On Tue, 16 Sep 2014, Mika Westerberg wrote: > If an MFD device is backed by ACPI namespace, we should allow subdevice > drivers to access their corresponding ACPI companion devices through normal > means (e.g using ACPI_COMPANION()). > > This patch adds such support to the MFD core. If the MFD parent device > does not specify any ACPI _HID/_CID for the child device, the child > device will share the parent ACPI companion device. Otherwise the child > device will be assigned with the corresponding ACPI companion, if found > in the namespace below the parent. > > Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> > Reviewed-by: Darren Hart <dvhart@xxxxxxxxxxxxxxx> > --- > Lee, I tried to get rid of #ifdefs in the below patch but it wasn't > possible because we are using functions that are not available when > !CONFIG_ACPI. > > Documentation/acpi/enumeration.txt | 27 +++++++++++++++++++++++++ > drivers/mfd/mfd-core.c | 40 ++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/core.h | 3 +++ > 3 files changed, 70 insertions(+) Acked-by: Lee Jones <lee.jones@xxxxxxxxxx> -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
