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 
mux_control_select(struct mux_control * mux,unsigned int state)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 
mux_state_select(struct mux_state * mstate)37 static inline int __must_check mux_state_select(struct mux_state *mstate)
38 {
39 	return mux_state_select_delay(mstate, 0);
40 }
41 
mux_control_try_select(struct mux_control * mux,unsigned int state)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 
mux_state_try_select(struct mux_state * mstate)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 */
65