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authorMichael Krufky <mkrufky@m1k.net>2006-01-13 14:10:25 -0200
committerMauro Carvalho Chehab <mchehab@brturbo.com.br>2006-01-13 14:10:25 -0200
commit7b0ac9cdd42b254ae2ec0f6c1cc6389655e4ba96 (patch)
treec290ba6d44a608feb22e7d7af177a915419f88f3 /include/media
parentf4efb4dbf21c78939e32d96cad145421c8b5f106 (diff)
downloadop-kernel-dev-7b0ac9cdd42b254ae2ec0f6c1cc6389655e4ba96.zip
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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 <mkrufky@m1k.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/tuner-types.h41
-rw-r--r--include/media/tuner.h1
2 files changed, 42 insertions, 0 deletions
diff --git a/include/media/tuner-types.h b/include/media/tuner-types.h
new file mode 100644
index 0000000..9f6e4a9
--- /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 27cbf08..c88b506 100644
--- a/include/media/tuner.h
+++ b/include/media/tuner.h
@@ -23,6 +23,7 @@
#define _TUNER_H
#include <linux/videodev2.h>
+#include <media/tuner-types.h>
#define ADDR_UNSET (255)
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