Release 4.16 include/linux/i2c-algo-pca.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_I2C_ALGO_PCA_H
#define _LINUX_I2C_ALGO_PCA_H
/* Chips known to the pca algo */
#define I2C_PCA_CHIP_9564 0x00
#define I2C_PCA_CHIP_9665 0x01
/* Internal period for PCA9665 oscilator */
#define I2C_PCA_OSC_PER 3
/* e10-8s */
/* Clock speeds for the bus for PCA9564*/
#define I2C_PCA_CON_330kHz 0x00
#define I2C_PCA_CON_288kHz 0x01
#define I2C_PCA_CON_217kHz 0x02
#define I2C_PCA_CON_146kHz 0x03
#define I2C_PCA_CON_88kHz 0x04
#define I2C_PCA_CON_59kHz 0x05
#define I2C_PCA_CON_44kHz 0x06
#define I2C_PCA_CON_36kHz 0x07
/* PCA9564 registers */
#define I2C_PCA_STA 0x00
/* STATUS Read Only */
#define I2C_PCA_TO 0x00
/* TIMEOUT Write Only */
#define I2C_PCA_DAT 0x01
/* DATA Read/Write */
#define I2C_PCA_ADR 0x02
/* OWN ADR Read/Write */
#define I2C_PCA_CON 0x03
/* CONTROL Read/Write */
/* PCA9665 registers */
#define I2C_PCA_INDPTR 0x00
/* INDIRECT Pointer Write Only */
#define I2C_PCA_IND 0x02
/* INDIRECT Read/Write */
/* PCA9665 indirect registers */
#define I2C_PCA_ICOUNT 0x00
/* Byte Count for buffered mode */
#define I2C_PCA_IADR 0x01
/* OWN ADR */
#define I2C_PCA_ISCLL 0x02
/* SCL LOW period */
#define I2C_PCA_ISCLH 0x03
/* SCL HIGH period */
#define I2C_PCA_ITO 0x04
/* TIMEOUT */
#define I2C_PCA_IPRESET 0x05
/* Parallel bus reset */
#define I2C_PCA_IMODE 0x06
/* I2C Bus mode */
/* PCA9665 I2C bus mode */
#define I2C_PCA_MODE_STD 0x00
/* Standard mode */
#define I2C_PCA_MODE_FAST 0x01
/* Fast mode */
#define I2C_PCA_MODE_FASTP 0x02
/* Fast Plus mode */
#define I2C_PCA_MODE_TURBO 0x03
/* Turbo mode */
#define I2C_PCA_CON_AA 0x80
/* Assert Acknowledge */
#define I2C_PCA_CON_ENSIO 0x40
/* Enable */
#define I2C_PCA_CON_STA 0x20
/* Start */
#define I2C_PCA_CON_STO 0x10
/* Stop */
#define I2C_PCA_CON_SI 0x08
/* Serial Interrupt */
#define I2C_PCA_CON_CR 0x07
/* Clock Rate (MASK) */
struct i2c_algo_pca_data {
void *data; /* private low level data */
void (*write_byte) (void *data, int reg, int val);
int (*read_byte) (void *data, int reg);
int (*wait_for_completion) (void *data);
void (*reset_chip) (void *data);
/* For PCA9564, use one of the predefined frequencies:
* 330000, 288000, 217000, 146000, 88000, 59000, 44000, 36000
* For PCA9665, use the frequency you want here. */
unsigned int i2c_clock;
unsigned int chip;
};
int i2c_pca_add_bus(struct i2c_adapter *);
int i2c_pca_add_numbered_bus(struct i2c_adapter *);
#endif /* _LINUX_I2C_ALGO_PCA_H */
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