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path: root/drivers/misc/i2c_eeprom.c
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2021-01-05dm: Rename DM_GET_DRIVER() to DM_DRIVER_GET()Simon Glass1-1/+1
In the spirit of using the same base name for all of these related macros, rename this to have the operation at the end. This is not widely used so the impact is fairly small. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13dm: treewide: Rename ofdata_to_platdata() to of_to_plat()Simon Glass1-4/+4
This name is far too long. Rename it to remove the 'data' bits. This makes it consistent with the platdata->plat rename. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13dm: treewide: Rename auto_alloc_size members to be shorterSimon Glass1-2/+2
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13dm: core: Rename device_bind_ofnode() to device_bind()Simon Glass1-2/+2
This is the standard function to use when binding devices. Drop the '_ofnode' suffix to make this clear. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-08-20i2c: eeprom: Use reg property instead of offset and sizeMichal Simek1-7/+8
Remove adhoc dt binding for fixed-partition definition for i2c eeprom. fixed-partition are using reg property instead of offset/size pair. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-05-28misc: i2c_eeprom: implement different probe test eeprom offsetEugen Hristev1-1/+7
Because of this commit : 5ae84860b0 ("misc: i2c_eeprom: verify that the chip is functional at probe()") at probe time, each eeprom is tested for read at offset 0. The Atmel AT24MAC402 eeprom has different mapping. One i2c slave address is used for the lower 0x80 bytes and another i2c slave address is used for the upper 0x80 bytes. Because of this basically the i2c master sees 2 different slaves. We need the upper bytes because we read the unique MAC address from this EEPROM area. However this implies that our slave address will return error on reads from address 0x0 to 0x80. To solve this, implemented an offset field inside platform data that is by default 0 (as it is used now), but can be changed in the compatible table. The probe function will now read at this offset and use it, instead of blindly checking offset 0. This will fix the regression noticed on these EEPROMs since the commit abovementioned that introduces the probe failed issue. Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Reviewed-by: Heiko Schocher <hs@denx.de>
2020-05-18common: Drop linux/delay.h from common headerSimon Glass1-0/+1
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-03-16misc: i2c_eeprom: store pagesize instead of pagewidth in i2c_eeprom_drv_dataMasahiro Yamada1-16/+16
Associate the pagesize with compatible strings, and copy it to priv->pagesize. This is more straight-forward. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-03-16misc: i2c_eeprom: remove pagewidth field from i2c_eepromMasahiro Yamada1-5/+3
This struct member is not used in any effective way. Remove it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-02-09misc: i2c_eeprom: set offset len and chip addr offset maskRobert Beckett1-0/+35
Set the correct offset length and chip address offset mask for each device to allow correct access to total capacity of the devices. Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
2019-12-17misc: i2c_eeprom: add size queryRobert Beckett1-19/+126
Add ability to query size of eeprom device and partitions Signed-off-by: Robert Beckett <bob.beckett@collabora.com> Reviewed-by: Heiko Schocher <hs@denx.de>
2019-12-17misc: i2c_eeprom: add fixed partitions supportRobert Beckett1-0/+98
Add ability to partition eeprom via devicetree bindings Signed-off-by: Robert Beckett <bob.beckett@collabora.com> Reviewed-by: Heiko Schocher <hs@denx.de>
2019-12-02common: Move old EEPROM functions into a new headerSimon Glass1-0/+1
These functions do not use driver model but are still used. Move them to a new eeprom.h header file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-08-27misc: i2c_eeprom: verify that the chip is functional at probe()Baruch Siach1-0/+8
Read a single byte from EEPROM to verify that it is actually there. This is equivalent to Linux kernel commit 00f0ea70d2b8 ("eeprom: at24: check if the chip is functional in probe()"). Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> hs: fixed style check prefer kernel type 'u8' over 'uint8_t'
2019-04-11misc: i2c_eeprom: add eeprom write supportBaruch Siach1-1/+19
Write up to page size in each i2c transfer. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Heiko Schocher <hs@denx.de>
2019-04-11misc: i2c_eeprom: support DT pagesize propertyBaruch Siach1-0/+6
Read the page size from DT when available. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Heiko Schocher <hs@denx.de>
2019-01-26misc: i2c_eeprom: Add atmel,24c08 to the listMichal Simek1-0/+1
Linux kernel binding is using atmel,24c08 compatible string. On the other hand there is atmel,24c08a which is not listed in the kernel. Add compatible string without "a" suffix to be compatible with Linux kernel binding. These eeproms are available on several ZynqMP development boards. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini1-2/+1
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-12misc: i2c_eeprom: Add compatible for AT24MAC402Wenyou Yang1-0/+1
Add the new compatible "atmel,24mac402" to accommodate AT24MAC402. The AT24MAC402 is a 2K Serial EEPROM and the 2-Kbit memory array is internally organized as 16 pages of 16 bytes of EEPROM each. The 48-bit EUI address in the AT24MAC402 are located in the extended memory block. Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
2017-09-12misc: i2c_eeprom: Add compatible for 24AA02E48Wenyou Yang1-0/+1
Add the new compatible "microchip,24aa02e48" to accommodate 24AA02E48, the 24AA02E48 is a 2K I2C Serial EEPROM with pre-programmed globally unique, 48-bit node address, and 8-byte page size. Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
2017-06-26i2c_eeprom: add static to i2c_eeprom_std_ops/probeMasahiro Yamada1-2/+2
These are only used in drivers/mis/i2c_eeprom.c Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-05-10i2c_eeprom: add read and write functionsJonas Karlman1-6/+26
Signed-off-by: Jonas Karlman <jonas@kwiboo.se> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-22i2c_eeprom: Add reading supportmario.six@gdsys.cc1-8/+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>
2015-01-05i2c_eeprom: include <linux/err.h> to fix build errorMasahiro Yamada1-0/+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>
2014-12-11dm: Add a simple EEPROM driverSimon Glass1-0/+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>
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