u-boot.git/drivers/i2c/i2c-uclass.c, branch v2015.04-rc2

dm: i2c: Add a dm_ prefix to driver model bus speed functions

2015-02-12T17:35:33Z

As with i2c_read() and i2c_write(), add a dm_ prefix to the driver model versions of these functions to avoid conflicts. Signed-off-by: Simon Glass Acked-by: Heiko Schocher

dm: i2c: dts: Support an offset-len device tree property

2015-01-30T00:10:01Z

Since U-Boot can support different offset lengths (0-4 bytes), add a device tree property to specify this. This avoids hard-coding it in the driver. Signed-off-by: Simon Glass

dm: i2c: Move slave details to child platdata

2015-01-30T00:09:56Z

At present we go through various contortions to store the I2C's chip address in its private data. This only exists when the chip is active so must be set up when it is probed. Until the device is probed we don't actually record what address it will appear on. However, now that we can support per-child platform data, we can use that instead. This allows us to set up the address when the child is bound, and avoid the messy contortions. Unfortunately this is a fairly large change and it seems to be difficult to break it down further. Signed-off-by: Simon Glass Reviewed-by: Masahiro Yamada

dm: core: Add a flag to control sequence numbering

2015-01-30T00:09:55Z

At present we try to use the 'reg' property and device tree aliases to give devices a sequence number. The 'reg' property is often actually a memory address, so the sequence numbers thus-obtained are not useful. It would be better if the devices were just sequentially numbered in that case. In fact neither I2C nor SPI use this feature, so drop it. Some devices need us to look up an alias to number them within the uclass. Add a flag to control this, so it is not done unless it is needed. Adjust the tests to test this new behaviour. Signed-off-by: Simon Glass Reviewed-by: Masahiro Yamada

dm: i2c: Provide an offset length parameter where needed

2015-01-30T00:09:53Z

Rather than assuming that the chip offset length is 1, allow it to be provided. This allows chips that don't use the default offset length to be used (at present they are only supported by the command line 'i2c' command which sets the offset length explicitly). Signed-off-by: Simon Glass Acked-by: Heiko Schocher

dm: i2c: Rename driver model I2C functions to permit compatibility

2015-01-30T00:09:53Z

Add a dm_ prefix to driver model I2C functions so that we can keep the old ones around. This is a little unfortunate, but on reflection it is too difficult to change the API. We can undo this rename when most boards and drivers are converted to use driver model for I2C. Signed-off-by: Simon Glass

dm: i2c: Add a uclass for I2C

2014-12-11T20:18:42Z

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 Reviewed-by: Masahiro Yamada Signed-off-by: Simon Glass