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/*
* c8sectpfe-common.c - C8SECTPFE STi DVB driver
*
* Copyright (c) STMicroelectronics 2015
*
* Author: Peter Griffin <peter.griffin@linaro.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, or (at your option) any later version.
*/
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dvb/dmx.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/wait.h>
#include "dmxdev.h"
#include "dvbdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "dvb_net.h"
#include "c8sectpfe-common.h"
#include "c8sectpfe-core.h"
#include "c8sectpfe-dvb.h"
static int register_dvb(struct stdemux *demux, struct dvb_adapter *adap,
void *start_feed, void *stop_feed,
struct c8sectpfei *fei)
{
int result;
demux->dvb_demux.dmx.capabilities = DMX_TS_FILTERING |
DMX_SECTION_FILTERING |
DMX_MEMORY_BASED_FILTERING;
demux->dvb_demux.priv = demux;
demux->dvb_demux.filternum = C8SECTPFE_MAXCHANNEL;
demux->dvb_demux.feednum = C8SECTPFE_MAXCHANNEL;
demux->dvb_demux.start_feed = start_feed;
demux->dvb_demux.stop_feed = stop_feed;
demux->dvb_demux.write_to_decoder = NULL;
result = dvb_dmx_init(&demux->dvb_demux);
if (result < 0) {
dev_err(fei->dev, "dvb_dmx_init failed (errno = %d)\n",
result);
goto err_dmx;
}
demux->dmxdev.filternum = demux->dvb_demux.filternum;
demux->dmxdev.demux = &demux->dvb_demux.dmx;
demux->dmxdev.capabilities = 0;
result = dvb_dmxdev_init(&demux->dmxdev, adap);
if (result < 0) {
dev_err(fei->dev, "dvb_dmxdev_init failed (errno = %d)\n",
result);
goto err_dmxdev;
}
demux->hw_frontend.source = DMX_FRONTEND_0 + demux->tsin_index;
result = demux->dvb_demux.dmx.add_frontend(&demux->dvb_demux.dmx,
&demux->hw_frontend);
if (result < 0) {
dev_err(fei->dev, "add_frontend failed (errno = %d)\n", result);
goto err_fe_hw;
}
demux->mem_frontend.source = DMX_MEMORY_FE;
result = demux->dvb_demux.dmx.add_frontend(&demux->dvb_demux.dmx,
&demux->mem_frontend);
if (result < 0) {
dev_err(fei->dev, "add_frontend failed (%d)\n", result);
goto err_fe_mem;
}
result = demux->dvb_demux.dmx.connect_frontend(&demux->dvb_demux.dmx,
&demux->hw_frontend);
if (result < 0) {
dev_err(fei->dev, "connect_frontend (%d)\n", result);
goto err_fe_con;
}
return 0;
err_fe_con:
demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx,
&demux->mem_frontend);
err_fe_mem:
demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx,
&demux->hw_frontend);
err_fe_hw:
dvb_dmxdev_release(&demux->dmxdev);
err_dmxdev:
dvb_dmx_release(&demux->dvb_demux);
err_dmx:
return result;
}
static void unregister_dvb(struct stdemux *demux)
{
demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx,
&demux->mem_frontend);
demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx,
&demux->hw_frontend);
dvb_dmxdev_release(&demux->dmxdev);
dvb_dmx_release(&demux->dvb_demux);
}
static struct c8sectpfe *c8sectpfe_create(struct c8sectpfei *fei,
void *start_feed,
void *stop_feed)
{
struct c8sectpfe *c8sectpfe;
int result;
int i, j;
short int ids[] = { -1 };
c8sectpfe = kzalloc(sizeof(struct c8sectpfe), GFP_KERNEL);
if (!c8sectpfe)
goto err1;
mutex_init(&c8sectpfe->lock);
c8sectpfe->device = fei->dev;
result = dvb_register_adapter(&c8sectpfe->adapter, "STi c8sectpfe",
THIS_MODULE, fei->dev, ids);
if (result < 0) {
dev_err(fei->dev, "dvb_register_adapter failed (errno = %d)\n",
result);
goto err2;
}
c8sectpfe->adapter.priv = fei;
for (i = 0; i < fei->tsin_count; i++) {
c8sectpfe->demux[i].tsin_index = i;
c8sectpfe->demux[i].c8sectpfei = fei;
result = register_dvb(&c8sectpfe->demux[i], &c8sectpfe->adapter,
start_feed, stop_feed, fei);
if (result < 0) {
dev_err(fei->dev,
"register_dvb feed=%d failed (errno = %d)\n",
result, i);
/* we take a all or nothing approach */
for (j = 0; j < i; j++)
unregister_dvb(&c8sectpfe->demux[j]);
goto err3;
}
}
c8sectpfe->num_feeds = fei->tsin_count;
return c8sectpfe;
err3:
dvb_unregister_adapter(&c8sectpfe->adapter);
err2:
kfree(c8sectpfe);
err1:
return NULL;
};
static void c8sectpfe_delete(struct c8sectpfe *c8sectpfe)
{
int i;
if (!c8sectpfe)
return;
for (i = 0; i < c8sectpfe->num_feeds; i++)
unregister_dvb(&c8sectpfe->demux[i]);
dvb_unregister_adapter(&c8sectpfe->adapter);
kfree(c8sectpfe);
};
void c8sectpfe_tuner_unregister_frontend(struct c8sectpfe *c8sectpfe,
struct c8sectpfei *fei)
{
int n;
struct channel_info *tsin;
for (n = 0; n < fei->tsin_count; n++) {
tsin = fei->channel_data[n];
if (tsin && tsin->frontend) {
dvb_unregister_frontend(tsin->frontend);
dvb_frontend_detach(tsin->frontend);
}
if (tsin && tsin->i2c_adapter)
i2c_put_adapter(tsin->i2c_adapter);
if (tsin && tsin->i2c_client) {
if (tsin->i2c_client->dev.driver->owner)
module_put(tsin->i2c_client->dev.driver->owner);
i2c_unregister_device(tsin->i2c_client);
}
}
c8sectpfe_delete(c8sectpfe);
};
int c8sectpfe_tuner_register_frontend(struct c8sectpfe **c8sectpfe,
struct c8sectpfei *fei,
void *start_feed,
void *stop_feed)
{
struct channel_info *tsin;
struct dvb_frontend *frontend;
int n, res;
*c8sectpfe = c8sectpfe_create(fei, start_feed, stop_feed);
if (!*c8sectpfe)
return -ENOMEM;
for (n = 0; n < fei->tsin_count; n++) {
tsin = fei->channel_data[n];
res = c8sectpfe_frontend_attach(&frontend, *c8sectpfe, tsin, n);
if (res)
goto err;
res = dvb_register_frontend(&c8sectpfe[0]->adapter, frontend);
if (res < 0) {
dev_err(fei->dev, "dvb_register_frontend failed (%d)\n",
res);
goto err;
}
tsin->frontend = frontend;
}
return 0;
err:
c8sectpfe_tuner_unregister_frontend(*c8sectpfe, fei);
return res;
}
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