treewide: remove references to CREDITS ...

The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: unify led trigger tables ...

Currently we have two slightly different led-trigger tables. One in the
core module, and the other one in the led-triggers module. The one in the
core module, which is used to parse the device-tree triggers, is lacking
net-rx and net-tx.

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led-trigger: Allow multiple led triggers of the same type ...

We used to have a static array of trigger types which, allows only one led
per trigger. While this is enough for panic and heartbeat, it falls short when
multiple leds are associated to the default-on trigger. The default-on trigger
is used to turn on a led statically from devicetree and may be used multiple
times.
This patch reworks the led triggers so that a trigger struct is allocated
dynamically when needed and put onto a list.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: trigger: Use led triggers ...

Since the LED framework now supports blinking/flashing, use this
functionality in the LED triggers.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: trigger: Turn of flashing leds only once ...

The current code continuously turns leds off. Preserve the current
led status so that we only turn it off once.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: trigger: use max_value to turn on led instead of hardcoded '1' ...

For PWM LEDs '1' may be really dark. Use max_value instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: triggers: fix "no previous prototype for 'trigger_init'" warning ...

Here is compiler's message:

    drivers/led/led-triggers.c:148:5: warning: no previous prototype for 'trigger_init' [-Wmissing-prototypes]
    int trigger_init(void)
        ^

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: triggers: fix crash on disabling "default-on" trigger ...

Here is a sample crash log on Ritmix RZX-50:

    barebox:/ trigger
    0: panic
    1: heartbeat
    2: net rx
    3: net tx
    4: net
    5: default on (led 0)
    barebox:/ trigger -d 5
    ...
    Ooops, TLB miss on store!

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: Add default-on trigger ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

LED: Add LED trigger support ...

This patch allows to associate LEDs with certain triggers, such
as heartbeat or network activity.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>