On Tue, Sep 27, 2016 at 05:48:45PM +0200, Neil Armstrong wrote:
> Since the I2C sx150x GPIO expander driver uses platform_data to manage
> the pins configurations, rewrite the driver as a pinctrl driver using
> pinconf to get/set pin configurations from DT or debugfs.
>
> The pinctrl driver is functionnally equivalent as the gpio-only driver
> and can use DT for pinconf. The platform_data confirmation is dropped.
>
> This patchset removed the gpio-only driver and selects the Pinctrl driver
> config instead. This patchset also migrates the gpio dt-bindings to pinctrl
> and add the pinctrl optional properties.
>
> The driver was tested with a SX1509 device on a BeagleBone black with
> interrupt support and on an X86_64 machine over an I2C to USB converter.
>
> Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
> ---
> This is a fixed version that builds and runs on non-OF platforms and on
> arm based OF. The GPIO version is removed and the bindings are also moved
> to the pinctrl bindings.
>
> One remaining question, should i2c_driver remove be implemented ?
> It would be quite hard to implement due to the interrupt controller.
>
> Changes since v1 at
> http://lkml.kernel.org/r/1473166599-29266-1-git-send-email-narmstr...@baylibre.com:
> - Fix Kconfig descriptions on pinctrl and gpio
> - Fix Kconfig dependency
> - Remove oscio support for non-789 devices
> - correct typo in dt bindings
> - remove probe reset for non-789 devices
>
> Changes since RFC at
> http://lkml.kernel.org/r/1472130692-14404-1-git-send-email-narmstr...@baylibre.com:
> - Put #ifdef CONFIG_OF/CONFIG_OF_GPIO to remove OF code for non-of platforms
> - No more rely on OF_GPIO config
> - Moved and enhanced bindings to pinctrl bindings
> - Removed gpio-sx150x.c
> - Temporary select PINCTRL_SX150X when GPIO_SX150X
> - Temporary mark GPIO_SX150X as deprecated
>
>
> .../gpio-sx150x.txt => pinctrl/pinctrl-sx150x.txt} | 46 +-
Acked-by: Rob Herring <r...@kernel.org>
> drivers/gpio/Kconfig | 13 +-
> drivers/gpio/Makefile | 1 -
> drivers/pinctrl/Kconfig | 14 +
> drivers/pinctrl/Makefile | 1 +
> .../gpio-sx150x.c => pinctrl/pinctrl-sx150x.c} | 1179
> ++++++++++++--------
> 6 files changed, 782 insertions(+), 472 deletions(-)
> rename Documentation/devicetree/bindings/{gpio/gpio-sx150x.txt =>
> pinctrl/pinctrl-sx150x.txt} (40%)
> rename drivers/{gpio/gpio-sx150x.c => pinctrl/pinctrl-sx150x.c} (24%)
