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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* FireDTV driver (formerly known as FireSAT)
*
* Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
* Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
*/
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <media/dmxdev.h>
#include <media/dvb_demux.h>
#include <media/dvbdev.h>
#include <media/dvb_frontend.h>
#include "firedtv.h"
static int alloc_channel(struct firedtv *fdtv)
{
int i;
for (i = 0; i < 16; i++)
if (!__test_and_set_bit(i, &fdtv->channel_active))
break;
return i;
}
static void collect_channels(struct firedtv *fdtv, int *pidc, u16 pid[])
{
int i, n;
for (i = 0, n = 0; i < 16; i++)
if (test_bit(i, &fdtv->channel_active))
pid[n++] = fdtv->channel_pid[i];
*pidc = n;
}
static inline void dealloc_channel(struct firedtv *fdtv, int i)
{
__clear_bit(i, &fdtv->channel_active);
}
int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct firedtv *fdtv = dvbdmxfeed->demux->priv;
int pidc, c, ret;
u16 pids[16];
switch (dvbdmxfeed->type) {
case DMX_TYPE_TS:
case DMX_TYPE_SEC:
break;
default:
dev_err(fdtv->device, "can't start dmx feed: invalid type %u\n",
dvbdmxfeed->type);
return -EINVAL;
}
if (mutex_lock_interruptible(&fdtv->demux_mutex))
return -EINTR;
if (dvbdmxfeed->type == DMX_TYPE_TS) {
switch (dvbdmxfeed->pes_type) {
case DMX_PES_VIDEO:
case DMX_PES_AUDIO:
case DMX_PES_TELETEXT:
case DMX_PES_PCR:
case DMX_PES_OTHER:
c = alloc_channel(fdtv);
break;
default:
dev_err(fdtv->device,
"can't start dmx feed: invalid pes type %u\n",
dvbdmxfeed->pes_type);
ret = -EINVAL;
goto out;
}
} else {
c = alloc_channel(fdtv);
}
if (c > 15) {
dev_err(fdtv->device, "can't start dmx feed: busy\n");
ret = -EBUSY;
goto out;
}
dvbdmxfeed->priv = (typeof(dvbdmxfeed->priv))(unsigned long)c;
fdtv->channel_pid[c] = dvbdmxfeed->pid;
collect_channels(fdtv, &pidc, pids);
if (dvbdmxfeed->pid == 8192) {
ret = avc_tuner_get_ts(fdtv);
if (ret) {
dealloc_channel(fdtv, c);
dev_err(fdtv->device, "can't get TS\n");
goto out;
}
} else {
ret = avc_tuner_set_pids(fdtv, pidc, pids);
if (ret) {
dealloc_channel(fdtv, c);
dev_err(fdtv->device, "can't set PIDs\n");
goto out;
}
}
out:
mutex_unlock(&fdtv->demux_mutex);
return ret;
}
int fdtv_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct dvb_demux *demux = dvbdmxfeed->demux;
struct firedtv *fdtv = demux->priv;
int pidc, c, ret;
u16 pids[16];
if (dvbdmxfeed->type == DMX_TYPE_TS &&
!((dvbdmxfeed->ts_type & TS_PACKET) &&
(demux->dmx.frontend->source != DMX_MEMORY_FE))) {
if (dvbdmxfeed->ts_type & TS_DECODER) {
if (dvbdmxfeed->pes_type >= DMX_PES_OTHER ||
!demux->pesfilter[dvbdmxfeed->pes_type])
return -EINVAL;
demux->pids[dvbdmxfeed->pes_type] |= 0x8000;
demux->pesfilter[dvbdmxfeed->pes_type] = NULL;
}
if (!(dvbdmxfeed->ts_type & TS_DECODER &&
dvbdmxfeed->pes_type < DMX_PES_OTHER))
return 0;
}
if (mutex_lock_interruptible(&fdtv->demux_mutex))
return -EINTR;
c = (unsigned long)dvbdmxfeed->priv;
dealloc_channel(fdtv, c);
collect_channels(fdtv, &pidc, pids);
ret = avc_tuner_set_pids(fdtv, pidc, pids);
mutex_unlock(&fdtv->demux_mutex);
return ret;
}
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
int fdtv_dvb_register(struct firedtv *fdtv, const char *name)
{
int err;
err = dvb_register_adapter(&fdtv->adapter, name,
THIS_MODULE, fdtv->device, adapter_nr);
if (err < 0)
goto fail_log;
/*DMX_TS_FILTERING | DMX_SECTION_FILTERING*/
fdtv->demux.dmx.capabilities = 0;
fdtv->demux.priv = fdtv;
fdtv->demux.filternum = 16;
fdtv->demux.feednum = 16;
fdtv->demux.start_feed = fdtv_start_feed;
fdtv->demux.stop_feed = fdtv_stop_feed;
fdtv->demux.write_to_decoder = NULL;
err = dvb_dmx_init(&fdtv->demux);
if (err)
goto fail_unreg_adapter;
fdtv->dmxdev.filternum = 16;
fdtv->dmxdev.demux = &fdtv->demux.dmx;
fdtv->dmxdev.capabilities = 0;
err = dvb_dmxdev_init(&fdtv->dmxdev, &fdtv->adapter);
if (err)
goto fail_dmx_release;
fdtv->frontend.source = DMX_FRONTEND_0;
err = fdtv->demux.dmx.add_frontend(&fdtv->demux.dmx, &fdtv->frontend);
if (err)
goto fail_dmxdev_release;
err = fdtv->demux.dmx.connect_frontend(&fdtv->demux.dmx,
&fdtv->frontend);
if (err)
goto fail_rem_frontend;
err = dvb_net_init(&fdtv->adapter, &fdtv->dvbnet, &fdtv->demux.dmx);
if (err)
goto fail_disconnect_frontend;
fdtv_frontend_init(fdtv, name);
err = dvb_register_frontend(&fdtv->adapter, &fdtv->fe);
if (err)
goto fail_net_release;
err = fdtv_ca_register(fdtv);
if (err)
dev_info(fdtv->device,
"Conditional Access Module not enabled\n");
return 0;
fail_net_release:
dvb_net_release(&fdtv->dvbnet);
fail_disconnect_frontend:
fdtv->demux.dmx.close(&fdtv->demux.dmx);
fail_rem_frontend:
fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
fail_dmxdev_release:
dvb_dmxdev_release(&fdtv->dmxdev);
fail_dmx_release:
dvb_dmx_release(&fdtv->demux);
fail_unreg_adapter:
dvb_unregister_adapter(&fdtv->adapter);
fail_log:
dev_err(fdtv->device, "DVB initialization failed\n");
return err;
}
void fdtv_dvb_unregister(struct firedtv *fdtv)
{
fdtv_ca_release(fdtv);
dvb_unregister_frontend(&fdtv->fe);
dvb_net_release(&fdtv->dvbnet);
fdtv->demux.dmx.close(&fdtv->demux.dmx);
fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
dvb_dmxdev_release(&fdtv->dmxdev);
dvb_dmx_release(&fdtv->demux);
dvb_unregister_adapter(&fdtv->adapter);
}
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