/* * aac audio input device * * Copyright (C) 2008 Google, Inc. * Copyright (C) 2008 HTC Corporation * Copyright (c) 2009-2012, The Linux Foundation. All rights reserved. * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * 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. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* FRAME_NUM must be a power of two */ #define FRAME_NUM (8) #define FRAME_SIZE (772 * 2) /* 1536 bytes data */ #define NT_FRAME_SIZE (780 * 2) /* 1536 bytes data + 24 meta field*/ #define AAC_FRAME_SIZE 1536 #define DMASZ (FRAME_SIZE * FRAME_NUM) #define OUT_FRAME_NUM (2) #define META_OUT_SIZE (24) #define META_IN_SIZE (14) #define OUT_BUFFER_SIZE (32 * 1024 + META_OUT_SIZE) #define BUFFER_SIZE (OUT_BUFFER_SIZE * OUT_FRAME_NUM) #define AUDPREPROC_AAC_EOS_FLG_OFFSET 0x0A /* Offset from beginning of buffer */ #define AUDPREPROC_AAC_EOS_FLG_MASK 0x01 #define AUDPREPROC_AAC_EOS_NONE 0x0 /* No EOS detected */ #define AUDPREPROC_AAC_EOS_SET 0x1 /* EOS set in meta field */ #define PCM_CONFIG_UPDATE_FLAG_ENABLE -1 #define PCM_CONFIG_UPDATE_FLAG_DISABLE 0 #define ENABLE_FLAG_VALUE -1 #define DISABLE_FLAG_VALUE 0 struct buffer { void *data; uint32_t size; uint32_t read; uint32_t addr; uint32_t used; uint32_t mfield_sz; }; struct audio_in { struct buffer in[FRAME_NUM]; spinlock_t dsp_lock; atomic_t in_bytes; atomic_t in_samples; struct mutex lock; struct mutex read_lock; wait_queue_head_t wait; wait_queue_head_t wait_enable; /*write section*/ struct buffer out[OUT_FRAME_NUM]; uint8_t out_head; uint8_t out_tail; uint8_t out_needed; /* number of buffers the dsp is waiting for */ uint32_t out_count; struct mutex write_lock; wait_queue_head_t write_wait; int32_t out_phys; /* physical address of write buffer */ char *out_data; void *map_v_read; void *map_v_write; int mfield; /* meta field embedded in data */ int wflush; /*write flush */ int rflush; /*read flush*/ int out_frame_cnt; struct msm_adsp_module *audrec; /* configuration to use on next enable */ uint32_t buffer_size; /* Frame size (36 bytes) */ uint32_t samp_rate; uint32_t channel_mode; uint32_t bit_rate; /* bit rate for AAC */ uint32_t record_quality; /* record quality (bits/sample/channel) */ uint32_t enc_type; uint32_t dsp_cnt; uint32_t in_head; /* next buffer dsp will write */ uint32_t in_tail; /* next buffer read() will read */ uint32_t in_count; /* number of buffers available to read() */ uint32_t mode; uint32_t eos_ack; uint32_t flush_ack; const char *module_name; unsigned queue_ids; uint16_t enc_id; struct audrec_session_info session_info; /*audrec session info*/ uint16_t source; /* Encoding source bit mask */ uint32_t device_events; /* device events interested in */ uint32_t dev_cnt; spinlock_t dev_lock; /* data allocated for various buffers */ char *data; dma_addr_t phys; int opened; int enabled; int running; int stopped; /* set when stopped, cleared on flush */ int abort; /* set when error, like sample rate mismatch */ char *build_id; }; struct audio_frame { uint16_t frame_count_lsw; uint16_t frame_count_msw; uint16_t frame_length; uint16_t erased_pcm; unsigned char raw_bitstream[]; /* samples */ } __attribute__((packed)); struct audio_frame_nt { uint16_t metadata_len; uint16_t frame_count_lsw; uint16_t frame_count_msw; uint16_t frame_length; uint16_t erased_pcm; uint16_t reserved; uint16_t time_stamp_dword_lsw; uint16_t time_stamp_dword_msw; uint16_t time_stamp_lsw; uint16_t time_stamp_msw; uint16_t nflag_lsw; uint16_t nflag_msw; unsigned char raw_bitstream[]; /* samples */ } __attribute__((packed)); struct aac_encoded_meta_in { uint16_t metadata_len; uint16_t time_stamp_dword_lsw; uint16_t time_stamp_dword_msw; uint16_t time_stamp_lsw; uint16_t time_stamp_msw; uint16_t nflag_lsw; uint16_t nflag_msw; }; /* Audrec Queue command sent macro's */ #define audrec_send_bitstreamqueue(audio, cmd, len) \ msm_adsp_write(audio->audrec, ((audio->queue_ids & 0xFFFF0000) >> 16),\ cmd, len) #define audrec_send_audrecqueue(audio, cmd, len) \ msm_adsp_write(audio->audrec, (audio->queue_ids & 0x0000FFFF),\ cmd, len) /* DSP command send functions */ static int audaac_in_enc_config(struct audio_in *audio, int enable); static int audaac_in_param_config(struct audio_in *audio); static int audaac_in_mem_config(struct audio_in *audio); static int audaac_in_record_config(struct audio_in *audio, int enable); static int audaac_dsp_read_buffer(struct audio_in *audio, uint32_t read_cnt); static void audaac_in_get_dsp_frames(struct audio_in *audio); static int audpcm_config(struct audio_in *audio); static void audaac_out_flush(struct audio_in *audio); static int audpreproc_cmd_cfg_routing_mode(struct audio_in *audio); static void audpreproc_pcm_send_data(struct audio_in *audio, unsigned needed); static void audaac_nt_in_get_dsp_frames(struct audio_in *audio); static void audaac_in_flush(struct audio_in *audio); static void aac_in_listener(u32 evt_id, union auddev_evt_data *evt_payload, void *private_data) { struct audio_in *audio = (struct audio_in *) private_data; unsigned long flags; MM_DBG("evt_id = 0x%8x\n", evt_id); switch (evt_id) { case AUDDEV_EVT_DEV_RDY: { MM_DBG("AUDDEV_EVT_DEV_RDY\n"); spin_lock_irqsave(&audio->dev_lock, flags); audio->dev_cnt++; audio->source |= (0x1 << evt_payload->routing_id); spin_unlock_irqrestore(&audio->dev_lock, flags); if ((audio->running == 1) && (audio->enabled == 1) && (audio->mode == MSM_AUD_ENC_MODE_TUNNEL)) audaac_in_record_config(audio, 1); break; } case AUDDEV_EVT_DEV_RLS: { MM_DBG("AUDDEV_EVT_DEV_RLS\n"); spin_lock_irqsave(&audio->dev_lock, flags); audio->dev_cnt--; audio->source &= ~(0x1 << evt_payload->routing_id); spin_unlock_irqrestore(&audio->dev_lock, flags); if ((!audio->running) || (!audio->enabled)) break; if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) { /* Turn of as per source */ if (audio->source) audaac_in_record_config(audio, 1); else /* Turn off all */ audaac_in_record_config(audio, 0); } break; } case AUDDEV_EVT_FREQ_CHG: { MM_DBG("Encoder Driver got sample rate change event\n"); MM_DBG("sample rate %d\n", evt_payload->freq_info.sample_rate); MM_DBG("dev_type %d\n", evt_payload->freq_info.dev_type); MM_DBG("acdb_dev_id %d\n", evt_payload->freq_info.acdb_dev_id); if ((audio->running == 1) && (audio->enabled == 1)) { /* Stop Recording sample rate does not match with device sample rate */ if (evt_payload->freq_info.sample_rate != audio->samp_rate) { if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) audaac_in_record_config(audio, 0); audio->abort = 1; wake_up(&audio->wait); } } break; } default: MM_ERR("wrong event %d\n", evt_id); break; } } /* Convert Bit Rate to Record Quality field of DSP */ static unsigned int bitrate_to_record_quality(unsigned int sample_rate, unsigned int channel, unsigned int bit_rate) { unsigned int temp; temp = sample_rate * channel; MM_DBG(" sample rate * channel = %d \n", temp); /* To represent in Q12 fixed format */ temp = (bit_rate * 4096) / temp; MM_DBG(" Record Quality = 0x%8x \n", temp); return temp; } /* ------------------- dsp preproc event handler--------------------- */ static void audpreproc_dsp_event(void *data, unsigned id, void *msg) { struct audio_in *audio = data; switch (id) { case AUDPREPROC_ERROR_MSG: { struct audpreproc_err_msg *err_msg = msg; MM_ERR("ERROR_MSG: stream id %d err idx %d\n", err_msg->stream_id, err_msg->aud_preproc_err_idx); /* Error case */ wake_up(&audio->wait_enable); break; } case AUDPREPROC_CMD_CFG_DONE_MSG: { MM_DBG("CMD_CFG_DONE_MSG \n"); break; } case AUDPREPROC_CMD_ENC_CFG_DONE_MSG: { struct audpreproc_cmd_enc_cfg_done_msg *enc_cfg_msg = msg; MM_DBG("CMD_ENC_CFG_DONE_MSG: stream id %d enc type \ 0x%8x\n", enc_cfg_msg->stream_id, enc_cfg_msg->rec_enc_type); /* Encoder enable success */ if (enc_cfg_msg->rec_enc_type & ENCODE_ENABLE) { if(audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) { MM_DBG("routing command\n"); audpreproc_cmd_cfg_routing_mode(audio); } else { audaac_in_param_config(audio); } } else { /* Encoder disable success */ audio->running = 0; if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) audaac_in_record_config(audio, 0); else wake_up(&audio->wait_enable); } break; } case AUDPREPROC_CMD_ENC_PARAM_CFG_DONE_MSG: { MM_DBG("CMD_ENC_PARAM_CFG_DONE_MSG\n"); if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) audaac_in_mem_config(audio); else audpcm_config(audio); break; } case AUDPREPROC_CMD_ROUTING_MODE_DONE_MSG: { struct audpreproc_cmd_routing_mode_done\ *routing_cfg_done_msg = msg; if (routing_cfg_done_msg->configuration == 0) { MM_INFO("routing configuration failed\n"); audio->running = 0; } else audaac_in_param_config(audio); break; } case AUDPREPROC_AFE_CMD_AUDIO_RECORD_CFG_DONE_MSG: { MM_DBG("AFE_CMD_AUDIO_RECORD_CFG_DONE_MSG\n"); wake_up(&audio->wait_enable); break; } default: MM_ERR("Unknown Event id %d\n", id); } } /* ------------------- dsp audrec event handler--------------------- */ static void audrec_dsp_event(void *data, unsigned id, size_t len, void (*getevent)(void *ptr, size_t len)) { struct audio_in *audio = data; switch (id) { case AUDREC_CMD_MEM_CFG_DONE_MSG: { MM_DBG("CMD_MEM_CFG_DONE MSG DONE\n"); audio->running = 1; if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) { if (audio->dev_cnt > 0) audaac_in_record_config(audio, 1); } else { audpreproc_pcm_send_data(audio, 1); wake_up(&audio->wait_enable); } break; } case AUDREC_FATAL_ERR_MSG: { struct audrec_fatal_err_msg fatal_err_msg; getevent(&fatal_err_msg, AUDREC_FATAL_ERR_MSG_LEN); MM_ERR("FATAL_ERR_MSG: err id %d\n", fatal_err_msg.audrec_err_id); /* Error stop the encoder */ audio->stopped = 1; wake_up(&audio->wait); if (audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) wake_up(&audio->write_wait); break; } case AUDREC_UP_PACKET_READY_MSG: { struct audrec_up_pkt_ready_msg pkt_ready_msg; getevent(&pkt_ready_msg, AUDREC_UP_PACKET_READY_MSG_LEN); MM_DBG("UP_PACKET_READY_MSG: write cnt lsw %d \ write cnt msw %d read cnt lsw %d read cnt msw %d \n",\ pkt_ready_msg.audrec_packet_write_cnt_lsw, \ pkt_ready_msg.audrec_packet_write_cnt_msw, \ pkt_ready_msg.audrec_up_prev_read_cnt_lsw, \ pkt_ready_msg.audrec_up_prev_read_cnt_msw); audaac_in_get_dsp_frames(audio); break; } case AUDREC_CMD_PCM_BUFFER_PTR_UPDATE_ARM_TO_ENC_MSG: { MM_DBG("ptr_update recieved from DSP\n"); audpreproc_pcm_send_data(audio, 1); break; } case AUDREC_CMD_PCM_CFG_ARM_TO_ENC_DONE_MSG: { MM_ERR("AUDREC_CMD_PCM_CFG_ARM_TO_ENC_DONE_MSG"); audaac_in_mem_config(audio); break; } case AUDREC_UP_NT_PACKET_READY_MSG: { struct audrec_up_nt_packet_ready_msg pkt_ready_msg; getevent(&pkt_ready_msg, AUDREC_UP_NT_PACKET_READY_MSG_LEN); MM_DBG("UP_NT_PACKET_READY_MSG: write cnt lsw %d \ write cnt msw %d read cnt lsw %d read cnt msw %d \n",\ pkt_ready_msg.audrec_packetwrite_cnt_lsw, \ pkt_ready_msg.audrec_packetwrite_cnt_msw, \ pkt_ready_msg.audrec_upprev_readcount_lsw, \ pkt_ready_msg.audrec_upprev_readcount_msw); audaac_nt_in_get_dsp_frames(audio); break; } case AUDREC_CMD_EOS_ACK_MSG: { MM_DBG("eos ack recieved\n"); break; } case AUDREC_CMD_FLUSH_DONE_MSG: { audio->wflush = 0; audio->rflush = 0; audio->flush_ack = 1; wake_up(&audio->write_wait); MM_DBG("flush ack recieved\n"); break; } case ADSP_MESSAGE_ID: { MM_DBG("Received ADSP event:module audrectask\n"); break; } default: MM_ERR("Unknown Event id %d\n", id); } } static void audaac_in_get_dsp_frames(struct audio_in *audio) { struct audio_frame *frame; uint32_t index; unsigned long flags; MM_DBG("head = %d\n", audio->in_head); index = audio->in_head; frame = (void *) (((char *)audio->in[index].data) - \ sizeof(*frame)); spin_lock_irqsave(&audio->dsp_lock, flags); audio->in[index].size = frame->frame_length; /* statistics of read */ atomic_add(audio->in[index].size, &audio->in_bytes); atomic_add(1, &audio->in_samples); audio->in_head = (audio->in_head + 1) & (FRAME_NUM - 1); /* If overflow, move the tail index foward. */ if (audio->in_head == audio->in_tail) { MM_ERR("Error! not able to keep up the read\n"); audio->in_tail = (audio->in_tail + 1) & (FRAME_NUM - 1); } else audio->in_count++; audaac_dsp_read_buffer(audio, audio->dsp_cnt++); spin_unlock_irqrestore(&audio->dsp_lock, flags); wake_up(&audio->wait); } static void audaac_nt_in_get_dsp_frames(struct audio_in *audio) { struct audio_frame_nt *nt_frame; uint32_t index; unsigned long flags; MM_DBG("head = %d\n", audio->in_head); index = audio->in_head; nt_frame = (void *) (((char *)audio->in[index].data) - \ sizeof(struct audio_frame_nt)); spin_lock_irqsave(&audio->dsp_lock, flags); audio->in[index].size = nt_frame->frame_length; /* statistics of read */ atomic_add(audio->in[index].size, &audio->in_bytes); atomic_add(1, &audio->in_samples); audio->in_head = (audio->in_head + 1) & (FRAME_NUM - 1); /* If overflow, move the tail index foward. */ if (audio->in_head == audio->in_tail) MM_DBG("Error! not able to keep up the read\n"); else audio->in_count++; spin_unlock_irqrestore(&audio->dsp_lock, flags); wake_up(&audio->wait); } struct msm_adsp_ops audrec_aac_adsp_ops = { .event = audrec_dsp_event, }; static int audpreproc_pcm_buffer_ptr_refresh(struct audio_in *audio, unsigned idx, unsigned len) { struct audrec_cmd_pcm_buffer_ptr_refresh_arm_enc cmd; if (len == META_OUT_SIZE) len = len / 2; else len = (len + META_OUT_SIZE) / 2; MM_DBG("len = %d\n", len); memset(&cmd, 0, sizeof(cmd)); cmd.cmd_id = AUDREC_CMD_PCM_BUFFER_PTR_REFRESH_ARM_TO_ENC; cmd.num_buffers = 1; if (cmd.num_buffers == 1) { cmd.buf_address_length[0] = (audio->out[idx].addr & 0xffff0000) >> 16; cmd.buf_address_length[1] = (audio->out[idx].addr & 0x0000ffff); cmd.buf_address_length[2] = (len & 0xffff0000) >> 16; cmd.buf_address_length[3] = (len & 0x0000ffff); } audio->out_frame_cnt++; return audrec_send_audrecqueue(audio, (void *)&cmd, (unsigned int)sizeof(cmd)); } static int audpcm_config(struct audio_in *audio) { struct audrec_cmd_pcm_cfg_arm_to_enc cmd; MM_DBG("\n"); memset(&cmd, 0, sizeof(cmd)); cmd.cmd_id = AUDREC_CMD_PCM_CFG_ARM_TO_ENC; cmd.config_update_flag = PCM_CONFIG_UPDATE_FLAG_ENABLE; cmd.enable_flag = ENABLE_FLAG_VALUE; cmd.sampling_freq = audio->samp_rate; if (!audio->channel_mode) cmd.channels = 1; else cmd.channels = 2; cmd.frequency_of_intimation = 1; cmd.max_number_of_buffers = OUT_FRAME_NUM; return audrec_send_audrecqueue(audio, (void *)&cmd, (unsigned int)sizeof(cmd)); } static int audpreproc_cmd_cfg_routing_mode(struct audio_in *audio) { struct audpreproc_audrec_cmd_routing_mode cmd; MM_DBG("\n"); memset(&cmd, 0, sizeof(cmd)); cmd.cmd_id = AUDPREPROC_AUDREC_CMD_ROUTING_MODE; cmd.stream_id = audio->enc_id; if (audio->mode == MSM_ADSP_ENC_MODE_NON_TUNNEL) cmd.routing_mode = 1; return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd)); } static int audaac_in_enc_config(struct audio_in *audio, int enable) { struct audpreproc_audrec_cmd_enc_cfg cmd; memset(&cmd, 0, sizeof(cmd)); if (audio->build_id[17] == '1') { cmd.cmd_id = AUDPREPROC_AUDREC_CMD_ENC_CFG_2; MM_ERR("sending AUDPREPROC_AUDREC_CMD_ENC_CFG_2 command"); } else { cmd.cmd_id = AUDPREPROC_AUDREC_CMD_ENC_CFG; MM_ERR("sending AUDPREPROC_AUDREC_CMD_ENC_CFG command"); } cmd.stream_id = audio->enc_id; if (enable) cmd.audrec_enc_type = audio->enc_type | ENCODE_ENABLE; else cmd.audrec_enc_type &= ~(ENCODE_ENABLE); return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd)); } static int audaac_in_param_config(struct audio_in *audio) { struct audpreproc_audrec_cmd_parm_cfg_aac cmd; MM_DBG("\n"); memset(&cmd, 0, sizeof(cmd)); cmd.common.cmd_id = AUDPREPROC_AUDREC_CMD_PARAM_CFG; cmd.common.stream_id = audio->enc_id; cmd.aud_rec_samplerate_idx = audio->samp_rate; cmd.aud_rec_stereo_mode = audio->channel_mode; cmd.recording_quality = audio->record_quality; return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd)); } /* To Do: msm_snddev_route_enc(audio->enc_id); */ static int audaac_in_record_config(struct audio_in *audio, int enable) { struct audpreproc_afe_cmd_audio_record_cfg cmd; MM_DBG("\n"); memset(&cmd, 0, sizeof(cmd)); cmd.cmd_id = AUDPREPROC_AFE_CMD_AUDIO_RECORD_CFG; cmd.stream_id = audio->enc_id; if (enable) cmd.destination_activity = AUDIO_RECORDING_TURN_ON; else cmd.destination_activity = AUDIO_RECORDING_TURN_OFF; cmd.source_mix_mask = audio->source; if (audio->enc_id == 2) { if ((cmd.source_mix_mask & INTERNAL_CODEC_TX_SOURCE_MIX_MASK) || (cmd.source_mix_mask & AUX_CODEC_TX_SOURCE_MIX_MASK) || (cmd.source_mix_mask & VOICE_UL_SOURCE_MIX_MASK) || (cmd.source_mix_mask & VOICE_DL_SOURCE_MIX_MASK)) { cmd.pipe_id = SOURCE_PIPE_1; } if (cmd.source_mix_mask & AUDPP_A2DP_PIPE_SOURCE_MIX_MASK) cmd.pipe_id |= SOURCE_PIPE_0; } return audpreproc_send_audreccmdqueue(&cmd, sizeof(cmd)); } static int audaac_in_mem_config(struct audio_in *audio) { struct audrec_cmd_arecmem_cfg cmd; uint16_t *data = (void *) audio->data; int n; memset(&cmd, 0, sizeof(cmd)); cmd.cmd_id = AUDREC_CMD_MEM_CFG_CMD; cmd.audrec_up_pkt_intm_count = 1; cmd.audrec_ext_pkt_start_addr_msw = audio->phys >> 16; cmd.audrec_ext_pkt_start_addr_lsw = audio->phys; cmd.audrec_ext_pkt_buf_number = FRAME_NUM; MM_DBG("audio->phys = %x\n", audio->phys); /* prepare buffer pointers: * 1536 bytes aac packet + 4 halfword header */ for (n = 0; n < FRAME_NUM; n++) { if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) { audio->in[n].data = data + 4; data += (FRAME_SIZE/2); MM_DBG("0x%8x\n", (int)(audio->in[n].data - 8)); } else { audio->in[n].data = data + 12; data += ((AAC_FRAME_SIZE) / 2) + 12; MM_DBG("0x%8x\n", (int)(audio->in[n].data - 24)); } } return audrec_send_audrecqueue(audio, &cmd, sizeof(cmd)); } static int audaac_dsp_read_buffer(struct audio_in *audio, uint32_t read_cnt) { struct up_audrec_packet_ext_ptr cmd; memset(&cmd, 0, sizeof(cmd)); cmd.cmd_id = UP_AUDREC_PACKET_EXT_PTR; cmd.audrec_up_curr_read_count_msw = read_cnt >> 16; cmd.audrec_up_curr_read_count_lsw = read_cnt; return audrec_send_bitstreamqueue(audio, &cmd, sizeof(cmd)); } static int audaac_flush_command(struct audio_in *audio) { struct audrec_cmd_flush cmd; MM_DBG("\n"); memset(&cmd, 0, sizeof(cmd)); cmd.cmd_id = AUDREC_CMD_FLUSH; return audrec_send_audrecqueue(audio, &cmd, sizeof(cmd)); } /* must be called with audio->lock held */ static int audaac_in_enable(struct audio_in *audio) { if (audio->enabled) return 0; if (audpreproc_enable(audio->enc_id, &audpreproc_dsp_event, audio)) { MM_ERR("msm_adsp_enable(audpreproc) failed\n"); return -ENODEV; } if (msm_adsp_enable(audio->audrec)) { MM_ERR("msm_adsp_enable(audrec) failed\n"); audpreproc_disable(audio->enc_id, audio); return -ENODEV; } audio->enabled = 1; audaac_in_enc_config(audio, 1); return 0; } /* must be called with audio->lock held */ static int audaac_in_disable(struct audio_in *audio) { if (audio->enabled) { audio->enabled = 0; audaac_in_enc_config(audio, 0); wake_up(&audio->wait); wait_event_interruptible_timeout(audio->wait_enable, audio->running == 0, 1*HZ); msm_adsp_disable(audio->audrec); audpreproc_disable(audio->enc_id, audio); } return 0; } static void audaac_ioport_reset(struct audio_in *audio) { /* Make sure read/write thread are free from * sleep and knowing that system is not able * to process io request at the moment */ wake_up(&audio->write_wait); mutex_lock(&audio->write_lock); audaac_in_flush(audio); mutex_unlock(&audio->write_lock); wake_up(&audio->wait); mutex_lock(&audio->read_lock); audaac_out_flush(audio); mutex_unlock(&audio->read_lock); } static void audaac_in_flush(struct audio_in *audio) { int i; audio->dsp_cnt = 0; audio->in_head = 0; audio->in_tail = 0; audio->in_count = 0; audio->eos_ack = 0; for (i = 0; i < FRAME_NUM; i++) { audio->in[i].size = 0; audio->in[i].read = 0; } MM_DBG("in_bytes %d\n", atomic_read(&audio->in_bytes)); MM_DBG("in_samples %d\n", atomic_read(&audio->in_samples)); atomic_set(&audio->in_bytes, 0); atomic_set(&audio->in_samples, 0); } static void audaac_out_flush(struct audio_in *audio) { int i; audio->out_head = 0; audio->out_tail = 0; audio->out_count = 0; for (i = 0; i < OUT_FRAME_NUM; i++) { audio->out[i].size = 0; audio->out[i].read = 0; audio->out[i].used = 0; } } /* ------------------- device --------------------- */ static long audaac_in_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct audio_in *audio = file->private_data; int rc = 0; if (cmd == AUDIO_GET_STATS) { struct msm_audio_stats stats; stats.byte_count = atomic_read(&audio->in_bytes); stats.sample_count = atomic_read(&audio->in_samples); if (copy_to_user((void *) arg, &stats, sizeof(stats))) return -EFAULT; return rc; } mutex_lock(&audio->lock); switch (cmd) { case AUDIO_START: { uint32_t freq; /* Poll at 48KHz always */ freq = 48000; MM_DBG("AUDIO_START\n"); rc = msm_snddev_request_freq(&freq, audio->enc_id, SNDDEV_CAP_TX, AUDDEV_CLNT_ENC); MM_DBG("sample rate configured %d sample rate requested %d\n", freq, audio->samp_rate); if (rc < 0) { MM_DBG(" Sample rate can not be set, return code %d\n", rc); msm_snddev_withdraw_freq(audio->enc_id, SNDDEV_CAP_TX, AUDDEV_CLNT_ENC); MM_DBG("msm_snddev_withdraw_freq\n"); break; } /*update aurec session info in audpreproc layer*/ audio->session_info.session_id = audio->enc_id; audio->session_info.sampling_freq = audio->samp_rate; audpreproc_update_audrec_info(&audio->session_info); rc = audaac_in_enable(audio); if (!rc) { rc = wait_event_interruptible_timeout(audio->wait_enable, audio->running != 0, 1*HZ); MM_DBG("state %d rc = %d\n", audio->running, rc); if (audio->running == 0) rc = -ENODEV; else rc = 0; } audio->stopped = 0; break; } case AUDIO_STOP: { audio->session_info.sampling_freq = 0; audpreproc_update_audrec_info(&audio->session_info); rc = audaac_in_disable(audio); rc = msm_snddev_withdraw_freq(audio->enc_id, SNDDEV_CAP_TX, AUDDEV_CLNT_ENC); MM_DBG("msm_snddev_withdraw_freq\n"); audio->stopped = 1; audio->abort = 0; break; } case AUDIO_FLUSH: MM_DBG("AUDIO_FLUSH\n"); audio->rflush = 1; audio->wflush = 1; audaac_ioport_reset(audio); if (audio->running) { audaac_flush_command(audio); rc = wait_event_interruptible(audio->write_wait, !audio->wflush); if (rc < 0) { MM_ERR("AUDIO_FLUSH interrupted\n"); rc = -EINTR; } } else { audio->rflush = 0; audio->wflush = 0; } break; case AUDIO_GET_STREAM_CONFIG: { struct msm_audio_stream_config cfg; memset(&cfg, 0, sizeof(cfg)); cfg.buffer_size = audio->buffer_size; cfg.buffer_count = FRAME_NUM; if (copy_to_user((void *)arg, &cfg, sizeof(cfg))) rc = -EFAULT; break; } case AUDIO_SET_STREAM_CONFIG: { struct msm_audio_stream_config cfg; if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) { rc = -EFAULT; break; } /* Allow only single frame */ if (audio->mode == MSM_AUD_ENC_MODE_TUNNEL) { if (cfg.buffer_size != (FRAME_SIZE - 8)) { rc = -EINVAL; break; } } else { if (cfg.buffer_size != (NT_FRAME_SIZE - 24)) { rc = -EINVAL; break; } } audio->buffer_size = cfg.buffer_size; break; } case AUDIO_GET_CONFIG: { struct msm_audio_pcm_config cfg; memset(&cfg, 0, sizeof(cfg)); cfg.buffer_size = OUT_BUFFER_SIZE; cfg.buffer_count = OUT_FRAME_NUM; if (copy_to_user((void *)arg, &cfg, sizeof(cfg))) rc = -EFAULT; break; } case AUDIO_GET_AAC_ENC_CONFIG: { struct msm_audio_aac_enc_config cfg; if (audio->channel_mode == AUDREC_CMD_MODE_MONO) cfg.channels = 1; else cfg.channels = 2; cfg.sample_rate = audio->samp_rate; cfg.bit_rate = audio->bit_rate; cfg.stream_format = AUDIO_AAC_FORMAT_RAW; if (copy_to_user((void *)arg, &cfg, sizeof(cfg))) rc = -EFAULT; break; } case AUDIO_SET_AAC_ENC_CONFIG: { struct msm_audio_aac_enc_config cfg; unsigned int record_quality; if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) { rc = -EFAULT; break; } if (cfg.stream_format != AUDIO_AAC_FORMAT_RAW) { MM_ERR("unsupported AAC format\n"); rc = -EINVAL; break; } record_quality = bitrate_to_record_quality(cfg.sample_rate, cfg.channels, cfg.bit_rate); /* Range of Record Quality Supported by DSP, Q12 format */ if ((record_quality < 0x800) || (record_quality > 0x4000)) { MM_ERR("Unsupported bit rate \n"); rc = -EINVAL; break; } MM_DBG("channels = %d\n", cfg.channels); if (cfg.channels == 1) { cfg.channels = AUDREC_CMD_MODE_MONO; } else if (cfg.channels == 2) { cfg.channels = AUDREC_CMD_MODE_STEREO; } else { rc = -EINVAL; break; } MM_DBG("channels = %d\n", cfg.channels); audio->samp_rate = cfg.sample_rate; audio->channel_mode = cfg.channels; audio->bit_rate = cfg.bit_rate; audio->record_quality = record_quality; MM_DBG(" Record Quality = 0x%8x \n", audio->record_quality); break; } case AUDIO_GET_SESSION_ID: { if (copy_to_user((void *) arg, &audio->enc_id, sizeof(unsigned short))) { rc = -EFAULT; } break; } default: rc = -EINVAL; } mutex_unlock(&audio->lock); return rc; } static ssize_t audaac_in_read(struct file *file, char __user *buf, size_t count, loff_t *pos) { struct audio_in *audio = file->private_data; unsigned long flags; const char __user *start = buf; void *data; uint32_t index; uint32_t size; int rc = 0; struct aac_encoded_meta_in meta_field; struct audio_frame_nt *nt_frame; MM_DBG(" count = %d\n", count); mutex_lock(&audio->read_lock); while (count > 0) { rc = wait_event_interruptible( audio->wait, (audio->in_count > 0) || audio->stopped || audio->abort || audio->rflush); if (rc < 0) break; if (audio->rflush) { rc = -EBUSY; break; } if (audio->stopped && !audio->in_count) { MM_DBG("Driver in stop state, No more buffer to read"); rc = 0;/* End of File */ break; } if (audio->abort) { rc = -EPERM; /* Not permitted due to abort */ break; } index = audio->in_tail; data = (uint8_t *) audio->in[index].data; size = audio->in[index].size; if (audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) { nt_frame = (struct audio_frame_nt *)(data - sizeof(struct audio_frame_nt)); memcpy((char *)&meta_field.time_stamp_dword_lsw, (char *)&nt_frame->time_stamp_dword_lsw, 12); meta_field.metadata_len = sizeof(struct aac_encoded_meta_in); if (copy_to_user((char *)start, (char *)&meta_field, sizeof(struct aac_encoded_meta_in))) { rc = -EFAULT; break; } if (nt_frame->nflag_lsw & 0x0001) { MM_ERR("recieved EOS in read call\n"); audio->eos_ack = 1; } buf += sizeof(struct aac_encoded_meta_in); count -= sizeof(struct aac_encoded_meta_in); } if (count >= size) { if (copy_to_user(buf, data, size)) { rc = -EFAULT; break; } spin_lock_irqsave(&audio->dsp_lock, flags); if (index != audio->in_tail) { /* overrun -- data is * invalid and we need to retry */ spin_unlock_irqrestore(&audio->dsp_lock, flags); continue; } audio->in[index].size = 0; audio->in_tail = (audio->in_tail + 1) & (FRAME_NUM - 1); audio->in_count--; spin_unlock_irqrestore(&audio->dsp_lock, flags); count -= size; buf += size; if ((audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) && (!audio->eos_ack)) { MM_DBG("sending read ptr command %d %d\n", audio->dsp_cnt, audio->in_tail); audaac_dsp_read_buffer(audio, audio->dsp_cnt++); break; } } else { MM_ERR("short read\n"); break; } break; } mutex_unlock(&audio->read_lock); if (buf > start) return buf - start; return rc; } static void audpreproc_pcm_send_data(struct audio_in *audio, unsigned needed) { struct buffer *frame; unsigned long flags; MM_DBG("\n"); spin_lock_irqsave(&audio->dsp_lock, flags); if (!audio->running) goto done; if (needed && !audio->wflush) { /* We were called from the callback because the DSP * requested more data. Note that the DSP does want * more data, and if a buffer was in-flight, mark it * as available (since the DSP must now be done with * it). */ audio->out_needed = 1; frame = audio->out + audio->out_tail; if (frame->used == 0xffffffff) { MM_DBG("frame %d free\n", audio->out_tail); frame->used = 0; audio->out_tail ^= 1; wake_up(&audio->write_wait); } } if (audio->out_needed) { /* If the DSP currently wants data and we have a * buffer available, we will send it and reset * the needed flag. We'll mark the buffer as in-flight * so that it won't be recycled until the next buffer * is requested */ frame = audio->out + audio->out_tail; if (frame->used) { BUG_ON(frame->used == 0xffffffff); MM_DBG("frame %d busy\n", audio->out_tail); audpreproc_pcm_buffer_ptr_refresh(audio, audio->out_tail, frame->used); frame->used = 0xffffffff; audio->out_needed = 0; } } done: spin_unlock_irqrestore(&audio->dsp_lock, flags); } static int audaac_in_fsync(struct file *file, loff_t ppos1, loff_t ppos2, int datasync) { struct audio_in *audio = file->private_data; int rc = 0; MM_DBG("\n"); /* Macro prints the file name and function */ if (!audio->running || (audio->mode == MSM_AUD_ENC_MODE_TUNNEL)) { rc = -EINVAL; goto done_nolock; } mutex_lock(&audio->write_lock); rc = wait_event_interruptible(audio->write_wait, audio->wflush); MM_DBG("waked on by some event audio->wflush = %d\n", audio->wflush); if (rc < 0) goto done; else if (audio->wflush) { rc = -EBUSY; goto done; } done: mutex_unlock(&audio->write_lock); done_nolock: return rc; } int audpreproc_aac_process_eos(struct audio_in *audio, const char __user *buf_start, unsigned short mfield_size) { struct buffer *frame; int rc = 0; frame = audio->out + audio->out_head; rc = wait_event_interruptible(audio->write_wait, (audio->out_needed && audio->out[0].used == 0 && audio->out[1].used == 0) || (audio->stopped) || (audio->wflush)); if (rc < 0) goto done; if (audio->stopped || audio->wflush) { rc = -EBUSY; goto done; } if (copy_from_user(frame->data, buf_start, mfield_size)) { rc = -EFAULT; goto done; } frame->mfield_sz = mfield_size; audio->out_head ^= 1; frame->used = mfield_size; MM_DBG("copying meta_out frame->used = %d\n", frame->used); audpreproc_pcm_send_data(audio, 0); done: return rc; } static ssize_t audaac_in_write(struct file *file, const char __user *buf, size_t count, loff_t *pos) { struct audio_in *audio = file->private_data; const char __user *start = buf; struct buffer *frame; char *cpy_ptr; int rc = 0, eos_condition = AUDPREPROC_AAC_EOS_NONE; unsigned short mfield_size = 0; int write_count = count; MM_DBG("cnt=%d\n", count); if (count & 1) return -EINVAL; mutex_lock(&audio->write_lock); frame = audio->out + audio->out_head; cpy_ptr = frame->data; rc = wait_event_interruptible(audio->write_wait, (frame->used == 0) || (audio->stopped) || (audio->wflush)); if (rc < 0) goto error; if (audio->stopped || audio->wflush) { rc = -EBUSY; goto error; } if (audio->mfield) { if (buf == start) { /* Processing beginning of user buffer */ if (__get_user(mfield_size, (unsigned short __user *) buf)) { rc = -EFAULT; goto error; } else if (mfield_size > count) { rc = -EINVAL; goto error; } MM_DBG("mf offset_val %x\n", mfield_size); if (copy_from_user(cpy_ptr, buf, mfield_size)) { rc = -EFAULT; goto error; } /* Check if EOS flag is set and buffer has * contains just meta field */ if (cpy_ptr[AUDPREPROC_AAC_EOS_FLG_OFFSET] & AUDPREPROC_AAC_EOS_FLG_MASK) { MM_DBG("EOS SET\n"); eos_condition = AUDPREPROC_AAC_EOS_SET; if (mfield_size == count) { buf += mfield_size; if (audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) { eos_condition = 0; goto exit; } goto error; } else cpy_ptr[AUDPREPROC_AAC_EOS_FLG_OFFSET] &= ~AUDPREPROC_AAC_EOS_FLG_MASK; } cpy_ptr += mfield_size; count -= mfield_size; buf += mfield_size; } else { mfield_size = 0; MM_DBG("continuous buffer\n"); } frame->mfield_sz = mfield_size; } MM_DBG("copying the stream count = %d\n", count); if (copy_from_user(cpy_ptr, buf, count)) { rc = -EFAULT; goto error; } exit: frame->used = count; audio->out_head ^= 1; if (!audio->flush_ack) audpreproc_pcm_send_data(audio, 0); else { audpreproc_pcm_send_data(audio, 1); audio->flush_ack = 0; } if (eos_condition == AUDPREPROC_AAC_EOS_SET) rc = audpreproc_aac_process_eos(audio, start, mfield_size); mutex_unlock(&audio->write_lock); return write_count; error: mutex_unlock(&audio->write_lock); return rc; } static int audaac_in_release(struct inode *inode, struct file *file) { struct audio_in *audio = file->private_data; mutex_lock(&audio->lock); /* with draw frequency for session incase not stopped the driver */ msm_snddev_withdraw_freq(audio->enc_id, SNDDEV_CAP_TX, AUDDEV_CLNT_ENC); auddev_unregister_evt_listner(AUDDEV_CLNT_ENC, audio->enc_id); /*reset the sampling frequency information at audpreproc layer*/ audio->session_info.sampling_freq = 0; audpreproc_update_audrec_info(&audio->session_info); audaac_in_disable(audio); audaac_in_flush(audio); msm_adsp_put(audio->audrec); audpreproc_aenc_free(audio->enc_id); audio->audrec = NULL; audio->opened = 0; if (audio->data) { iounmap(audio->map_v_read); free_contiguous_memory_by_paddr(audio->phys); audio->data = NULL; } if (audio->out_data) { iounmap(audio->map_v_write); free_contiguous_memory_by_paddr(audio->out_phys); audio->out_data = NULL; } mutex_unlock(&audio->lock); return 0; } struct audio_in the_audio_aac_in; static int audaac_in_open(struct inode *inode, struct file *file) { struct audio_in *audio = &the_audio_aac_in; int rc; int encid; mutex_lock(&audio->lock); if (audio->opened) { rc = -EBUSY; goto done; } audio->phys = allocate_contiguous_ebi_nomap(DMASZ, SZ_4K); if (audio->phys) { audio->map_v_read = ioremap(audio->phys, DMASZ); if (IS_ERR(audio->map_v_read)) { MM_ERR("could not map DMA buffers\n"); rc = -ENOMEM; free_contiguous_memory_by_paddr(audio->phys); goto done; } audio->data = audio->map_v_read; } else { MM_ERR("could not allocate DMA buffers\n"); rc = -ENOMEM; goto done; } MM_DBG("Memory addr = 0x%8x phy addr = 0x%8x\n",\ (int) audio->data, (int) audio->phys); if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) { audio->mode = MSM_AUD_ENC_MODE_NONTUNNEL; } else if (!(file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) { audio->mode = MSM_AUD_ENC_MODE_TUNNEL; MM_DBG("Opened for tunnel mode encoding\n"); } else { rc = -EACCES; goto done; } /* Settings will be re-config at AUDIO_SET_CONFIG, * but at least we need to have initial config */ if (audio->mode == MSM_AUD_ENC_MODE_NONTUNNEL) audio->buffer_size = (NT_FRAME_SIZE - 24); else audio->buffer_size = (FRAME_SIZE - 8); audio->enc_type = ENC_TYPE_AAC | audio->mode; audio->samp_rate = 8000; audio->channel_mode = AUDREC_CMD_MODE_MONO; /* For AAC, bit rate hard coded, default settings is * sample rate (8000) x channel count (1) x recording quality (1.75) * = 14000 bps */ audio->bit_rate = 14000; audio->record_quality = 0x1c00; MM_DBG("enc_type = %x\n", audio->enc_type); encid = audpreproc_aenc_alloc(audio->enc_type, &audio->module_name, &audio->queue_ids); if (encid < 0) { MM_ERR("No free encoder available\n"); rc = -ENODEV; goto done; } audio->enc_id = encid; rc = msm_adsp_get(audio->module_name, &audio->audrec, &audrec_aac_adsp_ops, audio); if (rc) { audpreproc_aenc_free(audio->enc_id); goto done; } audio->stopped = 0; audio->source = 0; audio->abort = 0; audio->wflush = 0; audio->rflush = 0; audio->flush_ack = 0; audaac_in_flush(audio); audaac_out_flush(audio); audio->out_phys = allocate_contiguous_ebi_nomap(BUFFER_SIZE, SZ_4K); if (!audio->out_phys) { MM_ERR("could not allocate write buffers\n"); rc = -ENOMEM; goto evt_error; } else { audio->map_v_write = ioremap( audio->out_phys, BUFFER_SIZE); if (IS_ERR(audio->map_v_write)) { MM_ERR("could not map write phys address\n"); rc = -ENOMEM; free_contiguous_memory_by_paddr(audio->out_phys); goto evt_error; } audio->out_data = audio->map_v_write; MM_DBG("write buf: phy addr 0x%08x kernel addr 0x%08x\n", audio->out_phys, (int)audio->out_data); } audio->build_id = socinfo_get_build_id(); MM_DBG("Modem build id = %s\n", audio->build_id); /* Initialize buffer */ audio->out[0].data = audio->out_data + 0; audio->out[0].addr = audio->out_phys + 0; audio->out[0].size = OUT_BUFFER_SIZE; audio->out[1].data = audio->out_data + OUT_BUFFER_SIZE; audio->out[1].addr = audio->out_phys + OUT_BUFFER_SIZE; audio->out[1].size = OUT_BUFFER_SIZE; MM_DBG("audio->out[0].data = %d audio->out[1].data = %d", (unsigned int)audio->out[0].data, (unsigned int)audio->out[1].data); audio->device_events = AUDDEV_EVT_DEV_RDY | AUDDEV_EVT_DEV_RLS | AUDDEV_EVT_FREQ_CHG; rc = auddev_register_evt_listner(audio->device_events, AUDDEV_CLNT_ENC, audio->enc_id, aac_in_listener, (void *) audio); if (rc) { MM_ERR("failed to register device event listener\n"); iounmap(audio->map_v_write); free_contiguous_memory_by_paddr(audio->out_phys); goto evt_error; } audio->mfield = META_OUT_SIZE; file->private_data = audio; audio->opened = 1; audio->out_frame_cnt++; rc = 0; done: mutex_unlock(&audio->lock); return rc; evt_error: msm_adsp_put(audio->audrec); audpreproc_aenc_free(audio->enc_id); mutex_unlock(&audio->lock); return rc; } static const struct file_operations audio_in_fops = { .owner = THIS_MODULE, .open = audaac_in_open, .release = audaac_in_release, .read = audaac_in_read, .write = audaac_in_write, .fsync = audaac_in_fsync, .unlocked_ioctl = audaac_in_ioctl, }; struct miscdevice audio_aac_in_misc = { .minor = MISC_DYNAMIC_MINOR, .name = "msm_aac_in", .fops = &audio_in_fops, }; static int __init audaac_in_init(void) { mutex_init(&the_audio_aac_in.lock); mutex_init(&the_audio_aac_in.read_lock); spin_lock_init(&the_audio_aac_in.dsp_lock); spin_lock_init(&the_audio_aac_in.dev_lock); init_waitqueue_head(&the_audio_aac_in.wait); init_waitqueue_head(&the_audio_aac_in.wait_enable); mutex_init(&the_audio_aac_in.write_lock); init_waitqueue_head(&the_audio_aac_in.write_wait); return misc_register(&audio_aac_in_misc); } device_initcall(audaac_in_init);