aboutsummaryrefslogtreecommitdiffstats
path: root/include/media/tuner-types.h
blob: 011b4a20ee2214bc6d77cb3fd16717976cda9ec9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
/*
 * descriptions for simple tuners.
 */

#ifndef __TUNER_TYPES_H__
#define __TUNER_TYPES_H__

enum param_type {
	TUNER_PARAM_TYPE_RADIO,
	TUNER_PARAM_TYPE_PAL,
	TUNER_PARAM_TYPE_SECAM,
	TUNER_PARAM_TYPE_NTSC,
	TUNER_PARAM_TYPE_DIGITAL,
};

struct tuner_range {
	unsigned short limit;
	unsigned char config;
	unsigned char cb;
};

/**
 * struct tuner_params - Parameters to be used to setup the tuner. Those
 *			 are used by drivers/media/tuners/tuner-types.c in
 *			 order to specify the tuner properties. Most of
 *			 the parameters are for tuners based on tda9887 IF-PLL
 *			 multi-standard analog TV/Radio demodulator, with is
 *			 very common on legacy analog tuners.
 *
 * @type:			Type of the tuner parameters, as defined at
 *				enum param_type. If the tuner supports multiple
 *				standards, an array should be used, with one
 *				row per different standard.
 * @cb_first_if_lower_freq:	Many Philips-based tuners have a comment in
 *				their datasheet like
 *				"For channel selection involving band
 *				switching, and to ensure smooth tuning to the
 *				desired channel without causing unnecessary
 *				charge pump action, it is recommended to
 *				consider the difference between wanted channel
 *				frequency and the current channel frequency.
 *				Unnecessary charge pump action will result
 *				in very low tuning voltage which may drive the
 *				oscillator to extreme conditions".
 *				Set cb_first_if_lower_freq to 1, if this check
 *				is required for this tuner. I tested this for
 *				PAL by first setting the TV frequency to
 *				203 MHz and then switching to 96.6 MHz FM
 *				radio. The result was static unless the
 *				control byte was sent first.
 * @has_tda9887:		Set to 1 if this tuner uses a tda9887
 * @port1_fm_high_sensitivity:	Many Philips tuners use tda9887 PORT1 to select
 *				the FM radio sensitivity. If this setting is 1,
 *				then set PORT1 to 1 to get proper FM reception.
 * @port2_fm_high_sensitivity:	Some Philips tuners use tda9887 PORT2 to select
 *				the FM radio sensitivity. If this setting is 1,
 *				then set PORT2 to 1 to get proper FM reception.
 * @fm_gain_normal:		Some Philips tuners use tda9887 cGainNormal to
 *				select the FM radio sensitivity. If this
 *				setting is 1, e register will use cGainNormal
 *				instead of cGainLow.
 * @intercarrier_mode:		Most tuners with a tda9887 use QSS mode.
 *				Some (cheaper) tuners use Intercarrier mode.
 *				If this setting is 1, then the tuner needs to
 *				be set to intercarrier mode.
 * @port1_active:		This setting sets the default value for PORT1.
 *				0 means inactive, 1 means active. Note: the
 *				actual bit value written to the tda9887 is
 *				inverted. So a 0 here means a 1 in the B6 bit.
 * @port2_active:		This setting sets the default value for PORT2.
 *				0 means inactive, 1 means active. Note: the
 *				actual bit value written to the tda9887 is
 *				inverted. So a 0 here means a 1 in the B7 bit.
 * @port1_invert_for_secam_lc:	Sometimes PORT1 is inverted when the SECAM-L'
 *				standard is selected. Set this bit to 1 if this
 *				is needed.
 * @port2_invert_for_secam_lc:	Sometimes PORT2 is inverted when the SECAM-L'
 *				standard is selected. Set this bit to 1 if this
 *				is needed.
 * @port1_set_for_fm_mono:	Some cards require PORT1 to be 1 for mono Radio
 *				FM and 0 for stereo.
 * @default_pll_gating_18:	Select 18% (or according to datasheet 0%)
 *				L standard PLL gating, vs the driver default
 *				of 36%.
 * @radio_if:			IF to use in radio mode.  Tuners with a
 *				separate radio IF filter seem to use 10.7,
 *				while those without use 33.3 for PAL/SECAM
 *				tuners and 41.3 for NTSC tuners.
 *				0 = 10.7, 1 = 33.3, 2 = 41.3
 * @default_top_low:		Default tda9887 TOP value in dB for the low
 *				band. Default is 0. Range: -16:+15
 * @default_top_mid:		Default tda9887 TOP value in dB for the mid
 *				band. Default is 0. Range: -16:+15
 * @default_top_high:		Default tda9887 TOP value in dB for the high
 *				band. Default is 0. Range: -16:+15
 * @default_top_secam_low:	Default tda9887 TOP value in dB for SECAM-L/L'
 *				for the low band. Default is 0. Several tuners
 *				require a different TOP value for the
 *				SECAM-L/L' standards. Range: -16:+15
 * @default_top_secam_mid:	Default tda9887 TOP value in dB for SECAM-L/L'
 *				for the mid band. Default is 0. Several tuners
 *				require a different TOP value for the
 *				SECAM-L/L' standards. Range: -16:+15
 * @default_top_secam_high:	Default tda9887 TOP value in dB for SECAM-L/L'
 *				for the high band. Default is 0. Several tuners
 *				require a different TOP value for the
 *				SECAM-L/L' standards. Range: -16:+15
 * @iffreq:			Intermediate frequency (IF) used by the tuner
 *				on digital mode.
 * @count:			Size of the ranges array.
 * @ranges:			Array with the frequency ranges supported by
 *				the tuner.
 */
struct tuner_params {
	enum param_type type;

	unsigned int cb_first_if_lower_freq:1;
	unsigned int has_tda9887:1;
	unsigned int port1_fm_high_sensitivity:1;
	unsigned int port2_fm_high_sensitivity:1;
	unsigned int fm_gain_normal:1;
	unsigned int intercarrier_mode:1;
	unsigned int port1_active:1;
	unsigned int port2_active:1;
	unsigned int port1_invert_for_secam_lc:1;
	unsigned int port2_invert_for_secam_lc:1;
	unsigned int port1_set_for_fm_mono:1;
	unsigned int default_pll_gating_18:1;
	unsigned int radio_if:2;
	signed int default_top_low:5;
	signed int default_top_mid:5;
	signed int default_top_high:5;
	signed int default_top_secam_low:5;
	signed int default_top_secam_mid:5;
	signed int default_top_secam_high:5;

	u16 iffreq;

	unsigned int count;
	struct tuner_range *ranges;
};

struct tunertype {
	char *name;
	unsigned int count;
	struct tuner_params *params;

	u16 min;
	u16 max;
	u32 stepsize;

	u8 *initdata;
	u8 *sleepdata;
};

extern struct tunertype tuners[];
extern unsigned const int tuner_count;

#endif

Privacy Policy