Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Jean-Baptiste Maneyrol | 313 | 98.43% | 5 | 83.33% |
Jonathan Cameron | 5 | 1.57% | 1 | 16.67% |
Total | 318 | 6 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2020 Invensense, Inc. */ #ifndef INV_ICM42600_BUFFER_H_ #define INV_ICM42600_BUFFER_H_ #include <linux/kernel.h> #include <linux/bits.h> struct inv_icm42600_state; #define INV_ICM42600_SENSOR_GYRO BIT(0) #define INV_ICM42600_SENSOR_ACCEL BIT(1) #define INV_ICM42600_SENSOR_TEMP BIT(2) /** * struct inv_icm42600_fifo - FIFO state variables * @on: reference counter for FIFO on. * @en: bits field of INV_ICM42600_SENSOR_* for FIFO EN bits. * @period: FIFO internal period. * @watermark: watermark configuration values for accel and gyro. * @count: number of bytes in the FIFO data buffer. * @nb: gyro, accel and total samples in the FIFO data buffer. * @data: FIFO data buffer aligned for DMA (2kB + 32 bytes of read cache). */ struct inv_icm42600_fifo { unsigned int on; unsigned int en; uint32_t period; struct { unsigned int gyro; unsigned int accel; unsigned int eff_gyro; unsigned int eff_accel; } watermark; size_t count; struct { size_t gyro; size_t accel; size_t total; } nb; uint8_t data[2080] __aligned(IIO_DMA_MINALIGN); }; /* FIFO data packet */ struct inv_icm42600_fifo_sensor_data { __be16 x; __be16 y; __be16 z; } __packed; #define INV_ICM42600_FIFO_DATA_INVALID -32768 static inline int16_t inv_icm42600_fifo_get_sensor_data(__be16 d) { return be16_to_cpu(d); } static inline bool inv_icm42600_fifo_is_data_valid(const struct inv_icm42600_fifo_sensor_data *s) { int16_t x, y, z; x = inv_icm42600_fifo_get_sensor_data(s->x); y = inv_icm42600_fifo_get_sensor_data(s->y); z = inv_icm42600_fifo_get_sensor_data(s->z); if (x == INV_ICM42600_FIFO_DATA_INVALID && y == INV_ICM42600_FIFO_DATA_INVALID && z == INV_ICM42600_FIFO_DATA_INVALID) return false; return true; } ssize_t inv_icm42600_fifo_decode_packet(const void *packet, const void **accel, const void **gyro, const int8_t **temp, const void **timestamp, unsigned int *odr); extern const struct iio_buffer_setup_ops inv_icm42600_buffer_ops; int inv_icm42600_buffer_init(struct inv_icm42600_state *st); void inv_icm42600_buffer_update_fifo_period(struct inv_icm42600_state *st); int inv_icm42600_buffer_set_fifo_en(struct inv_icm42600_state *st, unsigned int fifo_en); int inv_icm42600_buffer_update_watermark(struct inv_icm42600_state *st); int inv_icm42600_buffer_fifo_read(struct inv_icm42600_state *st, unsigned int max); int inv_icm42600_buffer_fifo_parse(struct inv_icm42600_state *st); int inv_icm42600_buffer_hwfifo_flush(struct inv_icm42600_state *st, unsigned int count); #endif
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