Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _SCD30_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _SCD30_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) struct scd30_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) enum scd30_cmd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	/* start continuous measurement with pressure compensation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	CMD_START_MEAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	/* stop continuous measurement */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	CMD_STOP_MEAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	/* set/get measurement interval */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	CMD_MEAS_INTERVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	/* check whether new measurement is ready */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	CMD_MEAS_READY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	/* get measurement */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	CMD_READ_MEAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	/* turn on/off automatic self calibration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	CMD_ASC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	/* set/get forced recalibration value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	CMD_FRC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	/* set/get temperature offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	CMD_TEMP_OFFSET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	/* get firmware version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	CMD_FW_VERSION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	/* reset sensor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	CMD_RESET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	 * Command for altitude compensation was omitted intentionally because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	 * the same can be achieved by means of CMD_START_MEAS which takes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	 * pressure above the sea level as an argument.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define SCD30_MEAS_COUNT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) typedef int (*scd30_command_t)(struct scd30_state *state, enum scd30_cmd cmd, u16 arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 			       void *response, int size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct scd30_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	/* serialize access to the device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	struct regulator *vdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	struct completion meas_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	 * priv pointer is solely for serdev driver private data. We keep it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	 * here because driver_data inside dev has been already used for iio and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	 * struct serdev_device doesn't have one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	void *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	 * no way to retrieve current ambient pressure compensation value from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	 * the sensor so keep one around
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	u16 pressure_comp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	u16 meas_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	int meas[SCD30_MEAS_COUNT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	scd30_command_t command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int scd30_suspend(struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int scd30_resume(struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static __maybe_unused SIMPLE_DEV_PM_OPS(scd30_pm_ops, scd30_suspend, scd30_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int scd30_probe(struct device *dev, int irq, const char *name, void *priv, scd30_command_t command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #endif