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| 1 | +/* SPDX-License-Identifier: GPL-2.0-only */ |
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| 1 | 2 | /* |
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| 2 | 3 | * i2c_pxa.h |
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| 3 | 4 | * |
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| 4 | 5 | * Copyright (C) 2002 Intrinsyc Software Inc. |
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| 5 | | - * |
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| 6 | | - * This program is free software; you can redistribute it and/or modify |
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| 7 | | - * it under the terms of the GNU General Public License version 2 as |
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| 8 | | - * published by the Free Software Foundation. |
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| 9 | | - * |
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| 10 | 6 | */ |
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| 11 | 7 | #ifndef _I2C_PXA_H_ |
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| 12 | 8 | #define _I2C_PXA_H_ |
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| 13 | 9 | |
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| 14 | | -#if 0 |
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| 15 | | -#define DEF_TIMEOUT 3 |
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| 16 | | -#else |
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| 17 | | -/* need a longer timeout if we're dealing with the fact we may well be |
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| 18 | | - * looking at a multi-master environment |
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| 19 | | -*/ |
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| 20 | | -#define DEF_TIMEOUT 32 |
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| 21 | | -#endif |
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| 22 | | - |
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| 23 | | -#define BUS_ERROR (-EREMOTEIO) |
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| 24 | | -#define XFER_NAKED (-ECONNREFUSED) |
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| 25 | | -#define I2C_RETRY (-2000) /* an error has occurred retry transmit */ |
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| 26 | | - |
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| 27 | | -/* ICR initialize bit values |
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| 28 | | -* |
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| 29 | | -* 15. FM 0 (100 Khz operation) |
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| 30 | | -* 14. UR 0 (No unit reset) |
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| 31 | | -* 13. SADIE 0 (Disables the unit from interrupting on slave addresses |
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| 32 | | -* matching its slave address) |
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| 33 | | -* 12. ALDIE 0 (Disables the unit from interrupt when it loses arbitration |
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| 34 | | -* in master mode) |
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| 35 | | -* 11. SSDIE 0 (Disables interrupts from a slave stop detected, in slave mode) |
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| 36 | | -* 10. BEIE 1 (Enable interrupts from detected bus errors, no ACK sent) |
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| 37 | | -* 9. IRFIE 1 (Enable interrupts from full buffer received) |
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| 38 | | -* 8. ITEIE 1 (Enables the I2C unit to interrupt when transmit buffer empty) |
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| 39 | | -* 7. GCD 1 (Disables i2c unit response to general call messages as a slave) |
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| 40 | | -* 6. IUE 0 (Disable unit until we change settings) |
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| 41 | | -* 5. SCLE 1 (Enables the i2c clock output for master mode (drives SCL) |
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| 42 | | -* 4. MA 0 (Only send stop with the ICR stop bit) |
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| 43 | | -* 3. TB 0 (We are not transmitting a byte initially) |
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| 44 | | -* 2. ACKNAK 0 (Send an ACK after the unit receives a byte) |
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| 45 | | -* 1. STOP 0 (Do not send a STOP) |
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| 46 | | -* 0. START 0 (Do not send a START) |
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| 47 | | -* |
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| 48 | | -*/ |
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| 49 | | -#define I2C_ICR_INIT (ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD | ICR_SCLE) |
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| 50 | | - |
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| 51 | | -/* I2C status register init values |
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| 52 | | - * |
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| 53 | | - * 10. BED 1 (Clear bus error detected) |
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| 54 | | - * 9. SAD 1 (Clear slave address detected) |
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| 55 | | - * 7. IRF 1 (Clear IDBR Receive Full) |
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| 56 | | - * 6. ITE 1 (Clear IDBR Transmit Empty) |
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| 57 | | - * 5. ALD 1 (Clear Arbitration Loss Detected) |
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| 58 | | - * 4. SSD 1 (Clear Slave Stop Detected) |
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| 59 | | - */ |
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| 60 | | -#define I2C_ISR_INIT 0x7FF /* status register init */ |
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| 61 | | - |
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| 62 | | -struct i2c_slave_client; |
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| 63 | | - |
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| 64 | 10 | struct i2c_pxa_platform_data { |
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| 65 | | - unsigned int slave_addr; |
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| 66 | | - struct i2c_slave_client *slave; |
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| 67 | 11 | unsigned int class; |
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| 68 | 12 | unsigned int use_pio :1; |
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| 69 | 13 | unsigned int fast_mode :1; |
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