This augments the I2C GPIO driver to use open drain emulation or hardware support for open drain from the GPIO driver. This version layers Geert Uytterhoeven's idea to use explicit sda-gpios and scl-gpios for the GPIO lines, and strongly encourage the (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) flags to be used in all device trees. We have collected ACKs from the ARM SoC maintainers and the MFD maintainer and are looking for testers to try this out. Geert Uytterhoeven (1): dt-bindings: i2c: i2c-gpio: Add support for named gpios Linus Walleij (6): i2c: gpio: Convert to use descriptors gpio: Make it possible for consumers to enforce open drain i2c: gpio: Enforce open drain through gpiolib i2c: gpio: Augment all boardfiles to use open drain i2c: gpio: Local vars in probe i2c: gpio: Add support for named gpios in DT Documentation/devicetree/bindings/i2c/i2c-gpio.txt | 32 +++- arch/arm/mach-ep93xx/core.c | 41 ++-- arch/arm/mach-ep93xx/edb93xx.c | 15 +- arch/arm/mach-ep93xx/include/mach/platform.h | 4 +- arch/arm/mach-ep93xx/simone.c | 12 +- arch/arm/mach-ep93xx/snappercl15.c | 12 +- arch/arm/mach-ep93xx/vision_ep9307.c | 7 +- arch/arm/mach-ixp4xx/avila-setup.c | 17 +- arch/arm/mach-ixp4xx/dsmg600-setup.c | 16 +- arch/arm/mach-ixp4xx/fsg-setup.c | 16 +- arch/arm/mach-ixp4xx/goramo_mlr.c | 24 +-- arch/arm/mach-ixp4xx/ixdp425-setup.c | 16 +- arch/arm/mach-ixp4xx/nas100d-setup.c | 16 +- arch/arm/mach-ixp4xx/nslu2-setup.c | 16 +- arch/arm/mach-ks8695/board-acs5k.c | 15 +- arch/arm/mach-pxa/palmz72.c | 14 +- arch/arm/mach-pxa/viper.c | 27 ++- arch/arm/mach-sa1100/simpad.c | 14 +- arch/blackfin/mach-bf533/boards/blackstamp.c | 19 +- arch/blackfin/mach-bf533/boards/ezkit.c | 18 +- arch/blackfin/mach-bf533/boards/stamp.c | 18 +- arch/blackfin/mach-bf561/boards/ezkit.c | 18 +- arch/mips/alchemy/board-gpr.c | 23 ++- arch/mips/ath79/mach-pb44.c | 16 +- drivers/gpio/gpiolib.c | 13 ++ drivers/i2c/busses/i2c-gpio.c | 213 ++++++++++----------- drivers/mfd/sm501.c | 49 ++--- include/linux/gpio/consumer.h | 6 + include/linux/i2c-gpio.h | 4 - 29 files changed, 423 insertions(+), 288 deletions(-) -- 2.13.5
