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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250610-gpiochip-set-rv-gpio-v1-5-3a9a3c1472ff@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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coreGPIO, which the "hard" core in PolarFire SoC is based on, has
different offsets for inp/outp. Add some match_data handling to account
for the differences.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20241113-jovial-atlantic-cd07f05eb2e5@spud
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add a driver to support the Polarfire SoC gpio controller. Interrupt
controller support is unavailable for now and will be added at a later
date.
Signed-off-by: Lewis Hanly <lewis.hanly@microchip.com>
Co-developed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241104-tiny-evaluate-9336020b4b6a@spud
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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