| 1 | /* |
| 2 | * descriptions for simple tuners. |
| 3 | */ |
| 4 | |
| 5 | #ifndef __TUNER_TYPES_H__ |
| 6 | #define __TUNER_TYPES_H__ |
| 7 | |
| 8 | /** |
| 9 | * enum param_type - type of the tuner pameters |
| 10 | * |
| 11 | * @TUNER_PARAM_TYPE_RADIO: Tuner params are for FM and/or AM radio |
| 12 | * @TUNER_PARAM_TYPE_PAL: Tuner params are for PAL color TV standard |
| 13 | * @TUNER_PARAM_TYPE_SECAM: Tuner params are for SECAM color TV standard |
| 14 | * @TUNER_PARAM_TYPE_NTSC: Tuner params are for NTSC color TV standard |
| 15 | * @TUNER_PARAM_TYPE_DIGITAL: Tuner params are for digital TV |
| 16 | */ |
| 17 | enum param_type { |
| 18 | TUNER_PARAM_TYPE_RADIO, |
| 19 | TUNER_PARAM_TYPE_PAL, |
| 20 | TUNER_PARAM_TYPE_SECAM, |
| 21 | TUNER_PARAM_TYPE_NTSC, |
| 22 | TUNER_PARAM_TYPE_DIGITAL, |
| 23 | }; |
| 24 | |
| 25 | /** |
| 26 | * struct tuner_range - define the frequencies supported by the tuner |
| 27 | * |
| 28 | * @limit: Max frequency supported by that range, in 62.5 kHz |
| 29 | * (TV) or 62.5 Hz (Radio), as defined by |
| 30 | * V4L2_TUNER_CAP_LOW. |
| 31 | * @config: Value of the band switch byte (BB) to setup this mode. |
| 32 | * @cb: Value of the CB byte to setup this mode. |
| 33 | * |
| 34 | * Please notice that digital tuners like xc3028/xc4000/xc5000 don't use |
| 35 | * those ranges, as they're defined inside the driver. This is used by |
| 36 | * analog tuners that are compatible with the "Philips way" to setup the |
| 37 | * tuners. On those devices, the tuner set is done via 4 bytes: |
| 38 | * divider byte1 (DB1), divider byte 2 (DB2), Control byte (CB) and |
| 39 | * band switch byte (BB). |
| 40 | * Some tuners also have an additional optional Auxiliary byte (AB). |
| 41 | */ |
| 42 | struct tuner_range { |
| 43 | unsigned short limit; |
| 44 | unsigned char config; |
| 45 | unsigned char cb; |
| 46 | }; |
| 47 | |
| 48 | /** |
| 49 | * struct tuner_params - Parameters to be used to setup the tuner. Those |
| 50 | * are used by drivers/media/tuners/tuner-types.c in |
| 51 | * order to specify the tuner properties. Most of |
| 52 | * the parameters are for tuners based on tda9887 IF-PLL |
| 53 | * multi-standard analog TV/Radio demodulator, with is |
| 54 | * very common on legacy analog tuners. |
| 55 | * |
| 56 | * @type: Type of the tuner parameters, as defined at |
| 57 | * enum param_type. If the tuner supports multiple |
| 58 | * standards, an array should be used, with one |
| 59 | * row per different standard. |
| 60 | * @cb_first_if_lower_freq: Many Philips-based tuners have a comment in |
| 61 | * their datasheet like |
| 62 | * "For channel selection involving band |
| 63 | * switching, and to ensure smooth tuning to the |
| 64 | * desired channel without causing unnecessary |
| 65 | * charge pump action, it is recommended to |
| 66 | * consider the difference between wanted channel |
| 67 | * frequency and the current channel frequency. |
| 68 | * Unnecessary charge pump action will result |
| 69 | * in very low tuning voltage which may drive the |
| 70 | * oscillator to extreme conditions". |
| 71 | * Set cb_first_if_lower_freq to 1, if this check |
| 72 | * is required for this tuner. I tested this for |
| 73 | * PAL by first setting the TV frequency to |
| 74 | * 203 MHz and then switching to 96.6 MHz FM |
| 75 | * radio. The result was static unless the |
| 76 | * control byte was sent first. |
| 77 | * @has_tda9887: Set to 1 if this tuner uses a tda9887 |
| 78 | * @port1_fm_high_sensitivity: Many Philips tuners use tda9887 PORT1 to select |
| 79 | * the FM radio sensitivity. If this setting is 1, |
| 80 | * then set PORT1 to 1 to get proper FM reception. |
| 81 | * @port2_fm_high_sensitivity: Some Philips tuners use tda9887 PORT2 to select |
| 82 | * the FM radio sensitivity. If this setting is 1, |
| 83 | * then set PORT2 to 1 to get proper FM reception. |
| 84 | * @fm_gain_normal: Some Philips tuners use tda9887 cGainNormal to |
| 85 | * select the FM radio sensitivity. If this |
| 86 | * setting is 1, e register will use cGainNormal |
| 87 | * instead of cGainLow. |
| 88 | * @intercarrier_mode: Most tuners with a tda9887 use QSS mode. |
| 89 | * Some (cheaper) tuners use Intercarrier mode. |
| 90 | * If this setting is 1, then the tuner needs to |
| 91 | * be set to intercarrier mode. |
| 92 | * @port1_active: This setting sets the default value for PORT1. |
| 93 | * 0 means inactive, 1 means active. Note: the |
| 94 | * actual bit value written to the tda9887 is |
| 95 | * inverted. So a 0 here means a 1 in the B6 bit. |
| 96 | * @port2_active: This setting sets the default value for PORT2. |
| 97 | * 0 means inactive, 1 means active. Note: the |
| 98 | * actual bit value written to the tda9887 is |
| 99 | * inverted. So a 0 here means a 1 in the B7 bit. |
| 100 | * @port1_invert_for_secam_lc: Sometimes PORT1 is inverted when the SECAM-L' |
| 101 | * standard is selected. Set this bit to 1 if this |
| 102 | * is needed. |
| 103 | * @port2_invert_for_secam_lc: Sometimes PORT2 is inverted when the SECAM-L' |
| 104 | * standard is selected. Set this bit to 1 if this |
| 105 | * is needed. |
| 106 | * @port1_set_for_fm_mono: Some cards require PORT1 to be 1 for mono Radio |
| 107 | * FM and 0 for stereo. |
| 108 | * @default_pll_gating_18: Select 18% (or according to datasheet 0%) |
| 109 | * L standard PLL gating, vs the driver default |
| 110 | * of 36%. |
| 111 | * @radio_if: IF to use in radio mode. Tuners with a |
| 112 | * separate radio IF filter seem to use 10.7, |
| 113 | * while those without use 33.3 for PAL/SECAM |
| 114 | * tuners and 41.3 for NTSC tuners. |
| 115 | * 0 = 10.7, 1 = 33.3, 2 = 41.3 |
| 116 | * @default_top_low: Default tda9887 TOP value in dB for the low |
| 117 | * band. Default is 0. Range: -16:+15 |
| 118 | * @default_top_mid: Default tda9887 TOP value in dB for the mid |
| 119 | * band. Default is 0. Range: -16:+15 |
| 120 | * @default_top_high: Default tda9887 TOP value in dB for the high |
| 121 | * band. Default is 0. Range: -16:+15 |
| 122 | * @default_top_secam_low: Default tda9887 TOP value in dB for SECAM-L/L' |
| 123 | * for the low band. Default is 0. Several tuners |
| 124 | * require a different TOP value for the |
| 125 | * SECAM-L/L' standards. Range: -16:+15 |
| 126 | * @default_top_secam_mid: Default tda9887 TOP value in dB for SECAM-L/L' |
| 127 | * for the mid band. Default is 0. Several tuners |
| 128 | * require a different TOP value for the |
| 129 | * SECAM-L/L' standards. Range: -16:+15 |
| 130 | * @default_top_secam_high: Default tda9887 TOP value in dB for SECAM-L/L' |
| 131 | * for the high band. Default is 0. Several tuners |
| 132 | * require a different TOP value for the |
| 133 | * SECAM-L/L' standards. Range: -16:+15 |
| 134 | * @iffreq: Intermediate frequency (IF) used by the tuner |
| 135 | * on digital mode. |
| 136 | * @count: Size of the ranges array. |
| 137 | * @ranges: Array with the frequency ranges supported by |
| 138 | * the tuner. |
| 139 | */ |
| 140 | struct tuner_params { |
| 141 | enum param_type type; |
| 142 | |
| 143 | unsigned int cb_first_if_lower_freq:1; |
| 144 | unsigned int has_tda9887:1; |
| 145 | unsigned int port1_fm_high_sensitivity:1; |
| 146 | unsigned int port2_fm_high_sensitivity:1; |
| 147 | unsigned int fm_gain_normal:1; |
| 148 | unsigned int intercarrier_mode:1; |
| 149 | unsigned int port1_active:1; |
| 150 | unsigned int port2_active:1; |
| 151 | unsigned int port1_invert_for_secam_lc:1; |
| 152 | unsigned int port2_invert_for_secam_lc:1; |
| 153 | unsigned int port1_set_for_fm_mono:1; |
| 154 | unsigned int default_pll_gating_18:1; |
| 155 | unsigned int radio_if:2; |
| 156 | signed int default_top_low:5; |
| 157 | signed int default_top_mid:5; |
| 158 | signed int default_top_high:5; |
| 159 | signed int default_top_secam_low:5; |
| 160 | signed int default_top_secam_mid:5; |
| 161 | signed int default_top_secam_high:5; |
| 162 | |
| 163 | u16 iffreq; |
| 164 | |
| 165 | unsigned int count; |
| 166 | struct tuner_range *ranges; |
| 167 | }; |
| 168 | |
| 169 | struct tunertype { |
| 170 | char *name; |
| 171 | unsigned int count; |
| 172 | struct tuner_params *params; |
| 173 | |
| 174 | u16 min; |
| 175 | u16 max; |
| 176 | u32 stepsize; |
| 177 | |
| 178 | u8 *initdata; |
| 179 | u8 *sleepdata; |
| 180 | }; |
| 181 | |
| 182 | extern struct tunertype tuners[]; |
| 183 | extern unsigned const int tuner_count; |
| 184 | |
| 185 | #endif |