diff options
Diffstat (limited to 'drivers/media/common/siano/smsdvb-main.c')
| -rw-r--r-- | drivers/media/common/siano/smsdvb-main.c | 1271 |
1 files changed, 1271 insertions, 0 deletions
diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c new file mode 100644 index 0000000000..f80caaa333 --- /dev/null +++ b/drivers/media/common/siano/smsdvb-main.c @@ -0,0 +1,1271 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/**************************************************************** + +Siano Mobile Silicon, Inc. +MDTV receiver kernel modules. +Copyright (C) 2006-2008, Uri Shkolnik + + +****************************************************************/ + +#include "smscoreapi.h" + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <asm/div64.h> + +#include <media/dmxdev.h> +#include <media/dvbdev.h> +#include <media/dvb_demux.h> +#include <media/dvb_frontend.h> + +#include "sms-cards.h" + +#include "smsdvb.h" + +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +static LIST_HEAD(g_smsdvb_clients); +static DEFINE_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_isdbt_mode(u32 mode) +{ + switch (mode) { + case 1: + return TRANSMISSION_MODE_2K; + case 2: + return TRANSMISSION_MODE_4K; + case 3: + return TRANSMISSION_MODE_8K; + } + return TRANSMISSION_MODE_AUTO; +} + +static inline int sms_to_isdbt_guard_interval(u32 interval) +{ + switch (interval) { + case 4: + return GUARD_INTERVAL_1_4; + case 8: + return GUARD_INTERVAL_1_8; + case 16: + return GUARD_INTERVAL_1_16; + case 32: + return GUARD_INTERVAL_1_32; + } + return GUARD_INTERVAL_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 * 65535ULL; + 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_isdbt_mode(p->transmission_mode); + c->guard_interval = sms_to_isdbt_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); + c->layer[i].fec = sms_to_code_rate(lr->code_rate); + + /* Time interleaving */ + c->layer[i].interleaving = (u8)lr->ti_ldepth_i; + + /* 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_isdbt_mode(p->transmission_mode); + c->guard_interval = sms_to_isdbt_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); + c->layer[i].fec = sms_to_code_rate(lr->code_rate); + + /* Time interleaving */ + c->layer[i].interleaving = (u8)lr->ti_ldepth_i; + + /* 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 CONFIG_MEDIA_CONTROLLER_DVB + 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) +{ + mutex_lock(&g_smsdvb_clientslock); + + smsdvb_unregister_client((struct smsdvb_client_t *) context); + + mutex_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_hz = 44250 * kHz, + .frequency_max_hz = 867250 * kHz, + .frequency_stepsize_hz = 250 * kHz, + .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); + + mutex_lock(&g_smsdvb_clientslock); + + list_add(&client->entry, &g_smsdvb_clients); + + mutex_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 media_graph_error; + } + + pr_info("DVB interface registered.\n"); + return 0; + +media_graph_error: + mutex_lock(&g_smsdvb_clientslock); + list_del(&client->entry); + mutex_unlock(&g_smsdvb_clientslock); + + smsdvb_debugfs_release(client); + +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; + + 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); + + mutex_lock(&g_smsdvb_clientslock); + + while (!list_empty(&g_smsdvb_clients)) + smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next); + + smsdvb_debugfs_unregister(); + + mutex_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"); |