#ifndef __TRIGGER_H_ #define __TRIGGER_H_ 1 #include "util/debug.h" #include "asm/bug.h" /* * Use trigger to model operations which need to be executed when * an event (a signal, for example) is observed. * * States and transits: * * * OFF--(on)--> READY --(hit)--> HIT * ^ | * | (ready) * | | * \_____________/ * * is_hit and is_ready are two key functions to query the state of * a trigger. is_hit means the event already happen; is_ready means the * trigger is waiting for the event. */ struct trigger { volatile enum { TRIGGER_ERROR = -2, TRIGGER_OFF = -1, TRIGGER_READY = 0, TRIGGER_HIT = 1, } state; const char *name; }; #define TRIGGER_WARN_ONCE(t, exp) \ WARN_ONCE(t->state != exp, "trigger '%s' state transist error: %d in %s()\n", \ t->name, t->state, __func__) static inline bool trigger_is_available(struct trigger *t) { return t->state >= 0; } static inline bool trigger_is_error(struct trigger *t) { return t->state <= TRIGGER_ERROR; } static inline void trigger_on(struct trigger *t) { TRIGGER_WARN_ONCE(t, TRIGGER_OFF); t->state = TRIGGER_READY; } static inline void trigger_ready(struct trigger *t) { if (!trigger_is_available(t)) return; t->state = TRIGGER_READY; } static inline void trigger_hit(struct trigger *t) { if (!trigger_is_available(t)) return; TRIGGER_WARN_ONCE(t, TRIGGER_READY); t->state = TRIGGER_HIT; } static inline void trigger_off(struct trigger *t) { if (!trigger_is_available(t)) return; t->state = TRIGGER_OFF; } static inline void trigger_error(struct trigger *t) { t->state = TRIGGER_ERROR; } static inline bool trigger_is_ready(struct trigger *t) { return t->state == TRIGGER_READY; } static inline bool trigger_is_hit(struct trigger *t) { return t->state == TRIGGER_HIT; } #define DEFINE_TRIGGER(n) \ struct trigger n = {.state = TRIGGER_OFF, .name = #n} #endif und/atmel-abdac.h?id=205321f0927ad2303e7f71767d402e0ff36a9a87'>commitdiff
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authorLokesh Vutla <lokeshvutla@ti.com>2016-11-10 10:59:15 +0530
committerMark Brown <broonie@kernel.org>2016-11-11 15:36:38 +0000
commit205321f0927ad2303e7f71767d402e0ff36a9a87 (patch)
treefc103f416e5df36a8a2a6c5d88f24f4f6c5a65bc /include/sound/atmel-abdac.h
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: lp873x: Add support for populating input supply
In order to have a proper topology of regulators for a platform, each registering regulator needs to populate supply_name field for identifying its supply's name. Add supply_name field for lp873x regulators. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/atmel-abdac.h')