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i2c: slave: rework the slave API

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After more discussion, brave users, and additional datasheet evaluation,
some API updates for the new I2C slave framework became imminent. The
slave events now get some easier to understand naming. Also, the event
handling has been simplified to only need a single call to the slave
callback when an action by the backend is required.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2015-03-23 09:26:36 +01:00 • committed by Wolfram Sang
parent 4a7a08226d
commit 5b77d162a3
3 changed files with 14 additions and 16 deletions
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8
include/linux/i2c.h
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@ -253,10 +253,10 @@ static inline void i2c_set_clientdata(struct i2c_client *dev, void *data)
#if IS_ENABLED(CONFIG_I2C_SLAVE)
enum i2c_slave_event {
I2C_SLAVE_REQ_READ_START,
I2C_SLAVE_REQ_READ_END,
I2C_SLAVE_REQ_WRITE_START,
I2C_SLAVE_REQ_WRITE_END,
I2C_SLAVE_READ_REQUESTED,
I2C_SLAVE_WRITE_REQUESTED,
I2C_SLAVE_READ_PROCESSED,
I2C_SLAVE_WRITE_RECEIVED,
I2C_SLAVE_STOP,
};