274 lines
7.4 KiB
C
274 lines
7.4 KiB
C
/* wmapro audio output device
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*
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* Copyright (C) 2008 Google, Inc.
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* Copyright (C) 2008 HTC Corporation
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* Copyright (c) 2009-2013, The Linux Foundation. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/types.h>
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#include <linux/msm_audio_wmapro.h>
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#include "audio_utils_aio.h"
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#ifdef CONFIG_DEBUG_FS
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static const struct file_operations audio_wmapro_debug_fops = {
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.read = audio_aio_debug_read,
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.open = audio_aio_debug_open,
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};
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#endif
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static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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struct q6audio_aio *audio = file->private_data;
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int rc = 0;
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switch (cmd) {
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case AUDIO_START: {
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struct asm_wmapro_cfg wmapro_cfg;
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struct msm_audio_wmapro_config *wmapro_config;
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pr_debug("%s: AUDIO_START session_id[%d]\n", __func__,
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audio->ac->session);
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if (audio->feedback == NON_TUNNEL_MODE) {
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/* Configure PCM output block */
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rc = q6asm_enc_cfg_blk_pcm(audio->ac,
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audio->pcm_cfg.sample_rate,
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audio->pcm_cfg.channel_count);
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if (rc < 0) {
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pr_err("pcm output block config failed\n");
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break;
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}
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}
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wmapro_config = (struct msm_audio_wmapro_config *)
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audio->codec_cfg;
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if ((wmapro_config->formattag == 0x162) ||
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(wmapro_config->formattag == 0x163) ||
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(wmapro_config->formattag == 0x166) ||
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(wmapro_config->formattag == 0x167)) {
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wmapro_cfg.format_tag = wmapro_config->formattag;
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} else {
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pr_err("%s:AUDIO_START failed: formattag = %d\n",
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__func__, wmapro_config->formattag);
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rc = -EINVAL;
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break;
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}
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if ((wmapro_config->numchannels == 1) ||
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(wmapro_config->numchannels == 2)) {
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wmapro_cfg.ch_cfg = wmapro_config->numchannels;
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} else {
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pr_err("%s:AUDIO_START failed: channels = %d\n",
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__func__, wmapro_config->numchannels);
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rc = -EINVAL;
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break;
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}
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if ((wmapro_config->samplingrate <= 48000) ||
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(wmapro_config->samplingrate > 0)) {
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wmapro_cfg.sample_rate =
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wmapro_config->samplingrate;
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} else {
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pr_err("%s:AUDIO_START failed: sample_rate = %d\n",
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__func__, wmapro_config->samplingrate);
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rc = -EINVAL;
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break;
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}
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wmapro_cfg.avg_bytes_per_sec =
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wmapro_config->avgbytespersecond;
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if ((wmapro_config->asfpacketlength <= 13376) ||
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(wmapro_config->asfpacketlength > 0)) {
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wmapro_cfg.block_align =
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wmapro_config->asfpacketlength;
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} else {
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pr_err("%s:AUDIO_START failed: block_align = %d\n",
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__func__, wmapro_config->asfpacketlength);
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rc = -EINVAL;
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break;
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}
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if ((wmapro_config->validbitspersample == 16) ||
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(wmapro_config->validbitspersample == 24)) {
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wmapro_cfg.valid_bits_per_sample =
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wmapro_config->validbitspersample;
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} else {
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pr_err("%s:AUDIO_START failed: bitspersample = %d\n",
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__func__,
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wmapro_config->validbitspersample);
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rc = -EINVAL;
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break;
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}
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if ((wmapro_config->channelmask == 4) ||
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(wmapro_config->channelmask == 3)) {
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wmapro_cfg.ch_mask = wmapro_config->channelmask;
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} else {
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pr_err("%s:AUDIO_START failed: channel_mask = %d\n",
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__func__, wmapro_config->channelmask);
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rc = -EINVAL;
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break;
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}
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wmapro_cfg.encode_opt = wmapro_config->encodeopt;
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wmapro_cfg.adv_encode_opt =
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wmapro_config->advancedencodeopt;
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wmapro_cfg.adv_encode_opt2 =
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wmapro_config->advancedencodeopt2;
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/* Configure Media format block */
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rc = q6asm_media_format_block_wmapro(audio->ac, &wmapro_cfg);
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if (rc < 0) {
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pr_err("cmd media format block failed\n");
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break;
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}
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rc = audio_aio_enable(audio);
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audio->eos_rsp = 0;
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audio->eos_flag = 0;
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if (!rc) {
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audio->enabled = 1;
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} else {
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audio->enabled = 0;
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pr_err("Audio Start procedure failed rc=%d\n", rc);
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break;
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}
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pr_debug("AUDIO_START success enable[%d]\n", audio->enabled);
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if (audio->stopped == 1)
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audio->stopped = 0;
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break;
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}
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case AUDIO_GET_WMAPRO_CONFIG: {
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if (copy_to_user((void *)arg, audio->codec_cfg,
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sizeof(struct msm_audio_wmapro_config))) {
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rc = -EFAULT;
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}
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break;
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}
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case AUDIO_SET_WMAPRO_CONFIG: {
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if (copy_from_user(audio->codec_cfg, (void *)arg,
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sizeof(struct msm_audio_wmapro_config))) {
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rc = -EFAULT;
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break;
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}
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break;
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}
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default:
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pr_debug("%s[%p]: Calling utils ioctl\n", __func__, audio);
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rc = audio->codec_ioctl(file, cmd, arg);
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if (rc)
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pr_err("Failed in utils_ioctl: %d\n", rc);
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}
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return rc;
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}
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static int audio_open(struct inode *inode, struct file *file)
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{
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struct q6audio_aio *audio = NULL;
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int rc = 0;
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#ifdef CONFIG_DEBUG_FS
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/* 4 bytes represents decoder number, 1 byte for terminate string */
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char name[sizeof "msm_wmapro_" + 5];
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#endif
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audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);
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if (audio == NULL) {
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pr_err("Could not allocate memory for wma decode driver\n");
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return -ENOMEM;
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}
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audio->codec_cfg = kzalloc(sizeof(struct msm_audio_wmapro_config),
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GFP_KERNEL);
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if (audio->codec_cfg == NULL) {
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pr_err("%s: Could not allocate memory for wmapro"
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"config\n", __func__);
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kfree(audio);
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return -ENOMEM;
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}
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audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN;
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audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_cb,
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(void *)audio);
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if (!audio->ac) {
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pr_err("Could not allocate memory for audio client\n");
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kfree(audio->codec_cfg);
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kfree(audio);
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return -ENOMEM;
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}
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/* open in T/NT mode */
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if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) {
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rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM,
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FORMAT_WMA_V10PRO);
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if (rc < 0) {
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pr_err("NT mode Open failed rc=%d\n", rc);
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rc = -ENODEV;
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goto fail;
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}
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audio->feedback = NON_TUNNEL_MODE;
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/* open WMA decoder, expected frames is always 1*/
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audio->buf_cfg.frames_per_buf = 0x01;
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audio->buf_cfg.meta_info_enable = 0x01;
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} else if ((file->f_mode & FMODE_WRITE) &&
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!(file->f_mode & FMODE_READ)) {
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rc = q6asm_open_write(audio->ac, FORMAT_WMA_V10PRO);
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if (rc < 0) {
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pr_err("T mode Open failed rc=%d\n", rc);
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rc = -ENODEV;
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goto fail;
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}
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audio->feedback = TUNNEL_MODE;
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audio->buf_cfg.meta_info_enable = 0x00;
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} else {
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pr_err("Not supported mode\n");
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rc = -EACCES;
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goto fail;
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}
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rc = audio_aio_open(audio, file);
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if (rc < 0) {
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pr_err("audio_aio_open rc=%d\n", rc);
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goto fail;
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}
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#ifdef CONFIG_DEBUG_FS
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snprintf(name, sizeof name, "msm_wmapro_%04x", audio->ac->session);
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audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
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NULL, (void *)audio,
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&audio_wmapro_debug_fops);
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if (IS_ERR(audio->dentry))
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pr_debug("debugfs_create_file failed\n");
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#endif
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pr_info("%s:wmapro decoder open success, session_id = %d\n", __func__,
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audio->ac->session);
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return rc;
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fail:
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q6asm_audio_client_free(audio->ac);
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kfree(audio->codec_cfg);
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kfree(audio);
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return rc;
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}
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static const struct file_operations audio_wmapro_fops = {
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.owner = THIS_MODULE,
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.open = audio_open,
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.release = audio_aio_release,
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.unlocked_ioctl = audio_ioctl,
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.fsync = audio_aio_fsync,
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};
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struct miscdevice audio_wmapro_misc = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = "msm_wmapro",
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.fops = &audio_wmapro_fops,
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};
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static int __init audio_wmapro_init(void)
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{
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return misc_register(&audio_wmapro_misc);
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}
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device_initcall(audio_wmapro_init);
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