Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/arch/arm/mach-msm/qdsp6v2/audio_utils.c b/arch/arm/mach-msm/qdsp6v2/audio_utils.c
new file mode 100644
index 0000000..2e31ba0
--- /dev/null
+++ b/arch/arm/mach-msm/qdsp6v2/audio_utils.c
@@ -0,0 +1,639 @@
+/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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.
+ *
+*/
+
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <asm/atomic.h>
+#include <asm/ioctls.h>
+#include <sound/q6asm.h>
+#include <sound/apr_audio.h>
+#include "audio_utils.h"
+
+static int audio_in_pause(struct q6audio_in *audio)
+{
+ int rc;
+
+ rc = q6asm_cmd(audio->ac, CMD_PAUSE);
+ if (rc < 0)
+ pr_err("%s:session id %d: pause cmd failed rc=%d\n", __func__,
+ audio->ac->session, rc);
+
+ return rc;
+}
+
+static int audio_in_flush(struct q6audio_in *audio)
+{
+ int rc;
+
+ pr_debug("%s:session id %d: flush\n", __func__, audio->ac->session);
+ /* Implicitly issue a pause to the decoder before flushing */
+ rc = audio_in_pause(audio);
+ if (rc < 0) {
+ pr_err("%s:session id %d: pause cmd failed rc=%d\n", __func__,
+ audio->ac->session, rc);
+ return rc;
+ }
+
+ rc = q6asm_cmd(audio->ac, CMD_FLUSH);
+ if (rc < 0) {
+ pr_err("%s:session id %d: flush cmd failed rc=%d\n", __func__,
+ audio->ac->session, rc);
+ return rc;
+ }
+ audio->rflush = 1;
+ audio->wflush = 1;
+ memset(audio->out_frame_info, 0, sizeof(audio->out_frame_info));
+ wake_up(&audio->read_wait);
+ /* get read_lock to ensure no more waiting read thread */
+ mutex_lock(&audio->read_lock);
+ audio->rflush = 0;
+ mutex_unlock(&audio->read_lock);
+ wake_up(&audio->write_wait);
+ /* get write_lock to ensure no more waiting write thread */
+ mutex_lock(&audio->write_lock);
+ audio->wflush = 0;
+ mutex_unlock(&audio->write_lock);
+ pr_debug("%s:session id %d: in_bytes %d\n", __func__,
+ audio->ac->session, atomic_read(&audio->in_bytes));
+ pr_debug("%s:session id %d: in_samples %d\n", __func__,
+ audio->ac->session, atomic_read(&audio->in_samples));
+ atomic_set(&audio->in_bytes, 0);
+ atomic_set(&audio->in_samples, 0);
+ return 0;
+}
+
+void audio_in_get_dsp_frames(struct q6audio_in *audio,
+ uint32_t token, uint32_t *payload)
+{
+ uint32_t index;
+
+ index = token;
+ pr_debug("%s:session id %d: index=%d nr frames=%d offset[%d]\n",
+ __func__, audio->ac->session, token, payload[7],
+ payload[3]);
+ pr_debug("%s:session id %d: timemsw=%d lsw=%d\n", __func__,
+ audio->ac->session, payload[4], payload[5]);
+ pr_debug("%s:session id %d: uflags=0x%8x uid=0x%8x\n", __func__,
+ audio->ac->session, payload[6], payload[8]);
+ pr_debug("%s:session id %d: enc frame size=0x%8x\n", __func__,
+ audio->ac->session, payload[2]);
+
+ audio->out_frame_info[index][0] = payload[7];
+ audio->out_frame_info[index][1] = payload[3];
+
+ /* statistics of read */
+ atomic_add(payload[2], &audio->in_bytes);
+ atomic_add(payload[7], &audio->in_samples);
+
+ if (atomic_read(&audio->out_count) <= audio->str_cfg.buffer_count) {
+ atomic_inc(&audio->out_count);
+ wake_up(&audio->read_wait);
+ }
+}
+
+/* must be called with audio->lock held */
+int audio_in_enable(struct q6audio_in *audio)
+{
+ if (audio->enabled)
+ return 0;
+
+ /* 2nd arg: 0 -> run immediately
+ 3rd arg: 0 -> msw_ts, 4th arg: 0 ->lsw_ts */
+ return q6asm_run(audio->ac, 0x00, 0x00, 0x00);
+}
+
+/* must be called with audio->lock held */
+int audio_in_disable(struct q6audio_in *audio)
+{
+ int rc = 0;
+ if (audio->opened) {
+ audio->enabled = 0;
+ audio->opened = 0;
+ pr_debug("%s:session id %d: inbytes[%d] insamples[%d]\n",
+ __func__, audio->ac->session,
+ atomic_read(&audio->in_bytes),
+ atomic_read(&audio->in_samples));
+
+ rc = q6asm_cmd(audio->ac, CMD_CLOSE);
+ if (rc < 0)
+ pr_err("%s:session id %d: Failed to close the\
+ session rc=%d\n", __func__, audio->ac->session,
+ rc);
+ audio->stopped = 1;
+ memset(audio->out_frame_info, 0,
+ sizeof(audio->out_frame_info));
+ wake_up(&audio->read_wait);
+ wake_up(&audio->write_wait);
+ }
+ pr_debug("%s:session id %d: enabled[%d]\n", __func__,
+ audio->ac->session, audio->enabled);
+ return rc;
+}
+
+int audio_in_buf_alloc(struct q6audio_in *audio)
+{
+ int rc = 0;
+
+ switch (audio->buf_alloc) {
+ case NO_BUF_ALLOC:
+ if (audio->feedback == NON_TUNNEL_MODE) {
+ rc = q6asm_audio_client_buf_alloc(IN,
+ audio->ac,
+ ALIGN_BUF_SIZE(audio->pcm_cfg.buffer_size),
+ audio->pcm_cfg.buffer_count);
+ if (rc < 0) {
+ pr_err("%s:session id %d: Buffer Alloc\
+ failed\n", __func__,
+ audio->ac->session);
+ rc = -ENOMEM;
+ break;
+ }
+ audio->buf_alloc |= BUF_ALLOC_IN;
+ }
+ rc = q6asm_audio_client_buf_alloc(OUT, audio->ac,
+ ALIGN_BUF_SIZE(audio->str_cfg.buffer_size),
+ audio->str_cfg.buffer_count);
+ if (rc < 0) {
+ pr_err("%s:session id %d: Buffer Alloc failed rc=%d\n",
+ __func__, audio->ac->session, rc);
+ rc = -ENOMEM;
+ break;
+ }
+ audio->buf_alloc |= BUF_ALLOC_OUT;
+ break;
+ case BUF_ALLOC_IN:
+ rc = q6asm_audio_client_buf_alloc(OUT, audio->ac,
+ ALIGN_BUF_SIZE(audio->str_cfg.buffer_size),
+ audio->str_cfg.buffer_count);
+ if (rc < 0) {
+ pr_err("%s:session id %d: Buffer Alloc failed rc=%d\n",
+ __func__, audio->ac->session, rc);
+ rc = -ENOMEM;
+ break;
+ }
+ audio->buf_alloc |= BUF_ALLOC_OUT;
+ break;
+ case BUF_ALLOC_OUT:
+ if (audio->feedback == NON_TUNNEL_MODE) {
+ rc = q6asm_audio_client_buf_alloc(IN, audio->ac,
+ ALIGN_BUF_SIZE(audio->pcm_cfg.buffer_size),
+ audio->pcm_cfg.buffer_count);
+ if (rc < 0) {
+ pr_err("%s:session id %d: Buffer Alloc\
+ failed\n", __func__,
+ audio->ac->session);
+ rc = -ENOMEM;
+ break;
+ }
+ audio->buf_alloc |= BUF_ALLOC_IN;
+ }
+ break;
+ default:
+ pr_debug("%s:session id %d: buf[%d]\n", __func__,
+ audio->ac->session, audio->buf_alloc);
+ }
+
+ return rc;
+}
+/* ------------------- device --------------------- */
+long audio_in_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct q6audio_in *audio = file->private_data;
+ int rc = 0;
+
+ if (cmd == AUDIO_GET_STATS) {
+ struct msm_audio_stats stats;
+ stats.byte_count = atomic_read(&audio->in_bytes);
+ stats.sample_count = atomic_read(&audio->in_samples);
+ if (copy_to_user((void *) arg, &stats, sizeof(stats)))
+ return -EFAULT;
+ return rc;
+ }
+
+ mutex_lock(&audio->lock);
+ switch (cmd) {
+ case AUDIO_FLUSH: {
+ /* Make sure we're stopped and we wake any threads
+ * that might be blocked holding the read_lock.
+ * While audio->stopped read threads will always
+ * exit immediately.
+ */
+ rc = audio_in_flush(audio);
+ if (rc < 0)
+ pr_err("%s:session id %d: Flush Fail rc=%d\n",
+ __func__, audio->ac->session, rc);
+ break;
+ }
+ case AUDIO_PAUSE: {
+ pr_debug("%s:session id %d: AUDIO_PAUSE\n", __func__,
+ audio->ac->session);
+ if (audio->enabled)
+ audio_in_pause(audio);
+ break;
+ }
+ case AUDIO_GET_STREAM_CONFIG: {
+ struct msm_audio_stream_config cfg;
+ memset(&cfg, 0, sizeof(cfg));
+ cfg.buffer_size = audio->str_cfg.buffer_size;
+ cfg.buffer_count = audio->str_cfg.buffer_count;
+ if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
+ rc = -EFAULT;
+ pr_debug("%s:session id %d: AUDIO_GET_STREAM_CONFIG %d %d\n",
+ __func__, audio->ac->session, cfg.buffer_size,
+ cfg.buffer_count);
+ break;
+ }
+ case AUDIO_SET_STREAM_CONFIG: {
+ struct msm_audio_stream_config cfg;
+ if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
+ rc = -EFAULT;
+ break;
+ }
+ /* Minimum single frame size,
+ but with in maximum frames number */
+ if ((cfg.buffer_size < (audio->min_frame_size+ \
+ sizeof(struct meta_out_dsp))) ||
+ (cfg.buffer_count < FRAME_NUM)) {
+ rc = -EINVAL;
+ break;
+ }
+ audio->str_cfg.buffer_size = cfg.buffer_size;
+ audio->str_cfg.buffer_count = cfg.buffer_count;
+ rc = q6asm_audio_client_buf_alloc(OUT, audio->ac,
+ ALIGN_BUF_SIZE(audio->str_cfg.buffer_size),
+ audio->str_cfg.buffer_count);
+ if (rc < 0) {
+ pr_err("%s: session id %d: Buffer Alloc failed rc=%d\n",
+ __func__, audio->ac->session, rc);
+ rc = -ENOMEM;
+ break;
+ }
+ audio->buf_alloc |= BUF_ALLOC_OUT;
+ rc = 0;
+ pr_debug("%s:session id %d: AUDIO_SET_STREAM_CONFIG %d %d\n",
+ __func__, audio->ac->session,
+ audio->str_cfg.buffer_size,
+ audio->str_cfg.buffer_count);
+ break;
+ }
+ case AUDIO_GET_SESSION_ID: {
+ if (copy_to_user((void *) arg, &audio->ac->session,
+ sizeof(unsigned short))) {
+ rc = -EFAULT;
+ }
+ break;
+ }
+ case AUDIO_SET_BUF_CFG: {
+ struct msm_audio_buf_cfg cfg;
+ if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
+ rc = -EFAULT;
+ break;
+ }
+ if ((audio->feedback == NON_TUNNEL_MODE) &&
+ !cfg.meta_info_enable) {
+ rc = -EFAULT;
+ break;
+ }
+
+ /* Restrict the num of frames per buf to coincide with
+ * default buf size */
+ if (cfg.frames_per_buf > audio->max_frames_per_buf) {
+ rc = -EFAULT;
+ break;
+ }
+ audio->buf_cfg.meta_info_enable = cfg.meta_info_enable;
+ audio->buf_cfg.frames_per_buf = cfg.frames_per_buf;
+ pr_debug("%s:session id %d: Set-buf-cfg: meta[%d]\
+ framesperbuf[%d]\n", __func__,
+ audio->ac->session, cfg.meta_info_enable,
+ cfg.frames_per_buf);
+ break;
+ }
+ case AUDIO_GET_BUF_CFG: {
+ pr_debug("%s:session id %d: Get-buf-cfg: meta[%d]\
+ framesperbuf[%d]\n", __func__,
+ audio->ac->session, audio->buf_cfg.meta_info_enable,
+ audio->buf_cfg.frames_per_buf);
+
+ if (copy_to_user((void *)arg, &audio->buf_cfg,
+ sizeof(struct msm_audio_buf_cfg)))
+ rc = -EFAULT;
+ break;
+ }
+ case AUDIO_GET_CONFIG: {
+ if (copy_to_user((void *)arg, &audio->pcm_cfg,
+ sizeof(struct msm_audio_config)))
+ rc = -EFAULT;
+ break;
+
+ }
+ case AUDIO_SET_CONFIG: {
+ struct msm_audio_config cfg;
+ if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
+ rc = -EFAULT;
+ break;
+ }
+ if (audio->feedback != NON_TUNNEL_MODE) {
+ pr_err("%s:session id %d: Not sufficient permission to"
+ "change the record mode\n", __func__,
+ audio->ac->session);
+ rc = -EACCES;
+ break;
+ }
+ if ((cfg.buffer_count > PCM_BUF_COUNT) ||
+ (cfg.buffer_count == 1))
+ cfg.buffer_count = PCM_BUF_COUNT;
+
+ audio->pcm_cfg.buffer_count = cfg.buffer_count;
+ audio->pcm_cfg.buffer_size = cfg.buffer_size;
+ audio->pcm_cfg.channel_count = cfg.channel_count;
+ audio->pcm_cfg.sample_rate = cfg.sample_rate;
+ rc = q6asm_audio_client_buf_alloc(IN, audio->ac,
+ ALIGN_BUF_SIZE(audio->pcm_cfg.buffer_size),
+ audio->pcm_cfg.buffer_count);
+ if (rc < 0) {
+ pr_err("%s:session id %d: Buffer Alloc failed\n",
+ __func__, audio->ac->session);
+ rc = -ENOMEM;
+ break;
+ }
+ audio->buf_alloc |= BUF_ALLOC_IN;
+ rc = 0;
+ pr_debug("%s:session id %d: AUDIO_SET_CONFIG %d %d\n", __func__,
+ audio->ac->session, audio->pcm_cfg.buffer_count,
+ audio->pcm_cfg.buffer_size);
+ break;
+ }
+ default:
+ /* call codec specific ioctl */
+ rc = audio->enc_ioctl(file, cmd, arg);
+ }
+ mutex_unlock(&audio->lock);
+ return rc;
+}
+
+ssize_t audio_in_read(struct file *file,
+ char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct q6audio_in *audio = file->private_data;
+ const char __user *start = buf;
+ unsigned char *data;
+ uint32_t offset = 0;
+ uint32_t size = 0;
+ int rc = 0;
+ uint32_t idx;
+ struct meta_out_dsp meta;
+ uint32_t bytes_to_copy = 0;
+ uint32_t mfield_size = (audio->buf_cfg.meta_info_enable == 0) ? 0 :
+ (sizeof(unsigned char) +
+ (sizeof(struct meta_out_dsp)*(audio->buf_cfg.frames_per_buf)));
+
+ pr_debug("%s:session id %d: read - %d\n", __func__, audio->ac->session,
+ count);
+ if (!audio->enabled)
+ return -EFAULT;
+ mutex_lock(&audio->read_lock);
+ while (count > 0) {
+ rc = wait_event_interruptible(
+ audio->read_wait,
+ ((atomic_read(&audio->out_count) > 0) ||
+ (audio->stopped) ||
+ audio->rflush || audio->eos_rsp));
+
+ if (rc < 0)
+ break;
+
+ if ((audio->stopped && !(atomic_read(&audio->out_count))) ||
+ audio->rflush) {
+ pr_debug("%s:session id %d: driver in stop state or\
+ flush,No more buf to read", __func__,
+ audio->ac->session);
+ rc = 0;/* End of File */
+ break;
+ }
+ if (!(atomic_read(&audio->out_count)) &&
+ (audio->eos_rsp == 1) &&
+ (count >= (sizeof(unsigned char) +
+ sizeof(struct meta_out_dsp)))) {
+ unsigned char num_of_frames;
+ pr_info("%s:session id %d: eos %d at output\n",
+ __func__, audio->ac->session, audio->eos_rsp);
+ if (buf != start)
+ break;
+ num_of_frames = 0xFF;
+ if (copy_to_user(buf, &num_of_frames,
+ sizeof(unsigned char))) {
+ rc = -EFAULT;
+ break;
+ }
+ buf += sizeof(unsigned char);
+ meta.frame_size = 0xFFFF;
+ meta.encoded_pcm_samples = 0xFFFF;
+ meta.msw_ts = 0x00;
+ meta.lsw_ts = 0x00;
+ meta.nflags = AUD_EOS_SET;
+ audio->eos_rsp = 0;
+ if (copy_to_user(buf, &meta, sizeof(meta))) {
+ rc = -EFAULT;
+ break;
+ }
+ buf += sizeof(meta);
+ break;
+ }
+ data = (unsigned char *)q6asm_is_cpu_buf_avail(OUT, audio->ac,
+ &size, &idx);
+ if ((count >= (size + mfield_size)) && data) {
+ if (audio->buf_cfg.meta_info_enable) {
+ if (copy_to_user(buf,
+ &audio->out_frame_info[idx][0],
+ sizeof(unsigned char))) {
+ rc = -EFAULT;
+ break;
+ }
+ bytes_to_copy =
+ (size + audio->out_frame_info[idx][1]);
+ /* Number of frames information copied */
+ buf += sizeof(unsigned char);
+ count -= sizeof(unsigned char);
+ } else {
+ offset = audio->out_frame_info[idx][1];
+ bytes_to_copy = size;
+ }
+
+ pr_debug("%s:session id %d: offset=%d nr of frames= %d\n",
+ __func__, audio->ac->session,
+ audio->out_frame_info[idx][1],
+ audio->out_frame_info[idx][0]);
+
+ if (copy_to_user(buf, &data[offset], bytes_to_copy)) {
+ rc = -EFAULT;
+ break;
+ }
+ count -= bytes_to_copy;
+ buf += bytes_to_copy;
+ } else {
+ pr_err("%s:session id %d: short read data[%p]\
+ bytesavail[%d]bytesrequest[%d]\n", __func__,
+ audio->ac->session,
+ data, size, count);
+ }
+ atomic_dec(&audio->out_count);
+ q6asm_read(audio->ac);
+ break;
+ }
+ mutex_unlock(&audio->read_lock);
+
+ pr_debug("%s:session id %d: read: %d bytes\n", __func__,
+ audio->ac->session, (buf-start));
+ if (buf > start)
+ return buf - start;
+ return rc;
+}
+
+static int extract_meta_info(char *buf, unsigned long *msw_ts,
+ unsigned long *lsw_ts, unsigned int *flags)
+{
+ struct meta_in *meta = (struct meta_in *)buf;
+ *msw_ts = meta->ntimestamp.highpart;
+ *lsw_ts = meta->ntimestamp.lowpart;
+ *flags = meta->nflags;
+ return 0;
+}
+
+ssize_t audio_in_write(struct file *file,
+ const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct q6audio_in *audio = file->private_data;
+ const char __user *start = buf;
+ size_t xfer = 0;
+ char *cpy_ptr;
+ int rc = 0;
+ unsigned char *data;
+ uint32_t size = 0;
+ uint32_t idx = 0;
+ uint32_t nflags = 0;
+ unsigned long msw_ts = 0;
+ unsigned long lsw_ts = 0;
+ uint32_t mfield_size = (audio->buf_cfg.meta_info_enable == 0) ? 0 :
+ sizeof(struct meta_in);
+
+ pr_debug("%s:session id %d: to write[%d]\n", __func__,
+ audio->ac->session, count);
+ if (!audio->enabled)
+ return -EFAULT;
+ mutex_lock(&audio->write_lock);
+
+ while (count > 0) {
+ rc = wait_event_interruptible(audio->write_wait,
+ ((atomic_read(&audio->in_count) > 0) ||
+ (audio->stopped) ||
+ (audio->wflush)));
+ if (rc < 0)
+ break;
+ if (audio->stopped || audio->wflush) {
+ pr_debug("%s: session id %d: stop or flush\n", __func__,
+ audio->ac->session);
+ rc = -EBUSY;
+ break;
+ }
+ data = (unsigned char *)q6asm_is_cpu_buf_avail(IN, audio->ac,
+ &size, &idx);
+ if (!data) {
+ pr_debug("%s:session id %d: No buf available\n",
+ __func__, audio->ac->session);
+ continue;
+ }
+ cpy_ptr = data;
+ if (audio->buf_cfg.meta_info_enable) {
+ if (buf == start) {
+ /* Processing beginning of user buffer */
+ 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
+ */
+ extract_meta_info(cpy_ptr, &msw_ts, &lsw_ts,
+ &nflags);
+ buf += mfield_size;
+ if (count == mfield_size) {
+ /* send the EOS and return */
+ pr_debug("%s:session id %d: send EOS\
+ 0x%8x\n", __func__,
+ audio->ac->session, nflags);
+ break;
+ }
+ count -= mfield_size;
+ } else {
+ pr_debug("%s:session id %d: continuous\
+ buffer\n", __func__, audio->ac->session);
+ }
+ }
+ xfer = (count > (audio->pcm_cfg.buffer_size)) ?
+ (audio->pcm_cfg.buffer_size) : count;
+
+ if (copy_from_user(cpy_ptr, buf, xfer)) {
+ rc = -EFAULT;
+ break;
+ }
+ rc = q6asm_write(audio->ac, xfer, msw_ts, lsw_ts, 0x00);
+ if (rc < 0) {
+ rc = -EFAULT;
+ break;
+ }
+ atomic_dec(&audio->in_count);
+ count -= xfer;
+ buf += xfer;
+ }
+ mutex_unlock(&audio->write_lock);
+ pr_debug("%s:session id %d: eos_condition 0x%8x buf[0x%x]\
+ start[0x%x]\n", __func__, audio->ac->session,
+ nflags, (int) buf, (int) start);
+ if (nflags & AUD_EOS_SET) {
+ rc = q6asm_cmd(audio->ac, CMD_EOS);
+ pr_info("%s:session id %d: eos %d at input\n", __func__,
+ audio->ac->session, audio->eos_rsp);
+ }
+ pr_debug("%s:session id %d: Written %d Avail Buf[%d]", __func__,
+ audio->ac->session, (buf - start - mfield_size),
+ atomic_read(&audio->in_count));
+ if (!rc) {
+ if (buf > start)
+ return buf - start;
+ }
+ return rc;
+}
+
+int audio_in_release(struct inode *inode, struct file *file)
+{
+ struct q6audio_in *audio = file->private_data;
+ pr_info("%s: session id %d\n", __func__, audio->ac->session);
+ mutex_lock(&audio->lock);
+ audio_in_disable(audio);
+ q6asm_audio_client_free(audio->ac);
+ mutex_unlock(&audio->lock);
+ kfree(audio->enc_cfg);
+ kfree(audio);
+ return 0;
+}
+