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authorwdenk <wdenk>2002-03-08 21:31:05 +0000
committerwdenk <wdenk>2002-03-08 21:31:05 +0000
commit012771d88adfb5e0886591880041f05fc8b15bdd (patch)
tree9cd947b8b4c6f05cff5be1b69a0f1ca81b2c86ec /board/gth/ee_dev.h
parent67fc21f34ef642417e7418a0575d5b5ff70d77d8 (diff)
downloadblackbird-obmc-uboot-012771d88adfb5e0886591880041f05fc8b15bdd.tar.gz
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+/* By Thomas.Lange@Corelatus.com 001025
+ $Revision: 1.6 $
+
+ Definitions for EEPROM/VOLT METER DS2438
+ Copyright (C) 2000-2001 Corelatus AB */
+
+#ifndef INCeedevh
+#define INCeedevh
+
+#define E_DEBUG(fmt,args...) if( Debug ) printk(KERN_DEBUG"EE: " fmt, ##args)
+
+#define PORT_B_PAR ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbpar
+#define PORT_B_ODR ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbodr
+#define PORT_B_DIR ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbdir
+#define PORT_B_DAT ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbdat
+
+#define SET_PORT_B_INPUT(Mask) PORT_B_DIR &= ~(Mask)
+#define SET_PORT_B_OUTPUT(Mask) PORT_B_DIR |= Mask
+
+#define WRITE_PORT_B(Mask,Value) { \
+ if (Value) PORT_B_DAT |= Mask; \
+ else PORT_B_DAT &= ~(Mask); \
+ }
+#define WRITE_PORT(Value) WRITE_PORT_B(PB_EEPROM,Value)
+
+#define READ_PORT (PORT_B_DAT&PB_EEPROM)
+
+/* 64 bytes chip */
+#define EE_CHIP_SIZE 64
+
+/* We use this resistor for measuring the current drain on 3.3V */
+#define CURRENT_RESISTOR 0.022
+
+/* microsecs
+ Pull line down at least this long for reset pulse */
+#define RESET_LOW_TIME 490
+
+/* Read presence pulse after we release reset pulse */
+#define PRESENCE_TIMEOUT 100
+#define PRESENCE_LOW_TIME 200
+
+#define WRITE_0_LOW 80
+#define WRITE_1_LOW 2
+#define TOTAL_WRITE_LOW 80
+
+#define READ_LOW 2
+#define READ_TIMEOUT 10
+#define TOTAL_READ_LOW 80
+
+/*** Rom function commands ***/
+#define READ_ROM 0x33
+#define MATCH_ROM 0x55
+#define SKIP_ROM 0xCC
+#define SEARCH_ROM 0xF0
+
+
+/*** Memory_command_function ***/
+#define WRITE_SCRATCHPAD 0x4E
+#define READ_SCRATCHPAD 0xBE
+#define COPY_SCRATCHPAD 0x48
+#define RECALL_MEMORY 0xB8
+#define CONVERT_TEMP 0x44
+#define CONVERT_VOLTAGE 0xB4
+
+/* Chip is divided in 8 pages, 8 bytes each */
+
+#define EE_PAGE_SIZE 8
+
+/* All chip data we want are in page 0 */
+
+/* Bytes in page 0 */
+#define EE_P0_STATUS 0
+#define EE_P0_TEMP_LSB 1
+#define EE_P0_TEMP_MSB 2
+#define EE_P0_VOLT_LSB 3
+#define EE_P0_VOLT_MSB 4
+#define EE_P0_CURRENT_LSB 5
+#define EE_P0_CURRENT_MSB 6
+
+
+/* 40 byte user data is located at page 3-7 */
+#define EE_USER_PAGE_0 3
+#define USER_PAGES 5
+
+#endif /* INCeedevh */
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