The goal I'm working toward is to rid the kernel of the global GPIO numberspace. This means GPIO lines should be references by the local offset on the GPIO chip. This patch set starts to move gpio_keys toward using GPIO look-up tables instead of global GPIO numbers to find their GPIOs. As an example I did (I think) the necessary patches to convert DaVinci and i.MX to use this. There are several users also x86 platform devices. Strategy: - Merge the patch to input/keyboard/gpio_keys* to support using descriptors from board files. - Refactor the whole universe to get proper names on GPIO chips, and reference the GPIO lines with local offsets using tables, as in the example patches in this series. These can trickle in after the first patch is merged in Input. The work to be done can be seen if you type: git grep gpio_keys_platform_data - When all are refactored, remove the "gpio" and "active low" members from the platform data and delete the associated legacy GPIO handling in the input driver for gpio_keys. Posting this with the examples to get buy-in from Dmitry before I go and spend time refactoring the world. I.e. I'm happy if patch 1 gets merged, the rest I will push through ARM SoC etc, or if nothing else works (like nonresponsive maintainers) I can push it through the GPIO tree without bothering Dmitry. Linus Walleij (5): Input: gpio-keys: Support getting descriptors from board gpio: pca953x: Name the gpiochip after the I2C address ARM: davinci: Switch DA850EVM to use GPIO descriptors ARM: imx: Give all GPIO chips a unique name ARM: imx: Use GPIO descriptors for gpio_keys arch/arm/mach-davinci/board-da850-evm.c | 57 ++++++++++++++--- arch/arm/mach-imx/mach-armadillo5x0.c | 19 ++++-- arch/arm/mach-imx/mach-imx27_visstrim_m10.c | 26 ++++++-- arch/arm/mach-imx/mach-pcm037_eet.c | 52 +++++++++++---- arch/arm/mach-imx/mach-vpr200.c | 99 ++++++++++++++++++++++++----- arch/arm/mach-imx/mm-imx21.c | 12 ++-- arch/arm/mach-imx/mm-imx27.c | 12 ++-- arch/arm/mach-imx/mm-imx3.c | 12 ++-- drivers/gpio/gpio-pca953x.c | 17 ++++- drivers/input/keyboard/gpio_keys.c | 14 +++- drivers/input/keyboard/gpio_keys_polled.c | 10 +++ 11 files changed, 259 insertions(+), 71 deletions(-) -- 2.14.3 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
