Lines Matching full:fifo
20 /* FIFO header: 1 byte */
52 /* FIFO empty */ in inv_icm42600_fifo_decode_packet()
105 if (st->fifo.en & INV_ICM42600_SENSOR_GYRO) in inv_icm42600_buffer_update_fifo_period()
110 if (st->fifo.en & INV_ICM42600_SENSOR_ACCEL) in inv_icm42600_buffer_update_fifo_period()
120 st->fifo.period = period; in inv_icm42600_buffer_update_fifo_period()
129 /* update only FIFO EN bits */ in inv_icm42600_buffer_set_fifo_en()
147 st->fifo.en = fifo_en; in inv_icm42600_buffer_set_fifo_en()
182 * inv_icm42600_buffer_update_watermark - update watermark FIFO threshold
187 * FIFO watermark threshold is computed based on the required watermark values
200 * to the FIFO frequency. Beware that this is only true because we are not
213 packet_size = inv_icm42600_get_packet_size(st->fifo.en); in inv_icm42600_buffer_update_watermark()
216 wm_gyro = inv_icm42600_wm_truncate(st->fifo.watermark.gyro, packet_size); in inv_icm42600_buffer_update_watermark()
217 wm_accel = inv_icm42600_wm_truncate(st->fifo.watermark.accel, packet_size); in inv_icm42600_buffer_update_watermark()
249 /* changing FIFO watermark requires to turn off watermark interrupt */ in inv_icm42600_buffer_update_watermark()
291 * update_scan_mode callback is turning sensors on and setting data FIFO enable
301 /* exit if FIFO is already on */ in inv_icm42600_buffer_postenable()
302 if (st->fifo.on) { in inv_icm42600_buffer_postenable()
307 /* set FIFO threshold interrupt */ in inv_icm42600_buffer_postenable()
314 /* flush FIFO data */ in inv_icm42600_buffer_postenable()
320 /* set FIFO in streaming mode */ in inv_icm42600_buffer_postenable()
326 /* workaround: first read of FIFO count after reset is always 0 */ in inv_icm42600_buffer_postenable()
332 /* increase FIFO on counter */ in inv_icm42600_buffer_postenable()
333 st->fifo.on++; in inv_icm42600_buffer_postenable()
346 /* exit if there are several sensors using the FIFO */ in inv_icm42600_buffer_predisable()
347 if (st->fifo.on > 1) { in inv_icm42600_buffer_predisable()
352 /* set FIFO in bypass mode */ in inv_icm42600_buffer_predisable()
358 /* flush FIFO data */ in inv_icm42600_buffer_predisable()
364 /* disable FIFO threshold interrupt */ in inv_icm42600_buffer_predisable()
371 /* decrease FIFO on counter */ in inv_icm42600_buffer_predisable()
372 st->fifo.on--; in inv_icm42600_buffer_predisable()
392 watermark = &st->fifo.watermark.gyro; in inv_icm42600_buffer_postdisable()
395 watermark = &st->fifo.watermark.accel; in inv_icm42600_buffer_postdisable()
402 ret = inv_icm42600_buffer_set_fifo_en(st, st->fifo.en & ~sensor); in inv_icm42600_buffer_postdisable()
419 /* if FIFO is off, turn temperature off */ in inv_icm42600_buffer_postdisable()
420 if (!st->fifo.on) in inv_icm42600_buffer_postdisable()
456 st->fifo.count = 0; in inv_icm42600_buffer_fifo_read()
457 st->fifo.nb.gyro = 0; in inv_icm42600_buffer_fifo_read()
458 st->fifo.nb.accel = 0; in inv_icm42600_buffer_fifo_read()
459 st->fifo.nb.total = 0; in inv_icm42600_buffer_fifo_read()
461 /* compute maximum FIFO read size */ in inv_icm42600_buffer_fifo_read()
463 max_count = sizeof(st->fifo.data); in inv_icm42600_buffer_fifo_read()
465 max_count = max * inv_icm42600_get_packet_size(st->fifo.en); in inv_icm42600_buffer_fifo_read()
467 /* read FIFO count value */ in inv_icm42600_buffer_fifo_read()
473 st->fifo.count = be16_to_cpup(raw_fifo_count); in inv_icm42600_buffer_fifo_read()
475 /* check and clamp FIFO count value */ in inv_icm42600_buffer_fifo_read()
476 if (st->fifo.count == 0) in inv_icm42600_buffer_fifo_read()
478 if (st->fifo.count > max_count) in inv_icm42600_buffer_fifo_read()
479 st->fifo.count = max_count; in inv_icm42600_buffer_fifo_read()
481 /* read all FIFO data in internal buffer */ in inv_icm42600_buffer_fifo_read()
483 st->fifo.data, st->fifo.count); in inv_icm42600_buffer_fifo_read()
488 for (i = 0; i < st->fifo.count; i += size) { in inv_icm42600_buffer_fifo_read()
489 size = inv_icm42600_fifo_decode_packet(&st->fifo.data[i], in inv_icm42600_buffer_fifo_read()
494 st->fifo.nb.gyro++; in inv_icm42600_buffer_fifo_read()
496 st->fifo.nb.accel++; in inv_icm42600_buffer_fifo_read()
497 st->fifo.nb.total++; in inv_icm42600_buffer_fifo_read()
508 if (st->fifo.nb.total == 0) in inv_icm42600_buffer_fifo_parse()
511 /* handle gyroscope timestamp and FIFO data parsing */ in inv_icm42600_buffer_fifo_parse()
513 inv_sensors_timestamp_interrupt(ts, st->fifo.period, st->fifo.nb.total, in inv_icm42600_buffer_fifo_parse()
514 st->fifo.nb.gyro, st->timestamp.gyro); in inv_icm42600_buffer_fifo_parse()
515 if (st->fifo.nb.gyro > 0) { in inv_icm42600_buffer_fifo_parse()
521 /* handle accelerometer timestamp and FIFO data parsing */ in inv_icm42600_buffer_fifo_parse()
523 inv_sensors_timestamp_interrupt(ts, st->fifo.period, st->fifo.nb.total, in inv_icm42600_buffer_fifo_parse()
524 st->fifo.nb.accel, st->timestamp.accel); in inv_icm42600_buffer_fifo_parse()
525 if (st->fifo.nb.accel > 0) { in inv_icm42600_buffer_fifo_parse()
548 if (st->fifo.nb.total == 0) in inv_icm42600_buffer_hwfifo_flush()
551 if (st->fifo.nb.gyro > 0) { in inv_icm42600_buffer_hwfifo_flush()
553 inv_sensors_timestamp_interrupt(ts, st->fifo.period, in inv_icm42600_buffer_hwfifo_flush()
554 st->fifo.nb.total, st->fifo.nb.gyro, in inv_icm42600_buffer_hwfifo_flush()
561 if (st->fifo.nb.accel > 0) { in inv_icm42600_buffer_hwfifo_flush()
563 inv_sensors_timestamp_interrupt(ts, st->fifo.period, in inv_icm42600_buffer_hwfifo_flush()
564 st->fifo.nb.total, st->fifo.nb.accel, in inv_icm42600_buffer_hwfifo_flush()
580 * Default FIFO configuration (bits 7 to 5) in inv_icm42600_buffer_init()
582 * - FIFO count in bytes in inv_icm42600_buffer_init()
583 * - FIFO count in big endian in inv_icm42600_buffer_init()
592 * Enable FIFO partial read and continuous watermark interrupt. in inv_icm42600_buffer_init()
593 * Disable all FIFO EN bits. in inv_icm42600_buffer_init()