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