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1 | /* |
2 | * descriptions for simple tuners. |
3 | */ |
4 | |
5 | #ifndef __TUNER_TYPES_H__ |
6 | #define __TUNER_TYPES_H__ |
7 | |
8 | enum param_type { |
9 | TUNER_PARAM_TYPE_RADIO, |
10 | TUNER_PARAM_TYPE_PAL, |
11 | TUNER_PARAM_TYPE_SECAM, |
12 | TUNER_PARAM_TYPE_NTSC, |
13 | TUNER_PARAM_TYPE_DIGITAL, |
14 | }; |
15 | |
16 | struct tuner_range { |
17 | unsigned short limit; |
18 | unsigned char config; |
19 | unsigned char cb; |
20 | }; |
21 | |
22 | struct tuner_params { |
23 | enum param_type type; |
24 | |
25 | /* Many Philips based tuners have a comment like this in their |
26 | * datasheet: |
27 | * |
28 | * For channel selection involving band switching, and to ensure |
29 | * smooth tuning to the desired channel without causing |
30 | * unnecessary charge pump action, it is recommended to consider |
31 | * the difference between wanted channel frequency and the |
32 | * current channel frequency. Unnecessary charge pump action |
33 | * will result in very low tuning voltage which may drive the |
34 | * oscillator to extreme conditions. |
35 | * |
36 | * Set cb_first_if_lower_freq to 1, if this check is |
37 | * required for this tuner. |
38 | * |
39 | * I tested this for PAL by first setting the TV frequency to |
40 | * 203 MHz and then switching to 96.6 MHz FM radio. The result was |
41 | * static unless the control byte was sent first. |
42 | */ |
43 | unsigned int cb_first_if_lower_freq:1; |
44 | /* Set to 1 if this tuner uses a tda9887 */ |
45 | unsigned int has_tda9887:1; |
46 | /* Many Philips tuners use tda9887 PORT1 to select the FM radio |
47 | sensitivity. If this setting is 1, then set PORT1 to 1 to |
48 | get proper FM reception. */ |
49 | unsigned int port1_fm_high_sensitivity:1; |
50 | /* Some Philips tuners use tda9887 PORT2 to select the FM radio |
51 | sensitivity. If this setting is 1, then set PORT2 to 1 to |
52 | get proper FM reception. */ |
53 | unsigned int port2_fm_high_sensitivity:1; |
54 | /* Some Philips tuners use tda9887 cGainNormal to select the FM radio |
55 | sensitivity. If this setting is 1, e register will use cGainNormal |
56 | instead of cGainLow. */ |
57 | unsigned int fm_gain_normal:1; |
58 | /* Most tuners with a tda9887 use QSS mode. Some (cheaper) tuners |
59 | use Intercarrier mode. If this setting is 1, then the tuner |
60 | needs to be set to intercarrier mode. */ |
61 | unsigned int intercarrier_mode:1; |
62 | /* This setting sets the default value for PORT1. |
63 | 0 means inactive, 1 means active. Note: the actual bit |
64 | value written to the tda9887 is inverted. So a 0 here |
65 | means a 1 in the B6 bit. */ |
66 | unsigned int port1_active:1; |
67 | /* This setting sets the default value for PORT2. |
68 | 0 means inactive, 1 means active. Note: the actual bit |
69 | value written to the tda9887 is inverted. So a 0 here |
70 | means a 1 in the B7 bit. */ |
71 | unsigned int port2_active:1; |
72 | /* Sometimes PORT1 is inverted when the SECAM-L' standard is selected. |
73 | Set this bit to 1 if this is needed. */ |
74 | unsigned int port1_invert_for_secam_lc:1; |
75 | /* Sometimes PORT2 is inverted when the SECAM-L' standard is selected. |
76 | Set this bit to 1 if this is needed. */ |
77 | unsigned int port2_invert_for_secam_lc:1; |
78 | /* Some cards require PORT1 to be 1 for mono Radio FM and 0 for stereo. */ |
79 | unsigned int port1_set_for_fm_mono:1; |
80 | /* Select 18% (or according to datasheet 0%) L standard PLL gating, |
81 | vs the driver default of 36%. */ |
82 | unsigned int default_pll_gating_18:1; |
83 | /* IF to use in radio mode. Tuners with a separate radio IF filter |
84 | seem to use 10.7, while those without use 33.3 for PAL/SECAM tuners |
85 | and 41.3 for NTSC tuners. 0 = 10.7, 1 = 33.3, 2 = 41.3 */ |
86 | unsigned int radio_if:2; |
87 | /* Default tda9887 TOP value in dB for the low band. Default is 0. |
88 | Range: -16:+15 */ |
89 | signed int default_top_low:5; |
90 | /* Default tda9887 TOP value in dB for the mid band. Default is 0. |
91 | Range: -16:+15 */ |
92 | signed int default_top_mid:5; |
93 | /* Default tda9887 TOP value in dB for the high band. Default is 0. |
94 | Range: -16:+15 */ |
95 | signed int default_top_high:5; |
96 | /* Default tda9887 TOP value in dB for SECAM-L/L' for the low band. |
97 | Default is 0. Several tuners require a different TOP value for |
98 | the SECAM-L/L' standards. Range: -16:+15 */ |
99 | signed int default_top_secam_low:5; |
100 | /* Default tda9887 TOP value in dB for SECAM-L/L' for the mid band. |
101 | Default is 0. Several tuners require a different TOP value for |
102 | the SECAM-L/L' standards. Range: -16:+15 */ |
103 | signed int default_top_secam_mid:5; |
104 | /* Default tda9887 TOP value in dB for SECAM-L/L' for the high band. |
105 | Default is 0. Several tuners require a different TOP value for |
106 | the SECAM-L/L' standards. Range: -16:+15 */ |
107 | signed int default_top_secam_high:5; |
108 | |
109 | u16 iffreq; |
110 | |
111 | unsigned int count; |
112 | struct tuner_range *ranges; |
113 | }; |
114 | |
115 | struct tunertype { |
116 | char *name; |
117 | unsigned int count; |
118 | struct tuner_params *params; |
119 | |
120 | u16 min; |
121 | u16 max; |
122 | u32 stepsize; |
123 | |
124 | u8 *initdata; |
125 | u8 *sleepdata; |
126 | }; |
127 | |
128 | extern struct tunertype tuners[]; |
129 | extern unsigned const int tuner_count; |
130 | |
131 | #endif |
132 |
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