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V4L/DVB (9072): S2API: Add DTV_API_VERSION command

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This allows application developers to query the dvb-core API version
dynamically, helping developers understand whether certain features
will be available.

Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Steven Toth 2008-09-26 00:29:49 -03:00 committed by Mauro Carvalho Chehab
parent d48cb402a1
commit eacf8d8d6b
3 changed files with 12 additions and 2 deletions
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9
drivers/media/dvb/dvb-core/dvb_frontend.c
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@ -40,6 +40,7 @@
#include "dvb_frontend.h" #include "dvb_frontend.h"
#include "dvbdev.h" #include "dvbdev.h"
#include <linux/dvb/version.h>
static int dvb_frontend_debug; static int dvb_frontend_debug;
static int dvb_shutdown_timeout; static int dvb_shutdown_timeout;
@ -836,6 +837,11 @@ struct dtv_cmds_h dtv_cmds[] = {
.set = 0, .set = 0,
.buffer = 1, .buffer = 1,
}, },
[DTV_API_VERSION] = {
.name = "DTV_API_VERSION",
.cmd = DTV_API_VERSION,
.set = 0,
},
}; };
void dtv_property_dump(struct dtv_property *tvp) void dtv_property_dump(struct dtv_property *tvp)
@ -1104,6 +1110,9 @@ int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
case DTV_TONE: case DTV_TONE:
tvp->u.data = fe->dtv_property_cache.sectone; tvp->u.data = fe->dtv_property_cache.sectone;
break; break;
case DTV_API_VERSION:
tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
break;
default: default:
r = -1; r = -1;
} }

1
include/linux/dvb/frontend.h
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@ -268,6 +268,7 @@ struct dvb_frontend_event {
#define DTV_FE_CAPABILITY 16 #define DTV_FE_CAPABILITY 16
#define DTV_DELIVERY_SYSTEM 17 #define DTV_DELIVERY_SYSTEM 17
#define DTV_API_VERSION 35
typedef enum fe_pilot { typedef enum fe_pilot {
PILOT_ON, PILOT_ON,

4
include/linux/dvb/version.h
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@ -23,7 +23,7 @@
#ifndef _DVBVERSION_H_ #ifndef _DVBVERSION_H_
#define _DVBVERSION_H_ #define _DVBVERSION_H_
#define DVB_API_VERSION 3 #define DVB_API_VERSION 5
#define DVB_API_VERSION_MINOR 2 #define DVB_API_VERSION_MINOR 0
#endif /*_DVBVERSION_H_*/ #endif /*_DVBVERSION_H_*/