diff options
Diffstat (limited to 'drivers/media/pci/bt8xx/dst_ca.c')
| -rw-r--r-- | drivers/media/pci/bt8xx/dst_ca.c | 675 |
1 files changed, 675 insertions, 0 deletions
diff --git a/drivers/media/pci/bt8xx/dst_ca.c b/drivers/media/pci/bt8xx/dst_ca.c new file mode 100644 index 000000000..571392d80 --- /dev/null +++ b/drivers/media/pci/bt8xx/dst_ca.c @@ -0,0 +1,675 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + CA-driver for TwinHan DST Frontend/Card + + Copyright (C) 2004, 2005 Manu Abraham (manu@kromtek.com) + +*/ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/mutex.h> +#include <linux/string.h> +#include <linux/dvb/ca.h> +#include <media/dvbdev.h> +#include <media/dvb_frontend.h> +#include "dst_ca.h" +#include "dst_common.h" + +#define DST_CA_ERROR 0 +#define DST_CA_NOTICE 1 +#define DST_CA_INFO 2 +#define DST_CA_DEBUG 3 + +#define dprintk(x, y, z, format, arg...) do { \ + if (z) { \ + if ((x > DST_CA_ERROR) && (x > y)) \ + printk(KERN_ERR "%s: " format "\n", __func__ , ##arg); \ + else if ((x > DST_CA_NOTICE) && (x > y)) \ + printk(KERN_NOTICE "%s: " format "\n", __func__ , ##arg); \ + else if ((x > DST_CA_INFO) && (x > y)) \ + printk(KERN_INFO "%s: " format "\n", __func__ , ##arg); \ + else if ((x > DST_CA_DEBUG) && (x > y)) \ + printk(KERN_DEBUG "%s: " format "\n", __func__ , ##arg); \ + } else { \ + if (x > y) \ + printk(format, ## arg); \ + } \ +} while(0) + + +static DEFINE_MUTEX(dst_ca_mutex); +static unsigned int verbose = 5; +module_param(verbose, int, 0644); +MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)"); + +static void put_command_and_length(u8 *data, int command, int length) +{ + data[0] = (command >> 16) & 0xff; + data[1] = (command >> 8) & 0xff; + data[2] = command & 0xff; + data[3] = length; +} + +static void put_checksum(u8 *check_string, int length) +{ + dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum."); + dprintk(verbose, DST_CA_DEBUG, 1, " -> string length : 0x%02x", length); + check_string[length] = dst_check_sum (check_string, length); + dprintk(verbose, DST_CA_DEBUG, 1, " -> checksum : 0x%02x", check_string[length]); +} + +static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read) +{ + u8 reply; + + mutex_lock(&state->dst_mutex); + dst_comm_init(state); + msleep(65); + + if (write_dst(state, data, len)) { + dprintk(verbose, DST_CA_INFO, 1, " Write not successful, trying to recover"); + dst_error_recovery(state); + goto error; + } + if ((dst_pio_disable(state)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " DST PIO disable failed."); + goto error; + } + if (read_dst(state, &reply, GET_ACK) < 0) { + dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); + dst_error_recovery(state); + goto error; + } + if (read) { + if (! dst_wait_dst_ready(state, LONG_DELAY)) { + dprintk(verbose, DST_CA_NOTICE, 1, " 8820 not ready"); + goto error; + } + if (read_dst(state, ca_string, 128) < 0) { /* Try to make this dynamic */ + dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); + dst_error_recovery(state); + goto error; + } + } + mutex_unlock(&state->dst_mutex); + return 0; + +error: + mutex_unlock(&state->dst_mutex); + return -EIO; +} + + +static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read) +{ + u8 dst_ca_comm_err = 0; + + while (dst_ca_comm_err < RETRIES) { + dprintk(verbose, DST_CA_NOTICE, 1, " Put Command"); + if (dst_ci_command(state, data, ca_string, len, read)) { // If error + dst_error_recovery(state); + dst_ca_comm_err++; // work required here. + } else { + break; + } + } + + if(dst_ca_comm_err == RETRIES) + return -EIO; + + return 0; +} + + + +static int ca_get_app_info(struct dst_state *state) +{ + int length, str_length; + static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff}; + + put_checksum(&command[0], command[0]); + if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); + return -EIO; + } + dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); + dprintk(verbose, DST_CA_INFO, 1, " ================================ CI Module Application Info ======================================"); + dprintk(verbose, DST_CA_INFO, 1, " Application Type=[%d], Application Vendor=[%d], Vendor Code=[%d]\n%s: Application info=[%s]", + state->messages[7], (state->messages[8] << 8) | state->messages[9], + (state->messages[10] << 8) | state->messages[11], __func__, (char *)(&state->messages[12])); + dprintk(verbose, DST_CA_INFO, 1, " =================================================================================================="); + + // Transform dst message to correct application_info message + length = state->messages[5]; + str_length = length - 6; + if (str_length < 0) { + str_length = 0; + dprintk(verbose, DST_CA_ERROR, 1, "Invalid string length returned in ca_get_app_info(). Recovering."); + } + + // First, the command and length fields + put_command_and_length(&state->messages[0], CA_APP_INFO, length); + + // Copy application_type, application_manufacturer and manufacturer_code + memmove(&state->messages[4], &state->messages[7], 5); + + // Set string length and copy string + state->messages[9] = str_length; + memmove(&state->messages[10], &state->messages[12], str_length); + + return 0; +} + +static int ca_get_ca_info(struct dst_state *state) +{ + int srcPtr, dstPtr, i, num_ids; + static u8 slot_command[8] = {0x07, 0x40, 0x00, 0x00, 0x02, 0x00, 0x00, 0xff}; + const int in_system_id_pos = 8, out_system_id_pos = 4, in_num_ids_pos = 7; + + put_checksum(&slot_command[0], slot_command[0]); + if ((dst_put_ci(state, slot_command, sizeof (slot_command), state->messages, GET_REPLY)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); + return -EIO; + } + dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); + + // Print raw data + dprintk(verbose, DST_CA_INFO, 0, " DST data = ["); + for (i = 0; i < state->messages[0] + 1; i++) { + dprintk(verbose, DST_CA_INFO, 0, " 0x%02x", state->messages[i]); + } + dprintk(verbose, DST_CA_INFO, 0, "]\n"); + + // Set the command and length of the output + num_ids = state->messages[in_num_ids_pos]; + if (num_ids >= 100) { + num_ids = 100; + dprintk(verbose, DST_CA_ERROR, 1, "Invalid number of ids (>100). Recovering."); + } + put_command_and_length(&state->messages[0], CA_INFO, num_ids * 2); + + dprintk(verbose, DST_CA_INFO, 0, " CA_INFO = ["); + srcPtr = in_system_id_pos; + dstPtr = out_system_id_pos; + for(i = 0; i < num_ids; i++) { + dprintk(verbose, DST_CA_INFO, 0, " 0x%02x%02x", state->messages[srcPtr + 0], state->messages[srcPtr + 1]); + // Append to output + state->messages[dstPtr + 0] = state->messages[srcPtr + 0]; + state->messages[dstPtr + 1] = state->messages[srcPtr + 1]; + srcPtr += 2; + dstPtr += 2; + } + dprintk(verbose, DST_CA_INFO, 0, "]\n"); + + return 0; +} + +static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void __user *arg) +{ + int i; + u8 slot_cap[256]; + static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff}; + + put_checksum(&slot_command[0], slot_command[0]); + if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); + return -EIO; + } + dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !"); + + /* Will implement the rest soon */ + + dprintk(verbose, DST_CA_INFO, 1, " Slot cap = [%d]", slot_cap[7]); + dprintk(verbose, DST_CA_INFO, 0, "===================================\n"); + for (i = 0; i < slot_cap[0] + 1; i++) + dprintk(verbose, DST_CA_INFO, 0, " %d", slot_cap[i]); + dprintk(verbose, DST_CA_INFO, 0, "\n"); + + p_ca_caps->slot_num = 1; + p_ca_caps->slot_type = 1; + p_ca_caps->descr_num = slot_cap[7]; + p_ca_caps->descr_type = 1; + + if (copy_to_user(arg, p_ca_caps, sizeof (struct ca_caps))) + return -EFAULT; + + return 0; +} + +/* Need some more work */ +static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) +{ + return -EOPNOTSUPP; +} + + +static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void __user *arg) +{ + int i; + static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff}; + + u8 *slot_info = state->messages; + + put_checksum(&slot_command[0], 7); + if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); + return -EIO; + } + dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); + + /* Will implement the rest soon */ + + dprintk(verbose, DST_CA_INFO, 1, " Slot info = [%d]", slot_info[3]); + dprintk(verbose, DST_CA_INFO, 0, "===================================\n"); + for (i = 0; i < 8; i++) + dprintk(verbose, DST_CA_INFO, 0, " %d", slot_info[i]); + dprintk(verbose, DST_CA_INFO, 0, "\n"); + + if (slot_info[4] & 0x80) { + p_ca_slot_info->flags = CA_CI_MODULE_PRESENT; + p_ca_slot_info->num = 1; + p_ca_slot_info->type = CA_CI; + } else if (slot_info[4] & 0x40) { + p_ca_slot_info->flags = CA_CI_MODULE_READY; + p_ca_slot_info->num = 1; + p_ca_slot_info->type = CA_CI; + } else + p_ca_slot_info->flags = 0; + + if (copy_to_user(arg, p_ca_slot_info, sizeof (struct ca_slot_info))) + return -EFAULT; + + return 0; +} + + +static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) +{ + u8 i = 0; + u32 command = 0; + + if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) + return -EFAULT; + + dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%*ph]", + 3, p_ca_message->msg); + + for (i = 0; i < 3; i++) { + command = command | p_ca_message->msg[i]; + if (i < 2) + command = command << 8; + } + dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command); + + switch (command) { + case CA_APP_INFO: + memcpy(p_ca_message->msg, state->messages, 128); + if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) ) + return -EFAULT; + break; + case CA_INFO: + memcpy(p_ca_message->msg, state->messages, 128); + if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) ) + return -EFAULT; + break; + } + + return 0; +} + +static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length) +{ + if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) { + hw_buffer->msg[2] = p_ca_message->msg[1]; /* MSB */ + hw_buffer->msg[3] = p_ca_message->msg[2]; /* LSB */ + } else { + if (length > 247) { + dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !"); + return -EIO; + } + hw_buffer->msg[0] = (length & 0xff) + 7; + hw_buffer->msg[1] = 0x40; + hw_buffer->msg[2] = 0x03; + hw_buffer->msg[3] = 0x00; + hw_buffer->msg[4] = 0x03; + hw_buffer->msg[5] = length & 0xff; + hw_buffer->msg[6] = 0x00; + + /* + * Need to compute length for EN50221 section 8.3.2, for the time being + * assuming 8.3.2 is not applicable + */ + memcpy(&hw_buffer->msg[7], &p_ca_message->msg[4], length); + } + + return 0; +} + +static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply) +{ + if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed."); + dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST."); + rdc_reset_state(state); + return -EIO; + } + dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command success."); + + return 0; +} + +static u32 asn_1_decode(u8 *asn_1_array) +{ + u8 length_field = 0, word_count = 0, count = 0; + u32 length = 0; + + length_field = asn_1_array[0]; + dprintk(verbose, DST_CA_DEBUG, 1, " Length field=[%02x]", length_field); + if (length_field < 0x80) { + length = length_field & 0x7f; + dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%02x]\n", length); + } else { + word_count = length_field & 0x7f; + for (count = 0; count < word_count; count++) { + length = length << 8; + length += asn_1_array[count + 1]; + dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%04x]", length); + } + } + return length; +} + +static int debug_string(u8 *msg, u32 length, u32 offset) +{ + u32 i; + + dprintk(verbose, DST_CA_DEBUG, 0, " String=[ "); + for (i = offset; i < length; i++) + dprintk(verbose, DST_CA_DEBUG, 0, "%02x ", msg[i]); + dprintk(verbose, DST_CA_DEBUG, 0, "]\n"); + + return 0; +} + + +static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query) +{ + u32 length = 0; + u8 tag_length = 8; + + length = asn_1_decode(&p_ca_message->msg[3]); + dprintk(verbose, DST_CA_DEBUG, 1, " CA Message length=[%d]", length); + debug_string(&p_ca_message->msg[4], length, 0); /* length is excluding tag & length */ + + memset(hw_buffer->msg, '\0', length); + handle_dst_tag(state, p_ca_message, hw_buffer, length); + put_checksum(hw_buffer->msg, hw_buffer->msg[0]); + + debug_string(hw_buffer->msg, (length + tag_length), 0); /* tags too */ + write_to_8820(state, hw_buffer, (length + tag_length), reply); + + return 0; +} + + +/* Board supports CA PMT reply ? */ +static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer) +{ + int ca_pmt_reply_test = 0; + + /* Do test board */ + /* Not there yet but soon */ + + /* CA PMT Reply capable */ + if (ca_pmt_reply_test) { + if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !"); + return -EIO; + } + + /* Process CA PMT Reply */ + /* will implement soon */ + dprintk(verbose, DST_CA_ERROR, 1, " Not there yet"); + } + /* CA PMT Reply not capable */ + if (!ca_pmt_reply_test) { + if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !"); + return -EIO; + } + dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !"); + /* put a dummy message */ + + } + return 0; +} + +static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) +{ + int i; + u32 command; + struct ca_msg *hw_buffer; + int result = 0; + + hw_buffer = kmalloc(sizeof(*hw_buffer), GFP_KERNEL); + if (!hw_buffer) + return -ENOMEM; + dprintk(verbose, DST_CA_DEBUG, 1, " "); + + if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) { + result = -EFAULT; + goto free_mem_and_exit; + } + + /* EN50221 tag */ + command = 0; + + for (i = 0; i < 3; i++) { + command = command | p_ca_message->msg[i]; + if (i < 2) + command = command << 8; + } + dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command); + + switch (command) { + case CA_PMT: + dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT"); + if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !"); + result = -1; + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !"); + break; + case CA_PMT_REPLY: + dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY"); + /* Have to handle the 2 basic types of cards here */ + if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !"); + result = -1; + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !"); + break; + case CA_APP_INFO_ENQUIRY: // only for debugging + dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information"); + + if ((ca_get_app_info(state)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !"); + result = -1; + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !"); + break; + case CA_INFO_ENQUIRY: + dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information"); + + if ((ca_get_ca_info(state)) < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !"); + result = -1; + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !"); + break; + } + +free_mem_and_exit: + kfree (hw_buffer); + + return result; +} + +static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioctl_arg) +{ + struct dvb_device *dvbdev; + struct dst_state *state; + struct ca_slot_info *p_ca_slot_info; + struct ca_caps *p_ca_caps; + struct ca_msg *p_ca_message; + void __user *arg = (void __user *)ioctl_arg; + int result = 0; + + mutex_lock(&dst_ca_mutex); + dvbdev = file->private_data; + state = (struct dst_state *)dvbdev->priv; + p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL); + p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL); + p_ca_caps = kmalloc(sizeof (struct ca_caps), GFP_KERNEL); + if (!p_ca_message || !p_ca_slot_info || !p_ca_caps) { + result = -ENOMEM; + goto free_mem_and_exit; + } + + /* We have now only the standard ioctl's, the driver is upposed to handle internals. */ + switch (cmd) { + case CA_SEND_MSG: + dprintk(verbose, DST_CA_INFO, 1, " Sending message"); + result = ca_send_message(state, p_ca_message, arg); + + if (result < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !"); + goto free_mem_and_exit; + } + break; + case CA_GET_MSG: + dprintk(verbose, DST_CA_INFO, 1, " Getting message"); + result = ca_get_message(state, p_ca_message, arg); + if (result < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !"); + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !"); + break; + case CA_RESET: + dprintk(verbose, DST_CA_ERROR, 1, " Resetting DST"); + dst_error_bailout(state); + msleep(4000); + break; + case CA_GET_SLOT_INFO: + dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info"); + result = ca_get_slot_info(state, p_ca_slot_info, arg); + if (result < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !"); + result = -1; + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_SLOT_INFO Success !"); + break; + case CA_GET_CAP: + dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities"); + result = ca_get_slot_caps(state, p_ca_caps, arg); + if (result < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !"); + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !"); + break; + case CA_GET_DESCR_INFO: + dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description"); + result = ca_get_slot_descr(state, p_ca_message, arg); + if (result < 0) { + dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !"); + goto free_mem_and_exit; + } + dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !"); + break; + default: + result = -EOPNOTSUPP; + } + free_mem_and_exit: + kfree (p_ca_message); + kfree (p_ca_slot_info); + kfree (p_ca_caps); + + mutex_unlock(&dst_ca_mutex); + return result; +} + +static int dst_ca_open(struct inode *inode, struct file *file) +{ + dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file); + + return 0; +} + +static int dst_ca_release(struct inode *inode, struct file *file) +{ + dprintk(verbose, DST_CA_DEBUG, 1, " Device closed."); + + return 0; +} + +static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset) +{ + dprintk(verbose, DST_CA_DEBUG, 1, " Device read."); + + return 0; +} + +static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset) +{ + dprintk(verbose, DST_CA_DEBUG, 1, " Device write."); + + return 0; +} + +static const struct file_operations dst_ca_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = dst_ca_ioctl, + .open = dst_ca_open, + .release = dst_ca_release, + .read = dst_ca_read, + .write = dst_ca_write, + .llseek = noop_llseek, +}; + +static struct dvb_device dvbdev_ca = { + .priv = NULL, + .users = 1, + .readers = 1, + .writers = 1, + .fops = &dst_ca_fops +}; + +struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter) +{ + struct dvb_device *dvbdev; + + dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device"); + if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, + DVB_DEVICE_CA, 0) == 0) { + dst->dst_ca = dvbdev; + return dst->dst_ca; + } + + return NULL; +} + +EXPORT_SYMBOL_GPL(dst_ca_attach); + +MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver"); +MODULE_AUTHOR("Manu Abraham"); +MODULE_LICENSE("GPL"); |