Re: [PATCH v2 0/4] ACPI / gpio: Updates to properties
From: Andy Shevchenko
Date: Fri Oct 07 2016 - 13:10:42 EST
On Thu, Sep 29, 2016 at 4:39 PM, Mika Westerberg
> This series brings couple of useful GPIO related properties from Device
> Tree to ACPI _DSD device properties:
> - Names for GPIO lines
> - GPIO hogging
> - Holes in GPIO property lists
> We are using these to get Intel Galileo better supported in the mainline
> kernel (but these may be useful for other boards as well). For example SPI
> chip select on Galileo is connected to a GPIO line so we need to be able to
> describe it in ACPI, and at the same time allow native chip selects.
> GPIO hogging can be used to set initial state of certain GPIOs available on
> the headers regardless of the BIOS settings (which may be wrong as it knows
> nothing about which devices have been connected).
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
> The previous version can be found here:
> Changes from v1:
> - Drop patch [1/5] as it has been applied already.
> - Move patch [4/5] to be the first.
> - Rename acpi_data_get_property_reference() to __acpi_node_get_property_reference().
> - Drop acpi_node_get_property_reference() as it is not necessary anymore.
> - Add static inline wrapper acpi_node_get_property_reference() that
> calls the previous passing MAX_ACPI_REFERENCE_ARGS to support existing
> Mika Westerberg (4):
> ACPI / property: Allow holes in reference properties
> ACPI / gpio: Add support for naming GPIOs
> ACPI / gpio: Add hogging support
> ACPI / gpio: Allow holes in list of GPIOs for a device
> Documentation/acpi/gpio-properties.txt | 62 ++++++++++++++
> drivers/acpi/property.c | 117 +++++++++++++++-----------
> drivers/gpio/gpiolib-acpi.c | 147 ++++++++++++++++++++++++++++++---
> include/linux/acpi.h | 22 ++++-
> 4 files changed, 285 insertions(+), 63 deletions(-)
With Best Regards,