user/sven/linux.git/include/linux/i2c.h, branch v4.18.8

i2c: Export of_i2c_get_board_info()

2018-05-22T11:42:16Z

I3C busses have to know about all I2C devices connected on the I3C bus to properly initialize the I3C master, and I2C frames can't be sent on the bus until this initialization is done. We can't let the I2C core parse the DT and instantiate I2C devices as part of its i2c_add_adapter() procedure because, when done this way, I2C devices are directly registered to the device-model and might be attached to drivers which could in turn start sending frames on the bus, which won't work since, as said above, the bus is not yet initialized. Export of_i2c_register_device() in order to let the I3C core parse the I2C device nodes by itself and initialize the bus. Signed-off-by: Boris Brezillon Signed-off-by: Wolfram Sang

i2c: Get rid of i2c_board_info->archdata

2018-05-15T08:42:20Z

The only user of i2c_board_info->archdata is the OF parsing code and it just pass a zero-initialized object which has the same effect as leaving ->archdata to NULL since the client object is allocated with kzalloc(). Get rid of this useless field. Signed-off-by: Boris Brezillon Signed-off-by: Wolfram Sang

i2c: add i2c_get_device_id() to get the standard i2c device id

2018-03-06T09:57:59Z

Can be used during probe to double check that the probed device is what is expected. Loosely based on code from Adrian Fiergolski . Tested-by: Adrian Fiergolski Reviewed-by: Wolfram Sang Signed-off-by: Peter Rosin

i2c: add 'set_sda' to bus_recovery_info

2018-01-15T23:04:19Z

This will be needed when we want to create STOP conditions, too, later. Create the needed fields and populate them for the GPIO case if the GPIO is set to output. Tested-by: Phil Reid Signed-off-by: Wolfram Sang Reviewed-by: Linus Walleij Signed-off-by: Wolfram Sang

i2c: add identifier in declarations for i2c_bus_recovery

2018-01-15T23:04:03Z

No reason to have them undefined, so let's add them. Tested-by: Phil Reid Signed-off-by: Wolfram Sang Signed-off-by: Wolfram Sang

i2c: make kerneldoc about bus recovery more precise

2018-01-15T23:04:02Z

"Used internally" is vague. What it actually means is that those fields are populated by the core if valid GPIOs are provided. Change the comments to reflect that. Tested-by: Phil Reid Signed-off-by: Wolfram Sang Signed-off-by: Wolfram Sang

i2c: add i2c_master_{send|recv}_dmasafe

2017-12-03T20:23:38Z

Use the new helper to create variants of i2c_master_{send|recv} which mark their buffers as DMA safe. Signed-off-by: Wolfram Sang Acked-by: Jonathan Cameron Signed-off-by: Wolfram Sang

i2c: refactor i2c_master_{send_recv}

2017-12-03T20:22:29Z

Those two functions are very similar, the only differences are that one needs the I2C_M_RD flag for its message while the other one needs the buffer casted to drop the const. Introduce a generic helper which allows to specify the flags (also needed later for DMA safe variants of these calls) and let the casting be done in the inlining functions which are now calling the new helper function. Signed-off-by: Wolfram Sang Reviewed-by: Jonathan Cameron Signed-off-by: Wolfram Sang

i2c: add helpers to ease DMA handling

2017-12-03T19:47:44Z

One helper checks if DMA is suitable and optionally creates a bounce buffer, if not. The other function returns the bounce buffer and makes sure the data is properly copied back to the message. Reviewed-by: Jonathan Cameron Signed-off-by: Wolfram Sang Signed-off-by: Wolfram Sang

i2c: remove legacy integer scl/sda gpio for recovery

2017-11-27T17:40:01Z

Remove all reference to code related to using integer based ids for scl/sda gpio for bus recovery. All in tree drivers are now using the gpio descriptors to specific the required gpios. Reviewed-by: Andy Shevchenko Signed-off-by: Phil Reid Reviewed-by: Jarkko Nikula Signed-off-by: Wolfram Sang