On Sun, May 8, 2016 at 4:08 PM, Christian Lamparter <chunkeey@xxxxxxxxxxxxxx> wrote: > This patch series adds device tree support for generic memory-mapped GPIOs. > The GPIO library already allows drivers and architecture support code to > reuse generic code for managing a GPIO chip. Currently, a developer has > to create a platform device "basic-mmio-gpio" and attach a bgpio_pdata > platform data structure to make use of it. However, for architectures > which rely on the device tree to enumerate devices, creating custom > platform devices is another extra step that can be avoided by having > direct support via a device tree binding. > > I initially came across this patch [0] from Álvaro Fernández Rojas, > while looking for an easy way to add support for the GPIO of my > WD MyBook Live [1] (APM82181). His generic approach patch allowed > me to easily get the GPIO (and the connected LEDs, buttons, gpiohogs) > up and running. Even thought, Mr. Fernandez initially developed it > for his work on the brcm63xx [2]. > > The third patch (which can be applied at a later time) moves gpio-clps711x, > gpio-ge, gpio-moxart and gpio-ts4800 into gpio-mmio.c. The old driver files > and makefile entries have been removed. The Kconfig entries for these > drivers are kept for compatibility reasons. > > And finally, the most important stat about the series: > >>> 336 insertions(+), 380 deletions(-) <<< > It still removes more lines than it adds! > > Thanks! > > [0] <https://patchwork.ozlabs.org/patch/422121/> > [1] <https://github.com/chunkeey/MBL-openwrt> > [2] <https://wiki.openwrt.org/doc/hardware/soc/soc.broadcom.bcm63xx> > FWIW: Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> > changelog: > > v7 -> v8: > - removed ngpio property parser and most flags parsers > - converted clps711x to switch case for GPIO > - retained original Kconfig syms which now select GPIO_GENERIC_PLATFORM > > v6 -> v7: > - finally made a PATCH series (based on linux-gpio devel branch) > - added Rob Herring's ACK to the dt bindings > - cc'd clps711x, gpio-ge, moxart and ts4800 authors for driver > changes. > > v5 -> v6: > - rewrote bindings and driver patch to fit the wd,mbl-gpio > - unified parser code for gpio-ge, gpio-moxart and gpio-ts4800 > - fixed gpio chip's base being overwritten with bogus "0" > - fixed compat driver crash when reload gpio-generic.ko module > - dropped already applied patches from the series > - rebased code on linus' devel tree > - moved dt bindings patch to the top of the series > > v4 -> v5: > - reverted rename of gpio-mmio.c back to gpio-generic.c > - fixed Andy Shevchenko's comments > - consolidated changes from clps711x, gpio-ge, gpio-moxart and > gpio-ts4800 into one patch. > > v3 -> v4: > - renamed gpio-generic.c to gpio-mmio.c > - changed compat. string to "linux,gpio-mmio" > - integrated Cirrus clps711x driver > - integrated GE FGPA gpio-ge driver > - integrated MOXA ART GPIO driver > - integrated TS4800 gpio driver > - reshuffled patches, reworded commits, fixed spelling errors, etc. > > Christian Lamparter (2): > gpio: dt-bindings: add wd,mbl-gpio bindings > gpio: move clps711x, moxart, ts4800 and gpio-ge into gpio-mmio > > Álvaro Fernández Rojas (1): > gpio: mmio: add DT support for memory-mapped GPIOs > > .../devicetree/bindings/gpio/wd,mbl-gpio.txt | 38 +++ > drivers/gpio/Kconfig | 16 +- > drivers/gpio/Makefile | 4 - > drivers/gpio/gpio-clps711x.c | 91 ------- > drivers/gpio/gpio-ge.c | 114 -------- > drivers/gpio/gpio-mmio.c | 288 ++++++++++++++++++++- > drivers/gpio/gpio-moxart.c | 84 ------ > drivers/gpio/gpio-ts4800.c | 81 ------ > 8 files changed, 336 insertions(+), 380 deletions(-) > create mode 100644 Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt > delete mode 100644 drivers/gpio/gpio-clps711x.c > delete mode 100644 drivers/gpio/gpio-ge.c > delete mode 100644 drivers/gpio/gpio-moxart.c > delete mode 100644 drivers/gpio/gpio-ts4800.c > > -- > 2.8.1 > -- With Best Regards, Andy Shevchenko -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
