On Thu, Mar 24, 2016 at 5:11 AM, Jean-Michel Hautbois <jean-michel.hautbois@xxxxxxxxxxxx> wrote: > 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'm expecting Wolfram to pick it up. > I know the merge window is opened, so it will not be integrated now, > but could be in the next version ? I would say it is not too late for 4.6 if it was missed by accident. Rob -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
