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255 lines
5.5 KiB
255 lines
5.5 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* FireDTV driver (formerly known as FireSAT) |
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* |
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* Copyright (C) 2004 Andreas Monitzer <[email protected]> |
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* Copyright (C) 2008 Henrik Kurelid <[email protected]> |
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*/ |
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#include <linux/device.h> |
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#include <linux/dvb/ca.h> |
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#include <linux/fs.h> |
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#include <linux/module.h> |
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#include <media/dvbdev.h> |
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#include "firedtv.h" |
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#define EN50221_TAG_APP_INFO_ENQUIRY 0x9f8020 |
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#define EN50221_TAG_CA_INFO_ENQUIRY 0x9f8030 |
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#define EN50221_TAG_CA_PMT 0x9f8032 |
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#define EN50221_TAG_ENTER_MENU 0x9f8022 |
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static int fdtv_ca_ready(struct firedtv_tuner_status *stat) |
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{ |
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return stat->ca_initialization_status == 1 && |
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stat->ca_error_flag == 0 && |
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stat->ca_dvb_flag == 1 && |
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stat->ca_module_present_status == 1; |
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} |
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static int fdtv_get_ca_flags(struct firedtv_tuner_status *stat) |
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{ |
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int flags = 0; |
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if (stat->ca_module_present_status == 1) |
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flags |= CA_CI_MODULE_PRESENT; |
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if (stat->ca_initialization_status == 1 && |
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stat->ca_error_flag == 0 && |
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stat->ca_dvb_flag == 1) |
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flags |= CA_CI_MODULE_READY; |
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return flags; |
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} |
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static int fdtv_ca_get_caps(void *arg) |
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{ |
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struct ca_caps *cap = arg; |
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cap->slot_num = 1; |
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cap->slot_type = CA_CI; |
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cap->descr_num = 1; |
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cap->descr_type = CA_ECD; |
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return 0; |
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} |
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static int fdtv_ca_get_slot_info(struct firedtv *fdtv, void *arg) |
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{ |
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struct firedtv_tuner_status stat; |
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struct ca_slot_info *slot = arg; |
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int err; |
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err = avc_tuner_status(fdtv, &stat); |
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if (err) |
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return err; |
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if (slot->num != 0) |
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return -EACCES; |
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slot->type = CA_CI; |
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slot->flags = fdtv_get_ca_flags(&stat); |
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return 0; |
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} |
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static int fdtv_ca_app_info(struct firedtv *fdtv, void *arg) |
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{ |
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struct ca_msg *reply = arg; |
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return avc_ca_app_info(fdtv, reply->msg, &reply->length); |
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} |
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static int fdtv_ca_info(struct firedtv *fdtv, void *arg) |
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{ |
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struct ca_msg *reply = arg; |
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return avc_ca_info(fdtv, reply->msg, &reply->length); |
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} |
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static int fdtv_ca_get_mmi(struct firedtv *fdtv, void *arg) |
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{ |
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struct ca_msg *reply = arg; |
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return avc_ca_get_mmi(fdtv, reply->msg, &reply->length); |
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} |
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static int fdtv_ca_get_msg(struct firedtv *fdtv, void *arg) |
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{ |
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struct firedtv_tuner_status stat; |
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int err; |
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switch (fdtv->ca_last_command) { |
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case EN50221_TAG_APP_INFO_ENQUIRY: |
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err = fdtv_ca_app_info(fdtv, arg); |
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break; |
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case EN50221_TAG_CA_INFO_ENQUIRY: |
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err = fdtv_ca_info(fdtv, arg); |
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break; |
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default: |
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err = avc_tuner_status(fdtv, &stat); |
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if (err) |
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break; |
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if (stat.ca_mmi == 1) |
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err = fdtv_ca_get_mmi(fdtv, arg); |
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else { |
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dev_info(fdtv->device, "unhandled CA message 0x%08x\n", |
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fdtv->ca_last_command); |
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err = -EACCES; |
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} |
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} |
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fdtv->ca_last_command = 0; |
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return err; |
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} |
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static int fdtv_ca_pmt(struct firedtv *fdtv, void *arg) |
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{ |
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struct ca_msg *msg = arg; |
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int data_pos; |
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int data_length; |
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int i; |
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data_pos = 4; |
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if (msg->msg[3] & 0x80) { |
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data_length = 0; |
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for (i = 0; i < (msg->msg[3] & 0x7f); i++) |
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data_length = (data_length << 8) + msg->msg[data_pos++]; |
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} else { |
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data_length = msg->msg[3]; |
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} |
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if (data_length > sizeof(msg->msg) - data_pos) |
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return -EINVAL; |
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return avc_ca_pmt(fdtv, &msg->msg[data_pos], data_length); |
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} |
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static int fdtv_ca_send_msg(struct firedtv *fdtv, void *arg) |
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{ |
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struct ca_msg *msg = arg; |
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int err; |
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/* Do we need a semaphore for this? */ |
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fdtv->ca_last_command = |
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(msg->msg[0] << 16) + (msg->msg[1] << 8) + msg->msg[2]; |
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switch (fdtv->ca_last_command) { |
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case EN50221_TAG_CA_PMT: |
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err = fdtv_ca_pmt(fdtv, arg); |
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break; |
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case EN50221_TAG_APP_INFO_ENQUIRY: |
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/* handled in ca_get_msg */ |
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err = 0; |
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break; |
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case EN50221_TAG_CA_INFO_ENQUIRY: |
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/* handled in ca_get_msg */ |
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err = 0; |
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break; |
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case EN50221_TAG_ENTER_MENU: |
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err = avc_ca_enter_menu(fdtv); |
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break; |
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default: |
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dev_err(fdtv->device, "unhandled CA message 0x%08x\n", |
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fdtv->ca_last_command); |
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err = -EACCES; |
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} |
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return err; |
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} |
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static int fdtv_ca_ioctl(struct file *file, unsigned int cmd, void *arg) |
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{ |
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struct dvb_device *dvbdev = file->private_data; |
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struct firedtv *fdtv = dvbdev->priv; |
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struct firedtv_tuner_status stat; |
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int err; |
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switch (cmd) { |
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case CA_RESET: |
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err = avc_ca_reset(fdtv); |
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break; |
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case CA_GET_CAP: |
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err = fdtv_ca_get_caps(arg); |
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break; |
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case CA_GET_SLOT_INFO: |
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err = fdtv_ca_get_slot_info(fdtv, arg); |
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break; |
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case CA_GET_MSG: |
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err = fdtv_ca_get_msg(fdtv, arg); |
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break; |
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case CA_SEND_MSG: |
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err = fdtv_ca_send_msg(fdtv, arg); |
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break; |
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default: |
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dev_info(fdtv->device, "unhandled CA ioctl %u\n", cmd); |
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err = -EOPNOTSUPP; |
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} |
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/* FIXME Is this necessary? */ |
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avc_tuner_status(fdtv, &stat); |
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return err; |
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} |
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static __poll_t fdtv_ca_io_poll(struct file *file, poll_table *wait) |
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{ |
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return EPOLLIN; |
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} |
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static const struct file_operations fdtv_ca_fops = { |
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.owner = THIS_MODULE, |
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.unlocked_ioctl = dvb_generic_ioctl, |
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.open = dvb_generic_open, |
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.release = dvb_generic_release, |
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.poll = fdtv_ca_io_poll, |
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.llseek = noop_llseek, |
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}; |
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static const struct dvb_device fdtv_ca = { |
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.users = 1, |
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.readers = 1, |
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.writers = 1, |
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.fops = &fdtv_ca_fops, |
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.kernel_ioctl = fdtv_ca_ioctl, |
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}; |
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int fdtv_ca_register(struct firedtv *fdtv) |
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{ |
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struct firedtv_tuner_status stat; |
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int err; |
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if (avc_tuner_status(fdtv, &stat)) |
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return -EINVAL; |
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if (!fdtv_ca_ready(&stat)) |
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return -EFAULT; |
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err = dvb_register_device(&fdtv->adapter, &fdtv->cadev, |
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&fdtv_ca, fdtv, DVB_DEVICE_CA, 0); |
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if (stat.ca_application_info == 0) |
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dev_err(fdtv->device, "CaApplicationInfo is not set\n"); |
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if (stat.ca_date_time_request == 1) |
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avc_ca_get_time_date(fdtv, &fdtv->ca_time_interval); |
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return err; |
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} |
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void fdtv_ca_release(struct firedtv *fdtv) |
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{ |
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dvb_unregister_device(fdtv->cadev); |
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}
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