/****************************************************************
Siano Mobile Silicon, Inc.
MDTV receiver kernel modules.
Copyright (C) 2006-2008, Uri Shkolnik
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
****************************************************************/
#include "smscoreapi.h"
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <asm/div64.h>
#include "dmxdev.h"
#include "dvbdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "sms-cards.h"
#include "smsdvb.h"
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
static struct list_head g_smsdvb_clients;
static struct mutex g_smsdvb_clientslock;
static u32 sms_to_guard_interval_table[] = {
[0] = GUARD_INTERVAL_1_32,
[1] = GUARD_INTERVAL_1_16,
[2] = GUARD_INTERVAL_1_8,
[3] = GUARD_INTERVAL_1_4,
};
static u32 sms_to_code_rate_table[] = {
[0] = FEC_1_2,
[1] = FEC_2_3,
[2] = FEC_3_4,
[3] = FEC_5_6,
[4] = FEC_7_8,
};
static u32 sms_to_hierarchy_table[] = {
[0] = HIERARCHY_NONE,
[1] = HIERARCHY_1,
[2] = HIERARCHY_2,
[3] = HIERARCHY_4,
};
static u32 sms_to_modulation_table[] = {
[0] = QPSK,
[1] = QAM_16,
[2] = QAM_64,
[3] = DQPSK,
};
/* Events that may come from DVB v3 adapter */
static void sms_board_dvb3_event(struct smsdvb_client_t *client,
enum SMS_DVB3_EVENTS event) {
struct smscore_device_t *coredev = client->coredev;
switch (event) {
case DVB3_EVENT_INIT:
pr_debug("DVB3_EVENT_INIT\n");
sms_board_event(coredev, BOARD_EVENT_BIND);
break;
case DVB3_EVENT_SLEEP:
pr_debug("DVB3_EVENT_SLEEP\n");
sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND);
break;
case DVB3_EVENT_HOTPLUG:
pr_debug("DVB3_EVENT_HOTPLUG\n");
sms_board_event(coredev, BOARD_EVENT_POWER_INIT);
break;
case DVB3_EVENT_FE_LOCK:
if (client->event_fe_state != DVB3_EVENT_FE_LOCK) {
client->event_fe_state = DVB3_EVENT_FE_LOCK;
pr_debug("DVB3_EVENT_FE_LOCK\n");
sms_board_event(coredev, BOARD_EVENT_FE_LOCK);
}
break;
case DVB3_EVENT_FE_UNLOCK:
if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) {
client->event_fe_state = DVB3_EVENT_FE_UNLOCK;
pr_debug("DVB3_EVENT_FE_UNLOCK\n");
sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK);
}
break;
case DVB3_EVENT_UNC_OK:
if (client->event_unc_state != DVB3_EVENT_UNC_OK) {
client->event_unc_state = DVB3_EVENT_UNC_OK;
pr_debug("DVB3_EVENT_UNC_OK\n");
sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK);
}
break;
case DVB3_EVENT_UNC_ERR:
if (client->event_unc_state != DVB3_EVENT_UNC_ERR) {
client->event_unc_state = DVB3_EVENT_UNC_ERR;
pr_debug("DVB3_EVENT_UNC_ERR\n");
sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS);
}
break;
default:
pr_err("Unknown dvb3 api event\n");
break;
}
}
static void smsdvb_stats_not_ready(struct dvb_frontend *fe)
{
struct smsdvb_client_t *client =
container_of(fe, struct smsdvb_client_t, frontend);
struct smscore_device_t *coredev = client->coredev;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int i, n_layers;
switch (smscore_get_device_mode(coredev)) {
case DEVICE_MODE_ISDBT:
case DEVICE_MODE_ISDBT_BDA:
n_layers = 4;
break;
default:
n_layers = 1;
}
/* Global stats */
c->strength.len = 1;
c->cnr.len = 1;
c->strength.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
/* Per-layer stats */
c->post_bit_error.len = n_layers;
c->post_bit_count.len = n_layers;
c->block_error.len = n_layers;
c->block_count.len = n_layers;
/*
* Put all of them at FE_SCALE_NOT_AVAILABLE. They're dynamically
* changed when the stats become available.
*/
for (i = 0; i < n_layers; i++) {
c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
}
}
static inline int sms_to_mode(u32 mode)
{
switch (mode) {
case 2:
return TRANSMISSION_MODE_2K;
case 4:
return TRANSMISSION_MODE_4K;
case 8:
return TRANSMISSION_MODE_8K;
}
return TRANSMISSION_MODE_AUTO;
}
static inline int sms_to_status(u32 is_demod_locked, u32 is_rf_locked)
{
if (is_demod_locked)
return FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
FE_HAS_SYNC | FE_HAS_LOCK;
if (is_rf_locked)
return FE_HAS_SIGNAL | FE_HAS_CARRIER;
return 0;
}
static inline u32 sms_to_bw(u32 value)
{
return value * 1000000;
}
#define convert_from_table(value, table, defval) ({ \
u32 __ret; \
if (value < ARRAY_SIZE(table)) \
__ret = table[value]; \
else \
__ret = defval; \
__ret; \
})
#define sms_to_guard_interval(value) \
convert_from_table(value, sms_to_guard_interval_table, \
GUARD_INTERVAL_AUTO);
#define sms_to_code_rate(value) \
convert_from_table(value, sms_to_code_rate_table, \
FEC_NONE);
#define sms_to_hierarchy(value) \
convert_from_table(value, sms_to_hierarchy_table, \
FEC_NONE);
#define sms_to_modulation(value) \
convert_from_table(value, sms_to_modulation_table, \
FEC_NONE);
static void smsdvb_update_tx_params(struct smsdvb_client_t *client,
struct sms_tx_stats *p)
{
struct dvb_frontend *fe = &client->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c->frequency = p->frequency;
client->fe_status = sms_to_status(p->is_demod_locked, 0);
c->bandwidth_hz = sms_to_bw(p->bandwidth);
c->transmission_mode = sms_to_mode(p->transmission_mode);
c->guard_interval = sms_to_guard_interval(p->guard_interval);
c->code_rate_HP = sms_to_code_rate(p->code_rate);
c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
c->hierarchy = sms_to_hierarchy(p->hierarchy);
c->modulation = sms_to_modulation(p->constellation);
}
static void smsdvb_update_per_slices(struct smsdvb_client_t *client,
struct RECEPTION_STATISTICS_PER_SLICES_S *p)
{
struct dvb_frontend *fe = &client->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u64 tmp;
client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
c->modulation = sms_to_modulation(p->constellation);
/* signal Strength, in DBm */
c->strength.stat[0].uvalue = p->in_band_power * 1000;
/* Carrier to noise ratio, in DB */
c->cnr.stat[0].svalue = p->snr * 1000;
/* PER/BER requires demod lock */
if (!p->is_demod_locked)
return;
/* TS PER */
client->last_per = c->block_error.stat[0].uvalue;
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
c->block_error.stat[0].uvalue += p->ets_packets;
c->block_count.stat[0].uvalue += p->ets_packets + p->ts_packets;
/* ber */
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[0].uvalue += p->ber_error_count;
c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
/* Legacy PER/BER */
tmp = p->ets_packets * 65535;
if (p->ts_packets + p->ets_packets)
do_div(tmp, p->ts_packets + p->ets_packets);
client->legacy_per = tmp;
}
static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client,
struct sms_stats *p)
{
struct dvb_frontend *fe = &client->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
if (client->prt_dvb_stats)
client->prt_dvb_stats(client->debug_data, p);
client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
/* Update DVB modulation parameters */
c->frequency = p->frequency;
client->fe_status = sms_to_status(p->is_demod_locked, 0);
c->bandwidth_hz = sms_to_bw(p->bandwidth);
c->transmission_mode = sms_to_mode(p->transmission_mode);
c->guard_interval = sms_to_guard_interval(p->guard_interval);
c->code_rate_HP = sms_to_code_rate(p->code_rate);
c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
c->hierarchy = sms_to_hierarchy(p->hierarchy);
c->modulation = sms_to_modulation(p->constellation);
/* update reception data */
c->lna = p->is_external_lna_on ? 1 : 0;
/* Carrier to noise ratio, in DB */
c->cnr.stat[0].svalue = p->SNR * 1000;
/* signal Strength, in DBm */
c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
/* PER/BER requires demod lock */
if (!p->is_demod_locked)
return;
/* TS PER */
client->last_per = c->block_error.stat[0].uvalue;
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
c->block_error.stat[0].uvalue += p->error_ts_packets;
c->block_count.stat[0].uvalue += p->total_ts_packets;
/* ber */
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[0].uvalue += p->ber_error_count;
c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
/* Legacy PER/BER */
client->legacy_ber = p->ber;
};
static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client,
struct sms_isdbt_stats *p)
{
struct dvb_frontend *fe = &client->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct sms_isdbt_layer_stats *lr;
int i, n_layers;
if (client->prt_isdb_stats)
client->prt_isdb_stats(client->debug_data, p);
client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
/*
* Firmware 2.1 seems to report only lock status and
* signal strength. The signal strength indicator is at the
* wrong field.
*/
if (p->statistics_type == 0) {
c->strength.stat[0].uvalue = ((s32)p->transmission_mode) * 1000;
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
return;
}
/* Update ISDB-T transmission parameters */
c->frequency = p->frequency;
c->bandwidth_hz = sms_to_bw(p->bandwidth);
c->transmission_mode = sms_to_mode(p->transmission_mode);
c->guard_interval = sms_to_guard_interval(p->guard_interval);
c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
n_layers = p->num_of_layers;
if (n_layers < 1)
n_layers = 1;
if (n_layers > 3)
n_layers = 3;
c->isdbt_layer_enabled = 0;
/* update reception data */
c->lna = p->is_external_lna_on ? 1 : 0;
/* Carrier to noise ratio, in DB */
c->cnr.stat[0].svalue = p->SNR * 1000;
/* signal Strength, in DBm */
c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
/* PER/BER and per-layer stats require demod lock */
if (!p->is_demod_locked)
return;
client->last_per = c->block_error.stat[0].uvalue;
/* Clears global counters, as the code below will sum it again */
c->block_error.stat[0].uvalue = 0;
c->block_count.stat[0].uvalue = 0;
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[0].uvalue = 0;
c->post_bit_count.stat[0].uvalue = 0;
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
for (i = 0; i < n_layers; i++) {
lr = &p->layer_info[i];
/* Update per-layer transmission parameters */
if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
c->isdbt_layer_enabled |= 1 << i;
c->layer[i].segment_count = lr->number_of_segments;
} else {
continue;
}
c->layer[i].modulation = sms_to_modulation(lr->constellation);
/* TS PER */
c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
/* Update global PER counter */
c->block_error.stat[0].uvalue += lr->error_ts_packets;
c->block_count.stat[0].uvalue += lr->total_ts_packets;
/* BER */
c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
/* Update global BER counter */
c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
}
}
static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client,
struct sms_isdbt_stats_ex *p)
{
struct dvb_frontend *fe = &client->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct sms_isdbt_layer_stats *lr;
int i, n_layers;
if (client->prt_isdb_stats_ex)
client->prt_isdb_stats_ex(client->debug_data, p);
/* Update ISDB-T transmission parameters */
c->frequency = p->frequency;
client->fe_status = sms_to_status(p->is_demod_locked, 0);
c->bandwidth_hz = sms_to_bw(p->bandwidth);
c->transmission_mode = sms_to_mode(p->transmission_mode);
c->guard_interval = sms_to_guard_interval(p->guard_interval);
c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
n_layers = p->num_of_layers;
if (n_layers < 1)
n_layers = 1;
if (n_layers > 3)
n_layers = 3;
c->isdbt_layer_enabled = 0;
/* update reception data */
c->lna = p->is_external_lna_on ? 1 : 0;
/* Carrier to noise ratio, in DB */
c->cnr.stat[0].svalue = p->SNR * 1000;
/* signal Strength, in DBm */
c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
/* PER/BER and per-layer stats require demod lock */
if (!p->is_demod_locked)
return;
client->last_per = c->block_error.stat[0].uvalue;
/* Clears global counters, as the code below will sum it again */
c->block_error.stat[0].uvalue = 0;
c->block_count.stat[0].uvalue = 0;
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[0].uvalue = 0;
c->post_bit_count.stat[0].uvalue = 0;
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.len = n_layers + 1;
c->post_bit_count.len = n_layers + 1;
c->block_error.len = n_layers + 1;
c->block_count.len = n_layers + 1;
for (i = 0; i < n_layers; i++) {
lr = &p->layer_info[i];
/* Update per-layer transmission parameters */
if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
c->isdbt_layer_enabled |= 1 << i;
c->layer[i].segment_count = lr->number_of_segments;
} else {
continue;
}
c->layer[i].modulation = sms_to_modulation(lr->constellation);
/* TS PER */
c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
/* Update global PER counter */
c->block_error.stat[0].uvalue += lr->error_ts_packets;
c->block_count.stat[0].uvalue += lr->total_ts_packets;
/* ber */
c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
/* Update global ber counter */
c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
}
}
static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
{
struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) (((u8 *) cb->p)
+ cb->offset);
void *p = phdr + 1;
struct dvb_frontend *fe = &client->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
bool is_status_update = false;
switch (phdr->msg_type) {
case MSG_SMS_DVBT_BDA_DATA:
/*
* Only feed data to dvb demux if are there any feed listening
* to it and if the device has tuned
*/
if (client->feed_users && client->has_tuned)
dvb_dmx_swfilter(&client->demux, p,
cb->size - sizeof(struct sms_msg_hdr));
break;
case MSG_SMS_RF_TUNE_RES:
case MSG_SMS_ISDBT_TUNE_RES:
complete(&client->tune_done);
break;
case MSG_SMS_SIGNAL_DETECTED_IND:
client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC |
FE_HAS_LOCK;
is_status_update = true;
break;
case MSG_SMS_NO_SIGNAL_IND:
client->fe_status = 0;
is_status_update = true;
break;
case MSG_SMS_TRANSMISSION_IND:
smsdvb_update_tx_params(client, p);
is_status_update = true;
break;
case MSG_SMS_HO_PER_SLICES_IND:
smsdvb_update_per_slices(client, p);
is_status_update = true;
break;
case MSG_SMS_GET_STATISTICS_RES:
switch (smscore_get_device_mode(client->coredev)) {
case DEVICE_MODE_ISDBT:
case DEVICE_MODE_ISDBT_BDA:
smsdvb_update_isdbt_stats(client, p);
break;
default:
/* Skip sms_msg_statistics_info:request_result field */
smsdvb_update_dvb_stats(client, p + sizeof(u32));
}
is_status_update = true;
break;
/* Only for ISDB-T */
case MSG_SMS_GET_STATISTICS_EX_RES:
/* Skip sms_msg_statistics_info:request_result field? */
smsdvb_update_isdbt_stats_ex(client, p + sizeof(u32));
is_status_update = true;
break;
default:
pr_debug("message not handled\n");
}
smscore_putbuffer(client->coredev, cb);
if (is_status_update) {
if (client->fe_status & FE_HAS_LOCK) {
sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK);
if (client->last_per == c->block_error.stat[0].uvalue)
sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK);
else
sms_board_dvb3_event(client, DVB3_EVENT_UNC_ERR);
client->has_tuned = true;
} else {
smsdvb_stats_not_ready(fe);
client->has_tuned = false;
sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK);
}
complete(&client->stats_done);
}
return 0;
}
static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
{
#ifdef [31mCONFIG_MEDIA_CONTROLLER_DVB[0m
struct smscore_device_t *coredev = client->coredev;
if (!coredev->media_dev)
return;
media_device_unregister(coredev->media_dev);
media_device_cleanup(coredev->media_dev);
kfree(coredev->media_dev);
coredev->media_dev = NULL;
#endif
}
static void smsdvb_unregister_client(struct smsdvb_client_t *client)
{
/* must be called under clientslock */
list_del(&client->entry);
smsdvb_debugfs_release(client);
smscore_unregister_client(client->smsclient);
dvb_unregister_frontend(&client->frontend);
dvb_dmxdev_release(&client->dmxdev);
dvb_dmx_release(&client->demux);
smsdvb_media_device_unregister(client);
dvb_unregister_adapter(&client->adapter);
kfree(client);
}
static void smsdvb_onremove(void *context)
{
kmutex_lock(&g_smsdvb_clientslock);
smsdvb_unregister_client((struct smsdvb_client_t *) context);
kmutex_unlock(&g_smsdvb_clientslock);
}
static int smsdvb_start_feed(struct dvb_demux_feed *feed)
{
struct smsdvb_client_t *client =
container_of(feed->demux, struct smsdvb_client_t, demux);
struct sms_msg_data pid_msg;
pr_debug("add pid %d(%x)\n",
feed->pid, feed->pid);
client->feed_users++;
pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
pid_msg.x_msg_header.msg_flags = 0;
pid_msg.x_msg_header.msg_type = MSG_SMS_ADD_PID_FILTER_REQ;
pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
pid_msg.msg_data[0] = feed->pid;
return smsclient_sendrequest(client->smsclient,
&pid_msg, sizeof(pid_msg));
}
static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
{
struct smsdvb_client_t *client =
container_of(feed->demux, struct smsdvb_client_t, demux);
struct sms_msg_data pid_msg;
pr_debug("remove pid %d(%x)\n",
feed->pid, feed->pid);
client->feed_users--;
pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
pid_msg.x_msg_header.msg_flags = 0;
pid_msg.x_msg_header.msg_type = MSG_SMS_REMOVE_PID_FILTER_REQ;
pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
pid_msg.msg_data[0] = feed->pid;
return smsclient_sendrequest(client->smsclient,
&pid_msg, sizeof(pid_msg));
}
static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
void *buffer, size_t size,
struct completion *completion)
{
int rc;
rc = smsclient_sendrequest(client->smsclient, buffer, size);
if (rc < 0)
return rc;
return wait_for_completion_timeout(completion,
msecs_to_jiffies(2000)) ?
0 : -ETIME;
}
static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
{
int rc;
struct sms_msg_hdr msg;
/* Don't request stats too fast */
if (client->get_stats_jiffies &&
(!time_after(jiffies, client->get_stats_jiffies)))
return 0;
client->get_stats_jiffies = jiffies + msecs_to_jiffies(100);
msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
msg.msg_dst_id = HIF_TASK;
msg.msg_flags = 0;
msg.msg_length = sizeof(msg);
switch (smscore_get_device_mode(client->coredev)) {
case DEVICE_MODE_ISDBT:
case DEVICE_MODE_ISDBT_BDA:
/*
* Check for firmware version, to avoid breaking for old cards
*/
if (client->coredev->fw_version >= 0x800)
msg.msg_type = MSG_SMS_GET_STATISTICS_EX_REQ;
else
msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
break;
default:
msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
}
rc = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
&client->stats_done);
return rc;
}
static inline int led_feedback(struct smsdvb_client_t *client)
{
if (!(client->fe_status & FE_HAS_LOCK))
return sms_board_led_feedback(client->coredev, SMS_LED_OFF);
return sms_board_led_feedback(client->coredev,
(client->legacy_ber == 0) ?
SMS_LED_HI : SMS_LED_LO);
}
static int smsdvb_read_status(struct dvb_frontend *fe, enum fe_status *stat)
{
int rc;
struct smsdvb_client_t *client;
client = container_of(fe, struct smsdvb_client_t, frontend);
rc = smsdvb_send_statistics_request(client);
*stat = client->fe_status;
led_feedback(client);
return rc;
}
static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
{
int rc;
struct smsdvb_client_t *client;
client = container_of(fe, struct smsdvb_client_t, frontend);
rc = smsdvb_send_statistics_request(client);
*ber = client->legacy_ber;
led_feedback(client);
return rc;
}
static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int rc;
s32 power = (s32) c->strength.stat[0].uvalue;
struct smsdvb_client_t *client;
client = container_of(fe, struct smsdvb_client_t, frontend);
rc = smsdvb_send_statistics_request(client);
if (power < -95)
*strength = 0;
else if (power > -29)
*strength = 65535;
else
*strength = (power + 95) * 65535 / 66;
led_feedback(client);
return rc;
}
static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int rc;
struct smsdvb_client_t *client;
client = container_of(fe, struct smsdvb_client_t, frontend);
rc = smsdvb_send_statistics_request(client);
/* Preferred scale for SNR with legacy API: 0.1 dB */
*snr = ((u32)c->cnr.stat[0].svalue) / 100;
led_feedback(client);
return rc;
}
static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
int rc;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct smsdvb_client_t *client;
client = container_of(fe, struct smsdvb_client_t, frontend);
rc = smsdvb_send_statistics_request(client);
*ucblocks = c->block_error.stat[0].uvalue;
led_feedback(client);
return rc;
}
static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *tune)
{
pr_debug("\n");
tune->min_delay_ms = 400;
tune->step_size = 250000;
tune->max_drift = 0;
return 0;
}
static int smsdvb_dvbt_set_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct smsdvb_client_t *client =
container_of(fe, struct smsdvb_client_t, frontend);
struct {
struct sms_msg_hdr msg;
u32 Data[3];
} msg;
int ret;
client->fe_status = 0;
client->event_fe_state = -1;
client->event_unc_state = -1;
fe->dtv_property_cache.delivery_system = SYS_DVBT;
msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
msg.msg.msg_dst_id = HIF_TASK;
msg.msg.msg_flags = 0;
msg.msg.msg_type = MSG_SMS_RF_TUNE_REQ;
msg.msg.msg_length = sizeof(msg);
msg.Data[0] = c->frequency;
msg.Data[2] = 12000000;
pr_debug("%s: freq %d band %d\n", __func__, c->frequency,
c->bandwidth_hz);
switch (c->bandwidth_hz / 1000000) {
case 8:
msg.Data[1] = BW_8_MHZ;
break;
case 7:
msg.Data[1] = BW_7_MHZ;
break;
case 6:
msg.Data[1] = BW_6_MHZ;
break;
case 0:
return -EOPNOTSUPP;
default:
return -EINVAL;
}
/* Disable LNA, if any. An error is returned if no LNA is present */
ret = sms_board_lna_control(client->coredev, 0);
if (ret == 0) {
enum fe_status status;
/* tune with LNA off at first */
ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
&client->tune_done);
smsdvb_read_status(fe, &status);
if (status & FE_HAS_LOCK)
return ret;
/* previous tune didn't lock - enable LNA and tune again */
sms_board_lna_control(client->coredev, 1);
}
return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
&client->tune_done);
}
static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct smsdvb_client_t *client =
container_of(fe, struct smsdvb_client_t, frontend);
int board_id = smscore_get_board_id(client->coredev);
struct sms_board *board = sms_get_board(board_id);
enum sms_device_type_st type = board->type;
int ret;
struct {
struct sms_msg_hdr msg;
u32 Data[4];
} msg;
fe->dtv_property_cache.delivery_system = SYS_ISDBT;
msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
msg.msg.msg_dst_id = HIF_TASK;
msg.msg.msg_flags = 0;
msg.msg.msg_type = MSG_SMS_ISDBT_TUNE_REQ;
msg.msg.msg_length = sizeof(msg);
if (c->isdbt_sb_segment_idx == -1)
c->isdbt_sb_segment_idx = 0;
if (!c->isdbt_layer_enabled)
c->isdbt_layer_enabled = 7;
msg.Data[0] = c->frequency;
msg.Data[1] = BW_ISDBT_1SEG;
msg.Data[2] = 12000000;
msg.Data[3] = c->isdbt_sb_segment_idx;
if (c->isdbt_partial_reception) {
if ((type == SMS_PELE || type == SMS_RIO) &&
c->isdbt_sb_segment_count > 3)
msg.Data[1] = BW_ISDBT_13SEG;
else if (c->isdbt_sb_segment_count > 1)
msg.Data[1] = BW_ISDBT_3SEG;
} else if (type == SMS_PELE || type == SMS_RIO)
msg.Data[1] = BW_ISDBT_13SEG;
c->bandwidth_hz = 6000000;
pr_debug("freq %d segwidth %d segindex %d\n",
c->frequency, c->isdbt_sb_segment_count,
c->isdbt_sb_segment_idx);
/* Disable LNA, if any. An error is returned if no LNA is present */
ret = sms_board_lna_control(client->coredev, 0);
if (ret == 0) {
enum fe_status status;
/* tune with LNA off at first */
ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
&client->tune_done);
smsdvb_read_status(fe, &status);
if (status & FE_HAS_LOCK)
return ret;
/* previous tune didn't lock - enable LNA and tune again */
sms_board_lna_control(client->coredev, 1);
}
return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
&client->tune_done);
}
static int smsdvb_set_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct smsdvb_client_t *client =
container_of(fe, struct smsdvb_client_t, frontend);
struct smscore_device_t *coredev = client->coredev;
smsdvb_stats_not_ready(fe);
c->strength.stat[0].uvalue = 0;
c->cnr.stat[0].uvalue = 0;
client->has_tuned = false;
switch (smscore_get_device_mode(coredev)) {
case DEVICE_MODE_DVBT:
case DEVICE_MODE_DVBT_BDA:
return smsdvb_dvbt_set_frontend(fe);
case DEVICE_MODE_ISDBT:
case DEVICE_MODE_ISDBT_BDA:
return smsdvb_isdbt_set_frontend(fe);
default:
return -EINVAL;
}
}
static int smsdvb_init(struct dvb_frontend *fe)
{
struct smsdvb_client_t *client =
container_of(fe, struct smsdvb_client_t, frontend);
sms_board_power(client->coredev, 1);
sms_board_dvb3_event(client, DVB3_EVENT_INIT);
return 0;
}
static int smsdvb_sleep(struct dvb_frontend *fe)
{
struct smsdvb_client_t *client =
container_of(fe, struct smsdvb_client_t, frontend);
sms_board_led_feedback(client->coredev, SMS_LED_OFF);
sms_board_power(client->coredev, 0);
sms_board_dvb3_event(client, DVB3_EVENT_SLEEP);
return 0;
}
static void smsdvb_release(struct dvb_frontend *fe)
{
/* do nothing */
}
static const struct dvb_frontend_ops smsdvb_fe_ops = {
.info = {
.name = "Siano Mobile Digital MDTV Receiver",
.frequency_min = 44250000,
.frequency_max = 867250000,
.frequency_stepsize = 250000,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_RECOVER |
FE_CAN_HIERARCHY_AUTO,
},
.release = smsdvb_release,
.set_frontend = smsdvb_set_frontend,
.get_tune_settings = smsdvb_get_tune_settings,
.read_status = smsdvb_read_status,
.read_ber = smsdvb_read_ber,
.read_signal_strength = smsdvb_read_signal_strength,
.read_snr = smsdvb_read_snr,
.read_ucblocks = smsdvb_read_ucblocks,
.init = smsdvb_init,
.sleep = smsdvb_sleep,
};
static int smsdvb_hotplug(struct smscore_device_t *coredev,
struct device *device, int arrival)
{
struct smsclient_params_t params;
struct smsdvb_client_t *client;
int rc;
/* device removal handled by onremove callback */
if (!arrival)
return 0;
client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL);
if (!client)
return -ENOMEM;
/* register dvb adapter */
rc = dvb_register_adapter(&client->adapter,
sms_get_board(
smscore_get_board_id(coredev))->name,
THIS_MODULE, device, adapter_nr);
if (rc < 0) {
pr_err("dvb_register_adapter() failed %d\n", rc);
goto adapter_error;
}
dvb_register_media_controller(&client->adapter, coredev->media_dev);
/* init dvb demux */
client->demux.dmx.capabilities = DMX_TS_FILTERING;
client->demux.filternum = 32; /* todo: nova ??? */
client->demux.feednum = 32;
client->demux.start_feed = smsdvb_start_feed;
client->demux.stop_feed = smsdvb_stop_feed;
rc = dvb_dmx_init(&client->demux);
if (rc < 0) {
pr_err("dvb_dmx_init failed %d\n", rc);
goto dvbdmx_error;
}
/* init dmxdev */
client->dmxdev.filternum = 32;
client->dmxdev.demux = &client->demux.dmx;
client->dmxdev.capabilities = 0;
rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
if (rc < 0) {
pr_err("dvb_dmxdev_init failed %d\n", rc);
goto dmxdev_error;
}
/* init and register frontend */
memcpy(&client->frontend.ops, &smsdvb_fe_ops,
sizeof(struct dvb_frontend_ops));
switch (smscore_get_device_mode(coredev)) {
case DEVICE_MODE_DVBT:
case DEVICE_MODE_DVBT_BDA:
client->frontend.ops.delsys[0] = SYS_DVBT;
break;
case DEVICE_MODE_ISDBT:
case DEVICE_MODE_ISDBT_BDA:
client->frontend.ops.delsys[0] = SYS_ISDBT;
break;
}
rc = dvb_register_frontend(&client->adapter, &client->frontend);
if (rc < 0) {
pr_err("frontend registration failed %d\n", rc);
goto frontend_error;
}
params.initial_id = 1;
params.data_type = MSG_SMS_DVBT_BDA_DATA;
params.onresponse_handler = smsdvb_onresponse;
params.onremove_handler = smsdvb_onremove;
params.context = client;
rc = smscore_register_client(coredev, ¶ms, &client->smsclient);
if (rc < 0) {
pr_err("smscore_register_client() failed %d\n", rc);
goto client_error;
}
client->coredev = coredev;
init_completion(&client->tune_done);
init_completion(&client->stats_done);
kmutex_lock(&g_smsdvb_clientslock);
list_add(&client->entry, &g_smsdvb_clients);
kmutex_unlock(&g_smsdvb_clientslock);
client->event_fe_state = -1;
client->event_unc_state = -1;
sms_board_dvb3_event(client, DVB3_EVENT_HOTPLUG);
sms_board_setup(coredev);
if (smsdvb_debugfs_create(client) < 0)
pr_info("failed to create debugfs node\n");
rc = dvb_create_media_graph(&client->adapter, true);
if (rc < 0) {
pr_err("dvb_create_media_graph failed %d\n", rc);
goto client_error;
}
pr_info("DVB interface registered.\n");
return 0;
client_error:
dvb_unregister_frontend(&client->frontend);
frontend_error:
dvb_dmxdev_release(&client->dmxdev);
dmxdev_error:
dvb_dmx_release(&client->demux);
dvbdmx_error:
smsdvb_media_device_unregister(client);
dvb_unregister_adapter(&client->adapter);
adapter_error:
kfree(client);
return rc;
}
static int __init smsdvb_module_init(void)
{
int rc;
INIT_LIST_HEAD(&g_smsdvb_clients);
kmutex_init(&g_smsdvb_clientslock);
smsdvb_debugfs_register();
rc = smscore_register_hotplug(smsdvb_hotplug);
pr_debug("\n");
return rc;
}
static void __exit smsdvb_module_exit(void)
{
smscore_unregister_hotplug(smsdvb_hotplug);
kmutex_lock(&g_smsdvb_clientslock);
while (!list_empty(&g_smsdvb_clients))
smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next);
smsdvb_debugfs_unregister();
kmutex_unlock(&g_smsdvb_clientslock);
}
module_init(smsdvb_module_init);
module_exit(smsdvb_module_exit);
MODULE_DESCRIPTION("SMS DVB subsystem adaptation module");
MODULE_AUTHOR("Siano Mobile Silicon, Inc. (uris@siano-ms.com)");
MODULE_LICENSE("GPL");