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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/iio/common/ssp_sensors/ssp_iio_sensor.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/iio/common/ssp_sensors/ssp_iio_sensor.h')
-rw-r--r-- | drivers/iio/common/ssp_sensors/ssp_iio_sensor.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/iio/common/ssp_sensors/ssp_iio_sensor.h b/drivers/iio/common/ssp_sensors/ssp_iio_sensor.h new file mode 100644 index 000000000..4528ab55e --- /dev/null +++ b/drivers/iio/common/ssp_sensors/ssp_iio_sensor.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __SSP_IIO_SENSOR_H__ +#define __SSP_IIO_SENSOR_H__ + +#define SSP_CHANNEL_AG(_type, _mod, _index) \ +{ \ + .type = _type,\ + .modified = 1,\ + .channel2 = _mod,\ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ),\ + .scan_index = _index,\ + .scan_type = {\ + .sign = 's',\ + .realbits = 16,\ + .storagebits = 16,\ + .shift = 0,\ + .endianness = IIO_LE,\ + },\ +} + +/* It is defined here as it is a mixed timestamp */ +#define SSP_CHAN_TIMESTAMP(_si) { \ + .type = IIO_TIMESTAMP, \ + .channel = -1, \ + .scan_index = _si, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 64, \ + .storagebits = 64, \ + }, \ +} + +#define SSP_MS_PER_S 1000 +#define SSP_INVERTED_SCALING_FACTOR 1000000U + +#define SSP_FACTOR_WITH_MS \ + (SSP_INVERTED_SCALING_FACTOR * SSP_MS_PER_S) + +int ssp_common_buffer_postenable(struct iio_dev *indio_dev); + +int ssp_common_buffer_postdisable(struct iio_dev *indio_dev); + +int ssp_common_process_data(struct iio_dev *indio_dev, void *buf, + unsigned int len, int64_t timestamp); + +/* Converts time in ms to frequency */ +static inline void ssp_convert_to_freq(u32 time, int *integer_part, + int *fractional) +{ + if (time == 0) { + *fractional = 0; + *integer_part = 0; + return; + } + + *integer_part = SSP_FACTOR_WITH_MS / time; + *fractional = *integer_part % SSP_INVERTED_SCALING_FACTOR; + *integer_part = *integer_part / SSP_INVERTED_SCALING_FACTOR; +} + +/* Converts frequency to time in ms */ +static inline int ssp_convert_to_time(int integer_part, int fractional) +{ + u64 value; + + value = (u64)integer_part * SSP_INVERTED_SCALING_FACTOR + fractional; + if (value == 0) + return 0; + + return div64_u64((u64)SSP_FACTOR_WITH_MS, value); +} +#endif /* __SSP_IIO_SENSOR_H__ */ |