Hi ! 2016-02-01 15:46 GMT+01:00 Rob Herring <robh@xxxxxxxxxx>: > On Sun, Jan 31, 2016 at 04:33:00PM +0100, Jean-Michel Hautbois wrote: >> Some I2C devices have multiple addresses assigned, for example each address >> corresponding to a different internal register map page of the device. >> So far drivers which need support for this have handled this with a driver >> specific and non-generic implementation, e.g. passing the additional address >> via platform data. >> >> This patch provides a new helper function called i2c_new_secondary_device() >> which is intended to provide a generic way to get the secondary address >> as well as instantiate a struct i2c_client for the secondary address. >> >> The function expects a pointer to the primary i2c_client, a name >> for the secondary address and an optional default address. The name is used >> as a handle to specify which secondary address to get. >> >> The default address is used as a fallback in case no secondary address >> was explicitly specified. In case no secondary address and no default >> address were specified the function returns NULL. >> >> For now the function only supports look-up of the secondary address >> from devicetree, but it can be extended in the future >> to for example support board files and/or ACPI. >> >> Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@xxxxxxxxxxxx> >> --- >> v2: adding some DT bindings documentation (more than one year later...) >> >> Documentation/devicetree/bindings/i2c/i2c.txt | 7 +++++ > > Acked-by: Rob Herring <robh@xxxxxxxxxx> > >> drivers/i2c/i2c-core.c | 42 +++++++++++++++++++++++++++ >> include/linux/i2c.h | 5 ++++ >> 3 files changed, 54 insertions(+) Thanks Rob for your ack. What is the future of this patch ? I know the merge window is opened, so it will not be integrated now, but could be in the next version ? Thanks, JM -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
