| Sergey Kubushyn | c74b210 | 2007-08-10 20:26:18 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2004 |
| 3 | * Texas Instruments, <www.ti.com> |
| 4 | * |
| 5 | * Some changes copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> |
| 6 | * |
| 7 | * See file CREDITS for list of people who contributed to this |
| 8 | * project. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License as |
| 12 | * published by the Free Software Foundation; either version 2 of |
| 13 | * the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 23 | * MA 02111-1307 USA |
| 24 | */ |
| 25 | #ifndef _DAVINCI_I2C_H_ |
| 26 | #define _DAVINCI_I2C_H_ |
| 27 | |
| 28 | #define I2C_WRITE 0 |
| 29 | #define I2C_READ 1 |
| 30 | |
| 31 | #define I2C_BASE 0x01c21000 |
| 32 | |
| 33 | #define I2C_OA (I2C_BASE + 0x00) |
| 34 | #define I2C_IE (I2C_BASE + 0x04) |
| 35 | #define I2C_STAT (I2C_BASE + 0x08) |
| 36 | #define I2C_SCLL (I2C_BASE + 0x0c) |
| 37 | #define I2C_SCLH (I2C_BASE + 0x10) |
| 38 | #define I2C_CNT (I2C_BASE + 0x14) |
| 39 | #define I2C_DRR (I2C_BASE + 0x18) |
| 40 | #define I2C_SA (I2C_BASE + 0x1c) |
| 41 | #define I2C_DXR (I2C_BASE + 0x20) |
| 42 | #define I2C_CON (I2C_BASE + 0x24) |
| 43 | #define I2C_IV (I2C_BASE + 0x28) |
| 44 | #define I2C_PSC (I2C_BASE + 0x30) |
| 45 | |
| 46 | /* I2C masks */ |
| 47 | |
| 48 | /* I2C Interrupt Enable Register (I2C_IE): */ |
| 49 | #define I2C_IE_SCD_IE (1 << 5) /* Stop condition detect interrupt enable */ |
| 50 | #define I2C_IE_XRDY_IE (1 << 4) /* Transmit data ready interrupt enable */ |
| 51 | #define I2C_IE_RRDY_IE (1 << 3) /* Receive data ready interrupt enable */ |
| 52 | #define I2C_IE_ARDY_IE (1 << 2) /* Register access ready interrupt enable */ |
| 53 | #define I2C_IE_NACK_IE (1 << 1) /* No acknowledgment interrupt enable */ |
| 54 | #define I2C_IE_AL_IE (1 << 0) /* Arbitration lost interrupt enable */ |
| 55 | |
| 56 | /* I2C Status Register (I2C_STAT): */ |
| 57 | |
| 58 | #define I2C_STAT_BB (1 << 12) /* Bus busy */ |
| 59 | #define I2C_STAT_ROVR (1 << 11) /* Receive overrun */ |
| 60 | #define I2C_STAT_XUDF (1 << 10) /* Transmit underflow */ |
| 61 | #define I2C_STAT_AAS (1 << 9) /* Address as slave */ |
| 62 | #define I2C_STAT_SCD (1 << 5) /* Stop condition detect */ |
| 63 | #define I2C_STAT_XRDY (1 << 4) /* Transmit data ready */ |
| 64 | #define I2C_STAT_RRDY (1 << 3) /* Receive data ready */ |
| 65 | #define I2C_STAT_ARDY (1 << 2) /* Register access ready */ |
| 66 | #define I2C_STAT_NACK (1 << 1) /* No acknowledgment interrupt enable */ |
| 67 | #define I2C_STAT_AL (1 << 0) /* Arbitration lost interrupt enable */ |
| 68 | |
| 69 | |
| 70 | /* I2C Interrupt Code Register (I2C_INTCODE): */ |
| 71 | |
| 72 | #define I2C_INTCODE_MASK 7 |
| 73 | #define I2C_INTCODE_NONE 0 |
| 74 | #define I2C_INTCODE_AL 1 /* Arbitration lost */ |
| 75 | #define I2C_INTCODE_NAK 2 /* No acknowledgement/general call */ |
| 76 | #define I2C_INTCODE_ARDY 3 /* Register access ready */ |
| 77 | #define I2C_INTCODE_RRDY 4 /* Rcv data ready */ |
| 78 | #define I2C_INTCODE_XRDY 5 /* Xmit data ready */ |
| 79 | #define I2C_INTCODE_SCD 6 /* Stop condition detect */ |
| 80 | |
| 81 | |
| 82 | /* I2C Configuration Register (I2C_CON): */ |
| 83 | |
| 84 | #define I2C_CON_EN (1 << 5) /* I2C module enable */ |
| 85 | #define I2C_CON_STB (1 << 4) /* Start byte mode (master mode only) */ |
| 86 | #define I2C_CON_MST (1 << 10) /* Master/slave mode */ |
| 87 | #define I2C_CON_TRX (1 << 9) /* Transmitter/receiver mode (master mode only) */ |
| 88 | #define I2C_CON_XA (1 << 8) /* Expand address */ |
| 89 | #define I2C_CON_STP (1 << 11) /* Stop condition (master mode only) */ |
| 90 | #define I2C_CON_STT (1 << 13) /* Start condition (master mode only) */ |
| 91 | |
| 92 | #define I2C_TIMEOUT 0xffff0000 /* Timeout mask for poll_i2c_irq() */ |
| 93 | |
| 94 | #endif |