diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/i2c-algo-pca.h | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/include/linux/i2c-algo-pca.h b/include/linux/i2c-algo-pca.h index fce47c051bb..adcb3dc7ac2 100644 --- a/include/linux/i2c-algo-pca.h +++ b/include/linux/i2c-algo-pca.h @@ -1,14 +1,41 @@ #ifndef _LINUX_I2C_ALGO_PCA_H #define _LINUX_I2C_ALGO_PCA_H +/* Clock speeds for the bus */ +#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 */ + +#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 { - int (*get_own) (struct i2c_algo_pca_data *adap); /* Obtain own address */ - int (*get_clock) (struct i2c_algo_pca_data *adap); - void (*write_byte) (struct i2c_algo_pca_data *adap, int reg, int val); - int (*read_byte) (struct i2c_algo_pca_data *adap, int reg); - int (*wait_for_interrupt) (struct i2c_algo_pca_data *adap); + 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); + /* i2c_clock values are defined in linux/i2c-algo-pca.h */ + unsigned int i2c_clock; }; int i2c_pca_add_bus(struct i2c_adapter *); +int i2c_pca_add_numbered_bus(struct i2c_adapter *); #endif /* _LINUX_I2C_ALGO_PCA_H */ |