1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _IR_I2C
3 #define _IR_I2C
4 
5 #include <media/rc-core.h>
6 
7 #define DEFAULT_POLLING_INTERVAL	100	/* ms */
8 
9 struct IR_i2c;
10 
11 struct IR_i2c {
12 	char		       *ir_codes;
13 	struct i2c_client      *c;
14 	struct rc_dev          *rc;
15 
16 	/* Used to avoid fast repeating */
17 	unsigned char          old;
18 
19 	u32                    polling_interval; /* in ms */
20 
21 	struct delayed_work    work;
22 	char                   phys[32];
23 	int                    (*get_key)(struct IR_i2c *ir,
24 					  enum rc_proto *protocol,
25 					  u32 *scancode, u8 *toggle);
26 	/* tx */
27 	struct i2c_client      *tx_c;
28 	struct mutex	       lock;	/* do not poll Rx during Tx */
29 	unsigned int	       carrier;
30 	unsigned int	       duty_cycle;
31 };
32 
33 enum ir_kbd_get_key_fn {
34 	IR_KBD_GET_KEY_CUSTOM = 0,
35 	IR_KBD_GET_KEY_PIXELVIEW,
36 	IR_KBD_GET_KEY_HAUP,
37 	IR_KBD_GET_KEY_KNC1,
38 	IR_KBD_GET_KEY_FUSIONHDTV,
39 	IR_KBD_GET_KEY_HAUP_XVR,
40 	IR_KBD_GET_KEY_AVERMEDIA_CARDBUS,
41 };
42 
43 /* Can be passed when instantiating an ir_video i2c device */
44 struct IR_i2c_init_data {
45 	char			*ir_codes;
46 	const char		*name;
47 	u64			type; /* RC_PROTO_BIT_RC5, etc */
48 	u32			polling_interval; /* 0 means DEFAULT_POLLING_INTERVAL */
49 
50 	/*
51 	 * Specify either a function pointer or a value indicating one of
52 	 * ir_kbd_i2c's internal get_key functions
53 	 */
54 	int                    (*get_key)(struct IR_i2c *ir,
55 					  enum rc_proto *protocol,
56 					  u32 *scancode, u8 *toggle);
57 	enum ir_kbd_get_key_fn internal_get_key_func;
58 
59 	struct rc_dev		*rc_dev;
60 };
61 #endif
62