| /* |
| * 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 <media/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_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; |
| 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; |
| } |
| |
| 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); |
| } |
| |
| static int fdtv_ca_info(struct firedtv *fdtv, void *arg) |
| { |
| struct ca_msg *reply = arg; |
| |
| return avc_ca_info(fdtv, reply->msg, &reply->length); |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| static unsigned int fdtv_ca_io_poll(struct file *file, poll_table *wait) |
| { |
| return POLLIN; |
| } |
| |
| 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; |
| } |
| |
| void fdtv_ca_release(struct firedtv *fdtv) |
| { |
| dvb_unregister_device(fdtv->cadev); |
| } |