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189 lines
6.9 KiB
189 lines
6.9 KiB
/* |
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* descriptions for simple tuners. |
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*/ |
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#ifndef __TUNER_TYPES_H__ |
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#define __TUNER_TYPES_H__ |
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/** |
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* enum param_type - type of the tuner pameters |
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* |
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* @TUNER_PARAM_TYPE_RADIO: Tuner params are for FM and/or AM radio |
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* @TUNER_PARAM_TYPE_PAL: Tuner params are for PAL color TV standard |
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* @TUNER_PARAM_TYPE_SECAM: Tuner params are for SECAM color TV standard |
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* @TUNER_PARAM_TYPE_NTSC: Tuner params are for NTSC color TV standard |
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* @TUNER_PARAM_TYPE_DIGITAL: Tuner params are for digital TV |
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*/ |
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enum param_type { |
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TUNER_PARAM_TYPE_RADIO, |
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TUNER_PARAM_TYPE_PAL, |
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TUNER_PARAM_TYPE_SECAM, |
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TUNER_PARAM_TYPE_NTSC, |
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TUNER_PARAM_TYPE_DIGITAL, |
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}; |
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/** |
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* struct tuner_range - define the frequencies supported by the tuner |
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* |
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* @limit: Max frequency supported by that range, in 62.5 kHz |
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* (TV) or 62.5 Hz (Radio), as defined by |
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* V4L2_TUNER_CAP_LOW. |
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* @config: Value of the band switch byte (BB) to setup this mode. |
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* @cb: Value of the CB byte to setup this mode. |
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* |
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* Please notice that digital tuners like xc3028/xc4000/xc5000 don't use |
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* those ranges, as they're defined inside the driver. This is used by |
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* analog tuners that are compatible with the "Philips way" to setup the |
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* tuners. On those devices, the tuner set is done via 4 bytes: |
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* |
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* #) divider byte1 (DB1) |
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* #) divider byte 2 (DB2) |
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* #) Control byte (CB) |
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* #) band switch byte (BB) |
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* |
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* Some tuners also have an additional optional Auxiliary byte (AB). |
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*/ |
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struct tuner_range { |
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unsigned short limit; |
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unsigned char config; |
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unsigned char cb; |
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}; |
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/** |
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* struct tuner_params - Parameters to be used to setup the tuner. Those |
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* are used by drivers/media/tuners/tuner-types.c in |
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* order to specify the tuner properties. Most of |
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* the parameters are for tuners based on tda9887 IF-PLL |
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* multi-standard analog TV/Radio demodulator, with is |
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* very common on legacy analog tuners. |
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* |
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* @type: Type of the tuner parameters, as defined at |
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* enum param_type. If the tuner supports multiple |
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* standards, an array should be used, with one |
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* row per different standard. |
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* @cb_first_if_lower_freq: Many Philips-based tuners have a comment in |
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* their datasheet like |
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* "For channel selection involving band |
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* switching, and to ensure smooth tuning to the |
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* desired channel without causing unnecessary |
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* charge pump action, it is recommended to |
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* consider the difference between wanted channel |
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* frequency and the current channel frequency. |
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* Unnecessary charge pump action will result |
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* in very low tuning voltage which may drive the |
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* oscillator to extreme conditions". |
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* Set cb_first_if_lower_freq to 1, if this check |
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* is required for this tuner. I tested this for |
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* PAL by first setting the TV frequency to |
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* 203 MHz and then switching to 96.6 MHz FM |
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* radio. The result was static unless the |
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* control byte was sent first. |
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* @has_tda9887: Set to 1 if this tuner uses a tda9887 |
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* @port1_fm_high_sensitivity: Many Philips tuners use tda9887 PORT1 to select |
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* the FM radio sensitivity. If this setting is 1, |
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* then set PORT1 to 1 to get proper FM reception. |
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* @port2_fm_high_sensitivity: Some Philips tuners use tda9887 PORT2 to select |
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* the FM radio sensitivity. If this setting is 1, |
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* then set PORT2 to 1 to get proper FM reception. |
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* @fm_gain_normal: Some Philips tuners use tda9887 cGainNormal to |
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* select the FM radio sensitivity. If this |
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* setting is 1, e register will use cGainNormal |
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* instead of cGainLow. |
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* @intercarrier_mode: Most tuners with a tda9887 use QSS mode. |
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* Some (cheaper) tuners use Intercarrier mode. |
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* If this setting is 1, then the tuner needs to |
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* be set to intercarrier mode. |
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* @port1_active: This setting sets the default value for PORT1. |
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* 0 means inactive, 1 means active. Note: the |
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* actual bit value written to the tda9887 is |
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* inverted. So a 0 here means a 1 in the B6 bit. |
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* @port2_active: This setting sets the default value for PORT2. |
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* 0 means inactive, 1 means active. Note: the |
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* actual bit value written to the tda9887 is |
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* inverted. So a 0 here means a 1 in the B7 bit. |
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* @port1_invert_for_secam_lc: Sometimes PORT1 is inverted when the SECAM-L' |
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* standard is selected. Set this bit to 1 if this |
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* is needed. |
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* @port2_invert_for_secam_lc: Sometimes PORT2 is inverted when the SECAM-L' |
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* standard is selected. Set this bit to 1 if this |
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* is needed. |
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* @port1_set_for_fm_mono: Some cards require PORT1 to be 1 for mono Radio |
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* FM and 0 for stereo. |
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* @default_pll_gating_18: Select 18% (or according to datasheet 0%) |
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* L standard PLL gating, vs the driver default |
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* of 36%. |
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* @radio_if: IF to use in radio mode. Tuners with a |
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* separate radio IF filter seem to use 10.7, |
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* while those without use 33.3 for PAL/SECAM |
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* tuners and 41.3 for NTSC tuners. |
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* 0 = 10.7, 1 = 33.3, 2 = 41.3 |
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* @default_top_low: Default tda9887 TOP value in dB for the low |
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* band. Default is 0. Range: -16:+15 |
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* @default_top_mid: Default tda9887 TOP value in dB for the mid |
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* band. Default is 0. Range: -16:+15 |
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* @default_top_high: Default tda9887 TOP value in dB for the high |
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* band. Default is 0. Range: -16:+15 |
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* @default_top_secam_low: Default tda9887 TOP value in dB for SECAM-L/L' |
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* for the low band. Default is 0. Several tuners |
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* require a different TOP value for the |
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* SECAM-L/L' standards. Range: -16:+15 |
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* @default_top_secam_mid: Default tda9887 TOP value in dB for SECAM-L/L' |
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* for the mid band. Default is 0. Several tuners |
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* require a different TOP value for the |
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* SECAM-L/L' standards. Range: -16:+15 |
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* @default_top_secam_high: Default tda9887 TOP value in dB for SECAM-L/L' |
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* for the high band. Default is 0. Several tuners |
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* require a different TOP value for the |
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* SECAM-L/L' standards. Range: -16:+15 |
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* @iffreq: Intermediate frequency (IF) used by the tuner |
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* on digital mode. |
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* @count: Size of the ranges array. |
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* @ranges: Array with the frequency ranges supported by |
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* the tuner. |
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*/ |
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struct tuner_params { |
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enum param_type type; |
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unsigned int cb_first_if_lower_freq:1; |
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unsigned int has_tda9887:1; |
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unsigned int port1_fm_high_sensitivity:1; |
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unsigned int port2_fm_high_sensitivity:1; |
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unsigned int fm_gain_normal:1; |
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unsigned int intercarrier_mode:1; |
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unsigned int port1_active:1; |
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unsigned int port2_active:1; |
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unsigned int port1_invert_for_secam_lc:1; |
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unsigned int port2_invert_for_secam_lc:1; |
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unsigned int port1_set_for_fm_mono:1; |
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unsigned int default_pll_gating_18:1; |
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unsigned int radio_if:2; |
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signed int default_top_low:5; |
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signed int default_top_mid:5; |
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signed int default_top_high:5; |
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signed int default_top_secam_low:5; |
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signed int default_top_secam_mid:5; |
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signed int default_top_secam_high:5; |
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u16 iffreq; |
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unsigned int count; |
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struct tuner_range *ranges; |
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}; |
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struct tunertype { |
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char *name; |
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unsigned int count; |
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struct tuner_params *params; |
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u16 min; |
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u16 max; |
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u32 stepsize; |
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u8 *initdata; |
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u8 *sleepdata; |
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}; |
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extern struct tunertype tuners[]; |
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extern unsigned const int tuner_count; |
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#endif
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