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/*
* FireDTV driver (formerly known as FireSAT)
*
* Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
* Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
*
* 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/dvb/ca.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <dvbdev.h>
#include "avc.h"
#include "firedtv.h"
#include "firedtv-ci.h"
static int fdtv_ca_ready(ANTENNA_INPUT_INFO *info)
{
return info->CaInitializationStatus == 1 &&
info->CaErrorFlag == 0 &&
info->CaDvbFlag == 1 &&
info->CaModulePresentStatus == 1;
}
static int fdtv_get_ca_flags(ANTENNA_INPUT_INFO *info)
{
int flags = 0;
if (info->CaModulePresentStatus == 1)
flags |= CA_CI_MODULE_PRESENT;
if (info->CaInitializationStatus == 1 &&
info->CaErrorFlag == 0 &&
info->CaDvbFlag == 1)
flags |= CA_CI_MODULE_READY;
return flags;
}
static int fdtv_ca_reset(struct firedtv *fdtv)
{
return avc_ca_reset(fdtv) ? -EFAULT : 0;
}
static int fdtv_ca_get_caps(void *arg)
{
struct ca_caps *cap = arg;
cap->slot_num = 1;
cap->slot_type = CA_CI;
cap->descr_num = 1;
cap->descr_type = CA_ECD;
return 0;
}
static int fdtv_ca_get_slot_info(struct firedtv *fdtv, void *arg)
{
ANTENNA_INPUT_INFO info;
struct ca_slot_info *slot = arg;
if (avc_tuner_status(fdtv, &info))
return -EFAULT;
if (slot->num != 0)
return -EFAULT;
slot->type = CA_CI;
slot->flags = fdtv_get_ca_flags(&info);
return 0;
}
static int fdtv_ca_app_info(struct firedtv *fdtv, void *arg)
{
struct ca_msg *reply = arg;
return
avc_ca_app_info(fdtv, reply->msg, &reply->length) ? -EFAULT : 0;
}
static int fdtv_ca_info(struct firedtv *fdtv, void *arg)
{
struct ca_msg *reply = arg;
return avc_ca_info(fdtv, reply->msg, &reply->length) ? -EFAULT : 0;
}
static int fdtv_ca_get_mmi(struct firedtv *fdtv, void *arg)
{
struct ca_msg *reply = arg;
return
avc_ca_get_mmi(fdtv, reply->msg, &reply->length) ? -EFAULT : 0;
}
static int fdtv_ca_get_msg(struct firedtv *fdtv, void *arg)
{
ANTENNA_INPUT_INFO info;
int err;
switch (fdtv->ca_last_command) {
case TAG_APP_INFO_ENQUIRY:
err = fdtv_ca_app_info(fdtv, arg);
break;
case TAG_CA_INFO_ENQUIRY:
err = fdtv_ca_info(fdtv, arg);
break;
default:
if (avc_tuner_status(fdtv, &info))
err = -EFAULT;
else if (info.CaMmi == 1)
err = fdtv_ca_get_mmi(fdtv, arg);
else {
printk(KERN_INFO "%s: Unhandled message 0x%08X\n",
__func__, fdtv->ca_last_command);
err = -EFAULT;
}
}
fdtv->ca_last_command = 0;
return err;
}
static int fdtv_ca_pmt(struct firedtv *fdtv, void *arg)
{
struct ca_msg *msg = arg;
int data_pos;
int data_length;
int i;
data_pos = 4;
if (msg->msg[3] & 0x80) {
data_length = 0;
for (i = 0; i < (msg->msg[3] & 0x7F); i++)
data_length = (data_length << 8) + msg->msg[data_pos++];
} else {
data_length = msg->msg[3];
}
return avc_ca_pmt(fdtv, &msg->msg[data_pos], data_length) ?
-EFAULT : 0;
}
static int fdtv_ca_send_msg(struct firedtv *fdtv, void *arg)
{
struct ca_msg *msg = arg;
int err;
/* Do we need a semaphore for this? */
fdtv->ca_last_command =
(msg->msg[0] << 16) + (msg->msg[1] << 8) + msg->msg[2];
switch (fdtv->ca_last_command) {
case TAG_CA_PMT:
err = fdtv_ca_pmt(fdtv, arg);
break;
case TAG_APP_INFO_ENQUIRY:
/* handled in ca_get_msg */
err = 0;
break;
case TAG_CA_INFO_ENQUIRY:
/* handled in ca_get_msg */
err = 0;
break;
case TAG_ENTER_MENU:
err = avc_ca_enter_menu(fdtv);
break;
default:
printk(KERN_ERR "%s: Unhandled unknown message 0x%08X\n",
__func__, fdtv->ca_last_command);
err = -EFAULT;
}
return err;
}
static int fdtv_ca_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct dvb_device *dvbdev = file->private_data;
struct firedtv *fdtv = dvbdev->priv;
ANTENNA_INPUT_INFO info;
int err;
switch(cmd) {
case CA_RESET:
err = fdtv_ca_reset(fdtv);
break;
case CA_GET_CAP:
err = fdtv_ca_get_caps(arg);
break;
case CA_GET_SLOT_INFO:
err = fdtv_ca_get_slot_info(fdtv, arg);
break;
case CA_GET_MSG:
err = fdtv_ca_get_msg(fdtv, arg);
break;
case CA_SEND_MSG:
err = fdtv_ca_send_msg(fdtv, arg);
break;
default:
printk(KERN_INFO "%s: Unhandled ioctl, command: %u\n",__func__,
cmd);
err = -EOPNOTSUPP;
}
/* FIXME Is this necessary? */
avc_tuner_status(fdtv, &info);
return err;
}
static unsigned int fdtv_ca_io_poll(struct file *file, poll_table *wait)
{
return POLLIN;
}
static struct file_operations fdtv_ca_fops = {
.owner = THIS_MODULE,
.ioctl = dvb_generic_ioctl,
.open = dvb_generic_open,
.release = dvb_generic_release,
.poll = fdtv_ca_io_poll,
};
static struct dvb_device fdtv_ca = {
.users = 1,
.readers = 1,
.writers = 1,
.fops = &fdtv_ca_fops,
.kernel_ioctl = fdtv_ca_ioctl,
};
int fdtv_ca_register(struct firedtv *fdtv)
{
ANTENNA_INPUT_INFO info;
int err;
if (avc_tuner_status(fdtv, &info))
return -EINVAL;
if (!fdtv_ca_ready(&info))
return -EFAULT;
err = dvb_register_device(&fdtv->adapter, &fdtv->cadev,
&fdtv_ca, fdtv, DVB_DEVICE_CA);
if (info.CaApplicationInfo == 0)
printk(KERN_ERR "%s: CaApplicationInfo is not set.\n",
__func__);
if (info.CaDateTimeRequest == 1)
avc_ca_get_time_date(fdtv, &fdtv->ca_time_interval);
return err;
}
void fdtv_ca_release(struct firedtv *fdtv)
{
if (fdtv->cadev)
dvb_unregister_device(fdtv->cadev);
}
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