[PATCH v7 0/5] VIM3: add support for checking 'Function' button state

[Neil Armstrong]

On 18/02/2021 11:33, Marek Szyprowski wrote:
> Hi All,
> 
> This patchset adds all building blocks needed for checking the 'Function'
> button state in the boot script on Amlogic A311D based VIM3 board. This
> button is connected to the ADC line of the SoC, so it required to enable
> meson SARADC, the clocks needed for it and a simple button-adc drivers.
> 
> Once applied, one can use following commands in the boot scripts:
> -->8---
> echo Checking Func button state: \\c
> if button Function
> then
> 	echo Selected alternative boot
> 	...
> fi
> --->8---
> 
> Best regards
> Marek Szyprowski
> Samsung R&D Institute Poland
> 
> 
> Changelog:
> v7:
> - added linux,code properties to the test.dts
> 
> v6: https://lists.denx.de/pipermail/u-boot/2021-February/441039.html
> - added a simple sandbox test for adc-keys
> - use of_to_plat and adc_raw_to_uV to simplify code in the adc button driver
> 
> v5: https://lists.denx.de/pipermail/u-boot/2021-January/438751.html
> - rebased onto latest uboot-amlogic/u-boot-amlogic-next branch
> - synchronized adc-keys binding with the recent version from the Linux
>   kernel
> - updated adc-keys driver to match behavior from dt-bindings
> - added a patch for meson-saradc driver to register vdd reference supply
>   to the ADC framework
> 
> v4: https://lists.denx.de/pipermail/u-boot/2020-December/435641.html
> - rebased onto uboot-amlogic/u-boot-amlogic-next and dropped merged patches
> - added adc-keys bindings docs (copied from Linux kernel)
> - minor code adjustments pointed by Simon
> - enabled driver also in khadas-vim3l_defconfig
> 
> v3: https://lists.denx.de/pipermail/u-boot/2020-December/435072.html
> - removed 'button' env variable
> - extended kconfig and patch descriptions
> 
> v2: https://lists.denx.de/pipermail/u-boot/2020-December/434991.html
> - removed Change-Id tags
> - split defconfig changes into ADC and button related
> 
> v1: https://lists.denx.de/pipermail/u-boot/2020-December/434875.html
> - initial submission
> 
> 
> Patch summary:
> 
> Marek Szyprowski (5):
>   dt-bindings: input: adc-keys bindings documentation
>   button: add a simple Analog to Digital Converter device based button
>     driver
>   adc: meson-saradc: add support for getting reference voltage value
>   configs: khadas-vim3(l): enable Function button support
>   test: add a simple test for the adc-keys button driver
> 
>  arch/sandbox/dts/test.dts                   |  27 +++-
>  configs/khadas-vim3_defconfig               |   2 +
>  configs/khadas-vim3l_defconfig              |   2 +
>  configs/sandbox_defconfig                   |   1 +
>  doc/device-tree-bindings/input/adc-keys.txt |  67 +++++++++
>  drivers/adc/meson-saradc.c                  |  21 +++
>  drivers/button/Kconfig                      |   8 ++
>  drivers/button/Makefile                     |   1 +
>  drivers/button/button-adc.c                 | 146 ++++++++++++++++++++
>  test/dm/button.c                            |  50 ++++++-
>  10 files changed, 322 insertions(+), 3 deletions(-)
>  create mode 100644 doc/device-tree-bindings/input/adc-keys.txt
>  create mode 100644 drivers/button/button-adc.c
> 

Applying to u-boot-amlogic !

Thanks,
Neil