Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef __SOUND_I2C_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __SOUND_I2C_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define SND_I2C_DEVICE_ADDRTEN	(1<<0)	/* 10-bit I2C address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) struct snd_i2c_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	struct snd_i2c_bus *bus;	/* I2C bus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	char name[32];		/* some useful device name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	unsigned short flags;	/* device flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	unsigned short addr;	/* device address (might be 10-bit) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	unsigned long private_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	void *private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	void (*private_free)(struct snd_i2c_device *device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define snd_i2c_device(n) list_entry(n, struct snd_i2c_device, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct snd_i2c_bit_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	void (*start)(struct snd_i2c_bus *bus);	/* transfer start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	void (*stop)(struct snd_i2c_bus *bus);	/* transfer stop */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	void (*direction)(struct snd_i2c_bus *bus, int clock, int data);  /* set line direction (0 = write, 1 = read) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	void (*setlines)(struct snd_i2c_bus *bus, int clock, int data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	int (*getclock)(struct snd_i2c_bus *bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	int (*getdata)(struct snd_i2c_bus *bus, int ack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct snd_i2c_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	int (*sendbytes)(struct snd_i2c_device *device, unsigned char *bytes, int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	int (*readbytes)(struct snd_i2c_device *device, unsigned char *bytes, int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	int (*probeaddr)(struct snd_i2c_bus *bus, unsigned short addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct snd_i2c_bus {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	struct snd_card *card;	/* card which I2C belongs to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	char name[32];		/* some useful label */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	struct mutex lock_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	struct snd_i2c_bus *master;	/* master bus when SCK/SCL is shared */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	struct list_head buses;	/* master: slave buses sharing SCK/SCL, slave: link list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	struct list_head devices; /* attached devices to this bus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		struct snd_i2c_bit_ops *bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		void *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	} hw_ops;		/* lowlevel operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	const struct snd_i2c_ops *ops;	/* midlevel operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	unsigned long private_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	void *private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	void (*private_free)(struct snd_i2c_bus *bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define snd_i2c_slave_bus(n) list_entry(n, struct snd_i2c_bus, buses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int snd_i2c_bus_create(struct snd_card *card, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		       struct snd_i2c_bus *master, struct snd_i2c_bus **ri2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int snd_i2c_device_create(struct snd_i2c_bus *bus, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 			  unsigned char addr, struct snd_i2c_device **rdevice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int snd_i2c_device_free(struct snd_i2c_device *device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static inline void snd_i2c_lock(struct snd_i2c_bus *bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	if (bus->master)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 		mutex_lock(&bus->master->lock_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 		mutex_lock(&bus->lock_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static inline void snd_i2c_unlock(struct snd_i2c_bus *bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	if (bus->master)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 		mutex_unlock(&bus->master->lock_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 		mutex_unlock(&bus->lock_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int snd_i2c_sendbytes(struct snd_i2c_device *device, unsigned char *bytes, int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int snd_i2c_readbytes(struct snd_i2c_device *device, unsigned char *bytes, int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int snd_i2c_probeaddr(struct snd_i2c_bus *bus, unsigned short addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #endif /* __SOUND_I2C_H */