[U-Boot] [PATCH v6 01/11] dm: i2c: Add a uclass for I2C

[Simon Glass]

On 10 December 2014 at 08:55, Simon Glass <sjg at chromium.org> wrote:
> The uclass implements the same operations as the current I2C framework but
> makes some changes to make it fit driver model better:
>
> - Remove the chip address from API calls
> - Remove the address length from API calls
> - Remove concept of 'current' I2C bus
> - Drop all existing init functions
>
> Acked-by: Heiko Schocher <hs at denx.de>
> Reviewed-by: Masahiro Yamada <yamada.m at jp.panasonic.com>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v6: None
> Changes in v5:
> - Add a function comment for i2c_probe_chip()
> - Add an assert for offset_len in i2c_setup_offset()
> - Add more detail to return value comment on get_buf_speed()
> - Add more detail to return value comment on xfer() method
> - Fix -INVAL typo
> - Make i2c_get_bus_speed() independent of i2c_set_bus_speed()
> - Split DM_I2C_CHIP_RD_ADDRESS into read and write varaints
> - Update comments in struct i2c_msg to allow buf to be NULL
> - Use a NULL buffer in i2c_probe_chip()
>
> Changes in v4:
> - Add a constant for I2C_MAX_OFFSET_LEN
> - Add a probe_chip() method to the uclass
> - Add chip flags to i2c_probe()
> - Add comment to i2c_setup_offset()
> - Add comments to indicate which methods are optional
> - Add comments to set_bus_speed() method
> - Adjust i2c_bind_driver() to avoid calloc()/free()
> - Drop set_offset_len() method
> - Fix copying of chip flags to message in i2c_setup_offset()
> - Fix endianness of i2c_setup_offset()
> - Fix method comment for xfer()
> - Invert return value of i2c_setup_offset()
> - Probe with a message length of 0
> - Rename i2c_generic_drv to i2c_generic_chip_drv
> - Rename i2c_read_bytewise() and implement a real one
>
> Changes in v3:
> - Add a helper to query chip flags
> - Add support for reading a byte at a time with an address for each byte
> - Change uclass <=> driver API to use a message list
> - Correct bogus address len code (was confused with chip address length)
> - Drop extra call to i2c_bind_driver() in i2c_probe()
>
> Changes in v2:
> - Add a 'deblock' method to recover an I2C bus stuck in mid-transaction
> - Add a helper function to find a chip on a particular bus number
> - Add some debugging for generic I2C device binding
> - Fix cihp typo
> - Implement generic I2C devices to allow 'i2c probe' on unknown devices
> - Return the probed device from i2c_probe()
> - Set the bus speed after the bus is probed
>
>  drivers/i2c/Makefile       |   1 +
>  drivers/i2c/i2c-uclass.c   | 466 +++++++++++++++++++++++++++++++++++++++++++++
>  include/config_fallbacks.h |   6 +
>  include/dm/uclass-id.h     |   2 +
>  include/i2c.h              | 352 ++++++++++++++++++++++++++++++++++
>  5 files changed, 827 insertions(+)
>  create mode 100644 drivers/i2c/i2c-uclass.c

Applied to u-boot-dm.