From 7b0ac9cdd42b254ae2ec0f6c1cc6389655e4ba96 Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Fri, 13 Jan 2006 14:10:25 -0200 Subject: V4L/DVB (3359): Redesign tuners struct for maximum flexibility - Tunertype struct redefined to allow one or more tuner_params structs per tuner definition, one for each video standard. - Each tuner_params struct has an element containing an arbitrary amount of tuner_ranges. (this is needed for dvb tuners - to be handled later) - A tuner_range may be referenced by multiple tuner_params structs. There are many duplicates in here. Reusing tuner_range structs, rather than defining new ones for each tuner, will cut down on memory usage, and is preferred when possible. - tunertype struct contains an element, has_tda988x. We must set this for all tunertypes that contain a tda988x chip, and then we can remove this setting from the various card structs. - Improves tuners array memory usage efficiency. - Right now, all tuners are using the first tuner_params[] array element for analog mode. In the future, we will be merging similar tuner definitions together, such that each tuner definition will have a tuner_params struct for each available video standard. At that point, the tuner_params[] array element will be chosen based on the video standard in use. Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- include/media/tuner-types.h | 41 +++++++++++++++++++++++++++++++++++++++++ include/media/tuner.h | 1 + 2 files changed, 42 insertions(+) create mode 100644 include/media/tuner-types.h (limited to 'include/media') diff --git a/include/media/tuner-types.h b/include/media/tuner-types.h new file mode 100644 index 00000000000..9f6e4a98c40 --- /dev/null +++ b/include/media/tuner-types.h @@ -0,0 +1,41 @@ +/* + * descriptions for simple tuners. + */ + +#ifndef __TUNER_TYPES_H__ +#define __TUNER_TYPES_H__ + +enum param_type { + TUNER_PARAM_TYPE_RADIO, \ + TUNER_PARAM_TYPE_PAL, \ + TUNER_PARAM_TYPE_SECAM, \ + TUNER_PARAM_TYPE_NTSC, \ + TUNER_PARAM_TYPE_ATSC, \ + TUNER_PARAM_TYPE_DVBT, \ + TUNER_PARAM_TYPE_DVBS, \ + TUNER_PARAM_TYPE_DVBC +}; + +struct tuner_range { + unsigned short limit; + unsigned char cb; +}; + +struct tuner_params { + enum param_type type; + unsigned char config; /* to be moved into struct tuner_range for dvb-pll merge */ + + unsigned int count; + struct tuner_range *ranges; +}; + +struct tunertype { + char *name; + unsigned int has_tda988x:1; + struct tuner_params *params; +}; + +extern struct tunertype tuners[]; +extern unsigned const int tuner_count; + +#endif diff --git a/include/media/tuner.h b/include/media/tuner.h index 27cbf08c931..c88b506971c 100644 --- a/include/media/tuner.h +++ b/include/media/tuner.h @@ -23,6 +23,7 @@ #define _TUNER_H #include +#include #define ADDR_UNSET (255) -- cgit v1.2.3-70-g09d2