projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 012771d8 WD |
1 | /* By Thomas.Lange@Corelatus.com 001025 |
| 2 | $Revision: 1.6 $ | |
| 3 | ||
| 4 | Definitions for EEPROM/VOLT METER DS2438 | |
| 5 | Copyright (C) 2000-2001 Corelatus AB */ | |
| 6 | ||
| 7 | #ifndef INCeedevh | |
| 8 | #define INCeedevh | |
| 9 | ||
| 10 | #define E_DEBUG(fmt,args...) if( Debug ) printk(KERN_DEBUG"EE: " fmt, ##args) | |
| 11 | ||
| 6d0f6bcf JCPV |
12 | #define PORT_B_PAR ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbpar |
| 13 | #define PORT_B_ODR ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbodr | |
| 14 | #define PORT_B_DIR ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbdir | |
| 15 | #define PORT_B_DAT ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbdat | |
| 012771d8 WD |
16 | |
| 17 | #define SET_PORT_B_INPUT(Mask) PORT_B_DIR &= ~(Mask) | |
| 18 | #define SET_PORT_B_OUTPUT(Mask) PORT_B_DIR |= Mask | |
| 19 | ||
| 20 | #define WRITE_PORT_B(Mask,Value) { \ | |
| 21 | if (Value) PORT_B_DAT |= Mask; \ | |
| 22 | else PORT_B_DAT &= ~(Mask); \ | |
| 23 | } | |
| 24 | #define WRITE_PORT(Value) WRITE_PORT_B(PB_EEPROM,Value) | |
| 25 | ||
| 26 | #define READ_PORT (PORT_B_DAT&PB_EEPROM) | |
| 27 | ||
| 28 | /* 64 bytes chip */ | |
| 29 | #define EE_CHIP_SIZE 64 | |
| 30 | ||
| 31 | /* We use this resistor for measuring the current drain on 3.3V */ | |
| 32 | #define CURRENT_RESISTOR 0.022 | |
| 33 | ||
| 34 | /* microsecs | |
| 35 | Pull line down at least this long for reset pulse */ | |
| 36 | #define RESET_LOW_TIME 490 | |
| 37 | ||
| 38 | /* Read presence pulse after we release reset pulse */ | |
| 39 | #define PRESENCE_TIMEOUT 100 | |
| 40 | #define PRESENCE_LOW_TIME 200 | |
| 41 | ||
| 42 | #define WRITE_0_LOW 80 | |
| 43 | #define WRITE_1_LOW 2 | |
| 44 | #define TOTAL_WRITE_LOW 80 | |
| 45 | ||
| 46 | #define READ_LOW 2 | |
| 47 | #define READ_TIMEOUT 10 | |
| 48 | #define TOTAL_READ_LOW 80 | |
| 49 | ||
| 50 | /*** Rom function commands ***/ | |
| 51 | #define READ_ROM 0x33 | |
| 52 | #define MATCH_ROM 0x55 | |
| 53 | #define SKIP_ROM 0xCC | |
| 54 | #define SEARCH_ROM 0xF0 | |
| 55 | ||
| 56 | ||
| 57 | /*** Memory_command_function ***/ | |
| 58 | #define WRITE_SCRATCHPAD 0x4E | |
| 59 | #define READ_SCRATCHPAD 0xBE | |
| 60 | #define COPY_SCRATCHPAD 0x48 | |
| 61 | #define RECALL_MEMORY 0xB8 | |
| 62 | #define CONVERT_TEMP 0x44 | |
| 63 | #define CONVERT_VOLTAGE 0xB4 | |
| 64 | ||
| 65 | /* Chip is divided in 8 pages, 8 bytes each */ | |
| 66 | ||
| 67 | #define EE_PAGE_SIZE 8 | |
| 68 | ||
| 69 | /* All chip data we want are in page 0 */ | |
| 70 | ||
| 71 | /* Bytes in page 0 */ | |
| 72 | #define EE_P0_STATUS 0 | |
| 73 | #define EE_P0_TEMP_LSB 1 | |
| 74 | #define EE_P0_TEMP_MSB 2 | |
| 75 | #define EE_P0_VOLT_LSB 3 | |
| 76 | #define EE_P0_VOLT_MSB 4 | |
| 77 | #define EE_P0_CURRENT_LSB 5 | |
| 78 | #define EE_P0_CURRENT_MSB 6 | |
| 79 | ||
| 80 | ||
| 81 | /* 40 byte user data is located at page 3-7 */ | |
| 82 | #define EE_USER_PAGE_0 3 | |
| 83 | #define USER_PAGES 5 | |
| 84 | ||
| 85 | #endif /* INCeedevh */ |