diff options
Diffstat (limited to 'drivers/media/dvb/firewire/firedtv-ci.c')
| -rw-r--r-- | drivers/media/dvb/firewire/firedtv-ci.c | 261 |
1 files changed, 261 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..6d87926b8bfe --- /dev/null +++ b/drivers/media/dvb/firewire/firedtv-ci.c @@ -0,0 +1,261 @@ +/* + * 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); +} |