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* i2c_eeprom: Add reading supportmario.six@gdsys.cc2016-07-22-8/+31
| | | | | | | | | | | | | | This patch implements the reading functionality for the generic I2C EEPROM driver, which was just a non-functional stub until now. Since the page size will be of importance for the writing support, we add suitable members to the private data structure to keep track of it. Compatibility strings for a range of at24c* chips are added. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de>
* i2c_eeprom: include <linux/err.h> to fix build errorMasahiro Yamada2015-01-05-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/misc/i2c_eeprom.c fails to build unless CONFIG_FIT_SIGNATURE is defined. CC drivers/misc/i2c_eeprom.o drivers/misc/i2c_eeprom.c: In function 'i2c_eeprom_read': drivers/misc/i2c_eeprom.c:15:10: error: 'ENODEV' undeclared (first use in this function) drivers/misc/i2c_eeprom.c:15:10: note: each undeclared identifier is reported only once for each function it appears in drivers/misc/i2c_eeprom.c: In function 'i2c_eeprom_write': drivers/misc/i2c_eeprom.c:21:10: error: 'ENODEV' undeclared (first use in this function) drivers/misc/i2c_eeprom.c:22:1: warning: control reaches end of non-void function [-Wreturn-type] drivers/misc/i2c_eeprom.c: In function 'i2c_eeprom_read': drivers/misc/i2c_eeprom.c:16:1: warning: control reaches end of non-void function [-Wreturn-type] make[2]: *** [drivers/misc/i2c_eeprom.o] Error 1 make[1]: *** [drivers/misc] Error 2 make: *** [drivers] Error 2 By the way, Sandbox (enabling CONFIG_FIT_SIGNATURE) is luckily working depending on it. Sandbox includes include/asm-generic/errno.h from include/errno.h from include/u-boot/rsa-checksum.h from include/image.h from include/common.h from drivers/misc/i2c_eeprom.c Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: Add a simple EEPROM driverSimon Glass2014-12-11-0/+51
There seem to be a few EEPROM drivers around - perhaps we should have a single standard one? This simple driver is used for sandbox testing, but could be pressed into more active service. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>