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 struct mux_state;
  18
  19 unsigned int mux_control_states(struct mux_control *mux);
  20 int __must_check mux_control_select_delay(struct mux_control *mux,
  21                                           unsigned int state,
  22                                           unsigned int delay_us);
  23 int __must_check mux_state_select_delay(struct mux_state *mstate,
  24                                         unsigned int delay_us);
  25 int __must_check mux_control_try_select_delay(struct mux_control *mux,
  26                                               unsigned int state,
  27                                               unsigned int delay_us);
  28 int __must_check mux_state_try_select_delay(struct mux_state *mstate,
  29                                             unsigned int delay_us);
  30
  31 static inline int __must_check mux_control_select(struct mux_control *mux,
  32                                                   unsigned int state)
  33 {
  34         return mux_control_select_delay(mux, state, 0);
  35 }
  36
  37 static inline int __must_check mux_state_select(struct mux_state *mstate)
  38 {
  39         return mux_state_select_delay(mstate, 0);
  40 }
  41
  42 static inline int __must_check mux_control_try_select(struct mux_control *mux,
  43                                                       unsigned int state)
  44 {
  45         return mux_control_try_select_delay(mux, state, 0);
  46 }
  47
  48 static inline int __must_check mux_state_try_select(struct mux_state *mstate)
  49 {
  50         return mux_state_try_select_delay(mstate, 0);
  51 }
  52
  53 int mux_control_deselect(struct mux_control *mux);
  54 int mux_state_deselect(struct mux_state *mstate);
  55
  56 struct mux_control *mux_control_get(struct device *dev, const char *mux_name);
  57 void mux_control_put(struct mux_control *mux);
  58
  59 struct mux_control *devm_mux_control_get(struct device *dev,
  60                                          const char *mux_name);
  61 struct mux_state *devm_mux_state_get(struct device *dev,
  62                                      const char *mux_name);
  63
  64 #endif /* _LINUX_MUX_CONSUMER_H */