Searched hist:"1892 e87a" (Results 1 – 2 of 2) sorted by relevance
/openbmc/linux/arch/powerpc/boot/dts/ |
H A D | warp.dts | 1892e87a Tue Sep 27 01:03:25 CDT 2022 Dmitry Torokhov <dmitry.torokhov@gmail.com> powerpc/warp: switch to using gpiod API
This switches PIKA Warp away from legacy gpio API and to newer gpiod API, so that we can eventually deprecate the former.
Because LEDs are normally driven by leds-gpio driver, but the platform code also wants to access the LEDs during thermal shutdown, and gpiod API does not allow locating GPIO without requesting it, the platform code is now responsible for locating GPIOs through device tree and requesting them. It then constructs platform data for leds-gpio platform device and registers it. This allows platform code to retain access to LED GPIO descriptors and use them when needed.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YzKSLcrYmV5kjyeX@google.com
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/openbmc/linux/arch/powerpc/platforms/44x/ |
H A D | warp.c | 1892e87a Tue Sep 27 01:03:25 CDT 2022 Dmitry Torokhov <dmitry.torokhov@gmail.com> powerpc/warp: switch to using gpiod API
This switches PIKA Warp away from legacy gpio API and to newer gpiod API, so that we can eventually deprecate the former.
Because LEDs are normally driven by leds-gpio driver, but the platform code also wants to access the LEDs during thermal shutdown, and gpiod API does not allow locating GPIO without requesting it, the platform code is now responsible for locating GPIOs through device tree and requesting them. It then constructs platform data for leds-gpio platform device and registers it. This allows platform code to retain access to LED GPIO descriptors and use them when needed.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YzKSLcrYmV5kjyeX@google.com
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