1 files changed, 260 insertions, 0 deletions

diff --git a/drivers/media/dvb/firewire/firedtv-ci.c b/drivers/media/dvb/firewire/firedtv-ci.c
new file mode 100644
index 000000000000..eeb80d0ea3ff
--- /dev/null
+++ b/drivers/media/dvb/firewire/firedtv-ci.c
@@ -0,0 +1,260 @@
+/*
+ * 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;
+}
+
+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;
+}
+
+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)
+{
+        struct firedtv_tuner_status stat;
+        struct ca_slot_info *slot = arg;
+
+        if (avc_tuner_status(fdtv, &stat))
+                return -EFAULT;
+
+        if (slot->num != 0)
+                return -EFAULT;
+
+        slot->type = CA_CI;
+        slot->flags = fdtv_get_ca_flags(&stat);
+        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)
+{
+        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:
+                if (avc_tuner_status(fdtv, &stat))
+                        err = -EFAULT;
+                else 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 = -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 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 = -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;
+        struct firedtv_tuner_status stat;
+        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:
+                dev_info(fdtv->device, "unhandled CA ioctl %u\n", cmd);
+                err = -EOPNOTSUPP;
+        }
+
+        /* FIXME Is this necessary? */
+        avc_tuner_status(fdtv, &stat);
+
+        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)
+{
+        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);
+
+        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;
+}
+
+void fdtv_ca_release(struct firedtv *fdtv)
+{
+        if (fdtv->cadev)
+                dvb_unregister_device(fdtv->cadev);
+}