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/*
* pvrusb2-dvb.c - linux-dvb api interface to the pvrusb2 driver.
*
* Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
*
* 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 <linux/kthread.h>
#include "dvbdev.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-hdw.h"
#include "pvrusb2-dvb.h"
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
static int pvr2_dvb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
{
struct pvr2_dvb_adapter *adap = dvbdmxfeed->demux->priv;
int newfeedcount, ret = 0;
if (adap == NULL)
return -ENODEV;
mutex_lock(&adap->lock);
newfeedcount = adap->feedcount + (onoff ? 1 : -1);
if (newfeedcount == 0) {
printk(KERN_DEBUG "stop feeding\n");
ret = kthread_stop(adap->thread);
adap->thread = NULL;
}
adap->feedcount = newfeedcount;
if (adap->feedcount == onoff && adap->feedcount > 0) {
if (NULL != adap->thread)
goto fail;
printk(KERN_DEBUG "start feeding\n");
if (IS_ERR(adap->thread)) {
ret = PTR_ERR(adap->thread);
adap->thread = NULL;
}
//ret = newfeedcount;
}
fail:
mutex_unlock(&adap->lock);
return ret;
}
static int pvr2_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
printk(KERN_DEBUG "start pid: 0x%04x, feedtype: %d\n",
dvbdmxfeed->pid, dvbdmxfeed->type);
return pvr2_dvb_ctrl_feed(dvbdmxfeed, 1);
}
static int pvr2_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
printk(KERN_DEBUG "stop pid: 0x%04x, feedtype: %d\n",
dvbdmxfeed->pid, dvbdmxfeed->type);
return pvr2_dvb_ctrl_feed(dvbdmxfeed, 0);
}
static int pvr2_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
{
/* TO DO: This function will call into the core and request for
* input to be set to 'dtv' if (acquire) and if it isn't set already.
*
* If (!acquire) then we should do nothing -- don't switch inputs
* again unless the analog side of the driver requests the bus.
*/
return 0;
}
static int pvr2_dvb_adapter_init(struct pvr2_dvb_adapter *adap)
{
int ret;
ret = dvb_register_adapter(&adap->dvb_adap, "pvrusb2-dvb",
THIS_MODULE/*&hdw->usb_dev->owner*/,
&adap->pvr->hdw->usb_dev->dev,
adapter_nr);
if (ret < 0) {
err("dvb_register_adapter failed: error %d", ret);
goto err;
}
adap->dvb_adap.priv = adap;
adap->demux.dmx.capabilities = DMX_TS_FILTERING |
DMX_SECTION_FILTERING |
DMX_MEMORY_BASED_FILTERING;
adap->demux.priv = adap;
adap->demux.filternum = 256;
adap->demux.feednum = 256;
adap->demux.start_feed = pvr2_dvb_start_feed;
adap->demux.stop_feed = pvr2_dvb_stop_feed;
adap->demux.write_to_decoder = NULL;
ret = dvb_dmx_init(&adap->demux);
if (ret < 0) {
err("dvb_dmx_init failed: error %d", ret);
goto err_dmx;
}
adap->dmxdev.filternum = adap->demux.filternum;
adap->dmxdev.demux = &adap->demux.dmx;
adap->dmxdev.capabilities = 0;
ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap);
if (ret < 0) {
err("dvb_dmxdev_init failed: error %d", ret);
goto err_dmx_dev;
}
dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
adap->digital_up = 1;
return 0;
err_dmx_dev:
dvb_dmx_release(&adap->demux);
err_dmx:
dvb_unregister_adapter(&adap->dvb_adap);
err:
return ret;
}
static int pvr2_dvb_adapter_exit(struct pvr2_dvb_adapter *adap)
{
if (adap->digital_up) {
printk(KERN_DEBUG "unregistering DVB devices\n");
dvb_net_release(&adap->dvb_net);
adap->demux.dmx.close(&adap->demux.dmx);
dvb_dmxdev_release(&adap->dmxdev);
dvb_dmx_release(&adap->demux);
dvb_unregister_adapter(&adap->dvb_adap);
adap->digital_up = 0;
}
return 0;
}
static int pvr2_dvb_frontend_init(struct pvr2_dvb_adapter *adap)
{
struct pvr2_dvb_props *dvb_props = adap->pvr->hdw->hdw_desc->dvb_props;
if (dvb_props == NULL) {
err("fe_props not defined!");
return -EINVAL;
}
if (dvb_props->frontend_attach == NULL) {
err("frontend_attach not defined!");
return -EINVAL;
}
if ((dvb_props->frontend_attach(adap) == 0) && (adap->fe)) {
if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
err("frontend registration failed!");
dvb_frontend_detach(adap->fe);
adap->fe = NULL;
return -ENODEV;
}
if (dvb_props->tuner_attach)
dvb_props->tuner_attach(adap);
if (adap->fe->ops.analog_ops.standby)
adap->fe->ops.analog_ops.standby(adap->fe);
/* Ensure all frontends negotiate bus access */
adap->fe->ops.ts_bus_ctrl = pvr2_dvb_bus_ctrl;
} else {
err("no frontend was attached!");
return -ENODEV;
}
return 0;
}
static int pvr2_dvb_frontend_exit(struct pvr2_dvb_adapter *adap)
{
if (adap->fe != NULL) {
dvb_unregister_frontend(adap->fe);
dvb_frontend_detach(adap->fe);
}
return 0;
}
int pvr2_dvb_init(struct pvr2_context *pvr)
{
int ret = 0;
pvr->hdw->dvb.pvr = pvr;
mutex_init(&pvr->hdw->dvb.lock);
ret = pvr2_dvb_adapter_init(&pvr->hdw->dvb);
if (ret < 0)
goto fail;
ret = pvr2_dvb_frontend_init(&pvr->hdw->dvb);
fail:
return ret;
}
int pvr2_dvb_exit(struct pvr2_context *pvr)
{
pvr2_dvb_frontend_exit(&pvr->hdw->dvb);
pvr2_dvb_adapter_exit(&pvr->hdw->dvb);
pvr->hdw->dvb.pvr = NULL;
return 0;
}
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