+++ /dev/null
-/* linux/arch/arm/mach-msm/qdsp5/audio_amrnb.c
- *
- * amrnb audio decoder device
- *
- * Copyright (c) 2008 QUALCOMM USA, INC.
- *
- * Based on the mp3 native driver in arch/arm/mach-msm/qdsp5/audio_mp3.c
- *
- * Copyright (C) 2008 Google, Inc.
- * Copyright (C) 2008 HTC Corporation
- *
- * All source code in this file is licensed under the following license except
- * where indicated.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- * 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 <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 <mach/msm_adsp.h>
-#include <linux/msm_audio.h>
-#include "audmgr.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"
-
-#define DEBUG
-#ifdef DEBUG
-#define dprintk(format, arg...) \
-printk(KERN_DEBUG format, ## arg)
-#else
-#define dprintk(format, arg...) do {} while (0)
-#endif
-
-#define BUFSZ 1024 /* Hold minimum 700ms voice data */
-#define DMASZ (BUFSZ * 2)
-
-#define AUDPLAY_INVALID_READ_PTR_OFFSET 0xFFFF
-#define AUDDEC_DEC_AMRNB 10
-
-#define PCM_BUFSZ_MIN 1600 /* 100ms worth of data */
-#define AMRNB_DECODED_FRSZ 320 /* AMR-NB 20ms 8KHz mono PCM size */
-#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;
-
- struct audmgr audmgr;
-
- /* data allocated for various buffers */
- char *data;
- dma_addr_t phys;
-
- uint8_t opened:1;
- uint8_t enabled:1;
- uint8_t running:1;
- uint8_t stopped:1; /* set when stopped, cleared on flush */
- uint8_t pcm_feedback:1;
- uint8_t buf_refresh:1;
-
- unsigned volume;
-
- uint16_t dec_id;
- uint32_t read_ptr_offset;
-};
-
-struct audpp_cmd_cfg_adec_params_amrnb {
- audpp_cmd_cfg_adec_params_common common;
- unsigned short stereo_cfg;
-} __attribute__((packed)) ;
-
-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 audamrnb_send_data(struct audio *audio, unsigned needed);
-static void audamrnb_config_hostpcm(struct audio *audio);
-static void audamrnb_buffer_refresh(struct audio *audio);
-static void audamrnb_dsp_event(void *private, unsigned id, uint16_t *msg);
-
-/* must be called with audio->lock held */
-static int audamrnb_enable(struct audio *audio)
-{
- struct audmgr_config cfg;
- int rc;
-
- dprintk("audamrnb_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_AMR_NB;
- 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, audamrnb_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 audamrnb_disable(struct audio *audio)
-{
- dprintk("audamrnb_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 audamrnb_update_pcm_buf_entry(struct audio *audio,
- uint32_t *payload)
-{
- uint8_t index;
- unsigned long flags;
-
- 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("audamrnb_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
- ("audamrnb_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) {
- audamrnb_buffer_refresh(audio);
- } else {
- dprintk("audamrnb_update_pcm_buf_entry: read cannot keep up\n");
- audio->buf_refresh = 1;
- }
-
- spin_unlock_irqrestore(&audio->dsp_lock, flags);
- wake_up(&audio->read_wait);
-}
-
-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:
- audamrnb_send_data(audio, 1);
- break;
-
- case AUDPLAY_MSG_BUFFER_UPDATE:
- audamrnb_update_pcm_buf_entry(audio, msg);
- break;
-
- default:
- pr_err("unexpected message from decoder \n");
- }
-}
-
-static void audamrnb_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) {
- audamrnb_config_hostpcm(audio);
- audamrnb_buffer_refresh(audio);
- }
- break;
- default:
- pr_err("unknown decoder status \n");
- break;
- }
- break;
- }
- case AUDPP_MSG_CFG_MSG:
- if (msg[0] == AUDPP_MSG_ENA_ENA) {
- dprintk("audamrnb_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("audamrnb_dsp_event: CFG_MSG DISABLE\n");
- audpp_avsync(audio->dec_id, 0);
- audio->running = 0;
- } else {
- pr_err("audamrnb_dsp_event: CFG_MSG %d?\n", msg[0]);
- }
- break;
- case AUDPP_MSG_ROUTING_ACK:
- dprintk("audamrnb_dsp_event: ROUTING_ACK mode=%d\n", msg[1]);
- audpp_cmd_cfg_adec_params(audio);
- break;
-
- default:
- pr_err("audamrnb_dsp_event: UNKNOWN (%d)\n", id);
- }
-
-}
-
-struct msm_adsp_ops audplay_adsp_ops_amrnb = {
- .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_AMRNB;
- 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)
-{
- struct audpp_cmd_cfg_adec_params_amrnb cmd;
-
- memset(&cmd, 0, sizeof(cmd));
- cmd.common.cmd_id = AUDPP_CMD_CFG_ADEC_PARAMS;
- cmd.common.length = AUDPP_CMD_CFG_ADEC_PARAMS_V13K_LEN;
- cmd.common.dec_id = audio->dec_id;
- cmd.common.input_sampling_frequency = 8000;
- cmd.stereo_cfg = AUDPP_CMD_PCM_INTF_MONO_V;
-
- 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 audamrnb_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 % AMRNB_DECODED_FRSZ);
- 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 audamrnb_config_hostpcm(struct audio *audio)
-{
- struct audplay_cmd_hpcm_buf_cfg cfg_cmd;
-
- dprintk("audamrnb_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 audamrnb_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) {
- /* 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) {
- 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 audamrnb_flush(struct audio *audio)
-{
- audio->out[0].used = 0;
- audio->out[1].used = 0;
- audio->out_head = 0;
- audio->out_tail = 0;
- audio->stopped = 0;
- atomic_set(&audio->out_bytes, 0);
-}
-
-static void audamrnb_flush_pcm_buf(struct audio *audio)
-{
- uint8_t index;
-
- for (index = 0; index < PCM_BUF_MAX_COUNT; index++)
- audio->in[index].used = 0;
-
- audio->read_next = 0;
- audio->fill_next = 0;
-}
-
-static long audamrnb_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- struct audio *audio = file->private_data;
- int rc = 0;
-
- dprintk("audamrnb_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 = audamrnb_enable(audio);
- break;
- case AUDIO_STOP:
- rc = audamrnb_disable(audio);
- audio->stopped = 1;
- break;
- case AUDIO_FLUSH:
- if (audio->stopped) {
- /* Make sure we're stopped and we wake any threads
- * that might be blocked holding the write_lock.
- * While audio->stopped write threads will always
- * exit immediately.
- */
- wake_up(&audio->write_wait);
- mutex_lock(&audio->write_lock);
- audamrnb_flush(audio);
- mutex_unlock(&audio->write_lock);
- wake_up(&audio->read_wait);
- mutex_lock(&audio->read_lock);
- audamrnb_flush_pcm_buf(audio);
- mutex_unlock(&audio->read_lock);
- break;
- }
-
- case AUDIO_SET_CONFIG:{
- dprintk("AUDIO_SET_CONFIG not applicable \n");
- break;
- }
- case AUDIO_GET_CONFIG:{
- struct msm_audio_config config;
- config.buffer_size = BUFSZ;
- config.buffer_count = 2;
- config.sample_rate = 8000;
- config.channel_count = 1;
- 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_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("audamrnb_ioctl: allocate PCM buf %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("audamrnb_ioctl: no mem for pcm buf\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;
- }
- default:
- rc = -EINVAL;
- }
- mutex_unlock(&audio->lock);
- return rc;
-}
-
-static ssize_t audamrnb_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("audamrnb_read() %d \n", count);
- while (count > 0) {
- rc = wait_event_interruptible(audio->read_wait,
- (audio->in[audio->read_next].
- used > 0) || (audio->stopped));
-
- if (rc < 0)
- break;
-
- if (audio->stopped) {
- 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("audamrnb_read:read stop - partial frame\n");
- break;
- } else {
- dprintk("audamrnb_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("audamrnb_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->buf_refresh) {
- audio->buf_refresh = 0;
- dprintk("audamrnb_read: kick start pcm feedback again\n");
- audamrnb_buffer_refresh(audio);
- }
-
- mutex_unlock(&audio->read_lock);
-
- if (buf > start)
- rc = buf - start;
-
- dprintk("audamrnb_read: read %d bytes\n", rc);
- return rc;
-}
-
-static ssize_t audamrnb_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;
- int rc = 0;
-
- if (count & 1)
- return -EINVAL;
- dprintk("audamrnb_write() \n");
- mutex_lock(&audio->write_lock);
- while (count > 0) {
- frame = audio->out + audio->out_head;
- rc = wait_event_interruptible(audio->write_wait,
- (frame->used == 0)
- || (audio->stopped));
- dprintk("audamrnb_write() buffer available\n");
- if (rc < 0)
- break;
- if (audio->stopped) {
- rc = -EBUSY;
- break;
- }
- xfer = (count > frame->size) ? frame->size : count;
- if (copy_from_user(frame->data, buf, xfer)) {
- rc = -EFAULT;
- break;
- }
-
- frame->used = xfer;
- audio->out_head ^= 1;
- count -= xfer;
- buf += xfer;
-
- audamrnb_send_data(audio, 0);
-
- }
- mutex_unlock(&audio->write_lock);
- if (buf > start)
- return buf - start;
- return rc;
-}
-
-static int audamrnb_release(struct inode *inode, struct file *file)
-{
- struct audio *audio = file->private_data;
-
- dprintk("audamrnb_release()\n");
-
- mutex_lock(&audio->lock);
- audamrnb_disable(audio);
- audamrnb_flush(audio);
- audamrnb_flush_pcm_buf(audio);
- msm_adsp_put(audio->audplay);
- audio->audplay = NULL;
- audio->opened = 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_amrnb_audio;
-
-static int audamrnb_open(struct inode *inode, struct file *file)
-{
- struct audio *audio = &the_amrnb_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_amrnb, audio);
- if (rc) {
- pr_err("audio: failed to get audplay0 dsp module\n");
- audmgr_disable(&audio->audmgr);
- dma_free_coherent(NULL, DMASZ, audio->data, audio->phys);
- audio->data = NULL;
- goto done;
- }
-
- 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 */
-
- audamrnb_flush(audio);
-
- file->private_data = audio;
- audio->opened = 1;
- rc = 0;
-done:
- mutex_unlock(&audio->lock);
- return rc;
-}
-
-static struct file_operations audio_amrnb_fops = {
- .owner = THIS_MODULE,
- .open = audamrnb_open,
- .release = audamrnb_release,
- .read = audamrnb_read,
- .write = audamrnb_write,
- .unlocked_ioctl = audamrnb_ioctl,
-};
-
-struct miscdevice audio_amrnb_misc = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = "msm_amrnb",
- .fops = &audio_amrnb_fops,
-};
-
-static int __init audamrnb_init(void)
-{
- mutex_init(&the_amrnb_audio.lock);
- mutex_init(&the_amrnb_audio.write_lock);
- mutex_init(&the_amrnb_audio.read_lock);
- spin_lock_init(&the_amrnb_audio.dsp_lock);
- init_waitqueue_head(&the_amrnb_audio.write_wait);
- init_waitqueue_head(&the_amrnb_audio.read_wait);
- the_amrnb_audio.read_data = NULL;
- return misc_register(&audio_amrnb_misc);
-}
-
-static void __exit audamrnb_exit(void)
-{
- misc_deregister(&audio_amrnb_misc);
-}
-
-module_init(audamrnb_init);
-module_exit(audamrnb_exit);
-
-MODULE_DESCRIPTION("MSM AMR-NB driver");
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("QUALCOMM Inc");
projects / mv-sheeva.git / blobdiff