From: Jonathan Cameron <jic23@kernel.org>
To: Lorenzo Bianconi <lorenzo@kernel.org>
Cc: lorenzo.bianconi@redhat.com, linux-iio@vger.kernel.org
Subject: Re: [PATCH 2/2] iio: imu: st_lsm6dsx: express odr in HZ / 10
Date: Sun, 3 Nov 2019 10:13:02 +0000 [thread overview]
Message-ID: <20191103101302.59356d9e@archlinux> (raw)
In-Reply-To: <3d1ffc5fd083dcbd007872e5e8f5261faac69503.1572203759.git.lorenzo@kernel.org>
On Sun, 27 Oct 2019 20:21:24 +0100
Lorenzo Bianconi <lorenzo@kernel.org> wrote:
> Express available frequencies in HZ / 10 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 | 2 +-
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 181 ++++++++++---------
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 23 ++-
> 3 files changed, 106 insertions(+), 100 deletions(-)
>
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> index 9ffc8e06f73d..b32c6389f47b 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;
> + u16 hz; /* expressed in HZ / 10 */
That is in the non obvious category. Maybe best bet
is to switch to millihz and make the type bigger if needed?
Thanks,
Jonathan
> u8 val;
> };
>
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index 2f9396745bc8..63e113725499 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] = { 100, 0x01 },
> + .odr_avl[1] = { 500, 0x02 },
> + .odr_avl[2] = { 1190, 0x03 },
> + .odr_avl[3] = { 2380, 0x04 },
> + .odr_avl[4] = { 4760, 0x05 },
> + .odr_avl[5] = { 9520, 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] = { 149, 0x01 },
> + .odr_avl[1] = { 595, 0x02 },
> + .odr_avl[2] = { 1190, 0x03 },
> + .odr_avl[3] = { 2380, 0x04 },
> + .odr_avl[4] = { 4760, 0x05 },
> + .odr_avl[5] = { 9520, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 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] = { 125, 0x01 },
> + .odr_avl[1] = { 260, 0x02 },
> + .odr_avl[2] = { 520, 0x03 },
> + .odr_avl[3] = { 1040, 0x04 },
> + .odr_avl[4] = { 2080, 0x05 },
> + .odr_avl[5] = { 4160, 0x06 },
> .odr_len = 6,
> },
> },
> @@ -1475,7 +1475,7 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor,
> if (err < 0)
> return err;
>
> - delay = 1000000 / sensor->odr;
> + delay = 10000000 / sensor->odr;
> usleep_range(delay, 2 * delay);
>
> err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data));
> @@ -1507,8 +1507,9 @@ 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 / 10;
> + *val2 = (sensor->odr % 10) * 100000;
> + ret = IIO_VAL_INT_PLUS_MICRO;
> break;
> case IIO_CHAN_INFO_SCALE:
> *val = 0;
> @@ -1541,6 +1542,7 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev,
> case IIO_CHAN_INFO_SAMP_FREQ: {
> u8 data;
>
> + val = val * 10 + val2 / 100000;
> val = st_lsm6dsx_check_odr(sensor, val, &data);
> if (val < 0)
> err = val;
> @@ -1730,8 +1732,9 @@ 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.%d ",
> + odr_table->odr_avl[i].hz / 10,
> + odr_table->odr_avl[i].hz % 10);
> 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..c3b124a73815 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] = { 100, 0x0 },
> + .odr_avl[1] = { 200, 0x1 },
> + .odr_avl[2] = { 500, 0x2 },
> + .odr_avl[3] = { 1000, 0x3 },
> .odr_len = 4,
> },
> .fs_table = {
> @@ -97,8 +97,8 @@ static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw)
> u16 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 : 125;
> + msleep((20000U / odr) + 1);
> }
>
> /**
> @@ -442,7 +442,7 @@ st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor,
> if (err < 0)
> return err;
>
> - delay = 1000000 / sensor->odr;
> + delay = 10000000 / 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 / 10;
> + *val2 = (sensor->odr % 10) * 100000;
> + 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 * 10 + val2 / 100000;
> err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data);
> if (!err)
> sensor->odr = val;
> @@ -542,7 +544,8 @@ st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
> for (i = 0; i < settings->odr_table.odr_len; i++) {
> u16 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.%d ",
> + val / 10, val % 10);
> }
> buf[len - 1] = '\n';
>
next prev parent reply other threads:[~2019-11-03 10:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-27 19:21 [PATCH 0/2] support rational ODRs in st_lsm6dsx Lorenzo Bianconi
2019-10-27 19:21 ` [PATCH 1/2] iio: imu: st_lsm6dsx: explicitly define odr table size Lorenzo Bianconi
2019-10-27 19:21 ` [PATCH 2/2] iio: imu: st_lsm6dsx: express odr in HZ / 10 Lorenzo Bianconi
2019-11-03 10:13 ` Jonathan Cameron [this message]
2019-11-03 13:06 ` Lorenzo Bianconi
2019-10-31 14:43 ` [PATCH 0/2] support rational ODRs in st_lsm6dsx Mario TESI
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