diff options
Diffstat (limited to 'drivers/staging/dream/qdsp5/audio_aac.c')
| -rw-r--r-- | drivers/staging/dream/qdsp5/audio_aac.c | 1054 |
1 files changed, 0 insertions, 1054 deletions
diff --git a/drivers/staging/dream/qdsp5/audio_aac.c b/drivers/staging/dream/qdsp5/audio_aac.c deleted file mode 100644 index 45f4c78ab6e..00000000000 --- a/drivers/staging/dream/qdsp5/audio_aac.c +++ /dev/null @@ -1,1054 +0,0 @@ -/* arch/arm/mach-msm/qdsp5/audio_aac.c - * - * aac audio decoder device - * - * Copyright (C) 2008 Google, Inc. - * Copyright (C) 2008 HTC Corporation - * Copyright (c) 2008-2009 QUALCOMM USA, INC. - * - * 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 <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/gfp.h> - -#include <linux/delay.h> - -#include <asm/atomic.h> -#include <asm/ioctls.h> -#include "audmgr.h" - -#include <mach/msm_adsp.h> -#include <mach/msm_audio_aac.h> -#include <mach/qdsp5/qdsp5audppcmdi.h> -#include <mach/qdsp5/qdsp5audppmsg.h> -#include <mach/qdsp5/qdsp5audplaycmdi.h> -#include <mach/qdsp5/qdsp5audplaymsg.h> - -/* for queue ids - should be relative to module number*/ -#include "adsp.h" - -#ifdef DEBUG -#define dprintk(format, arg...) \ -printk(KERN_DEBUG format, ## arg) -#else -#define dprintk(format, arg...) do {} while (0) -#endif - -#define BUFSZ 32768 -#define DMASZ (BUFSZ * 2) - -#define AUDPLAY_INVALID_READ_PTR_OFFSET 0xFFFF -#define AUDDEC_DEC_AAC 5 - -#define PCM_BUFSZ_MIN 9600 /* Hold one stereo AAC frame */ -#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 - -struct buffer { - void *data; - unsigned size; - unsigned used; /* Input usage actual DSP produced PCM size */ - unsigned addr; -}; - -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 */ - dma_addr_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; - - /* configuration to use on next enable */ - uint32_t out_sample_rate; - uint32_t out_channel_mode; - struct msm_audio_aac_config aac_config; - struct audmgr audmgr; - - /* data allocated for various buffers */ - char *data; - dma_addr_t phys; - - int rflush; /* Read flush */ - int wflush; /* Write flush */ - int opened; - int enabled; - int running; - int stopped; /* set when stopped, cleared on flush */ - int pcm_feedback; - int buf_refresh; - - int reserved; /* A byte is being reserved */ - char rsv_byte; /* Handle odd length user data */ - - unsigned volume; - - uint16_t dec_id; - uint32_t read_ptr_offset; -}; - -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 audplay_send_data(struct audio *audio, unsigned needed); -static void audplay_config_hostpcm(struct audio *audio); -static void audplay_buffer_refresh(struct audio *audio); -static void audio_dsp_event(void *private, unsigned id, uint16_t *msg); - -/* must be called with audio->lock held */ -static int audio_enable(struct audio *audio) -{ - struct audmgr_config cfg; - int rc; - - dprintk("audio_enable()\n"); - - if (audio->enabled) - return 0; - - audio->out_tail = 0; - audio->out_needed = 0; - - 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_AAC; - cfg.snd_method = RPC_SND_METHOD_MIDI; - - rc = audmgr_enable(&audio->audmgr, &cfg); - if (rc < 0) - return rc; - - if (msm_adsp_enable(audio->audplay)) { - pr_err("audio: msm_adsp_enable(audplay) failed\n"); - audmgr_disable(&audio->audmgr); - return -ENODEV; - } - - if (audpp_enable(audio->dec_id, audio_dsp_event, audio)) { - pr_err("audio: audpp_enable() failed\n"); - msm_adsp_disable(audio->audplay); - audmgr_disable(&audio->audmgr); - return -ENODEV; - } - audio->enabled = 1; - return 0; -} - -/* must be called with audio->lock held */ -static int audio_disable(struct audio *audio) -{ - dprintk("audio_disable()\n"); - if (audio->enabled) { - audio->enabled = 0; - auddec_dsp_config(audio, 0); - wake_up(&audio->write_wait); - wake_up(&audio->read_wait); - msm_adsp_disable(audio->audplay); - audpp_disable(audio->dec_id, audio); - audmgr_disable(&audio->audmgr); - audio->out_needed = 0; - } - return 0; -} - -/* ------------------- dsp --------------------- */ -static void audio_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]) { - dprintk("audio_update_pcm_buf_entry: 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 { - pr_err - ("audio_update_pcm_buf_entry: expected=%x ret=%x\n" - , audio->in[audio->fill_next].addr, - payload[1 + index * 2]); - break; - } - } - if (audio->in[audio->fill_next].used == 0) { - audplay_buffer_refresh(audio); - } else { - dprintk("audio_update_pcm_buf_entry: 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)); - - dprintk("audplay_dsp_event: msg_id=%x\n", id); - - switch (id) { - case AUDPLAY_MSG_DEC_NEEDS_DATA: - audplay_send_data(audio, 1); - break; - - case AUDPLAY_MSG_BUFFER_UPDATE: - audio_update_pcm_buf_entry(audio, msg); - break; - - default: - pr_err("unexpected message from decoder \n"); - } -} - -static void audio_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: - dprintk("decoder status: sleep \n"); - break; - - case AUDPP_DEC_STATUS_INIT: - dprintk("decoder status: init \n"); - audpp_cmd_cfg_routing_mode(audio); - break; - - case AUDPP_DEC_STATUS_CFG: - dprintk("decoder status: cfg \n"); - break; - case AUDPP_DEC_STATUS_PLAY: - dprintk("decoder status: play \n"); - if (audio->pcm_feedback) { - audplay_config_hostpcm(audio); - audplay_buffer_refresh(audio); - } - break; - default: - pr_err("unknown decoder status \n"); - } - break; - } - case AUDPP_MSG_CFG_MSG: - if (msg[0] == AUDPP_MSG_ENA_ENA) { - dprintk("audio_dsp_event: CFG_MSG ENABLE\n"); - auddec_dsp_config(audio, 1); - audio->out_needed = 0; - audio->running = 1; - audpp_set_volume_and_pan(audio->dec_id, audio->volume, - 0); - audpp_avsync(audio->dec_id, 22050); - } else if (msg[0] == AUDPP_MSG_ENA_DIS) { - dprintk("audio_dsp_event: CFG_MSG DISABLE\n"); - audpp_avsync(audio->dec_id, 0); - audio->running = 0; - } else { - pr_err("audio_dsp_event: CFG_MSG %d?\n", msg[0]); - } - break; - case AUDPP_MSG_ROUTING_ACK: - dprintk("audio_dsp_event: ROUTING_ACK mode=%d\n", msg[1]); - audpp_cmd_cfg_adec_params(audio); - break; - - case AUDPP_MSG_FLUSH_ACK: - dprintk("%s: FLUSH_ACK\n", __func__); - audio->wflush = 0; - audio->rflush = 0; - if (audio->pcm_feedback) - audplay_buffer_refresh(audio); - break; - - default: - pr_err("audio_dsp_event: UNKNOWN (%d)\n", id); - } - -} - -struct msm_adsp_ops audplay_adsp_ops_aac = { - .event = audplay_dsp_event, -}; - -#define audplay_send_queue0(audio, cmd, len) \ - msm_adsp_write(audio->audplay, QDSP_uPAudPlay0BitStreamCtrlQueue, \ - cmd, len) - -static int auddec_dsp_config(struct audio *audio, int enable) -{ - audpp_cmd_cfg_dec_type cmd; - - memset(&cmd, 0, sizeof(cmd)); - cmd.cmd_id = AUDPP_CMD_CFG_DEC_TYPE; - if (enable) - cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | - AUDPP_CMD_ENA_DEC_V | AUDDEC_DEC_AAC; - else - cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | AUDPP_CMD_DIS_DEC_V; - - return audpp_send_queue1(&cmd, sizeof(cmd)); -} - -static void audpp_cmd_cfg_adec_params(struct audio *audio) -{ - audpp_cmd_cfg_adec_params_aac cmd; - - memset(&cmd, 0, sizeof(cmd)); - cmd.common.cmd_id = AUDPP_CMD_CFG_ADEC_PARAMS; - cmd.common.length = AUDPP_CMD_CFG_ADEC_PARAMS_AAC_LEN; - cmd.common.dec_id = audio->dec_id; - cmd.common.input_sampling_frequency = audio->out_sample_rate; - cmd.format = audio->aac_config.format; - cmd.audio_object = audio->aac_config.audio_object; - cmd.ep_config = audio->aac_config.ep_config; - cmd.aac_section_data_resilience_flag = - audio->aac_config.aac_section_data_resilience_flag; - cmd.aac_scalefactor_data_resilience_flag = - audio->aac_config.aac_scalefactor_data_resilience_flag; - cmd.aac_spectral_data_resilience_flag = - audio->aac_config.aac_spectral_data_resilience_flag; - cmd.sbr_on_flag = audio->aac_config.sbr_on_flag; - cmd.sbr_ps_on_flag = audio->aac_config.sbr_ps_on_flag; - cmd.channel_configuration = audio->aac_config.channel_configuration; - - audpp_send_queue2(&cmd, sizeof(cmd)); -} - -static void audpp_cmd_cfg_routing_mode(struct audio *audio) -{ - struct audpp_cmd_routing_mode cmd; - dprintk("audpp_cmd_cfg_routing_mode()\n"); - 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) -{ - audplay_cmd_bitstream_data_avail cmd; - - cmd.cmd_id = AUDPLAY_CMD_BITSTREAM_DATA_AVAIL; - cmd.decoder_id = audio->dec_id; - cmd.buf_ptr = audio->out[idx].addr; - cmd.buf_size = len / 2; - cmd.partition_number = 0; - return audplay_send_queue0(audio, &cmd, sizeof(cmd)); -} - -static void audplay_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 - - (audio->in[audio->fill_next].size % 1024); /* AAC frame size */ - refresh_cmd.buf_read_count = 0; - dprintk("audplay_buffer_fresh: 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 audplay_config_hostpcm(struct audio *audio) -{ - struct audplay_cmd_hpcm_buf_cfg cfg_cmd; - - dprintk("audplay_config_hostpcm()\n"); - cfg_cmd.cmd_id = AUDPLAY_CMD_HPCM_BUF_CFG; - cfg_cmd.max_buffers = audio->pcm_buf_count; - 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 audplay_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) { - dprintk("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); -/* printk("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 audio_flush(struct audio *audio) -{ - audio->out[0].used = 0; - audio->out[1].used = 0; - audio->out_head = 0; - audio->out_tail = 0; - audio->reserved = 0; - audio->out_needed = 0; - atomic_set(&audio->out_bytes, 0); -} - -static void audio_flush_pcm_buf(struct audio *audio) -{ - uint8_t index; - - 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; -} - -static int audaac_validate_usr_config(struct msm_audio_aac_config *config) -{ - int ret_val = -1; - - if (config->format != AUDIO_AAC_FORMAT_ADTS && - config->format != AUDIO_AAC_FORMAT_RAW && - config->format != AUDIO_AAC_FORMAT_PSUEDO_RAW && - config->format != AUDIO_AAC_FORMAT_LOAS) - goto done; - - if (config->audio_object != AUDIO_AAC_OBJECT_LC && - config->audio_object != AUDIO_AAC_OBJECT_LTP && - config->audio_object != AUDIO_AAC_OBJECT_ERLC) - goto done; - - if (config->audio_object == AUDIO_AAC_OBJECT_ERLC) { - if (config->ep_config > 3) - goto done; - if (config->aac_scalefactor_data_resilience_flag != - AUDIO_AAC_SCA_DATA_RES_OFF && - config->aac_scalefactor_data_resilience_flag != - AUDIO_AAC_SCA_DATA_RES_ON) - goto done; - if (config->aac_section_data_resilience_flag != - AUDIO_AAC_SEC_DATA_RES_OFF && - config->aac_section_data_resilience_flag != - AUDIO_AAC_SEC_DATA_RES_ON) - goto done; - if (config->aac_spectral_data_resilience_flag != - AUDIO_AAC_SPEC_DATA_RES_OFF && - config->aac_spectral_data_resilience_flag != - AUDIO_AAC_SPEC_DATA_RES_ON) - goto done; - } else { - config->aac_section_data_resilience_flag = - AUDIO_AAC_SEC_DATA_RES_OFF; - config->aac_scalefactor_data_resilience_flag = - AUDIO_AAC_SCA_DATA_RES_OFF; - config->aac_spectral_data_resilience_flag = - AUDIO_AAC_SPEC_DATA_RES_OFF; - } - - if (config->sbr_on_flag != AUDIO_AAC_SBR_ON_FLAG_OFF && - config->sbr_on_flag != AUDIO_AAC_SBR_ON_FLAG_ON) - goto done; - - if (config->sbr_ps_on_flag != AUDIO_AAC_SBR_PS_ON_FLAG_OFF && - config->sbr_ps_on_flag != AUDIO_AAC_SBR_PS_ON_FLAG_ON) - goto done; - - if (config->dual_mono_mode > AUDIO_AAC_DUAL_MONO_PL_SR) - goto done; - - if (config->channel_configuration > 2) - goto done; - - ret_val = 0; - done: - return ret_val; -} - -static void audio_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); - audio_flush(audio); - mutex_unlock(&audio->write_lock); - wake_up(&audio->read_wait); - mutex_lock(&audio->read_lock); - audio_flush_pcm_buf(audio); - mutex_unlock(&audio->read_lock); -} - -static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - struct audio *audio = file->private_data; - int rc = 0; - - dprintk("audio_ioctl() cmd = %d\n", cmd); - - if (cmd == AUDIO_GET_STATS) { - struct msm_audio_stats stats; - stats.byte_count = audpp_avsync_byte_count(audio->dec_id); - stats.sample_count = audpp_avsync_sample_count(audio->dec_id); - if (copy_to_user((void *)arg, &stats, sizeof(stats))) - return -EFAULT; - return 0; - } - if (cmd == AUDIO_SET_VOLUME) { - unsigned long flags; - spin_lock_irqsave(&audio->dsp_lock, flags); - audio->volume = arg; - if (audio->running) - audpp_set_volume_and_pan(audio->dec_id, arg, 0); - spin_unlock_irqrestore(&audio->dsp_lock, flags); - return 0; - } - mutex_lock(&audio->lock); - switch (cmd) { - case AUDIO_START: - rc = audio_enable(audio); - break; - case AUDIO_STOP: - rc = audio_disable(audio); - audio->stopped = 1; - audio_ioport_reset(audio); - audio->stopped = 0; - break; - case AUDIO_FLUSH: - dprintk("%s: AUDIO_FLUSH\n", __func__); - audio->rflush = 1; - audio->wflush = 1; - audio_ioport_reset(audio); - if (audio->running) - audpp_flush(audio->dec_id); - 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; - } - - if (config.channel_count == 1) { - config.channel_count = - AUDPP_CMD_PCM_INTF_MONO_V; - } else if (config.channel_count == 2) { - config.channel_count = - AUDPP_CMD_PCM_INTF_STEREO_V; - } else { - rc = -EINVAL; - break; - } - - audio->out_sample_rate = config.sample_rate; - audio->out_channel_mode = config.channel_count; - rc = 0; - break; - } - case AUDIO_GET_CONFIG:{ - struct msm_audio_config config; - config.buffer_size = BUFSZ; - config.buffer_count = 2; - config.sample_rate = audio->out_sample_rate; - if (audio->out_channel_mode == - AUDPP_CMD_PCM_INTF_MONO_V) { - config.channel_count = 1; - } else { - config.channel_count = 2; - } - config.unused[0] = 0; - config.unused[1] = 0; - config.unused[2] = 0; - config.unused[3] = 0; - if (copy_to_user((void *)arg, &config, - sizeof(config))) - rc = -EFAULT; - else - rc = 0; - - break; - } - case AUDIO_GET_AAC_CONFIG:{ - if (copy_to_user((void *)arg, &audio->aac_config, - sizeof(audio->aac_config))) - rc = -EFAULT; - else - rc = 0; - break; - } - case AUDIO_SET_AAC_CONFIG:{ - struct msm_audio_aac_config usr_config; - - if (copy_from_user - (&usr_config, (void *)arg, - sizeof(usr_config))) { - rc = -EFAULT; - break; - } - - if (audaac_validate_usr_config(&usr_config) == 0) { - audio->aac_config = usr_config; - rc = 0; - } else - rc = -EINVAL; - - break; - } - case AUDIO_GET_PCM_CONFIG:{ - struct msm_audio_pcm_config config; - config.pcm_feedback = 0; - config.buffer_count = PCM_BUF_MAX_COUNT; - config.buffer_size = PCM_BUFSZ_MIN; - 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.buffer_count > PCM_BUF_MAX_COUNT) || - (config.buffer_count == 1)) - config.buffer_count = PCM_BUF_MAX_COUNT; - - if (config.buffer_size < PCM_BUFSZ_MIN) - config.buffer_size = PCM_BUFSZ_MIN; - - /* Check if pcm feedback is required */ - if ((config.pcm_feedback) && (!audio->read_data)) { - dprintk("ioctl: allocate PCM buffer %d\n", - config.buffer_count * - config.buffer_size); - audio->read_data = - dma_alloc_coherent(NULL, - config.buffer_size * - config.buffer_count, - &audio->read_phys, - GFP_KERNEL); - if (!audio->read_data) { - pr_err("audio_aac: buf alloc fail\n"); - rc = -1; - } else { - uint8_t index; - uint32_t offset = 0; - audio->pcm_feedback = 1; - 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; - } - rc = 0; - } - } else { - rc = 0; - } - break; - } - case AUDIO_PAUSE: - dprintk("%s: AUDIO_PAUSE %ld\n", __func__, arg); - rc = audpp_pause(audio->dec_id, (int) arg); - break; - default: - rc = -EINVAL; - } - mutex_unlock(&audio->lock); - return rc; -} - -static ssize_t audio_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) - return 0; /* PCM feedback is not enabled. Nothing to read */ - - mutex_lock(&audio->read_lock); - dprintk("audio_read() %d \n", count); - while (count > 0) { - rc = wait_event_interruptible(audio->read_wait, - (audio->in[audio->read_next]. - used > 0) || (audio->stopped) - || (audio->rflush)); - - 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 */ - dprintk("audio_read: no partial frame done reading\n"); - break; - } else { - dprintk("audio_read: read from in[%d]\n", - audio->read_next); - if (copy_to_user - (buf, audio->in[audio->read_next].data, - audio->in[audio->read_next].used)) { - pr_err("audio_read: 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; - if (audio->in[audio->read_next].used == 0) - break; /* No data ready at this moment - * Exit while loop to prevent - * output thread sleep too long - */ - } - } - - /* 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; - dprintk("audio_read: kick start pcm feedback again\n"); - audplay_buffer_refresh(audio); - } - - mutex_unlock(&audio->read_lock); - - if (buf > start) - rc = buf - start; - - dprintk("audio_read: read %d bytes\n", rc); - return rc; -} - -static ssize_t audio_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; - int rc = 0; - unsigned dsize; - - mutex_lock(&audio->write_lock); - while (count > 0) { - frame = audio->out + audio->out_head; - cpy_ptr = frame->data; - dsize = 0; - 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->reserved) { - dprintk("%s: append reserved byte %x\n", - __func__, audio->rsv_byte); - *cpy_ptr = audio->rsv_byte; - xfer = (count > (frame->size - 1)) ? - frame->size - 1 : count; - cpy_ptr++; - dsize = 1; - audio->reserved = 0; - } else - xfer = (count > frame->size) ? frame->size : count; - - if (copy_from_user(cpy_ptr, buf, xfer)) { - rc = -EFAULT; - break; - } - - dsize += xfer; - if (dsize & 1) { - audio->rsv_byte = ((char *) frame->data)[dsize - 1]; - dprintk("%s: odd length buf reserve last byte %x\n", - __func__, audio->rsv_byte); - audio->reserved = 1; - dsize--; - } - count -= xfer; - buf += xfer; - - if (dsize > 0) { - audio->out_head ^= 1; - frame->used = dsize; - audplay_send_data(audio, 0); - } - } - mutex_unlock(&audio->write_lock); - if (buf > start) - return buf - start; - return rc; -} - -static int audio_release(struct inode *inode, struct file *file) -{ - struct audio *audio = file->private_data; - - dprintk("audio_release()\n"); - - mutex_lock(&audio->lock); - audio_disable(audio); - audio_flush(audio); - audio_flush_pcm_buf(audio); - msm_adsp_put(audio->audplay); - audio->audplay = NULL; - audio->opened = 0; - audio->reserved = 0; - dma_free_coherent(NULL, DMASZ, audio->data, audio->phys); - audio->data = NULL; - if (audio->read_data != NULL) { - dma_free_coherent(NULL, - audio->in[0].size * audio->pcm_buf_count, - audio->read_data, audio->read_phys); - audio->read_data = NULL; - } - audio->pcm_feedback = 0; - mutex_unlock(&audio->lock); - return 0; -} - -static struct audio the_aac_audio; - -static int audio_open(struct inode *inode, struct file *file) -{ - struct audio *audio = &the_aac_audio; - int rc; - - mutex_lock(&audio->lock); - - if (audio->opened) { - pr_err("audio: busy\n"); - rc = -EBUSY; - goto done; - } - - if (!audio->data) { - audio->data = dma_alloc_coherent(NULL, DMASZ, - &audio->phys, GFP_KERNEL); - if (!audio->data) { - pr_err("audio: could not allocate DMA buffers\n"); - rc = -ENOMEM; - goto done; - } - } - - rc = audmgr_open(&audio->audmgr); - if (rc) - goto done; - - rc = msm_adsp_get("AUDPLAY0TASK", &audio->audplay, - &audplay_adsp_ops_aac, audio); - if (rc) { - pr_err("audio: failed to get audplay0 dsp module\n"); - goto done; - } - audio->out_sample_rate = 44100; - audio->out_channel_mode = AUDPP_CMD_PCM_INTF_STEREO_V; - audio->aac_config.format = AUDIO_AAC_FORMAT_ADTS; - audio->aac_config.audio_object = AUDIO_AAC_OBJECT_LC; - audio->aac_config.ep_config = 0; - audio->aac_config.aac_section_data_resilience_flag = - AUDIO_AAC_SEC_DATA_RES_OFF; - audio->aac_config.aac_scalefactor_data_resilience_flag = - AUDIO_AAC_SCA_DATA_RES_OFF; - audio->aac_config.aac_spectral_data_resilience_flag = - AUDIO_AAC_SPEC_DATA_RES_OFF; - audio->aac_config.sbr_on_flag = AUDIO_AAC_SBR_ON_FLAG_ON; - audio->aac_config.sbr_ps_on_flag = AUDIO_AAC_SBR_PS_ON_FLAG_ON; - audio->aac_config.dual_mono_mode = AUDIO_AAC_DUAL_MONO_PL_SR; - audio->aac_config.channel_configuration = 2; - audio->dec_id = 0; - - 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->volume = 0x2000; /* Q13 1.0 */ - - audio_flush(audio); - - file->private_data = audio; - audio->opened = 1; - rc = 0; -done: - mutex_unlock(&audio->lock); - return rc; -} - -static struct file_operations audio_aac_fops = { - .owner = THIS_MODULE, - .open = audio_open, - .release = audio_release, - .read = audio_read, - .write = audio_write, - .unlocked_ioctl = audio_ioctl, - .llseek = noop_llseek, -}; - -struct miscdevice audio_aac_misc = { - .minor = MISC_DYNAMIC_MINOR, - .name = "msm_aac", - .fops = &audio_aac_fops, -}; - -static int __init audio_init(void) -{ - mutex_init(&the_aac_audio.lock); - mutex_init(&the_aac_audio.write_lock); - mutex_init(&the_aac_audio.read_lock); - spin_lock_init(&the_aac_audio.dsp_lock); - init_waitqueue_head(&the_aac_audio.write_wait); - init_waitqueue_head(&the_aac_audio.read_wait); - the_aac_audio.read_data = NULL; - return misc_register(&audio_aac_misc); -} - -device_initcall(audio_init); |