On Friday 3 July 2020 15:07:56 CEST Linus Walleij wrote:
>
> The code has the functionality to insert the GPIO lines using
> the global GPIO numbers through module parameters.
>
> As we are clearly deprecating the use of global GPIO numbers
> look up the GPIO descriptors from the device instead. This
> usually falls back to device hardware descriptions using e.g.
> device tree or ACPI. This device clearly supports device
> tree when used over SPI for example.
>
> For example, this can be supplied in the device tree like so:
>
> wfx@0x01 {
> compatible = "silabs,wf200";
> reset-gpios = <&gpio0 1>;
> wakeup-gpios = <&gpio0 2>;
> };
>
> Cc: Jérôme Pouiller <[email protected]>
> Signed-off-by: Linus Walleij <[email protected]>
> ---
> ChangeLog v4->v5:
> - Make the wakeup GPIO optional.
> ChangeLog v3->v4:
> - Finally figured out how to compile this by selecting SPI
> host and deselecting MMC host.
> - Initialize the reset GPIO as OUT_LOW
> - Initialize the wakeup GPIO as OUT_LOW
> - Drop one more desc_to_gpio()
> - Update the warning if GPIO is not found.
> ChangeLog v2->v3:
> - ERR_CAST not PTR_CAST
> ChangeLog v1->v2:
> - Fixed a cast and a variable name.
> - I still don't know how to compile this but hey the zeroday
> robot does.
> ---
> drivers/staging/wfx/bus_spi.c | 14 +++++------
> drivers/staging/wfx/main.c | 47 ++++++-----------------------------
> drivers/staging/wfx/main.h | 2 --
> 3 files changed, 14 insertions(+), 49 deletions(-)
I have not yet tested, but it looks correct.
Reviewed-by: Jérôme Pouiller <[email protected]>
--
Jérôme Pouiller
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