| /* arch/arm/mach-msm/audio_ac3.c |
| * |
| * Copyright (c) 2008-2009, 2011-2012 Code Aurora Forum. All rights reserved. |
| * |
| * This code also borrows from audio_aac.c, which is |
| * Copyright (C) 2008 Google, Inc. |
| * Copyright (C) 2008 HTC Corporation |
| * |
| * 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. |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, you can find it at http://www.fsf.org. |
| */ |
| |
| #include <asm/atomic.h> |
| #include <asm/ioctls.h> |
| |
| #include <linux/module.h> |
| #include <linux/fs.h> |
| #include <linux/miscdevice.h> |
| #include <linux/uaccess.h> |
| #include <linux/kthread.h> |
| #include <linux/wait.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/debugfs.h> |
| #include <linux/delay.h> |
| #include <linux/list.h> |
| #include <linux/earlysuspend.h> |
| #include <linux/slab.h> |
| #include <linux/msm_audio.h> |
| #include <linux/memory_alloc.h> |
| #include <linux/msm_audio_ac3.h> |
| #include <linux/ion.h> |
| |
| #include <mach/msm_adsp.h> |
| #include <mach/iommu.h> |
| #include <mach/iommu_domains.h> |
| #include <mach/qdsp5/qdsp5audppcmdi.h> |
| #include <mach/qdsp5/qdsp5audppmsg.h> |
| #include <mach/qdsp5/qdsp5audpp.h> |
| #include <mach/qdsp5/qdsp5audplaycmdi.h> |
| #include <mach/qdsp5/qdsp5audplaymsg.h> |
| #include <mach/qdsp5/qdsp5rmtcmdi.h> |
| #include <mach/debug_mm.h> |
| #include <mach/msm_memtypes.h> |
| |
| #include "audmgr.h" |
| |
| #define BUFSZ 4096 |
| #define DMASZ (BUFSZ * 2) |
| |
| #define AUDDEC_DEC_AC3 23 |
| |
| #define PCM_BUFSZ 6168 /* maximum frame size is 512 * 6 samples */ |
| #define PCM_BUF_MAX_COUNT 5 /* DSP only accepts 5 buffers at most |
| * but support 2 buffers currently |
| */ |
| #define ROUTING_MODE_FTRT 1 |
| #define ROUTING_MODE_RT 2 |
| |
| /* Decoder status received from AUDPPTASK */ |
| #define AUDPP_DEC_STATUS_SLEEP 0 |
| #define AUDPP_DEC_STATUS_INIT 1 |
| #define AUDPP_DEC_STATUS_CFG 2 |
| #define AUDPP_DEC_STATUS_PLAY 3 |
| |
| #define AUDAC3_METAFIELD_MASK 0xFFFF0000 |
| #define AUDAC3_EOS_FLG_OFFSET 0x0A /* Offset from beginning of buffer */ |
| #define AUDAC3_EOS_FLG_MASK 0x01 |
| #define AUDAC3_EOS_NONE 0x0 /* No EOS detected */ |
| #define AUDAC3_EOS_SET 0x1 /* EOS set in meta field */ |
| |
| #define AUDAC3_EVENT_NUM 10 /* Default number of pre-allocated event packets */ |
| |
| struct buffer { |
| void *data; |
| unsigned size; |
| unsigned used; /* Input usage actual DSP produced PCM size */ |
| unsigned addr; |
| unsigned short mfield_sz; /* only useful for data has meta field */ |
| }; |
| |
| #ifdef CONFIG_HAS_EARLYSUSPEND |
| struct audac3_suspend_ctl { |
| struct early_suspend node; |
| struct audio *audio; |
| }; |
| #endif |
| |
| struct audac3_event { |
| struct list_head list; |
| int event_type; |
| union msm_audio_event_payload payload; |
| }; |
| |
| struct audio { |
| struct buffer out[2]; |
| |
| spinlock_t dsp_lock; |
| |
| uint8_t out_head; |
| uint8_t out_tail; |
| uint8_t out_needed; /* number of buffers the dsp is waiting for */ |
| |
| atomic_t out_bytes; |
| |
| struct mutex lock; |
| struct mutex write_lock; |
| wait_queue_head_t write_wait; |
| |
| /* Host PCM section */ |
| struct buffer in[PCM_BUF_MAX_COUNT]; |
| struct mutex read_lock; |
| wait_queue_head_t read_wait; /* Wait queue for read */ |
| char *read_data; /* pointer to reader buffer */ |
| int32_t read_phys; /* physical address of reader buffer */ |
| uint8_t read_next; /* index to input buffers to be read next */ |
| uint8_t fill_next; /* index to buffer that DSP should be filling */ |
| uint8_t pcm_buf_count; /* number of pcm buffer allocated */ |
| /* ---- End of Host PCM section */ |
| |
| struct msm_adsp_module *audplay; |
| struct audmgr audmgr; |
| struct msm_audio_ac3_config ac3_config; |
| |
| /* data allocated for various buffers */ |
| char *data; |
| int32_t phys; /* physical address of write buffer */ |
| void *map_v_read; |
| void *map_v_write; |
| |
| int mfield; /* meta field embedded in data */ |
| int rflush; /* Read flush */ |
| int wflush; /* Write flush */ |
| uint8_t opened; |
| uint8_t enabled; |
| uint8_t running; |
| uint8_t stopped; /* set when stopped, cleared on flush */ |
| uint8_t pcm_feedback; |
| uint8_t buf_refresh; |
| int teos; /* valid only if tunnel mode & no data left for decoder */ |
| enum msm_aud_decoder_state dec_state; /* Represents decoder state */ |
| int rmt_resource_released; |
| |
| const char *module_name; |
| unsigned queue_id; |
| uint16_t dec_id; |
| uint32_t read_ptr_offset; |
| |
| #ifdef CONFIG_HAS_EARLYSUSPEND |
| struct audac3_suspend_ctl suspend_ctl; |
| #endif |
| |
| #ifdef CONFIG_DEBUG_FS |
| struct dentry *dentry; |
| #endif |
| |
| wait_queue_head_t wait; |
| struct list_head free_event_queue; |
| struct list_head event_queue; |
| wait_queue_head_t event_wait; |
| spinlock_t event_queue_lock; |
| struct mutex get_event_lock; |
| int event_abort; |
| |
| int eq_enable; |
| int eq_needs_commit; |
| audpp_cmd_cfg_object_params_eqalizer eq; |
| audpp_cmd_cfg_object_params_volume vol_pan; |
| struct ion_client *client; |
| struct ion_handle *input_buff_handle; |
| struct ion_handle *output_buff_handle; |
| }; |
| |
| static int auddec_dsp_config(struct audio *audio, int enable); |
| static void audpp_cmd_cfg_adec_params(struct audio *audio); |
| static void audpp_cmd_cfg_routing_mode(struct audio *audio); |
| static void audac3_send_data(struct audio *audio, unsigned needed); |
| static void audac3_dsp_event(void *private, unsigned id, uint16_t *msg); |
| static void audac3_config_hostpcm(struct audio *audio); |
| static void audac3_buffer_refresh(struct audio *audio); |
| static void audac3_post_event(struct audio *audio, int type, |
| union msm_audio_event_payload payload); |
| |
| static int rmt_put_resource(struct audio *audio) |
| { |
| struct aud_codec_config_cmd cmd; |
| unsigned short client_idx; |
| |
| cmd.cmd_id = RM_CMD_AUD_CODEC_CFG; |
| cmd.client_id = RM_AUD_CLIENT_ID; |
| cmd.task_id = audio->dec_id; |
| cmd.enable = RMT_DISABLE; |
| cmd.dec_type = AUDDEC_DEC_AC3; |
| client_idx = ((cmd.client_id << 8) | cmd.task_id); |
| |
| return put_adsp_resource(client_idx, &cmd, sizeof(cmd)); |
| } |
| |
| static int rmt_get_resource(struct audio *audio) |
| { |
| struct aud_codec_config_cmd cmd; |
| unsigned short client_idx; |
| |
| cmd.cmd_id = RM_CMD_AUD_CODEC_CFG; |
| cmd.client_id = RM_AUD_CLIENT_ID; |
| cmd.task_id = audio->dec_id; |
| cmd.enable = RMT_ENABLE; |
| cmd.dec_type = AUDDEC_DEC_AC3; |
| client_idx = ((cmd.client_id << 8) | cmd.task_id); |
| return get_adsp_resource(client_idx, &cmd, sizeof(cmd)); |
| } |
| |
| /* must be called with audio->lock held */ |
| static int audac3_enable(struct audio *audio) |
| { |
| struct audmgr_config cfg; |
| int rc; |
| |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| |
| if (audio->enabled) |
| return 0; |
| |
| if (audio->rmt_resource_released == 1) { |
| audio->rmt_resource_released = 0; |
| rc = rmt_get_resource(audio); |
| if (rc) { |
| MM_ERR("ADSP resources are not available for AC3"\ |
| " session 0x%08x on decoder: %d\n Ignoring"\ |
| " error and going ahead with the playback\n", |
| (int)audio, audio->dec_id); |
| } |
| } |
| |
| audio->dec_state = MSM_AUD_DECODER_STATE_NONE; |
| audio->out_tail = 0; |
| audio->out_needed = 0; |
| |
| if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) { |
| cfg.tx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE; |
| cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_48000; |
| cfg.def_method = RPC_AUD_DEF_METHOD_PLAYBACK; |
| cfg.codec = RPC_AUD_DEF_CODEC_AC3; |
| cfg.snd_method = RPC_SND_METHOD_MIDI; |
| |
| rc = audmgr_enable(&audio->audmgr, &cfg); |
| if (rc < 0) |
| return rc; |
| } |
| |
| if (msm_adsp_enable(audio->audplay)) { |
| MM_ERR("msm_adsp_enable(audplay) failed\n"); |
| if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) |
| audmgr_disable(&audio->audmgr); |
| return -ENODEV; |
| } |
| |
| if (audpp_enable(audio->dec_id, audac3_dsp_event, audio)) { |
| MM_ERR("audpp_enable() failed\n"); |
| msm_adsp_disable(audio->audplay); |
| if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) |
| audmgr_disable(&audio->audmgr); |
| return -ENODEV; |
| } |
| audio->enabled = 1; |
| return 0; |
| } |
| |
| /* must be called with audio->lock held */ |
| static int audac3_disable(struct audio *audio) |
| { |
| int rc = 0; |
| if (audio->enabled) { |
| audio->enabled = 0; |
| audio->dec_state = MSM_AUD_DECODER_STATE_NONE; |
| auddec_dsp_config(audio, 0); |
| rc = wait_event_interruptible_timeout(audio->wait, |
| audio->dec_state != MSM_AUD_DECODER_STATE_NONE, |
| msecs_to_jiffies(MSM_AUD_DECODER_WAIT_MS)); |
| if (rc == 0) |
| rc = -ETIMEDOUT; |
| else if (audio->dec_state != MSM_AUD_DECODER_STATE_CLOSE) |
| rc = -EFAULT; |
| else |
| rc = 0; |
| audio->stopped = 1; |
| wake_up(&audio->write_wait); |
| wake_up(&audio->read_wait); |
| msm_adsp_disable(audio->audplay); |
| audpp_disable(audio->dec_id, audio); |
| if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) |
| audmgr_disable(&audio->audmgr); |
| audio->out_needed = 0; |
| rmt_put_resource(audio); |
| audio->rmt_resource_released = 1; |
| } |
| return rc; |
| } |
| |
| /* ------------------- dsp --------------------- */ |
| |
| static void audac3_update_pcm_buf_entry(struct audio *audio, |
| uint32_t *payload) |
| { |
| uint8_t index; |
| unsigned long flags; |
| |
| if (audio->rflush) |
| return; |
| |
| spin_lock_irqsave(&audio->dsp_lock, flags); |
| for (index = 0; index < payload[1]; index++) { |
| if (audio->in[audio->fill_next].addr |
| == payload[2 + index * 2]) { |
| MM_DBG("in[%d] ready\n", audio->fill_next); |
| audio->in[audio->fill_next].used = |
| payload[3 + index * 2]; |
| if ((++audio->fill_next) == audio->pcm_buf_count) |
| audio->fill_next = 0; |
| |
| } else { |
| MM_ERR("expected=%x ret=%x\n", |
| audio->in[audio->fill_next].addr, |
| payload[1 + index * 2]); |
| break; |
| } |
| } |
| if (audio->in[audio->fill_next].used == 0) { |
| audac3_buffer_refresh(audio); |
| } else { |
| MM_DBG("read cannot keep up\n"); |
| audio->buf_refresh = 1; |
| } |
| wake_up(&audio->read_wait); |
| spin_unlock_irqrestore(&audio->dsp_lock, flags); |
| } |
| |
| static void audplay_dsp_event(void *data, unsigned id, size_t len, |
| void (*getevent) (void *ptr, size_t len)) |
| { |
| struct audio *audio = data; |
| uint32_t msg[28]; |
| getevent(msg, sizeof(msg)); |
| |
| MM_DBG("msg_id=%x\n", id); |
| switch (id) { |
| case AUDPLAY_MSG_DEC_NEEDS_DATA: |
| audac3_send_data(audio, 1); |
| break; |
| case AUDPLAY_MSG_BUFFER_UPDATE: |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| audac3_update_pcm_buf_entry(audio, msg); |
| break; |
| case ADSP_MESSAGE_ID: |
| MM_DBG("Received ADSP event: module enable(audplaytask)\n"); |
| break; |
| default: |
| MM_ERR("unexpected message from decoder\n"); |
| } |
| } |
| |
| static void audac3_dsp_event(void *private, unsigned id, uint16_t *msg) |
| { |
| struct audio *audio = private; |
| |
| switch (id) { |
| case AUDPP_MSG_STATUS_MSG:{ |
| unsigned status = msg[1]; |
| |
| switch (status) { |
| case AUDPP_DEC_STATUS_SLEEP: { |
| uint16_t reason = msg[2]; |
| MM_DBG("decoder status:sleep reason =0x%04x\n", |
| reason); |
| if ((reason == AUDPP_MSG_REASON_MEM) |
| || (reason == |
| AUDPP_MSG_REASON_NODECODER)) { |
| audio->dec_state = |
| MSM_AUD_DECODER_STATE_FAILURE; |
| wake_up(&audio->wait); |
| } else if (reason == AUDPP_MSG_REASON_NONE) { |
| /* decoder is in disable state */ |
| audio->dec_state = |
| MSM_AUD_DECODER_STATE_CLOSE; |
| wake_up(&audio->wait); |
| } |
| break; |
| } |
| case AUDPP_DEC_STATUS_INIT: |
| MM_DBG("decoder status: init\n"); |
| if (audio->pcm_feedback) |
| audpp_cmd_cfg_routing_mode(audio); |
| else |
| audpp_cmd_cfg_adec_params(audio); |
| break; |
| |
| case AUDPP_DEC_STATUS_CFG: |
| MM_DBG("decoder status: cfg\n"); |
| break; |
| case AUDPP_DEC_STATUS_PLAY: |
| MM_DBG("decoder status: play\n"); |
| if (audio->pcm_feedback) { |
| audac3_config_hostpcm(audio); |
| audac3_buffer_refresh(audio); |
| } |
| audio->dec_state = |
| MSM_AUD_DECODER_STATE_SUCCESS; |
| wake_up(&audio->wait); |
| break; |
| default: |
| MM_ERR("unknown decoder status\n"); |
| } |
| break; |
| } |
| case AUDPP_MSG_CFG_MSG: |
| if (msg[0] == AUDPP_MSG_ENA_ENA) { |
| MM_DBG("CFG_MSG ENABLE\n"); |
| auddec_dsp_config(audio, 1); |
| audio->out_needed = 0; |
| audio->running = 1; |
| audpp_dsp_set_vol_pan(audio->dec_id, &audio->vol_pan); |
| audpp_dsp_set_eq(audio->dec_id, audio->eq_enable, |
| &audio->eq); |
| audpp_avsync(audio->dec_id, 22050); |
| } else if (msg[0] == AUDPP_MSG_ENA_DIS) { |
| MM_DBG("CFG_MSG DISABLE\n"); |
| audpp_avsync(audio->dec_id, 0); |
| audio->running = 0; |
| } else { |
| MM_DBG("CFG_MSG %d?\n", msg[0]); |
| } |
| break; |
| case AUDPP_MSG_ROUTING_ACK: |
| MM_DBG("ROUTING_ACK\n"); |
| audpp_cmd_cfg_adec_params(audio); |
| break; |
| case AUDPP_MSG_FLUSH_ACK: |
| MM_DBG("FLUSH_ACK\n"); |
| audio->wflush = 0; |
| audio->rflush = 0; |
| wake_up(&audio->write_wait); |
| if (audio->pcm_feedback) |
| audac3_buffer_refresh(audio); |
| break; |
| case AUDPP_MSG_PCMDMAMISSED: |
| MM_DBG("PCMDMAMISSED\n"); |
| audio->teos = 1; |
| wake_up(&audio->write_wait); |
| break; |
| default: |
| MM_ERR("UNKNOWN (%d)\n", id); |
| } |
| |
| } |
| |
| struct msm_adsp_ops audplay_adsp_ops_ac3 = { |
| .event = audplay_dsp_event, |
| }; |
| |
| #define audplay_send_queue0(audio, cmd, len) \ |
| msm_adsp_write(audio->audplay, audio->queue_id, \ |
| cmd, len) |
| |
| static int auddec_dsp_config(struct audio *audio, int enable) |
| { |
| u16 cfg_dec_cmd[AUDPP_CMD_CFG_DEC_TYPE_LEN / sizeof(unsigned short)]; |
| |
| memset(cfg_dec_cmd, 0, sizeof(cfg_dec_cmd)); |
| |
| cfg_dec_cmd[0] = AUDPP_CMD_CFG_DEC_TYPE; |
| if (enable) |
| cfg_dec_cmd[1 + audio->dec_id] = AUDPP_CMD_UPDATDE_CFG_DEC | |
| AUDPP_CMD_ENA_DEC_V | AUDDEC_DEC_AC3; |
| else |
| cfg_dec_cmd[1 + audio->dec_id] = AUDPP_CMD_UPDATDE_CFG_DEC | |
| AUDPP_CMD_DIS_DEC_V; |
| |
| return audpp_send_queue1(&cfg_dec_cmd, sizeof(cfg_dec_cmd)); |
| } |
| static int get_frequency_index(unsigned short frequency) |
| { |
| switch (frequency) { |
| case 48000: return 0; |
| case 44100: return 1; |
| case 32000: return 2; |
| default: return -EINVAL; |
| } |
| } |
| static void audpp_cmd_cfg_adec_params(struct audio *audio) |
| { |
| struct audpp_cmd_cfg_adec_params_ac3 cmd; |
| |
| memset(&cmd, 0, sizeof(cmd)); |
| cmd.common.cmd_id = AUDPP_CMD_CFG_ADEC_PARAMS; |
| /* dsp needs word size */ |
| cmd.common.length = AUDPP_CMD_CFG_ADEC_PARAMS_AC3_LEN >> 1; |
| cmd.common.dec_id = audio->dec_id; |
| cmd.common.input_sampling_frequency = (audio->ac3_config).fsCod; |
| |
| cmd.index[0] = (((audio->ac3_config).numChans << 8) & 0xFF00) | |
| ((audio->ac3_config).wordSize & 0x00FF); |
| |
| cmd.index[1] = (((audio->ac3_config).kCapableMode << 12) & 0xF000) | |
| (((audio->ac3_config).compMode << 8) & 0x0F00) | |
| (((audio->ac3_config).outLfeOn << 4) & 0x00F0) | |
| ((audio->ac3_config).outputMode & 0x000F); |
| |
| cmd.index[2] = ((((audio->ac3_config).stereoMode << 12) & 0xF000) | |
| (((audio->ac3_config).dualMonoMode << 8) & 0x0F00) | |
| ((get_frequency_index((audio->ac3_config).fsCod) << 4) |
| & 0x00F0)) & 0xFFF0; /* last 4 bytes are reserved */ |
| |
| cmd.index[3] = (audio->ac3_config).pcmScaleFac; |
| cmd.index[4] = (audio->ac3_config).dynRngScaleHi; |
| cmd.index[5] = (audio->ac3_config).dynRngScaleLow; |
| |
| cmd.index[6] = (((audio->ac3_config).user_downmix_flag << 8) & 0xFF00)| |
| ((audio->ac3_config).user_karaoke_flag & 0x00FF); |
| |
| cmd.index[7] = (audio->ac3_config).dm_address_high; |
| cmd.index[8] = (audio->ac3_config).dm_address_low; |
| cmd.index[9] = (audio->ac3_config).ko_address_high; |
| cmd.index[10] = (audio->ac3_config).ko_address_high; |
| |
| cmd.index[11] = (((audio->ac3_config).max_rep_count << 1) & 0xFFFE) | |
| ((audio->ac3_config).error_concealment & 0x0001); |
| |
| cmd.index[12] = (((audio->ac3_config).channel_routing_mode[3] << 12) |
| & 0xF000) | |
| (((audio->ac3_config).channel_routing_mode[2] << 8) |
| & 0x0F00) | |
| (((audio->ac3_config).channel_routing_mode[1] << 4) |
| & 0x00F0) | |
| ((audio->ac3_config).channel_routing_mode[0] & 0x000F); |
| |
| cmd.index[13] = ((((audio->ac3_config).channel_routing_mode[5] << 12) |
| & 0xF000) | |
| (((audio->ac3_config).channel_routing_mode[4] << 8) |
| & 0x0F00)) & 0xFF00; /* last 8 bytes are reserved */ |
| |
| audpp_send_queue2(&cmd, sizeof(cmd)); |
| } |
| |
| static void audpp_cmd_cfg_routing_mode(struct audio *audio) |
| { |
| struct audpp_cmd_routing_mode cmd; |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| memset(&cmd, 0, sizeof(cmd)); |
| cmd.cmd_id = AUDPP_CMD_ROUTING_MODE; |
| cmd.object_number = audio->dec_id; |
| if (audio->pcm_feedback) |
| cmd.routing_mode = ROUTING_MODE_FTRT; |
| else |
| cmd.routing_mode = ROUTING_MODE_RT; |
| |
| audpp_send_queue1(&cmd, sizeof(cmd)); |
| } |
| |
| static int audplay_dsp_send_data_avail(struct audio *audio, |
| unsigned idx, unsigned len) |
| { |
| struct audplay_cmd_bitstream_data_avail_nt2 cmd; |
| |
| cmd.cmd_id = AUDPLAY_CMD_BITSTREAM_DATA_AVAIL_NT2; |
| if (audio->mfield) |
| cmd.decoder_id = AUDAC3_METAFIELD_MASK | |
| (audio->out[idx].mfield_sz >> 1); |
| else |
| cmd.decoder_id = audio->dec_id; |
| cmd.buf_ptr = audio->out[idx].addr; |
| cmd.buf_size = len / 2; |
| cmd.partition_number = 0; |
| /* complete writes to the input buffer */ |
| wmb(); |
| return audplay_send_queue0(audio, &cmd, sizeof(cmd)); |
| } |
| |
| static void audac3_buffer_refresh(struct audio *audio) |
| { |
| struct audplay_cmd_buffer_refresh refresh_cmd; |
| |
| refresh_cmd.cmd_id = AUDPLAY_CMD_BUFFER_REFRESH; |
| refresh_cmd.num_buffers = 1; |
| refresh_cmd.buf0_address = audio->in[audio->fill_next].addr; |
| refresh_cmd.buf0_length = audio->in[audio->fill_next].size; |
| |
| refresh_cmd.buf_read_count = 0; |
| MM_DBG("buf0_addr=%x buf0_len=%d\n", refresh_cmd.buf0_address, |
| refresh_cmd.buf0_length); |
| (void)audplay_send_queue0(audio, &refresh_cmd, sizeof(refresh_cmd)); |
| } |
| |
| static void audac3_config_hostpcm(struct audio *audio) |
| { |
| struct audplay_cmd_hpcm_buf_cfg cfg_cmd; |
| |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| cfg_cmd.cmd_id = AUDPLAY_CMD_HPCM_BUF_CFG; |
| cfg_cmd.max_buffers = 1; |
| cfg_cmd.byte_swap = 0; |
| cfg_cmd.hostpcm_config = (0x8000) | (0x4000); |
| cfg_cmd.feedback_frequency = 1; |
| cfg_cmd.partition_number = 0; |
| (void)audplay_send_queue0(audio, &cfg_cmd, sizeof(cfg_cmd)); |
| |
| } |
| |
| static void audac3_send_data(struct audio *audio, unsigned needed) |
| { |
| struct buffer *frame; |
| unsigned long flags; |
| |
| 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); |
| audplay_dsp_send_data_avail(audio, audio->out_tail, |
| frame->used); |
| frame->used = 0xffffffff; |
| audio->out_needed = 0; |
| } |
| } |
| done: |
| spin_unlock_irqrestore(&audio->dsp_lock, flags); |
| } |
| |
| /* ------------------- device --------------------- */ |
| |
| static void audac3_flush(struct audio *audio) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&audio->dsp_lock, flags); |
| audio->out[0].used = 0; |
| audio->out[1].used = 0; |
| audio->out_head = 0; |
| audio->out_tail = 0; |
| audio->out_needed = 0; |
| spin_unlock_irqrestore(&audio->dsp_lock, flags); |
| atomic_set(&audio->out_bytes, 0); |
| } |
| |
| static void audac3_flush_pcm_buf(struct audio *audio) |
| { |
| uint8_t index; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&audio->dsp_lock, flags); |
| for (index = 0; index < PCM_BUF_MAX_COUNT; index++) |
| audio->in[index].used = 0; |
| audio->buf_refresh = 0; |
| audio->read_next = 0; |
| audio->fill_next = 0; |
| spin_unlock_irqrestore(&audio->dsp_lock, flags); |
| } |
| /*check if func to be added to validate user data*/ |
| |
| static void audac3_ioport_reset(struct audio *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); |
| audac3_flush(audio); |
| mutex_unlock(&audio->write_lock); |
| wake_up(&audio->read_wait); |
| mutex_lock(&audio->read_lock); |
| audac3_flush_pcm_buf(audio); |
| mutex_unlock(&audio->read_lock); |
| } |
| |
| static int audac3_events_pending(struct audio *audio) |
| { |
| unsigned long flags; |
| int empty; |
| |
| spin_lock_irqsave(&audio->event_queue_lock, flags); |
| empty = !list_empty(&audio->event_queue); |
| spin_unlock_irqrestore(&audio->event_queue_lock, flags); |
| return empty || audio->event_abort; |
| } |
| |
| static void audac3_reset_event_queue(struct audio *audio) |
| { |
| unsigned long flags; |
| struct audac3_event *drv_evt; |
| struct list_head *ptr, *next; |
| |
| spin_lock_irqsave(&audio->event_queue_lock, flags); |
| list_for_each_safe(ptr, next, &audio->event_queue) { |
| drv_evt = list_first_entry(&audio->event_queue, |
| struct audac3_event, list); |
| list_del(&drv_evt->list); |
| kfree(drv_evt); |
| } |
| list_for_each_safe(ptr, next, &audio->free_event_queue) { |
| drv_evt = list_first_entry(&audio->free_event_queue, |
| struct audac3_event, list); |
| list_del(&drv_evt->list); |
| kfree(drv_evt); |
| } |
| spin_unlock_irqrestore(&audio->event_queue_lock, flags); |
| |
| return; |
| } |
| |
| |
| static long audac3_process_event_req(struct audio *audio, void __user *arg) |
| { |
| long rc; |
| struct msm_audio_event usr_evt; |
| struct audac3_event *drv_evt = NULL; |
| int timeout; |
| unsigned long flags; |
| |
| if (copy_from_user(&usr_evt, arg, sizeof(struct msm_audio_event))) |
| return -EFAULT; |
| |
| timeout = (int) usr_evt.timeout_ms; |
| |
| if (timeout > 0) { |
| rc = wait_event_interruptible_timeout( |
| audio->event_wait, audac3_events_pending(audio), |
| msecs_to_jiffies(timeout)); |
| if (rc == 0) |
| return -ETIMEDOUT; |
| } else { |
| rc = wait_event_interruptible( |
| audio->event_wait, audac3_events_pending(audio)); |
| } |
| |
| if (rc < 0) |
| return rc; |
| |
| if (audio->event_abort) { |
| audio->event_abort = 0; |
| return -ENODEV; |
| } |
| |
| rc = 0; |
| |
| spin_lock_irqsave(&audio->event_queue_lock, flags); |
| if (!list_empty(&audio->event_queue)) { |
| drv_evt = list_first_entry(&audio->event_queue, |
| struct audac3_event, list); |
| list_del(&drv_evt->list); |
| } |
| if (drv_evt) { |
| usr_evt.event_type = drv_evt->event_type; |
| usr_evt.event_payload = drv_evt->payload; |
| list_add_tail(&drv_evt->list, &audio->free_event_queue); |
| } else |
| rc = -1; |
| spin_unlock_irqrestore(&audio->event_queue_lock, flags); |
| |
| if (!rc && copy_to_user(arg, &usr_evt, sizeof(usr_evt))) |
| rc = -EFAULT; |
| |
| return rc; |
| } |
| |
| static int audio_enable_eq(struct audio *audio, int enable) |
| { |
| if (audio->eq_enable == enable && !audio->eq_needs_commit) |
| return 0; |
| |
| audio->eq_enable = enable; |
| |
| if (audio->running) { |
| audpp_dsp_set_eq(audio->dec_id, enable, &audio->eq); |
| audio->eq_needs_commit = 0; |
| } |
| return 0; |
| } |
| |
| static long audac3_ioctl(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| struct audio *audio = file->private_data; |
| int rc = -EINVAL; |
| unsigned long flags = 0; |
| uint16_t enable_mask; |
| int enable; |
| int prev_state; |
| unsigned long ionflag = 0; |
| ion_phys_addr_t addr = 0; |
| struct ion_handle *handle = NULL; |
| int len = 0; |
| |
| MM_DBG("cmd = %d\n", cmd); |
| |
| switch (cmd) { |
| case AUDIO_ENABLE_AUDPP: |
| if (copy_from_user(&enable_mask, (void *) arg, |
| sizeof(enable_mask))) { |
| rc = -EFAULT; |
| break; |
| } |
| |
| spin_lock_irqsave(&audio->dsp_lock, flags); |
| enable = (enable_mask & EQ_ENABLE) ? 1 : 0; |
| audio_enable_eq(audio, enable); |
| spin_unlock_irqrestore(&audio->dsp_lock, flags); |
| rc = 0; |
| break; |
| case AUDIO_SET_VOLUME: |
| spin_lock_irqsave(&audio->dsp_lock, flags); |
| audio->vol_pan.volume = arg; |
| if (audio->running) |
| audpp_dsp_set_vol_pan(audio->dec_id, &audio->vol_pan); |
| spin_unlock_irqrestore(&audio->dsp_lock, flags); |
| rc = 0; |
| break; |
| |
| case AUDIO_SET_PAN: |
| spin_lock_irqsave(&audio->dsp_lock, flags); |
| audio->vol_pan.pan = arg; |
| if (audio->running) |
| audpp_dsp_set_vol_pan(audio->dec_id, &audio->vol_pan); |
| spin_unlock_irqrestore(&audio->dsp_lock, flags); |
| rc = 0; |
| break; |
| |
| case AUDIO_SET_EQ: |
| prev_state = audio->eq_enable; |
| audio->eq_enable = 0; |
| if (copy_from_user(&audio->eq.num_bands, (void *) arg, |
| sizeof(audio->eq) - |
| (AUDPP_CMD_CFG_OBJECT_PARAMS_COMMON_LEN + 2))) { |
| rc = -EFAULT; |
| break; |
| } |
| audio->eq_enable = prev_state; |
| audio->eq_needs_commit = 1; |
| rc = 0; |
| break; |
| } |
| |
| if (-EINVAL != rc) |
| return rc; |
| |
| if (cmd == AUDIO_GET_EVENT) { |
| MM_DBG("AUDIO_GET_EVENT\n"); |
| if (mutex_trylock(&audio->get_event_lock)) { |
| rc = audac3_process_event_req(audio, |
| (void __user *) arg); |
| mutex_unlock(&audio->get_event_lock); |
| } else |
| rc = -EBUSY; |
| return rc; |
| } |
| |
| if (cmd == AUDIO_ABORT_GET_EVENT) { |
| audio->event_abort = 1; |
| wake_up(&audio->event_wait); |
| return 0; |
| } |
| |
| mutex_lock(&audio->lock); |
| switch (cmd) { |
| case AUDIO_START: |
| MM_DBG("AUDIO_START\n"); |
| rc = audac3_enable(audio); |
| if (!rc) { |
| rc = wait_event_interruptible_timeout(audio->wait, |
| audio->dec_state != MSM_AUD_DECODER_STATE_NONE, |
| msecs_to_jiffies(MSM_AUD_DECODER_WAIT_MS)); |
| MM_INFO("dec_state %d rc = %d\n", audio->dec_state, rc); |
| |
| if (audio->dec_state != MSM_AUD_DECODER_STATE_SUCCESS) { |
| MM_ERR("In audio->dec_state !=\n"); |
| rc = -ENODEV; |
| } else |
| rc = 0; |
| } |
| break; |
| case AUDIO_STOP: |
| MM_DBG("AUDIO_STOP\n"); |
| rc = audac3_disable(audio); |
| audac3_ioport_reset(audio); |
| audio->stopped = 0; |
| break; |
| case AUDIO_FLUSH: |
| MM_DBG("AUDIO_FLUSH\n"); |
| audio->rflush = 1; |
| audio->wflush = 1; |
| audac3_ioport_reset(audio); |
| if (audio->running) { |
| audpp_flush(audio->dec_id); |
| 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_SET_CONFIG:{ |
| struct msm_audio_config config; |
| if (copy_from_user |
| (&config, (void *)arg, sizeof(config))) { |
| rc = -EFAULT; |
| break; |
| } |
| audio->mfield = config.meta_field; |
| rc = 0; |
| MM_DBG("AUDIO_SET_CONFIG applicable only"\ |
| " for meta field configuration\n"); |
| break; |
| } |
| case AUDIO_GET_CONFIG:{ |
| struct msm_audio_config config; |
| config.buffer_size = BUFSZ; |
| config.buffer_count = 2; |
| config.sample_rate = (audio->ac3_config).fsCod; |
| config.channel_count = 2; |
| config.meta_field = 0; |
| config.unused[0] = 0; |
| config.unused[1] = 0; |
| config.unused[2] = 0; |
| if (copy_to_user((void *)arg, &config, sizeof(config))) |
| rc = -EFAULT; |
| else |
| rc = 0; |
| break; |
| } |
| case AUDIO_GET_AC3_CONFIG:{ |
| if (copy_to_user((void *)arg, &audio->ac3_config, |
| sizeof(audio->ac3_config))) |
| rc = -EFAULT; |
| else |
| rc = 0; |
| break; |
| } |
| case AUDIO_SET_AC3_CONFIG:{ |
| struct msm_audio_ac3_config usr_config; |
| |
| if (copy_from_user |
| (&usr_config, (void *)arg, |
| sizeof(usr_config))) { |
| rc = -EFAULT; |
| break; |
| } |
| |
| audio->ac3_config = usr_config; |
| rc = 0; |
| break; |
| } |
| case AUDIO_GET_PCM_CONFIG:{ |
| struct msm_audio_pcm_config config; |
| config.pcm_feedback = audio->pcm_feedback; |
| config.buffer_count = PCM_BUF_MAX_COUNT; |
| config.buffer_size = PCM_BUFSZ; |
| if (copy_to_user((void *)arg, &config, sizeof(config))) |
| rc = -EFAULT; |
| else |
| rc = 0; |
| break; |
| } |
| case AUDIO_SET_PCM_CONFIG:{ |
| struct msm_audio_pcm_config config; |
| if (copy_from_user |
| (&config, (void *)arg, sizeof(config))) { |
| rc = -EFAULT; |
| break; |
| } |
| if (config.pcm_feedback != audio->pcm_feedback) { |
| |
| MM_ERR("Not sufficient permission to"\ |
| " change the playback mode\n"); |
| rc = -EACCES; |
| break; |
| |
| } |
| if ((config.buffer_count > PCM_BUF_MAX_COUNT) || |
| (config.buffer_count == 1)) |
| config.buffer_count = PCM_BUF_MAX_COUNT; |
| |
| if (config.buffer_size < PCM_BUFSZ) |
| config.buffer_size = PCM_BUFSZ; |
| |
| /* Check if pcm feedback is required */ |
| if ((config.pcm_feedback) && (!audio->read_data)) { |
| MM_DBG("allocate PCM buf %d\n", |
| config.buffer_count * |
| config.buffer_size); |
| handle = ion_alloc(audio->client, |
| (config.buffer_size * |
| config.buffer_count), |
| SZ_4K, ION_HEAP(ION_AUDIO_HEAP_ID)); |
| if (IS_ERR_OR_NULL(handle)) { |
| MM_ERR("Unable to alloc I/P buffs\n"); |
| audio->input_buff_handle = NULL; |
| rc = -ENOMEM; |
| break; |
| } |
| |
| audio->input_buff_handle = handle; |
| |
| rc = ion_phys(audio->client , |
| handle, &addr, &len); |
| if (rc) { |
| MM_ERR("Invalid phy: %x sz: %x\n", |
| (unsigned int) addr, |
| (unsigned int) len); |
| ion_free(audio->client, handle); |
| audio->input_buff_handle = NULL; |
| rc = -ENOMEM; |
| break; |
| } else { |
| MM_INFO("Got valid phy: %x sz: %x\n", |
| (unsigned int) audio->read_phys, |
| (unsigned int) len); |
| } |
| audio->read_phys = (int32_t)addr; |
| |
| rc = ion_handle_get_flags(audio->client, |
| handle, &ionflag); |
| if (rc) { |
| MM_ERR("could not get flags\n"); |
| ion_free(audio->client, handle); |
| audio->input_buff_handle = NULL; |
| rc = -ENOMEM; |
| break; |
| } |
| |
| audio->map_v_read = ion_map_kernel( |
| audio->client, |
| handle, ionflag); |
| if (IS_ERR(audio->map_v_read)) { |
| MM_ERR("map of read buf failed\n"); |
| ion_free(audio->client, handle); |
| audio->input_buff_handle = NULL; |
| rc = -ENOMEM; |
| } else { |
| uint8_t index; |
| uint32_t offset = 0; |
| audio->read_data = |
| audio->map_v_read; |
| audio->buf_refresh = 0; |
| audio->pcm_buf_count = |
| config.buffer_count; |
| audio->read_next = 0; |
| audio->fill_next = 0; |
| |
| for (index = 0; |
| index < config.buffer_count; |
| index++) { |
| audio->in[index].data = |
| audio->read_data + offset; |
| audio->in[index].addr = |
| audio->read_phys + offset; |
| audio->in[index].size = |
| config.buffer_size; |
| audio->in[index].used = 0; |
| offset += config.buffer_size; |
| } |
| MM_DBG("read buf: phy addr"\ |
| " 0x%08x kernel addr 0x%08x\n", |
| audio->read_phys, |
| (int)audio->read_data); |
| rc = 0; |
| } |
| } else { |
| rc = 0; |
| } |
| break; |
| } |
| case AUDIO_PAUSE: |
| MM_DBG("AUDIO_PAUSE %ld\n", arg); |
| rc = audpp_pause(audio->dec_id, (int) arg); |
| break; |
| default: |
| rc = -EINVAL; |
| } |
| mutex_unlock(&audio->lock); |
| return rc; |
| } |
| |
| /* Only useful in tunnel-mode */ |
| static int audac3_fsync(struct file *file, loff_t a, loff_t b, int datasync) |
| { |
| struct audio *audio = file->private_data; |
| int rc = 0; |
| |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| if (!audio->running || audio->pcm_feedback) { |
| rc = -EINVAL; |
| goto done_nolock; |
| } |
| |
| mutex_lock(&audio->write_lock); |
| |
| rc = wait_event_interruptible(audio->write_wait, |
| (!audio->out[0].used && |
| !audio->out[1].used && |
| audio->out_needed) || audio->wflush); |
| |
| if (rc < 0) |
| goto done; |
| else if (audio->wflush) { |
| rc = -EBUSY; |
| goto done; |
| } |
| |
| /* pcm dmamiss message is sent continously |
| * when decoder is starved so no race |
| * condition concern |
| */ |
| audio->teos = 0; |
| |
| rc = wait_event_interruptible(audio->write_wait, |
| audio->teos || audio->wflush); |
| |
| if (audio->wflush) |
| rc = -EBUSY; |
| |
| done: |
| mutex_unlock(&audio->write_lock); |
| done_nolock: |
| return rc; |
| } |
| |
| static ssize_t audac3_read(struct file *file, char __user *buf, size_t count, |
| loff_t *pos) |
| { |
| struct audio *audio = file->private_data; |
| const char __user *start = buf; |
| int rc = 0; |
| if (!audio->pcm_feedback) { |
| MM_ERR("returning from read as tunnel mode\n"); |
| return 0; |
| /* PCM feedback is not enabled. Nothing to read */ |
| } |
| mutex_lock(&audio->read_lock); |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| while (count > 0) { |
| rc = wait_event_interruptible(audio->read_wait, |
| (audio->in[audio->read_next].used > 0) || |
| (audio->stopped) || (audio->rflush)); |
| |
| MM_DBG("wait terminated count%d\n", count); |
| if (rc < 0) |
| break; |
| if (audio->stopped || audio->rflush) { |
| rc = -EBUSY; |
| break; |
| } |
| if (count < audio->in[audio->read_next].used) { |
| /* Read must happen in frame boundary. Since driver does |
| * not know frame size, read count must be greater or |
| * equal to size of PCM samples |
| */ |
| MM_DBG("read stop - partial frame\n"); |
| break; |
| } else { |
| MM_DBG("read from in[%d]\n", audio->read_next); |
| /* order reads from the output buffer */ |
| rmb(); |
| if (copy_to_user |
| (buf, audio->in[audio->read_next].data, |
| audio->in[audio->read_next].used)) { |
| MM_ERR("invalid addr %x\n", |
| (unsigned int)buf); |
| rc = -EFAULT; |
| break; |
| } |
| count -= audio->in[audio->read_next].used; |
| buf += audio->in[audio->read_next].used; |
| audio->in[audio->read_next].used = 0; |
| if ((++audio->read_next) == audio->pcm_buf_count) |
| audio->read_next = 0; |
| break; |
| /* Force to exit while loop |
| * to prevent output thread |
| * sleep too long if data is |
| * not ready at this moment |
| */ |
| |
| } |
| } |
| /* don't feed output buffer to HW decoder during flushing |
| * buffer refresh command will be sent once flush completes |
| * send buf refresh command here can confuse HW decoder |
| */ |
| if (audio->buf_refresh && !audio->rflush) { |
| audio->buf_refresh = 0; |
| MM_DBG("kick start pcm feedback again\n"); |
| audac3_buffer_refresh(audio); |
| } |
| mutex_unlock(&audio->read_lock); |
| if (buf > start) |
| rc = buf - start; |
| MM_DBG("read %d bytes\n", rc); |
| return rc; |
| } |
| |
| static int audac3_process_eos(struct audio *audio, |
| const char __user *buf_start, unsigned short mfield_size) |
| { |
| int rc = 0; |
| struct buffer *frame; |
| |
| 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; |
| audac3_send_data(audio, 0); |
| |
| done: |
| return rc; |
| } |
| |
| static ssize_t audac3_write(struct file *file, const char __user *buf, |
| size_t count, loff_t *pos) |
| { |
| struct audio *audio = file->private_data; |
| const char __user *start = buf; |
| struct buffer *frame; |
| size_t xfer; |
| char *cpy_ptr; |
| unsigned short mfield_size = 0; |
| int rc = 0, eos_condition = AUDAC3_EOS_NONE; |
| |
| MM_DBG("cnt=%d\n", count); |
| |
| if (count & 1) |
| return -EINVAL; |
| |
| mutex_lock(&audio->write_lock); |
| while (count > 0) { |
| 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) |
| break; |
| if (audio->stopped || audio->wflush) { |
| rc = -EBUSY; |
| break; |
| } |
| |
| if (audio->mfield) { |
| if (buf == start) { |
| /* Processing beginning of user buffer */ |
| if (__get_user(mfield_size, |
| (unsigned short __user *) buf)) { |
| rc = -EFAULT; |
| break; |
| } else if (mfield_size > count) { |
| rc = -EINVAL; |
| break; |
| } |
| MM_DBG("mf offset_val %x\n", mfield_size); |
| if (copy_from_user(cpy_ptr, buf, |
| mfield_size)) { |
| rc = -EFAULT; |
| break; |
| } |
| /* Check if EOS flag is set and buffer has |
| * contains just meta field |
| */ |
| if (cpy_ptr[AUDAC3_EOS_FLG_OFFSET] & |
| AUDAC3_EOS_FLG_MASK) { |
| MM_DBG("eos set\n"); |
| eos_condition = AUDAC3_EOS_SET; |
| if (mfield_size == count) { |
| buf += mfield_size; |
| break; |
| } else |
| cpy_ptr[AUDAC3_EOS_FLG_OFFSET] &= |
| ~AUDAC3_EOS_FLG_MASK; |
| } |
| /* Check EOS to see if */ |
| cpy_ptr += mfield_size; |
| count -= mfield_size; |
| buf += mfield_size; |
| } else { |
| mfield_size = 0; |
| MM_DBG("continuous buffer\n"); |
| } |
| frame->mfield_sz = mfield_size; |
| } |
| |
| xfer = (count > (frame->size - mfield_size)) ? |
| (frame->size - mfield_size) : count; |
| if (copy_from_user(cpy_ptr, buf, xfer)) { |
| rc = -EFAULT; |
| break; |
| } |
| frame->used = xfer + mfield_size; |
| audio->out_head ^= 1; |
| count -= xfer; |
| buf += xfer; |
| audac3_send_data(audio, 0); |
| } |
| if (eos_condition == AUDAC3_EOS_SET) |
| rc = audac3_process_eos(audio, start, mfield_size); |
| mutex_unlock(&audio->write_lock); |
| if (!rc) { |
| if (buf > start) |
| return buf - start; |
| } |
| return rc; |
| } |
| |
| static int audac3_release(struct inode *inode, struct file *file) |
| { |
| struct audio *audio = file->private_data; |
| |
| MM_INFO("audio instance 0x%08x freeing\n", (int)audio); |
| mutex_lock(&audio->lock); |
| audac3_disable(audio); |
| if (audio->rmt_resource_released == 0) |
| rmt_put_resource(audio); |
| audac3_flush(audio); |
| audac3_flush_pcm_buf(audio); |
| msm_adsp_put(audio->audplay); |
| audpp_adec_free(audio->dec_id); |
| #ifdef CONFIG_HAS_EARLYSUSPEND |
| unregister_early_suspend(&audio->suspend_ctl.node); |
| #endif |
| audio->event_abort = 1; |
| wake_up(&audio->event_wait); |
| audac3_reset_event_queue(audio); |
| ion_unmap_kernel(audio->client, audio->output_buff_handle); |
| ion_free(audio->client, audio->output_buff_handle); |
| if (audio->input_buff_handle != NULL) { |
| ion_unmap_kernel(audio->client, audio->input_buff_handle); |
| ion_free(audio->client, audio->input_buff_handle); |
| } |
| ion_client_destroy(audio->client); |
| mutex_unlock(&audio->lock); |
| #ifdef CONFIG_DEBUG_FS |
| if (audio->dentry) |
| debugfs_remove(audio->dentry); |
| #endif |
| kfree(audio); |
| return 0; |
| } |
| |
| #ifdef CONFIG_HAS_EARLYSUSPEND |
| static void audac3_post_event(struct audio *audio, int type, |
| union msm_audio_event_payload payload) |
| { |
| struct audac3_event *e_node = NULL; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&audio->event_queue_lock, flags); |
| |
| if (!list_empty(&audio->free_event_queue)) { |
| e_node = list_first_entry(&audio->free_event_queue, |
| struct audac3_event, list); |
| list_del(&e_node->list); |
| } else { |
| e_node = kmalloc(sizeof(struct audac3_event), GFP_ATOMIC); |
| if (!e_node) { |
| MM_ERR("No mem to post event %d\n", type); |
| spin_unlock_irqrestore(&audio->event_queue_lock, flags); |
| return; |
| } |
| } |
| |
| e_node->event_type = type; |
| e_node->payload = payload; |
| |
| list_add_tail(&e_node->list, &audio->event_queue); |
| spin_unlock_irqrestore(&audio->event_queue_lock, flags); |
| wake_up(&audio->event_wait); |
| } |
| |
| static void audac3_suspend(struct early_suspend *h) |
| { |
| struct audac3_suspend_ctl *ctl = |
| container_of(h, struct audac3_suspend_ctl, node); |
| union msm_audio_event_payload payload; |
| |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| audac3_post_event(ctl->audio, AUDIO_EVENT_SUSPEND, payload); |
| } |
| |
| static void audac3_resume(struct early_suspend *h) |
| { |
| struct audac3_suspend_ctl *ctl = |
| container_of(h, struct audac3_suspend_ctl, node); |
| union msm_audio_event_payload payload; |
| |
| MM_DBG("\n"); /* Macro prints the file name and function */ |
| audac3_post_event(ctl->audio, AUDIO_EVENT_RESUME, payload); |
| } |
| #endif |
| |
| #ifdef CONFIG_DEBUG_FS |
| static ssize_t audac3_debug_open(struct inode *inode, struct file *file) |
| { |
| file->private_data = inode->i_private; |
| return 0; |
| } |
| |
| static ssize_t audac3_debug_read(struct file *file, char __user *buf, |
| size_t count, loff_t *ppos) |
| { |
| const int debug_bufmax = 1024; |
| static char buffer[1024]; |
| int n = 0, i; |
| struct audio *audio = file->private_data; |
| |
| mutex_lock(&audio->lock); |
| n = scnprintf(buffer, debug_bufmax, "opened %d\n", audio->opened); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "enabled %d\n", audio->enabled); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "stopped %d\n", audio->stopped); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "pcm_feedback %d\n", audio->pcm_feedback); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "out_buf_sz %d\n", audio->out[0].size); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "pcm_buf_count %d\n", audio->pcm_buf_count); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "pcm_buf_sz %d\n", audio->in[0].size); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "volume %x\n", audio->vol_pan.volume); |
| mutex_unlock(&audio->lock); |
| /* Following variables are only useful for debugging when |
| * when playback halts unexpectedly. Thus, no mutual exclusion |
| * enforced |
| */ |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "wflush %d\n", audio->wflush); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "rflush %d\n", audio->rflush); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "running %d\n", audio->running); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "dec state %d\n", audio->dec_state); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "out_needed %d\n", audio->out_needed); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "out_head %d\n", audio->out_head); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "out_tail %d\n", audio->out_tail); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "out[0].used %d\n", audio->out[0].used); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "out[1].used %d\n", audio->out[1].used); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "buffer_refresh %d\n", audio->buf_refresh); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "read_next %d\n", audio->read_next); |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "fill_next %d\n", audio->fill_next); |
| for (i = 0; i < audio->pcm_buf_count; i++) |
| n += scnprintf(buffer + n, debug_bufmax - n, |
| "in[%d].size %d\n", i, audio->in[i].used); |
| buffer[n] = 0; |
| return simple_read_from_buffer(buf, count, ppos, buffer, n); |
| } |
| |
| static const struct file_operations audac3_debug_fops = { |
| .read = audac3_debug_read, |
| .open = audac3_debug_open, |
| }; |
| #endif |
| |
| static int audac3_open(struct inode *inode, struct file *file) |
| { |
| struct audio *audio = NULL; |
| int rc, dec_attrb, decid, i; |
| struct audac3_event *e_node = NULL; |
| int len = 0; |
| unsigned long ionflag = 0; |
| ion_phys_addr_t addr = 0; |
| struct ion_handle *handle = NULL; |
| struct ion_client *client = NULL; |
| #ifdef CONFIG_DEBUG_FS |
| /* 4 bytes represents decoder number, 1 byte for terminate string */ |
| char name[sizeof "msm_ac3_" + 5]; |
| #endif |
| |
| /* Allocate audio instance, set to zero */ |
| audio = kzalloc(sizeof(struct audio), GFP_KERNEL); |
| if (!audio) { |
| MM_ERR("no memory to allocate audio instance\n"); |
| rc = -ENOMEM; |
| goto done; |
| } |
| MM_INFO("audio instance 0x%08x created\n", (int)audio); |
| |
| /* Allocate the decoder */ |
| dec_attrb = AUDDEC_DEC_AC3; |
| if ((file->f_mode & FMODE_WRITE) && |
| (file->f_mode & FMODE_READ)) { |
| dec_attrb |= MSM_AUD_MODE_NONTUNNEL; |
| audio->pcm_feedback = NON_TUNNEL_MODE_PLAYBACK; |
| } else if ((file->f_mode & FMODE_WRITE) && |
| !(file->f_mode & FMODE_READ)) { |
| dec_attrb |= MSM_AUD_MODE_TUNNEL; |
| audio->pcm_feedback = TUNNEL_MODE_PLAYBACK; |
| } else { |
| kfree(audio); |
| rc = -EACCES; |
| goto done; |
| } |
| decid = audpp_adec_alloc(dec_attrb, &audio->module_name, |
| &audio->queue_id); |
| |
| if (decid < 0) { |
| MM_ERR("No free decoder available, freeing instance 0x%08x\n", |
| (int)audio); |
| rc = -ENODEV; |
| kfree(audio); |
| goto done; |
| } |
| |
| audio->dec_id = decid & MSM_AUD_DECODER_MASK; |
| |
| client = msm_ion_client_create(UINT_MAX, "Audio_AC3_client"); |
| if (IS_ERR_OR_NULL(client)) { |
| MM_ERR("Unable to create ION client\n"); |
| rc = -ENOMEM; |
| goto client_create_error; |
| } |
| audio->client = client; |
| |
| handle = ion_alloc(client, DMASZ, SZ_4K, |
| ION_HEAP(ION_AUDIO_HEAP_ID)); |
| if (IS_ERR_OR_NULL(handle)) { |
| MM_ERR("Unable to create allocate O/P buffers\n"); |
| rc = -ENOMEM; |
| goto output_buff_alloc_error; |
| } |
| |
| audio->output_buff_handle = handle; |
| |
| rc = ion_phys(client, handle, &addr, &len); |
| if (rc) { |
| MM_ERR("O/P buffers:Invalid phy: %x sz: %x\n", |
| (unsigned int) addr, (unsigned int) len); |
| goto output_buff_get_phys_error; |
| } else { |
| MM_INFO("O/P buffers:valid phy: %x sz: %x\n", |
| (unsigned int) addr, (unsigned int) len); |
| } |
| audio->phys = (int32_t)addr; |
| |
| rc = ion_handle_get_flags(client, handle, &ionflag); |
| if (rc) { |
| MM_ERR("could not get flags for the handle\n"); |
| goto output_buff_get_flags_error; |
| } |
| |
| audio->map_v_write = ion_map_kernel(client, handle, ionflag); |
| if (IS_ERR(audio->map_v_write)) { |
| MM_ERR("could not map write buffers,freeing instance 0x%08x\n", |
| (int)audio); |
| rc = -ENOMEM; |
| goto output_buff_map_error; |
| } |
| audio->data = audio->map_v_write; |
| MM_DBG("write buf: phy addr 0x%08x kernel addr 0x%08x\n", |
| audio->phys, (int)audio->data); |
| |
| rc = msm_adsp_get(audio->module_name, &audio->audplay, |
| &audplay_adsp_ops_ac3, audio); |
| if (rc) { |
| MM_ERR("failed to get %s module, freeing instance 0x%08x\n", |
| audio->module_name, (int)audio); |
| if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) |
| audmgr_close(&audio->audmgr); |
| goto err; |
| } |
| |
| rc = rmt_get_resource(audio); |
| if (rc) { |
| MM_ERR("ADSP resources are not available for AC3 session"\ |
| " 0x%08x on decoder: %d\n", (int)audio, audio->dec_id); |
| if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) |
| audmgr_close(&audio->audmgr); |
| msm_adsp_put(audio->audplay); |
| goto err; |
| } |
| |
| /* Initialize all locks of audio instance */ |
| audio->input_buff_handle = NULL; |
| mutex_init(&audio->lock); |
| mutex_init(&audio->write_lock); |
| mutex_init(&audio->read_lock); |
| mutex_init(&audio->get_event_lock); |
| spin_lock_init(&audio->dsp_lock); |
| init_waitqueue_head(&audio->write_wait); |
| init_waitqueue_head(&audio->read_wait); |
| INIT_LIST_HEAD(&audio->free_event_queue); |
| INIT_LIST_HEAD(&audio->event_queue); |
| init_waitqueue_head(&audio->wait); |
| init_waitqueue_head(&audio->event_wait); |
| spin_lock_init(&audio->event_queue_lock); |
| |
| audio->out[0].data = audio->data + 0; |
| audio->out[0].addr = audio->phys + 0; |
| audio->out[0].size = BUFSZ; |
| |
| audio->out[1].data = audio->data + BUFSZ; |
| audio->out[1].addr = audio->phys + BUFSZ; |
| audio->out[1].size = BUFSZ; |
| |
| audio->vol_pan.volume = 0x3FFF; |
| |
| (audio->ac3_config).wordSize = AUDAC3_DEF_WORDSIZE; |
| (audio->ac3_config).user_downmix_flag = AUDAC3_DEF_USER_DOWNMIX_FLAG; |
| (audio->ac3_config).user_karaoke_flag = AUDAC3_DEF_USER_KARAOKE_FLAG; |
| (audio->ac3_config).error_concealment = AUDAC3_DEF_ERROR_CONCEALMENT; |
| (audio->ac3_config).max_rep_count = AUDAC3_DEF_MAX_REPEAT_COUNT; |
| |
| audac3_flush(audio); |
| |
| file->private_data = audio; |
| audio->opened = 1; |
| #ifdef CONFIG_DEBUG_FS |
| snprintf(name, sizeof name, "msm_ac3_%04x", audio->dec_id); |
| audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, |
| NULL, (void *) audio, &audac3_debug_fops); |
| |
| if (IS_ERR(audio->dentry)) |
| MM_DBG("debugfs_create_file failed\n"); |
| #endif |
| #ifdef CONFIG_HAS_EARLYSUSPEND |
| audio->suspend_ctl.node.level = EARLY_SUSPEND_LEVEL_DISABLE_FB; |
| audio->suspend_ctl.node.resume = audac3_resume; |
| audio->suspend_ctl.node.suspend = audac3_suspend; |
| audio->suspend_ctl.audio = audio; |
| register_early_suspend(&audio->suspend_ctl.node); |
| #endif |
| for (i = 0; i < AUDAC3_EVENT_NUM; i++) { |
| e_node = kmalloc(sizeof(struct audac3_event), GFP_KERNEL); |
| if (e_node) |
| list_add_tail(&e_node->list, &audio->free_event_queue); |
| else { |
| MM_ERR("event pkt alloc failed\n"); |
| break; |
| } |
| } |
| done: |
| return rc; |
| err: |
| ion_unmap_kernel(client, audio->output_buff_handle); |
| output_buff_map_error: |
| output_buff_get_flags_error: |
| output_buff_get_phys_error: |
| ion_free(client, audio->output_buff_handle); |
| output_buff_alloc_error: |
| ion_client_destroy(client); |
| client_create_error: |
| audpp_adec_free(audio->dec_id); |
| kfree(audio); |
| return rc; |
| } |
| |
| static const struct file_operations audio_ac3_fops = { |
| .owner = THIS_MODULE, |
| .open = audac3_open, |
| .release = audac3_release, |
| .read = audac3_read, |
| .write = audac3_write, |
| .unlocked_ioctl = audac3_ioctl, |
| .fsync = audac3_fsync, |
| }; |
| |
| struct miscdevice audio_ac3_misc = { |
| .minor = MISC_DYNAMIC_MINOR, |
| .name = "msm_ac3", |
| .fops = &audio_ac3_fops, |
| }; |
| |
| static int __init audac3_init(void) |
| { |
| return misc_register(&audio_ac3_misc); |
| |
| } |
| |
| static void __exit audac3_exit(void) |
| { |
| misc_deregister(&audio_ac3_misc); |
| } |
| |
| module_init(audac3_init); |
| module_exit(audac3_exit); |
| |
| MODULE_DESCRIPTION("MSM AC3 driver"); |
| MODULE_LICENSE("GPL v2"); |