238000, 0x04 },
> > > +				.odr_avl[4] = { 476000, 0x05 },
> > > +				.odr_avl[5] = { 952000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  		},
> > > @@ -229,12 +229,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x10,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  			[ST_LSM6DSX_ID_GYRO] = {
> > > @@ -242,12 +242,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x11,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  		},
> > > @@ -395,12 +395,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x10,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  			[ST_LSM6DSX_ID_GYRO] = {
> > > @@ -408,12 +408,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x11,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  		},
> > > @@ -570,12 +570,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x10,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  			[ST_LSM6DSX_ID_GYRO] = {
> > > @@ -583,12 +583,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x11,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  		},
> > > @@ -747,12 +747,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x10,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  			[ST_LSM6DSX_ID_GYRO] = {
> > > @@ -760,12 +760,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x11,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  		},
> > > @@ -944,12 +944,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x10,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  			[ST_LSM6DSX_ID_GYRO] = {
> > > @@ -957,12 +957,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x11,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  		},
> > > @@ -1121,12 +1121,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x10,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  			[ST_LSM6DSX_ID_GYRO] = {
> > > @@ -1134,12 +1134,12 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> > >  					.addr = 0x11,
> > >  					.mask = GENMASK(7, 4),
> > >  				},
> > > -				.odr_avl[0] = {  13, 0x01 },
> > > -				.odr_avl[1] = {  26, 0x02 },
> > > -				.odr_avl[2] = {  52, 0x03 },
> > > -				.odr_avl[3] = { 104, 0x04 },
> > > -				.odr_avl[4] = { 208, 0x05 },
> > > -				.odr_avl[5] = { 416, 0x06 },
> > > +				.odr_avl[0] = {  12500, 0x01 },
> > > +				.odr_avl[1] = {  26000, 0x02 },
> > > +				.odr_avl[2] = {  52000, 0x03 },
> > > +				.odr_avl[3] = { 104000, 0x04 },
> > > +				.odr_avl[4] = { 208000, 0x05 },
> > > +				.odr_avl[5] = { 416000, 0x06 },
> > >  				.odr_len = 6,
> > >  			},
> > >  		},
> > > @@ -1358,7 +1358,7 @@ static int st_lsm6dsx_set_full_scale(struct st_lsm6dsx_sensor *sensor,
> > >  	return 0;
> > >  }
> > >  
> > > -int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
> > > +int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val)
> > >  {
> > >  	const struct st_lsm6dsx_odr_table_entry *odr_table;
> > >  	int i;
> > > @@ -1380,14 +1380,15 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val)
> > >  	return odr_table->odr_avl[i].hz;
> > >  }
> > >  
> > > -static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
> > > -					   enum st_lsm6dsx_sensor_id id)
> > > +static int
> > > +st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u32 odr,
> > > +				enum st_lsm6dsx_sensor_id id)
> > >  {
> > >  	struct st_lsm6dsx_sensor *ref = iio_priv(hw->iio_devs[id]);
> > >  
> > >  	if (odr > 0) {
> > >  		if (hw->enable_mask & BIT(id))
> > > -			return max_t(u16, ref->odr, odr);
> > > +			return max_t(u32, ref->odr, odr);
> > >  		else
> > >  			return odr;
> > >  	} else {
> > > @@ -1395,7 +1396,8 @@ static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr,
> > >  	}
> > >  }
> > >  
> > > -static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
> > > +static int
> > > +st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u32 req_odr)
> > >  {
> > >  	struct st_lsm6dsx_sensor *ref_sensor = sensor;
> > >  	struct st_lsm6dsx_hw *hw = sensor->hw;
> > > @@ -1409,7 +1411,7 @@ static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr)
> > >  	case ST_LSM6DSX_ID_EXT1:
> > >  	case ST_LSM6DSX_ID_EXT2:
> > >  	case ST_LSM6DSX_ID_ACC: {
> > > -		u16 odr;
> > > +		u32 odr;
> > >  		int i;
> > >  
> > >  		/*
> > > @@ -1449,7 +1451,7 @@ int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor,
> > >  				 bool enable)
> > >  {
> > >  	struct st_lsm6dsx_hw *hw = sensor->hw;
> > > -	u16 odr = enable ? sensor->odr : 0;
> > > +	u32 odr = enable ? sensor->odr : 0;
> > >  	int err;
> > >  
> > >  	err = st_lsm6dsx_set_odr(sensor, odr);
> > > @@ -1475,7 +1477,7 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor,
> > >  	if (err < 0)
> > >  		return err;
> > >  
> > > -	delay = 1000000 / sensor->odr;
> > > +	delay = 1000000000 / sensor->odr;
> > >  	usleep_range(delay, 2 * delay);
> > >  
> > >  	err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data));
> > > @@ -1507,8 +1509,9 @@ static int st_lsm6dsx_read_raw(struct iio_dev *iio_dev,
> > >  		iio_device_release_direct_mode(iio_dev);
> > >  		break;
> > >  	case IIO_CHAN_INFO_SAMP_FREQ:
> > > -		*val = sensor->odr;
> > > -		ret = IIO_VAL_INT;
> > > +		*val = sensor->odr / 1000;
> > > +		*val2 = (sensor->odr % 1000) * 1000;
> > > +		ret = IIO_VAL_INT_PLUS_MICRO;
> > >  		break;
> > >  	case IIO_CHAN_INFO_SCALE:
> > >  		*val = 0;
> > > @@ -1541,6 +1544,7 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev,
> > >  	case IIO_CHAN_INFO_SAMP_FREQ: {
> > >  		u8 data;
> > >  
> > > +		val = val * 1000 + val2 / 1000;
> > >  		val = st_lsm6dsx_check_odr(sensor, val, &data);
> > >  		if (val < 0)
> > >  			err = val;
> > > @@ -1730,8 +1734,9 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,
> > >  
> > >  	odr_table = &sensor->hw->settings->odr_table[sensor->id];
> > >  	for (i = 0; i < odr_table->odr_len; i++)
> > > -		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
> > > -				 odr_table->odr_avl[i].hz);
> > > +		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
> > > +				 odr_table->odr_avl[i].hz / 1000,
> > > +				 odr_table->odr_avl[i].hz % 1000);
> > >  	buf[len - 1] = '\n';
> > >  
> > >  	return len;
> > > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> > > index e029cc05a17f..3a0cb71ce926 100644
> > > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> > > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
> > > @@ -51,10 +51,10 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
> > >  				.addr = 0x60,
> > >  				.mask = GENMASK(3, 2),
> > >  			},
> > > -			.odr_avl[0] = {  10, 0x0 },
> > > -			.odr_avl[1] = {  20, 0x1 },
> > > -			.odr_avl[2] = {  50, 0x2 },
> > > -			.odr_avl[3] = { 100, 0x3 },
> > > +			.odr_avl[0] = {  10000, 0x0 },
> > > +			.odr_avl[1] = {  20000, 0x1 },
> > > +			.odr_avl[2] = {  50000, 0x2 },
> > > +			.odr_avl[3] = { 100000, 0x3 },
> > >  			.odr_len = 4,
> > >  		},
> > >  		.fs_table = {
> > > @@ -94,11 +94,11 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
> > >  static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw)
> > >  {
> > >  	struct st_lsm6dsx_sensor *sensor;
> > > -	u16 odr;
> > > +	u32 odr;
> > >  
> > >  	sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
> > > -	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 13;
> > > -	msleep((2000U / odr) + 1);
> > > +	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 12500;
> > > +	msleep((2000000U / odr) + 1);
> > >  }
> > >  
> > >  /**
> > > @@ -318,7 +318,7 @@ st_lsm6dsx_shub_write_with_mask(struct st_lsm6dsx_sensor *sensor,
> > >  
> > >  static int
> > >  st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
> > > -			    u16 odr, u16 *val)
> > > +			    u32 odr, u16 *val)
> > >  {
> > >  	const struct st_lsm6dsx_ext_dev_settings *settings;
> > >  	int i;
> > > @@ -337,7 +337,7 @@ st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
> > >  }
> > >  
> > >  static int
> > > -st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u16 odr)
> > > +st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u32 odr)
> > >  {
> > >  	const struct st_lsm6dsx_ext_dev_settings *settings;
> > >  	u16 val;
> > > @@ -442,7 +442,7 @@ st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor,
> > >  	if (err < 0)
> > >  		return err;
> > >  
> > > -	delay = 1000000 / sensor->odr;
> > > +	delay = 1000000000 / sensor->odr;
> > >  	usleep_range(delay, 2 * delay);
> > >  
> > >  	len = min_t(int, sizeof(data), ch->scan_type.realbits >> 3);
> > > @@ -482,8 +482,9 @@ st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev,
> > >  		iio_device_release_direct_mode(iio_dev);
> > >  		break;
> > >  	case IIO_CHAN_INFO_SAMP_FREQ:
> > > -		*val = sensor->odr;
> > > -		ret = IIO_VAL_INT;
> > > +		*val = sensor->odr / 1000;
> > > +		*val2 = (sensor->odr % 1000) * 1000;
> > > +		ret = IIO_VAL_INT_PLUS_MICRO;
> > >  		break;
> > >  	case IIO_CHAN_INFO_SCALE:
> > >  		*val = 0;
> > > @@ -514,6 +515,7 @@ st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
> > >  	case IIO_CHAN_INFO_SAMP_FREQ: {
> > >  		u16 data;
> > >  
> > > +		val = val * 1000 + val2 / 1000;
> > >  		err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data);
> > >  		if (!err)
> > >  			sensor->odr = val;
> > > @@ -540,9 +542,10 @@ st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
> > >  
> > >  	settings = sensor->ext_info.settings;
> > >  	for (i = 0; i < settings->odr_table.odr_len; i++) {
> > > -		u16 val = settings->odr_table.odr_avl[i].hz;
> > > +		u32 val = settings->odr_table.odr_avl[i].hz;
> > >  
> > > -		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", val);
> > > +		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
> > > +				 val / 1000, val % 1000);
> > >  	}
> > >  	buf[len - 1] = '\n';
> > >    
> >