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GPIO library does copy the of_node from the parent device of
the GPIO chip, there is no need to repeat this in the individual
drivers. Remove these assignment all at once.
For the details one may look into the of_gpio_dev_init() implementation.
While at it, remove duplicate parent device assignment where it is the case.
Signed-off-by: Andy Shevchenko <[email protected]>
Reviewed-By: Matti Vaittinen <[email protected]>
Signed-off-by: Bartosz Golaszewski <[email protected]>
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Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.
Signed-off-by: Nicolas Saenz Julienne <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Acked-by: Bartosz Golaszewski <[email protected]>
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It's hard for occasional GPIO code reader/writer to know if values 0/1
equal to IN or OUT. Use defined GPIO_LINE_DIRECTION_IN and
GPIO_LINE_DIRECTION_OUT to help them out.
NOTE - for gpio-amd-fch and gpio-bd9571mwv:
This commit also changes the return value for direction get to equal 1
for direction INPUT. Prior this commit these drivers might have
returned some other positive value but 1 for INPUT.
Signed-off-by: Matti Vaittinen <[email protected]>
Acked-by: Scott Branden <[email protected]>
Reviewed-by: Grygorii Strashko <[email protected]>
Reviewed-by: Michal Simek <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Acked-by: Andy Shevchenko <[email protected]>
Acked-by: William Breathitt Gray <[email protected]>
Acked-by: Kuppuswamy Sathyanarayanan <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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We're getting a reference RPi's firmware node in order to be able to
communicate with it's driver. We should decrease the reference count on
the dt node after being done with it.
Fixes: a98d90e7d588 ("gpio: raspberrypi-exp: Driver for RPi3 GPIO expander via mailbox service")
Signed-off-by: Nicolas Saenz Julienne <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Pi3 and Compute Module 3 have a GPIO expander that the
VPU communicates with.
There is a mailbox service that now allows control of this
expander, so add a kernel driver that can make use of it.
Reviewed-by: Stefan Wahren <[email protected]>
Signed-off-by: Dave Stevenson <[email protected]>
Signed-off-by: Baruch Siach <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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