xref: /openbmc/linux/include/media/tveeprom.h (revision de163422)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 
3 /*
4  * tveeprom - Contains structures and functions to work with Hauppauge
5  *	      eeproms.
6  */
7 
8 #include <uapi/linux/if_ether.h>
9 
10 /**
11  * enum tveeprom_audio_processor - Specifies the type of audio processor
12  *				   used on a Hauppauge device.
13  *
14  * @TVEEPROM_AUDPROC_NONE:	No audio processor present
15  * @TVEEPROM_AUDPROC_INTERNAL:	The audio processor is internal to the
16  *				video processor
17  * @TVEEPROM_AUDPROC_MSP:	The audio processor is a MSPXXXX device
18  * @TVEEPROM_AUDPROC_OTHER:	The audio processor is another device
19  */
20 enum tveeprom_audio_processor {
21 	TVEEPROM_AUDPROC_NONE,
22 	TVEEPROM_AUDPROC_INTERNAL,
23 	TVEEPROM_AUDPROC_MSP,
24 	TVEEPROM_AUDPROC_OTHER,
25 };
26 
27 /**
28  * struct tveeprom - Contains the fields parsed from Hauppauge eeproms
29  *
30  * @has_radio:			1 if the device has radio; 0 otherwise.
31  *
32  * @has_ir:			If has_ir == 0, then it is unknown what the IR
33  *				capabilities are. Otherwise:
34  *				bit 0) 1 (= IR capabilities are known);
35  *				bit 1) IR receiver present;
36  *				bit 2) IR transmitter (blaster) present.
37  *
38  * @has_MAC_address:		0: no MAC, 1: MAC present, 2: unknown.
39  * @tuner_type:			type of the tuner (TUNER_*, as defined at
40  *				include/media/tuner.h).
41  *
42  * @tuner_formats:		Supported analog TV standards (V4L2_STD_*).
43  * @tuner_hauppauge_model:	Hauppauge's code for the device model number.
44  * @tuner2_type:		type of the second tuner (TUNER_*, as defined
45  *				at include/media/tuner.h).
46  *
47  * @tuner2_formats:		Tuner 2 supported analog TV standards
48  *				(V4L2_STD_*).
49  *
50  * @tuner2_hauppauge_model:	tuner 2 Hauppauge's code for the device model
51  *				number.
52  *
53  * @audio_processor:		analog audio decoder, as defined by enum
54  *				tveeprom_audio_processor.
55  *
56  * @decoder_processor:		Hauppauge's code for the decoder chipset.
57  *				Unused by the drivers, as they probe the
58  *				decoder based on the PCI or USB ID.
59  *
60  * @model:			Hauppauge's model number
61  *
62  * @revision:			Card revision number
63  *
64  * @serial_number:		Card's serial number
65  *
66  * @rev_str:			Card revision converted to number
67  *
68  * @MAC_address:		MAC address for the network interface
69  */
70 struct tveeprom {
71 	u32 has_radio;
72 	u32 has_ir;
73 	u32 has_MAC_address;
74 
75 	u32 tuner_type;
76 	u32 tuner_formats;
77 	u32 tuner_hauppauge_model;
78 
79 	u32 tuner2_type;
80 	u32 tuner2_formats;
81 	u32 tuner2_hauppauge_model;
82 
83 	u32 audio_processor;
84 	u32 decoder_processor;
85 
86 	u32 model;
87 	u32 revision;
88 	u32 serial_number;
89 	char rev_str[5];
90 	u8 MAC_address[ETH_ALEN];
91 };
92 
93 /**
94  * tveeprom_hauppauge_analog - Fill struct tveeprom using the contents
95  *			       of the eeprom previously filled at
96  *			       @eeprom_data field.
97  *
98  * @tvee:		Struct to where the eeprom parsed data will be filled;
99  * @eeprom_data:	Array with the contents of the eeprom_data. It should
100  *			contain 256 bytes filled with the contents of the
101  *			eeprom read from the Hauppauge device.
102  */
103 void tveeprom_hauppauge_analog(struct tveeprom *tvee,
104 			       unsigned char *eeprom_data);
105 
106 /**
107  * tveeprom_read - Reads the contents of the eeprom found at the Hauppauge
108  *		   devices.
109  *
110  * @c:		I2C client struct
111  * @eedata:	Array where the eeprom content will be stored.
112  * @len:	Size of @eedata array. If the eeprom content will be latter
113  *		be parsed by tveeprom_hauppauge_analog(), len should be, at
114  *		least, 256.
115  */
116 int tveeprom_read(struct i2c_client *c, unsigned char *eedata, int len);
117