Release 4.11 drivers/media/firewire/firedtv-ci.c

/*
 * 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/device.h>
#include <linux/dvb/ca.h>
#include <linux/fs.h>
#include <linux/module.h>

#include <dvbdev.h>

#include "firedtv.h"


#define EN50221_TAG_APP_INFO_ENQUIRY	0x9f8020

#define EN50221_TAG_CA_INFO_ENQUIRY	0x9f8030

#define EN50221_TAG_CA_PMT		0x9f8032

#define EN50221_TAG_ENTER_MENU		0x9f8022



static int fdtv_ca_ready(struct firedtv_tuner_status *stat)
{
	return stat->ca_initialization_status	== 1 &&
	       stat->ca_error_flag		== 0 &&
	       stat->ca_dvb_flag		== 1 &&
	       stat->ca_module_present_status	== 1;
}

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Henrik Kurelid
24
66.67%
1
33.33%
Stefan Richter
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1
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static int fdtv_get_ca_flags(struct firedtv_tuner_status *stat)
{
	int flags = 0;

	if (stat->ca_module_present_status == 1)
		flags |= CA_CI_MODULE_PRESENT;
	if (stat->ca_initialization_status == 1 &&
	    stat->ca_error_flag            == 0 &&
	    stat->ca_dvb_flag              == 1)
		flags |= CA_CI_MODULE_READY;
	return flags;
}

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Henrik Kurelid
43
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33.33%
Stefan Richter
11
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1
1.82%
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33.33%
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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;
}

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Henrik Kurelid
37
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Stefan Richter
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static int fdtv_ca_get_slot_info(struct firedtv *fdtv, void *arg)
{
	struct firedtv_tuner_status stat;
	struct ca_slot_info *slot = arg;
	int err;

	err = avc_tuner_status(fdtv, &stat);
	if (err)
		return err;

	if (slot->num != 0)
		return -EACCES;

	slot->type = CA_CI;
	slot->flags = fdtv_get_ca_flags(&stat);
	return 0;
}

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Henrik Kurelid
47
61.04%
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Stefan Richter
25
32.47%
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5
6.49%
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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);
}

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Henrik Kurelid
29
78.38%
1
33.33%
Rambaldi
4
10.81%
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Stefan Richter
4
10.81%
1
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static int fdtv_ca_info(struct firedtv *fdtv, void *arg)
{
	struct ca_msg *reply = arg;

	return avc_ca_info(fdtv, reply->msg, &reply->length);
}

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Henrik Kurelid
29
78.38%
1
33.33%
Stefan Richter
4
10.81%
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4
10.81%
1
33.33%
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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);
}

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Henrik Kurelid
29
78.38%
1
33.33%
Rambaldi
4
10.81%
1
33.33%
Stefan Richter
4
10.81%
1
33.33%
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static int fdtv_ca_get_msg(struct firedtv *fdtv, void *arg)
{
	struct firedtv_tuner_status stat;
	int err;

	switch (fdtv->ca_last_command) {
	case EN50221_TAG_APP_INFO_ENQUIRY:
		err = fdtv_ca_app_info(fdtv, arg);
		break;
	case EN50221_TAG_CA_INFO_ENQUIRY:
		err = fdtv_ca_info(fdtv, arg);
		break;
	default:
		err = avc_tuner_status(fdtv, &stat);
		if (err)
			break;
		if (stat.ca_mmi == 1)
			err = fdtv_ca_get_mmi(fdtv, arg);
		else {
			dev_info(fdtv->device, "unhandled CA message 0x%08x\n",
				 fdtv->ca_last_command);
			err = -EACCES;
		}
	}
	fdtv->ca_last_command = 0;
	return err;
}

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Henrik Kurelid
81
68.07%
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Stefan Richter
25
21.01%
3
60.00%
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13
10.92%
1
20.00%
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5
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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);
}

Contributors
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Henrik Kurelid
108
91.53%
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40.00%
Stefan Richter
6
5.08%
2
40.00%
Rambaldi
4
3.39%
1
20.00%
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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 EN50221_TAG_CA_PMT:
		err = fdtv_ca_pmt(fdtv, arg);
		break;
	case EN50221_TAG_APP_INFO_ENQUIRY:
		/* handled in ca_get_msg */
		err = 0;
		break;
	case EN50221_TAG_CA_INFO_ENQUIRY:
		/* handled in ca_get_msg */
		err = 0;
		break;
	case EN50221_TAG_ENTER_MENU:
		err = avc_ca_enter_menu(fdtv);
		break;
	default:
		dev_err(fdtv->device, "unhandled CA message 0x%08x\n",
			fdtv->ca_last_command);
		err = -EACCES;
	}
	return err;
}

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Henrik Kurelid
101
77.10%
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Stefan Richter
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9
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static int fdtv_ca_ioctl(struct file *file, unsigned int cmd, void *arg)
{
	struct dvb_device *dvbdev = file->private_data;
	struct firedtv *fdtv = dvbdev->priv;
	struct firedtv_tuner_status stat;
	int err;

	switch (cmd) {
	case CA_RESET:
		err = avc_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:
		dev_info(fdtv->device, "unhandled CA ioctl %u\n", cmd);
		err = -EOPNOTSUPP;
	}

	/* FIXME Is this necessary? */
	avc_tuner_status(fdtv, &stat);

	return err;
}

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Henrik Kurelid
93
66.43%
1
16.67%
Greg Kroah-Hartman
20
14.29%
1
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Stefan Richter
15
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3
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static unsigned int fdtv_ca_io_poll(struct file *file, poll_table *wait)
{
	return POLLIN;
}

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Greg Kroah-Hartman
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static const struct file_operations fdtv_ca_fops = {
	.owner		= THIS_MODULE,
	.unlocked_ioctl	= dvb_generic_ioctl,
	.open		= dvb_generic_open,
	.release	= dvb_generic_release,
	.poll		= fdtv_ca_io_poll,
	.llseek		= noop_llseek,
};


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)
{
	struct firedtv_tuner_status stat;
	int err;

	if (avc_tuner_status(fdtv, &stat))
		return -EINVAL;

	if (!fdtv_ca_ready(&stat))
		return -EFAULT;

	err = dvb_register_device(&fdtv->adapter, &fdtv->cadev,
				  &fdtv_ca, fdtv, DVB_DEVICE_CA, 0);

	if (stat.ca_application_info == 0)
		dev_err(fdtv->device, "CaApplicationInfo is not set\n");
	if (stat.ca_date_time_request == 1)
		avc_ca_get_time_date(fdtv, &fdtv->ca_time_interval);

	return err;
}

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Henrik Kurelid
38
35.85%
1
16.67%
Stefan Richter
29
27.36%
2
33.33%
Greg Kroah-Hartman
26
24.53%
1
16.67%
Rambaldi
11
10.38%
1
16.67%
Mauro Carvalho Chehab
2
1.89%
1
16.67%
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void fdtv_ca_release(struct firedtv *fdtv)
{
	dvb_unregister_device(fdtv->cadev);
}
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Greg Kroah-Hartman
13
76.47%
1
50.00%
Rambaldi
4
23.53%
1
50.00%
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17
100.00%
2
100.00%

Overall Contributors
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CommitProp
Henrik Kurelid
664
61.54%
2
16.67%
Stefan Richter
189
17.52%
4
33.33%
Greg Kroah-Hartman
137
12.70%
1
8.33%
Rambaldi
80
7.41%
1
8.33%
Arnd Bergmann
6
0.56%
2
16.67%
Mauro Carvalho Chehab
2
0.19%
1
8.33%
Alexey Dobriyan
1
0.09%
1
8.33%
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1079
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12
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Directory: drivers/media/firewire

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