64723b3018
Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
258 lines
6.2 KiB
C
258 lines
6.2 KiB
C
/*
|
|
*
|
|
*
|
|
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
|
|
* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
/*
|
|
|
|
This source file is specifically designed to interface with the
|
|
saa711x support that is available in the v4l available starting
|
|
with linux 2.6.15.
|
|
|
|
*/
|
|
|
|
#include "pvrusb2-video-v4l.h"
|
|
#include "pvrusb2-i2c-cmd-v4l2.h"
|
|
|
|
|
|
#include "pvrusb2-hdw-internal.h"
|
|
#include "pvrusb2-debug.h"
|
|
#include <linux/videodev2.h>
|
|
#include <media/v4l2-common.h>
|
|
#include <media/saa7115.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/slab.h>
|
|
|
|
struct pvr2_v4l_decoder {
|
|
struct pvr2_i2c_handler handler;
|
|
struct pvr2_decoder_ctrl ctrl;
|
|
struct pvr2_i2c_client *client;
|
|
struct pvr2_hdw *hdw;
|
|
unsigned long stale_mask;
|
|
};
|
|
|
|
|
|
struct routing_scheme {
|
|
const int *def;
|
|
unsigned int cnt;
|
|
};
|
|
|
|
|
|
static const int routing_scheme0[] = {
|
|
[PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
|
|
/* In radio mode, we mute the video, but point at one
|
|
spot just to stay consistent */
|
|
[PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
|
|
[PVR2_CVAL_INPUT_COMPOSITE] = SAA7115_COMPOSITE5,
|
|
[PVR2_CVAL_INPUT_SVIDEO] = SAA7115_SVIDEO2,
|
|
};
|
|
|
|
static const struct routing_scheme routing_schemes[] = {
|
|
[PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
|
|
.def = routing_scheme0,
|
|
.cnt = ARRAY_SIZE(routing_scheme0),
|
|
},
|
|
};
|
|
|
|
static void set_input(struct pvr2_v4l_decoder *ctxt)
|
|
{
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
struct v4l2_routing route;
|
|
const struct routing_scheme *sp;
|
|
unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
|
|
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c v4l2 set_input(%d)",hdw->input_val);
|
|
|
|
if ((sid < ARRAY_SIZE(routing_schemes)) &&
|
|
((sp = routing_schemes + sid) != NULL) &&
|
|
(hdw->input_val >= 0) &&
|
|
(hdw->input_val < sp->cnt)) {
|
|
route.input = sp->def[hdw->input_val];
|
|
} else {
|
|
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
|
|
"*** WARNING *** i2c v4l2 set_input:"
|
|
" Invalid routing scheme (%u) and/or input (%d)",
|
|
sid,hdw->input_val);
|
|
return;
|
|
}
|
|
|
|
route.output = 0;
|
|
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_VIDEO_ROUTING,&route);
|
|
}
|
|
|
|
|
|
static int check_input(struct pvr2_v4l_decoder *ctxt)
|
|
{
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
return hdw->input_dirty != 0;
|
|
}
|
|
|
|
|
|
static void set_audio(struct pvr2_v4l_decoder *ctxt)
|
|
{
|
|
u32 val;
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c v4l2 set_audio %d",
|
|
hdw->srate_val);
|
|
switch (hdw->srate_val) {
|
|
default:
|
|
case V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000:
|
|
val = 48000;
|
|
break;
|
|
case V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100:
|
|
val = 44100;
|
|
break;
|
|
case V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000:
|
|
val = 32000;
|
|
break;
|
|
}
|
|
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_AUDIO_CLOCK_FREQ,&val);
|
|
}
|
|
|
|
|
|
static int check_audio(struct pvr2_v4l_decoder *ctxt)
|
|
{
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
return hdw->srate_dirty != 0;
|
|
}
|
|
|
|
|
|
struct pvr2_v4l_decoder_ops {
|
|
void (*update)(struct pvr2_v4l_decoder *);
|
|
int (*check)(struct pvr2_v4l_decoder *);
|
|
};
|
|
|
|
|
|
static const struct pvr2_v4l_decoder_ops decoder_ops[] = {
|
|
{ .update = set_input, .check = check_input},
|
|
{ .update = set_audio, .check = check_audio},
|
|
};
|
|
|
|
|
|
static void decoder_detach(struct pvr2_v4l_decoder *ctxt)
|
|
{
|
|
ctxt->client->handler = NULL;
|
|
pvr2_hdw_set_decoder(ctxt->hdw,NULL);
|
|
kfree(ctxt);
|
|
}
|
|
|
|
|
|
static int decoder_check(struct pvr2_v4l_decoder *ctxt)
|
|
{
|
|
unsigned long msk;
|
|
unsigned int idx;
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(decoder_ops); idx++) {
|
|
msk = 1 << idx;
|
|
if (ctxt->stale_mask & msk) continue;
|
|
if (decoder_ops[idx].check(ctxt)) {
|
|
ctxt->stale_mask |= msk;
|
|
}
|
|
}
|
|
return ctxt->stale_mask != 0;
|
|
}
|
|
|
|
|
|
static void decoder_update(struct pvr2_v4l_decoder *ctxt)
|
|
{
|
|
unsigned long msk;
|
|
unsigned int idx;
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(decoder_ops); idx++) {
|
|
msk = 1 << idx;
|
|
if (!(ctxt->stale_mask & msk)) continue;
|
|
ctxt->stale_mask &= ~msk;
|
|
decoder_ops[idx].update(ctxt);
|
|
}
|
|
}
|
|
|
|
|
|
static int decoder_detect(struct pvr2_i2c_client *cp)
|
|
{
|
|
/* Attempt to query the decoder - let's see if it will answer */
|
|
struct v4l2_tuner vt;
|
|
int ret;
|
|
|
|
memset(&vt,0,sizeof(vt));
|
|
ret = pvr2_i2c_client_cmd(cp,VIDIOC_G_TUNER,&vt);
|
|
return ret == 0; /* Return true if it answered */
|
|
}
|
|
|
|
|
|
static void decoder_enable(struct pvr2_v4l_decoder *ctxt,int fl)
|
|
{
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c v4l2 decoder_enable(%d)",fl);
|
|
pvr2_v4l2_cmd_stream(ctxt->client,fl);
|
|
}
|
|
|
|
|
|
static unsigned int decoder_describe(struct pvr2_v4l_decoder *ctxt,char *buf,unsigned int cnt)
|
|
{
|
|
return scnprintf(buf,cnt,"handler: pvrusb2-video-v4l");
|
|
}
|
|
|
|
|
|
static const struct pvr2_i2c_handler_functions hfuncs = {
|
|
.detach = (void (*)(void *))decoder_detach,
|
|
.check = (int (*)(void *))decoder_check,
|
|
.update = (void (*)(void *))decoder_update,
|
|
.describe = (unsigned int (*)(void *,char *,unsigned int))decoder_describe,
|
|
};
|
|
|
|
|
|
int pvr2_i2c_decoder_v4l_setup(struct pvr2_hdw *hdw,
|
|
struct pvr2_i2c_client *cp)
|
|
{
|
|
struct pvr2_v4l_decoder *ctxt;
|
|
|
|
if (hdw->decoder_ctrl) return 0;
|
|
if (cp->handler) return 0;
|
|
if (!decoder_detect(cp)) return 0;
|
|
|
|
ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
|
|
if (!ctxt) return 0;
|
|
|
|
ctxt->handler.func_data = ctxt;
|
|
ctxt->handler.func_table = &hfuncs;
|
|
ctxt->ctrl.ctxt = ctxt;
|
|
ctxt->ctrl.detach = (void (*)(void *))decoder_detach;
|
|
ctxt->ctrl.enable = (void (*)(void *,int))decoder_enable;
|
|
ctxt->client = cp;
|
|
ctxt->hdw = hdw;
|
|
ctxt->stale_mask = (1 << ARRAY_SIZE(decoder_ops)) - 1;
|
|
pvr2_hdw_set_decoder(hdw,&ctxt->ctrl);
|
|
cp->handler = &ctxt->handler;
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x saa711x V4L2 handler set up",
|
|
cp->client->addr);
|
|
return !0;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
Stuff for Emacs to see, in order to encourage consistent editing style:
|
|
*** Local Variables: ***
|
|
*** mode: c ***
|
|
*** fill-column: 70 ***
|
|
*** tab-width: 8 ***
|
|
*** c-basic-offset: 8 ***
|
|
*** End: ***
|
|
*/
|