2 * descriptions for simple tuners.
5 #ifndef __TUNER_TYPES_H__
6 #define __TUNER_TYPES_H__
9 TUNER_PARAM_TYPE_RADIO
, \
10 TUNER_PARAM_TYPE_PAL
, \
11 TUNER_PARAM_TYPE_SECAM
, \
22 /* Many Philips based tuners have a comment like this in their
25 * For channel selection involving band switching, and to ensure
26 * smooth tuning to the desired channel without causing
27 * unnecessary charge pump action, it is recommended to consider
28 * the difference between wanted channel frequency and the
29 * current channel frequency. Unnecessary charge pump action
30 * will result in very low tuning voltage which may drive the
31 * oscillator to extreme conditions.
33 * Set cb_first_if_lower_freq to 1, if this check is
34 * required for this tuner.
36 * I tested this for PAL by first setting the TV frequency to
37 * 203 MHz and then switching to 96.6 MHz FM radio. The result was
38 * static unless the control byte was sent first.
40 unsigned int cb_first_if_lower_freq
:1;
41 unsigned char config
; /* to be moved into struct tuner_range for dvb-pll merge */
44 struct tuner_range
*ranges
;
49 struct tuner_params
*params
;
52 extern struct tunertype tuners
[];
53 extern unsigned const int tuner_count
;