de03d21b90
- Tuner_params->tda988x is unused right now, so let's disable it for 2.6.16 - This is currently happening at the card level, but the plan is to move this configuration into the tuner_params configuration. Signed-off-by: Michael Krufky <mkrufky@m1k.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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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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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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};
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struct tuner_range {
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unsigned short limit;
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unsigned char cb;
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};
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struct tuner_params {
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enum param_type type;
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/* Many Philips based tuners have a comment like this in their
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* datasheet:
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*
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* For channel selection involving band switching, and to ensure
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* smooth tuning to the desired channel without causing
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* unnecessary charge pump action, it is recommended to consider
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* the difference between wanted channel frequency and the
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* current channel frequency. Unnecessary charge pump action
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* will result in very low tuning voltage which may drive the
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* oscillator to extreme conditions.
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*
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* Set cb_first_if_lower_freq to 1, if this check is
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* required for this tuner.
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*
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* I tested this for PAL by first setting the TV frequency to
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* 203 MHz and then switching to 96.6 MHz FM radio. The result was
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* static unless the control byte was sent first.
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*/
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unsigned int cb_first_if_lower_freq:1;
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unsigned char config; /* to be moved into struct tuner_range for dvb-pll merge */
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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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struct tuner_params *params;
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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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