| /* | |
| * i2c_pxa.h | |
| * | |
| * Copyright (C) 2002 Intrinsyc Software Inc. | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License version 2 as | |
| * published by the Free Software Foundation. | |
| * | |
| */ | |
| #ifndef _I2C_PXA_H_ | |
| #define _I2C_PXA_H_ | |
| #if 0 | |
| #define DEF_TIMEOUT 3 | |
| #else | |
| /* need a longer timeout if we're dealing with the fact we may well be | |
| * looking at a multi-master environment | |
| */ | |
| #define DEF_TIMEOUT 32 | |
| #endif | |
| #define BUS_ERROR (-EREMOTEIO) | |
| #define XFER_NAKED (-ECONNREFUSED) | |
| #define I2C_RETRY (-2000) /* an error has occurred retry transmit */ | |
| /* ICR initialize bit values | |
| * | |
| * 15. FM 0 (100 Khz operation) | |
| * 14. UR 0 (No unit reset) | |
| * 13. SADIE 0 (Disables the unit from interrupting on slave addresses | |
| * matching its slave address) | |
| * 12. ALDIE 0 (Disables the unit from interrupt when it loses arbitration | |
| * in master mode) | |
| * 11. SSDIE 0 (Disables interrupts from a slave stop detected, in slave mode) | |
| * 10. BEIE 1 (Enable interrupts from detected bus errors, no ACK sent) | |
| * 9. IRFIE 1 (Enable interrupts from full buffer received) | |
| * 8. ITEIE 1 (Enables the I2C unit to interrupt when transmit buffer empty) | |
| * 7. GCD 1 (Disables i2c unit response to general call messages as a slave) | |
| * 6. IUE 0 (Disable unit until we change settings) | |
| * 5. SCLE 1 (Enables the i2c clock output for master mode (drives SCL) | |
| * 4. MA 0 (Only send stop with the ICR stop bit) | |
| * 3. TB 0 (We are not transmitting a byte initially) | |
| * 2. ACKNAK 0 (Send an ACK after the unit receives a byte) | |
| * 1. STOP 0 (Do not send a STOP) | |
| * 0. START 0 (Do not send a START) | |
| * | |
| */ | |
| #define I2C_ICR_INIT (ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD | ICR_SCLE) | |
| /* I2C status register init values | |
| * | |
| * 10. BED 1 (Clear bus error detected) | |
| * 9. SAD 1 (Clear slave address detected) | |
| * 7. IRF 1 (Clear IDBR Receive Full) | |
| * 6. ITE 1 (Clear IDBR Transmit Empty) | |
| * 5. ALD 1 (Clear Arbitration Loss Detected) | |
| * 4. SSD 1 (Clear Slave Stop Detected) | |
| */ | |
| #define I2C_ISR_INIT 0x7FF /* status register init */ | |
| struct i2c_slave_client; | |
| struct i2c_pxa_platform_data { | |
| unsigned int slave_addr; | |
| struct i2c_slave_client *slave; | |
| unsigned int class; | |
| unsigned int use_pio :1; | |
| unsigned int fast_mode :1; | |
| unsigned int high_mode:1; | |
| unsigned char master_code; | |
| unsigned long rate; | |
| }; | |
| extern void pxa_set_i2c_info(struct i2c_pxa_platform_data *info); | |
| #ifdef CONFIG_PXA27x | |
| extern void pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info); | |
| #endif | |
| #ifdef CONFIG_PXA3xx | |
| extern void pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info); | |
| #endif | |
| #endif |