| Dirk Behme | 7d264c1 | 2008-12-14 09:47:18 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2004-2008 |
| 3 | * Texas Instruments, <www.ti.com> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | #ifndef _I2C_H_ |
| 24 | #define _I2C_H_ |
| 25 | |
| 26 | #define I2C_DEFAULT_BASE I2C_BASE1 |
| 27 | |
| 28 | #define I2C_REV (I2C_DEFAULT_BASE + 0x00) |
| 29 | #define I2C_IE (I2C_DEFAULT_BASE + 0x04) |
| 30 | #define I2C_STAT (I2C_DEFAULT_BASE + 0x08) |
| 31 | #define I2C_IV (I2C_DEFAULT_BASE + 0x0c) |
| 32 | #define I2C_BUF (I2C_DEFAULT_BASE + 0x14) |
| 33 | #define I2C_CNT (I2C_DEFAULT_BASE + 0x18) |
| 34 | #define I2C_DATA (I2C_DEFAULT_BASE + 0x1c) |
| 35 | #define I2C_SYSC (I2C_DEFAULT_BASE + 0x20) |
| 36 | #define I2C_CON (I2C_DEFAULT_BASE + 0x24) |
| 37 | #define I2C_OA (I2C_DEFAULT_BASE + 0x28) |
| 38 | #define I2C_SA (I2C_DEFAULT_BASE + 0x2c) |
| 39 | #define I2C_PSC (I2C_DEFAULT_BASE + 0x30) |
| 40 | #define I2C_SCLL (I2C_DEFAULT_BASE + 0x34) |
| 41 | #define I2C_SCLH (I2C_DEFAULT_BASE + 0x38) |
| 42 | #define I2C_SYSTEST (I2C_DEFAULT_BASE + 0x3c) |
| 43 | |
| 44 | /* I2C masks */ |
| 45 | |
| 46 | /* I2C Interrupt Enable Register (I2C_IE): */ |
| 47 | #define I2C_IE_GC_IE (1 << 5) |
| 48 | #define I2C_IE_XRDY_IE (1 << 4) /* Transmit data ready interrupt enable */ |
| 49 | #define I2C_IE_RRDY_IE (1 << 3) /* Receive data ready interrupt enable */ |
| 50 | #define I2C_IE_ARDY_IE (1 << 2) /* Register access ready interrupt enable */ |
| 51 | #define I2C_IE_NACK_IE (1 << 1) /* No acknowledgment interrupt enable */ |
| 52 | #define I2C_IE_AL_IE (1 << 0) /* Arbitration lost interrupt enable */ |
| 53 | |
| 54 | /* I2C Status Register (I2C_STAT): */ |
| 55 | |
| 56 | #define I2C_STAT_SBD (1 << 15) /* Single byte data */ |
| 57 | #define I2C_STAT_BB (1 << 12) /* Bus busy */ |
| 58 | #define I2C_STAT_ROVR (1 << 11) /* Receive overrun */ |
| 59 | #define I2C_STAT_XUDF (1 << 10) /* Transmit underflow */ |
| 60 | #define I2C_STAT_AAS (1 << 9) /* Address as slave */ |
| 61 | #define I2C_STAT_GC (1 << 5) |
| 62 | #define I2C_STAT_XRDY (1 << 4) /* Transmit data ready */ |
| 63 | #define I2C_STAT_RRDY (1 << 3) /* Receive data ready */ |
| 64 | #define I2C_STAT_ARDY (1 << 2) /* Register access ready */ |
| 65 | #define I2C_STAT_NACK (1 << 1) /* No acknowledgment interrupt enable */ |
| 66 | #define I2C_STAT_AL (1 << 0) /* Arbitration lost interrupt enable */ |
| 67 | |
| 68 | /* I2C Interrupt Code Register (I2C_INTCODE): */ |
| 69 | |
| 70 | #define I2C_INTCODE_MASK 7 |
| 71 | #define I2C_INTCODE_NONE 0 |
| 72 | #define I2C_INTCODE_AL 1 /* Arbitration lost */ |
| 73 | #define I2C_INTCODE_NAK 2 /* No acknowledgement/general call */ |
| 74 | #define I2C_INTCODE_ARDY 3 /* Register access ready */ |
| 75 | #define I2C_INTCODE_RRDY 4 /* Rcv data ready */ |
| 76 | #define I2C_INTCODE_XRDY 5 /* Xmit data ready */ |
| 77 | |
| 78 | /* I2C Buffer Configuration Register (I2C_BUF): */ |
| 79 | |
| 80 | #define I2C_BUF_RDMA_EN (1 << 15) /* Receive DMA channel enable */ |
| 81 | #define I2C_BUF_XDMA_EN (1 << 7) /* Transmit DMA channel enable */ |
| 82 | |
| 83 | /* I2C Configuration Register (I2C_CON): */ |
| 84 | |
| 85 | #define I2C_CON_EN (1 << 15) /* I2C module enable */ |
| 86 | #define I2C_CON_BE (1 << 14) /* Big endian mode */ |
| 87 | #define I2C_CON_STB (1 << 11) /* Start byte mode (master mode only) */ |
| 88 | #define I2C_CON_MST (1 << 10) /* Master/slave mode */ |
| 89 | #define I2C_CON_TRX (1 << 9) /* Transmitter/receiver mode */ |
| 90 | /* (master mode only) */ |
| 91 | #define I2C_CON_XA (1 << 8) /* Expand address */ |
| 92 | #define I2C_CON_STP (1 << 1) /* Stop condition (master mode only) */ |
| 93 | #define I2C_CON_STT (1 << 0) /* Start condition (master mode only) */ |
| 94 | |
| 95 | /* I2C System Test Register (I2C_SYSTEST): */ |
| 96 | |
| 97 | #define I2C_SYSTEST_ST_EN (1 << 15) /* System test enable */ |
| 98 | #define I2C_SYSTEST_FREE (1 << 14) /* Free running mode, on brkpoint) */ |
| 99 | #define I2C_SYSTEST_TMODE_MASK (3 << 12) /* Test mode select */ |
| 100 | #define I2C_SYSTEST_TMODE_SHIFT (12) /* Test mode select */ |
| 101 | #define I2C_SYSTEST_SCL_I (1 << 3) /* SCL line sense input value */ |
| 102 | #define I2C_SYSTEST_SCL_O (1 << 2) /* SCL line drive output value */ |
| 103 | #define I2C_SYSTEST_SDA_I (1 << 1) /* SDA line sense input value */ |
| 104 | #define I2C_SYSTEST_SDA_O (1 << 0) /* SDA line drive output value */ |
| 105 | |
| 106 | #define I2C_SCLL_SCLL 0 |
| 107 | #define I2C_SCLL_SCLL_M 0xFF |
| 108 | #define I2C_SCLL_HSSCLL 8 |
| 109 | #define I2C_SCLH_HSSCLL_M 0xFF |
| 110 | #define I2C_SCLH_SCLH 0 |
| 111 | #define I2C_SCLH_SCLH_M 0xFF |
| 112 | #define I2C_SCLH_HSSCLH 8 |
| 113 | #define I2C_SCLH_HSSCLH_M 0xFF |
| 114 | |
| 115 | #define OMAP_I2C_STANDARD 100 |
| 116 | #define OMAP_I2C_FAST_MODE 400 |
| 117 | #define OMAP_I2C_HIGH_SPEED 3400 |
| 118 | |
| 119 | #define SYSTEM_CLOCK_12 12000 |
| 120 | #define SYSTEM_CLOCK_13 13000 |
| 121 | #define SYSTEM_CLOCK_192 19200 |
| 122 | #define SYSTEM_CLOCK_96 96000 |
| 123 | |
| 124 | #define I2C_IP_CLK SYSTEM_CLOCK_96 |
| 125 | #define I2C_PSC_MAX 0x0f |
| 126 | #define I2C_PSC_MIN 0x00 |
| 127 | |
| 128 | #endif /* _I2C_H_ */ |