qemu/include/hw/i2c
Corey Minyard d307c28ca9 i2c: Allow I2C devices to NAK start events
Add a return value to the event handler.  Some I2C devices will
NAK if they have no data, so allow them to do this.  This required
the following changes:

Go through all the event handlers and change them to return int
and return 0.

Modify i2c_start_transfer to terminate the transaction on a NAK.

Modify smbus handing to not assert if a NAK occurs on a second
operation, and terminate the transaction and return -1 instead.

Add some information on semantics to I2CSlaveClass.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-09 11:40:20 +00:00
..
aspeed_i2c.h i2c: add aspeed i2c controller 2016-06-06 16:59:29 +01:00
i2c-ddc.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
i2c.h i2c: Allow I2C devices to NAK start events 2017-01-09 11:40:20 +00:00
imx_i2c.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
pm_smbus.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
smbus.h smbus: return -1 if nothing found at the given address 2014-05-07 19:14:46 +03:00