minix/commands/eepromread/eepromread.h

#ifndef __EEPROMREAD_H
#define __EEPROMREAD_H

int eeprom_read(int fd, i2c_addr_t addr, uint16_t memaddr, void *buf,
						size_t buflen, int flags);
int board_info(int fd, i2c_addr_t address, int flags);

#endif /* __EEPROMREAD_H */
eepromread: simple program to view eeprom contents This program uses the i2c /dev interface to read the contents of EEPROMs and display it to the user in HEX and ASCII. It also has a mode that can display data in label:value pairs. That mode is used for board detection in the rc script to start the right i2c drivers for the board. Change-Id: I0bf5b13ffab5a89533c762d6881a145cf7f14914 2013-07-15 16:29:37 +02:00			`#ifndef __EEPROMREAD_H`
			`#define __EEPROMREAD_H`

			`int eeprom_read(int fd, i2c_addr_t addr, uint16_t memaddr, void *buf,`
i2c: increase BUFLEN/CMDLEN to 128, add page flag. 128 byte reads are much more common than 32 byte reads. The message passing + setup/teardown for a read is much more expensive, in terms of time, than the reading itself. A slightly bigger struct is well worth the time savings. This reduces read times for /dev/eeprom from 57 seconds per 4KB to 14 seconds. Additionally, make sending the page address in the eeprom driver and utility optional. This can save a little time when reading within the same page and allows support for smaller devices that don't support pages (example: chips containing EDID). Change-Id: Ie48087caee40c11fa241d1555fce9309ddd27b43 2013-07-27 01:44:52 +02:00			`size_t buflen, int flags);`
			`int board_info(int fd, i2c_addr_t address, int flags);`
eepromread: simple program to view eeprom contents This program uses the i2c /dev interface to read the contents of EEPROMs and display it to the user in HEX and ASCII. It also has a mode that can display data in label:value pairs. That mode is used for board detection in the rc script to start the right i2c drivers for the board. Change-Id: I0bf5b13ffab5a89533c762d6881a145cf7f14914 2013-07-15 16:29:37 +02:00
			`#endif /* __EEPROMREAD_H */`