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path: root/drivers/leds/leds-gpio.c
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* leds: Fix potential leds-gpio oopsUwe Kleine-König2008-03-31
| | | | | | | | | Call gpio_cansleep only after gpio_request succeeded avoiding an oops. Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
* leds: Fix led-gpio active_low default brightnessRaphael Assenat2008-02-07
| | | | | | | | | | When gpio_direction_output() is called, led_dat->active_low is used as default value. This means that the led will always be off by default. cdev.brightness should really have been set to LED_OFF unconditionally to reflect this behavior. Signed-off-by: Raphael Assenat <raph@8d.com> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
* leds: bugfixes for leds-gpioDavid Brownell2007-11-05
| | | | | | | | | | | | | | | | | | | | Three bugfixes to the leds-gpio driver, plus minor whitespace tweaks: - Do the INIT_WORK() before registering each LED, so if its trigger becomes immediately active it can schedule work without oopsing.. - Use normal registration, not platform_driver_probe(), so that devices appearing "late" (hotplug type) can still be bound. - Mark the driver remove code as "__devexit", preventing oopses when the underlying device is removed. These issues came up when using this driver with some GPIO expanders living on serial busses, which act unlike "normal" platform devices: they can appear and vanish along with the serial bus driver. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
* leds: Teach leds-gpio to handle timer-unsafe GPIOsDavid Brownell2007-07-15
| | | | | | | | Teach the new leds-gpio driver that some GPIOs can't be accessed from timer callbacks ... which is how all today's standard triggers use them. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
* leds: Add generic GPIO LED driverRaphael Assenat2007-07-15
This patch adds support for GPIO connected leds via the new GPIO framework. Information about leds (gpio, polarity, name, default trigger) is passed to the driver via platform_data. Signed-off-by: Raphael Assenat <raph@8d.com> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>