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 <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);