qemu/hw/gpio
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
..
Makefile.objs hw/gpio: Add the emulation of gpio_key 2016-03-30 17:27:22 +01:00
gpio_key.c hw: clean up hw/hw.h includes 2016-05-19 16:42:30 +02:00
imx_gpio.c i.MX: Fix GPIO ISR register write 2016-10-28 15:51:27 +01:00
max7310.c i2c: Allow I2C devices to NAK start events 2017-01-09 11:40:20 +00:00
mpc8xxx.c hw: Clean up includes 2016-01-29 15:07:25 +00:00
omap_gpio.c hw/gpio: QOM'ify omap_gpio.c 2016-06-14 15:59:13 +01:00
pl061.c hw/gpio: QOM'ify pl061.c 2016-06-14 15:59:13 +01:00
puv3_gpio.c unicore: Clean up includes 2016-01-29 15:07:22 +00:00
zaurus.c hw/gpio: QOM'ify zaurus.c 2016-06-14 15:59:13 +01:00