[U-Boot] [PATCH V3 3/3] dm: i2c: add i2c-gpio driver

[Simon Glass]

On 31 March 2015 at 21:18, Simon Glass <sjg at chromium.org> wrote:
> On 31 March 2015 at 10:57, Przemyslaw Marczak <p.marczak at samsung.com> wrote:
>> This commit adds driver model support to software emulated i2c bus driver.
>> This driver supports kernel-style device tree bindings. Fdt properties in use:
>> - compatible - "i2c-gpio"
>> - gpios      - data and clock GPIO pin phandles
>> - delay-us   - micro seconds delay between GPIOs toggle operations,
>>                which is 1/4 of I2C speed clock period.
>>
>> Added:
>> - Config: CONFIG_DM_I2C_GPIO
>> - File: drivers/i2c/i2c-gpio.c
>> - File: doc/device-tree-bindings/i2c/i2c-gpio.txt
>>
>> Driver base code is taken from: drivers/i2c/soft-i2c.c, changes:
>> - use "i2c-gpio" naming
>> - update comments style
>> - move preprocesor macros into functions
>> - add device tree support
>> - add driver model i2c support
>> - code cleanup,
>> - add Kconfig entry
>>
>> Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
>> CC: Masahiro Yamada <yamada.masahiro at socionext.com>
>> Cc: Lukasz Majewski <l.majewski at samsung.com>
>> Cc: Mike Frysinger <vapier at gentoo.org>
>> Cc: Simon Glass <sjg at chromium.org>
>> Cc: Heiko Schocher <hs at denx.de>
>>
>> Changes V2:
>> - new file for software i2c driver: i2c-gpio.c
>> - update driver naming: use of "i2c-gpio"
>> - add full compatibility with the kernels device-tree "i2c-gpio" node
>> - fix Kconfig entry
>>
>> Changes V3:
>> - fix Kconfig entry
>> - update file header
>> - remove field "speed" from struct i2c_gpio_bus
>> - move macros to functions
>> - move duplicated routines into functions
>> - update naming with prefix "i2c_gpio_"
>> ---
>>  doc/device-tree-bindings/i2c/i2c-gpio.txt |  37 ++++
>>  drivers/i2c/Kconfig                       |   9 +
>>  drivers/i2c/Makefile                      |   1 +
>>  drivers/i2c/i2c-gpio.c                    | 345 ++++++++++++++++++++++++++++++
>>  4 files changed, 392 insertions(+)
>>  create mode 100644 doc/device-tree-bindings/i2c/i2c-gpio.txt
>>  create mode 100644 drivers/i2c/i2c-gpio.c
>
> Acked-by: Simon Glass <sjg at chromium.org>

Applied to u-boot-dm/next, thanks!