Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _LINUX_I2C_ALGO_PCA_H |
2 | #define _LINUX_I2C_ALGO_PCA_H | |
3 | ||
eff9ec95 MAC |
4 | /* Chips known to the pca algo */ |
5 | #define I2C_PCA_CHIP_9564 0x00 | |
6 | #define I2C_PCA_CHIP_9665 0x01 | |
7 | ||
8 | /* Internal period for PCA9665 oscilator */ | |
9 | #define I2C_PCA_OSC_PER 3 /* e10-8s */ | |
10 | ||
11 | /* Clock speeds for the bus for PCA9564*/ | |
c01b0831 WS |
12 | #define I2C_PCA_CON_330kHz 0x00 |
13 | #define I2C_PCA_CON_288kHz 0x01 | |
14 | #define I2C_PCA_CON_217kHz 0x02 | |
15 | #define I2C_PCA_CON_146kHz 0x03 | |
16 | #define I2C_PCA_CON_88kHz 0x04 | |
17 | #define I2C_PCA_CON_59kHz 0x05 | |
18 | #define I2C_PCA_CON_44kHz 0x06 | |
19 | #define I2C_PCA_CON_36kHz 0x07 | |
20 | ||
21 | /* PCA9564 registers */ | |
22 | #define I2C_PCA_STA 0x00 /* STATUS Read Only */ | |
23 | #define I2C_PCA_TO 0x00 /* TIMEOUT Write Only */ | |
24 | #define I2C_PCA_DAT 0x01 /* DATA Read/Write */ | |
25 | #define I2C_PCA_ADR 0x02 /* OWN ADR Read/Write */ | |
26 | #define I2C_PCA_CON 0x03 /* CONTROL Read/Write */ | |
27 | ||
eff9ec95 MAC |
28 | /* PCA9665 registers */ |
29 | #define I2C_PCA_INDPTR 0x00 /* INDIRECT Pointer Write Only */ | |
30 | #define I2C_PCA_IND 0x02 /* INDIRECT Read/Write */ | |
31 | ||
32 | /* PCA9665 indirect registers */ | |
33 | #define I2C_PCA_ICOUNT 0x00 /* Byte Count for buffered mode */ | |
34 | #define I2C_PCA_IADR 0x01 /* OWN ADR */ | |
35 | #define I2C_PCA_ISCLL 0x02 /* SCL LOW period */ | |
36 | #define I2C_PCA_ISCLH 0x03 /* SCL HIGH period */ | |
37 | #define I2C_PCA_ITO 0x04 /* TIMEOUT */ | |
38 | #define I2C_PCA_IPRESET 0x05 /* Parallel bus reset */ | |
39 | #define I2C_PCA_IMODE 0x06 /* I2C Bus mode */ | |
40 | ||
41 | /* PCA9665 I2C bus mode */ | |
42 | #define I2C_PCA_MODE_STD 0x00 /* Standard mode */ | |
43 | #define I2C_PCA_MODE_FAST 0x01 /* Fast mode */ | |
44 | #define I2C_PCA_MODE_FASTP 0x02 /* Fast Plus mode */ | |
45 | #define I2C_PCA_MODE_TURBO 0x03 /* Turbo mode */ | |
46 | ||
47 | ||
c01b0831 WS |
48 | #define I2C_PCA_CON_AA 0x80 /* Assert Acknowledge */ |
49 | #define I2C_PCA_CON_ENSIO 0x40 /* Enable */ | |
50 | #define I2C_PCA_CON_STA 0x20 /* Start */ | |
51 | #define I2C_PCA_CON_STO 0x10 /* Stop */ | |
52 | #define I2C_PCA_CON_SI 0x08 /* Serial Interrupt */ | |
53 | #define I2C_PCA_CON_CR 0x07 /* Clock Rate (MASK) */ | |
54 | ||
1da177e4 | 55 | struct i2c_algo_pca_data { |
c01b0831 WS |
56 | void *data; /* private low level data */ |
57 | void (*write_byte) (void *data, int reg, int val); | |
58 | int (*read_byte) (void *data, int reg); | |
59 | int (*wait_for_completion) (void *data); | |
60 | void (*reset_chip) (void *data); | |
eff9ec95 MAC |
61 | /* For PCA9564, use one of the predefined frequencies: |
62 | * 330000, 288000, 217000, 146000, 88000, 59000, 44000, 36000 | |
63 | * For PCA9665, use the frequency you want here. */ | |
c01b0831 | 64 | unsigned int i2c_clock; |
a76e7c68 | 65 | unsigned int chip; |
1da177e4 LT |
66 | }; |
67 | ||
1da177e4 | 68 | int i2c_pca_add_bus(struct i2c_adapter *); |
c01b0831 | 69 | int i2c_pca_add_numbered_bus(struct i2c_adapter *); |
1da177e4 LT |
70 | |
71 | #endif /* _LINUX_I2C_ALGO_PCA_H */ |