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/*
*
* $Id$
*
* 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
*
*/
#include "pvrusb2-audio.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-debug.h"
#include <linux/videodev2.h>
#include <media/msp3400.h>
#include <media/v4l2-common.h>
struct pvr2_msp3400_handler {
struct pvr2_hdw *hdw;
struct pvr2_i2c_client *client;
struct pvr2_i2c_handler i2c_handler;
struct pvr2_audio_stat astat;
unsigned long stale_mask;
};
/* This function selects the correct audio input source */
static void set_stereo(struct pvr2_msp3400_handler *ctxt)
{
struct pvr2_hdw *hdw = ctxt->hdw;
struct v4l2_routing route;
pvr2_trace(PVR2_TRACE_CHIPS,"i2c msp3400 v4l2 set_stereo");
if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
struct v4l2_tuner vt;
memset(&vt,0,sizeof(vt));
vt.audmode = hdw->audiomode_val;
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_S_TUNER,&vt);
}
route.input = MSP_INPUT_DEFAULT;
route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
switch (hdw->input_val) {
case PVR2_CVAL_INPUT_TV:
break;
case PVR2_CVAL_INPUT_RADIO:
/* Assume that msp34xx also handle FM decoding, in which case
we're still using the tuner. */
/* HV: actually it is more likely to be the SCART2 input if
the ivtv experience is any indication. */
route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
break;
case PVR2_CVAL_INPUT_SVIDEO:
case PVR2_CVAL_INPUT_COMPOSITE:
/* SCART 1 input */
route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
break;
}
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
}
static int check_stereo(struct pvr2_msp3400_handler *ctxt)
{
struct pvr2_hdw *hdw = ctxt->hdw;
return (hdw->input_dirty ||
hdw->audiomode_dirty);
}
struct pvr2_msp3400_ops {
void (*update)(struct pvr2_msp3400_handler *);
int (*check)(struct pvr2_msp3400_handler *);
};
static const struct pvr2_msp3400_ops msp3400_ops[] = {
{ .update = set_stereo, .check = check_stereo},
};
static int msp3400_check(struct pvr2_msp3400_handler *ctxt)
{
unsigned long msk;
unsigned int idx;
for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]);
idx++) {
msk = 1 << idx;
if (ctxt->stale_mask & msk) continue;
if (msp3400_ops[idx].check(ctxt)) {
ctxt->stale_mask |= msk;
}
}
return ctxt->stale_mask != 0;
}
static void msp3400_update(struct pvr2_msp3400_handler *ctxt)
{
unsigned long msk;
unsigned int idx;
for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]);
idx++) {
msk = 1 << idx;
if (!(ctxt->stale_mask & msk)) continue;
ctxt->stale_mask &= ~msk;
msp3400_ops[idx].update(ctxt);
}
}
/* This reads back the current signal type */
static int get_audio_status(struct pvr2_msp3400_handler *ctxt)
{
struct v4l2_tuner vt;
int stat;
memset(&vt,0,sizeof(vt));
stat = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_G_TUNER,&vt);
if (stat < 0) return stat;
ctxt->hdw->flag_stereo = (vt.audmode & V4L2_TUNER_MODE_STEREO) != 0;
ctxt->hdw->flag_bilingual =
(vt.audmode & V4L2_TUNER_MODE_LANG2) != 0;
return 0;
}
static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt)
{
ctxt->client->handler = NULL;
ctxt->hdw->audio_stat = NULL;
kfree(ctxt);
}
static unsigned int pvr2_msp3400_describe(struct pvr2_msp3400_handler *ctxt,
char *buf,unsigned int cnt)
{
return scnprintf(buf,cnt,"handler: pvrusb2-audio v4l2");
}
const static struct pvr2_i2c_handler_functions msp3400_funcs = {
.detach = (void (*)(void *))pvr2_msp3400_detach,
.check = (int (*)(void *))msp3400_check,
.update = (void (*)(void *))msp3400_update,
.describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_msp3400_describe,
};
int pvr2_i2c_msp3400_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
{
struct pvr2_msp3400_handler *ctxt;
if (hdw->audio_stat) return 0;
if (cp->handler) return 0;
ctxt = kmalloc(sizeof(*ctxt),GFP_KERNEL);
if (!ctxt) return 0;
memset(ctxt,0,sizeof(*ctxt));
ctxt->i2c_handler.func_data = ctxt;
ctxt->i2c_handler.func_table = &msp3400_funcs;
ctxt->client = cp;
ctxt->hdw = hdw;
ctxt->astat.ctxt = ctxt;
ctxt->astat.status = (int (*)(void *))get_audio_status;
ctxt->astat.detach = (void (*)(void *))pvr2_msp3400_detach;
ctxt->stale_mask = (1 << (sizeof(msp3400_ops)/
sizeof(msp3400_ops[0]))) - 1;
cp->handler = &ctxt->i2c_handler;
hdw->audio_stat = &ctxt->astat;
pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x msp3400 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: ***
*/
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