include/linux/mux/consumer.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * mux/consumer.h - definitions for the multiplexer consumer interface
   4  *
   5  * Copyright (C) 2017 Axentia Technologies AB
   6  *
   7  * Author: Peter Rosin <peda@axentia.se>
   8  */
   9
  10 #ifndef _LINUX_MUX_CONSUMER_H
  11 #define _LINUX_MUX_CONSUMER_H
  12
  13 #include <linux/compiler.h>
  14
  15 struct device;
  16 struct mux_control;
  17
  18 unsigned int mux_control_states(struct mux_control *mux);
  19 int __must_check mux_control_select_delay(struct mux_control *mux,
  20                                           unsigned int state,
  21                                           unsigned int delay_us);
  22 int __must_check mux_control_try_select_delay(struct mux_control *mux,
  23                                               unsigned int state,
  24                                               unsigned int delay_us);
  25
  26 static inline int __must_check mux_control_select(struct mux_control *mux,
  27                                                   unsigned int state)
  28 {
  29         return mux_control_select_delay(mux, state, 0);
  30 }
  31
  32 static inline int __must_check mux_control_try_select(struct mux_control *mux,
  33                                                       unsigned int state)
  34 {
  35         return mux_control_try_select_delay(mux, state, 0);
  36 }
  37
  38 int mux_control_deselect(struct mux_control *mux);
  39
  40 struct mux_control *mux_control_get(struct device *dev, const char *mux_name);
  41 void mux_control_put(struct mux_control *mux);
  42
  43 struct mux_control *devm_mux_control_get(struct device *dev,
  44                                          const char *mux_name);
  45
  46 #endif /* _LINUX_MUX_CONSUMER_H */