Searched hist:257462 (Results 1 - 2 of 2) sorted by relevance
| /linux-master/include/linux/ | ||
| H A D | pwm_backlight.h | diff 257462db Wed Feb 26 22:53:34 MST 2014 Alexandre Courbot <acourbot@nvidia.com> pwm-backlight: switch to gpiod interface Switch to the new gpiod interface, which allows to handle GPIO properties such as active low transparently and removes a whole bunch of code. There are still a couple of users of this driver that rely on passing the enable GPIO number through platform data, so a fallback mechanism using a GPIO number is still available to avoid breaking them. It will be removed once current users have switched to the GPIO lookup tables provided by the gpiod interface. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com> |
| /linux-master/drivers/video/backlight/ | ||
| H A D | pwm_bl.c | diff 937222c4 Wed Aug 20 00:38:36 MDT 2014 Lothar Waßmann <LW@KARO-electronics.de> pwm-backlight: Fix bogus request for GPIO#0 when instantiated from DT commit 257462dbf3ed ("pwm-backlight: switch to gpiod interface") introduced a regression leading to acquiring a bogus GPIO-0 when configured from DT without an 'enable-gpios' property. The driver will happily accept the 0 initialized 'enable_gpio' member of the struct platform_pwm_backlight_data as valid gpio number, and request this GPIO as enable pin. In case of multiple driver instances, the second will fail to register with the error message: pwm-backlight backlight1.23: failed to request GPIO#0: -16 Fix this by setting enable_gpio in the pdata struct to -EINVAL. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> diff 257462db Wed Feb 26 22:53:34 MST 2014 Alexandre Courbot <acourbot@nvidia.com> pwm-backlight: switch to gpiod interface Switch to the new gpiod interface, which allows to handle GPIO properties such as active low transparently and removes a whole bunch of code. There are still a couple of users of this driver that rely on passing the enable GPIO number through platform data, so a fallback mechanism using a GPIO number is still available to avoid breaking them. It will be removed once current users have switched to the GPIO lookup tables provided by the gpiod interface. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com> |
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