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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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