437 lines
12 KiB
C
437 lines
12 KiB
C
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/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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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_alac.h>
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#include <linux/compat.h>
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#include "audio_utils_aio.h"
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static struct miscdevice audio_alac_misc;
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static struct ws_mgr audio_alac_ws_mgr;
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static const struct file_operations audio_alac_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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static struct dentry *config_debugfs_create_file(const char *name, void *data)
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{
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return debugfs_create_file(name, S_IFREG | S_IRUGO,
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NULL, (void *)data, &audio_alac_debug_fops);
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}
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static int alac_channel_map(u8 *channel_mapping, uint32_t channels);
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static long audio_ioctl_shared(struct file *file, unsigned int cmd,
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void *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_alac_cfg alac_cfg;
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struct msm_audio_alac_config *alac_config;
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u8 channel_mapping[PCM_FORMAT_MAX_NUM_CHANNEL];
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memset(channel_mapping, 0, PCM_FORMAT_MAX_NUM_CHANNEL);
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if (alac_channel_map(channel_mapping,
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audio->pcm_cfg.channel_count)) {
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pr_err("%s: setting channel map failed %d\n",
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__func__, audio->pcm_cfg.channel_count);
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}
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pr_debug("%s[%p]: AUDIO_START session_id[%d]\n", __func__,
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audio, 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_v2(audio->ac,
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audio->pcm_cfg.sample_rate,
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audio->pcm_cfg.channel_count,
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16, /*bits per sample*/
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false, false, channel_mapping);
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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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alac_config = (struct msm_audio_alac_config *)audio->codec_cfg;
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alac_cfg.frame_length = alac_config->frameLength;
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alac_cfg.compatible_version = alac_config->compatVersion;
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alac_cfg.bit_depth = alac_config->bitDepth;
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alac_cfg.pb = alac_config->pb;
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alac_cfg.mb = alac_config->mb;
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alac_cfg.kb = alac_config->kb;
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alac_cfg.num_channels = alac_config->channelCount;
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alac_cfg.max_run = alac_config->maxRun;
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alac_cfg.max_frame_bytes = alac_config->maxSize;
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alac_cfg.avg_bit_rate = alac_config->averageBitRate;
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alac_cfg.sample_rate = alac_config->sampleRate;
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alac_cfg.channel_layout_tag = alac_config->channelLayout;
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pr_debug("%s: frame_length %d compatible_version %d bit_depth %d pb %d mb %d kb %d num_channels %d max_run %d max_frame_bytes %d avg_bit_rate %d sample_rate %d channel_layout_tag %d\n",
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__func__, alac_config->frameLength,
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alac_config->compatVersion,
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alac_config->bitDepth, alac_config->pb,
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alac_config->mb, alac_config->kb,
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alac_config->channelCount, alac_config->maxRun,
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alac_config->maxSize,
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alac_config->averageBitRate,
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alac_config->sampleRate,
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alac_config->channelLayout);
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/* Configure Media format block */
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rc = q6asm_media_format_block_alac(audio->ac, &alac_cfg,
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audio->ac->stream_id);
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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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default:
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pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
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break;
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}
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return rc;
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}
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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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rc = audio_ioctl_shared(file, cmd, (void *)arg);
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break;
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}
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case AUDIO_GET_ALAC_CONFIG: {
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if (copy_to_user((void *)arg, audio->codec_cfg,
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sizeof(struct msm_audio_alac_config))) {
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pr_err("%s:copy_to_user for AUDIO_GET_ALAC_CONFIG failed\n",
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__func__);
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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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case AUDIO_SET_ALAC_CONFIG: {
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if (copy_from_user(audio->codec_cfg, (void *)arg,
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sizeof(struct msm_audio_alac_config))) {
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pr_err("%s:copy_from_user for AUDIO_SET_ALAC_CONFIG failed\n",
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__func__);
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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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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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break;
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}
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}
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return rc;
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}
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#ifdef CONFIG_COMPAT
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struct msm_audio_alac_config_32 {
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u32 frameLength;
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u8 compatVersion;
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u8 bitDepth;
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u8 pb;
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u8 mb;
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u8 kb;
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u8 channelCount;
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u16 maxRun;
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u32 maxSize;
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u32 averageBitRate;
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u32 sampleRate;
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u32 channelLayout;
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};
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enum {
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AUDIO_GET_ALAC_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC,
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(AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_alac_config_32),
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AUDIO_SET_ALAC_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC,
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(AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_alac_config_32)
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};
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static long audio_compat_ioctl(struct file *file, unsigned int cmd,
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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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rc = audio_ioctl_shared(file, cmd, (void *)arg);
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break;
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}
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case AUDIO_GET_ALAC_CONFIG_32: {
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struct msm_audio_alac_config *alac_config;
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struct msm_audio_alac_config_32 alac_config_32;
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alac_config = (struct msm_audio_alac_config *)audio->codec_cfg;
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alac_config_32.frameLength = alac_config->frameLength;
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alac_config_32.compatVersion =
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alac_config->compatVersion;
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alac_config_32.bitDepth = alac_config->bitDepth;
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alac_config_32.pb = alac_config->pb;
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alac_config_32.mb = alac_config->mb;
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alac_config_32.kb = alac_config->kb;
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alac_config_32.channelCount = alac_config->channelCount;
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alac_config_32.maxRun = alac_config->maxRun;
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alac_config_32.maxSize = alac_config->maxSize;
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alac_config_32.averageBitRate = alac_config->averageBitRate;
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alac_config_32.sampleRate = alac_config->sampleRate;
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alac_config_32.channelLayout = alac_config->channelLayout;
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if (copy_to_user((void *)arg, &alac_config_32,
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sizeof(alac_config_32))) {
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pr_err("%s: copy_to_user for GET_ALAC_CONFIG_32 failed\n",
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__func__);
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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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case AUDIO_SET_ALAC_CONFIG_32: {
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struct msm_audio_alac_config *alac_config;
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struct msm_audio_alac_config_32 alac_config_32;
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if (copy_from_user(&alac_config_32, (void *)arg,
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sizeof(alac_config_32))) {
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pr_err("%s: copy_from_user for SET_ALAC_CONFIG_32 failed\n"
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, __func__);
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rc = -EFAULT;
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break;
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}
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alac_config = (struct msm_audio_alac_config *)audio->codec_cfg;
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alac_config->frameLength = alac_config_32.frameLength;
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alac_config->compatVersion =
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alac_config_32.compatVersion;
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alac_config->bitDepth = alac_config_32.bitDepth;
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alac_config->pb = alac_config_32.pb;
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alac_config->mb = alac_config_32.mb;
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alac_config->kb = alac_config_32.kb;
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alac_config->channelCount = alac_config_32.channelCount;
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alac_config->maxRun = alac_config_32.maxRun;
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alac_config->maxSize = alac_config_32.maxSize;
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alac_config->averageBitRate = alac_config_32.averageBitRate;
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alac_config->sampleRate = alac_config_32.sampleRate;
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alac_config->channelLayout = alac_config_32.channelLayout;
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break;
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}
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default: {
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rc = audio->codec_compat_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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break;
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}
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}
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return rc;
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}
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#else
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#define audio_compat_ioctl NULL
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#endif
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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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/* 4 bytes represents decoder number, 1 byte for terminate string */
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char name[sizeof "msm_alac_" + 5];
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audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);
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if (!audio) {
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pr_err("Could not allocate memory for alac 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_alac_config),
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GFP_KERNEL);
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if (!audio->codec_cfg) {
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pr_err("%s:Could not allocate memory for alac config\n",
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__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->miscdevice = &audio_alac_misc;
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audio->wakelock_voted = false;
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audio->audio_ws_mgr = &audio_alac_ws_mgr;
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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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rc = audio_aio_open(audio, file);
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if (rc < 0) {
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pr_err("%s: audio_aio_open rc=%d\n",
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__func__, rc);
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goto fail;
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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_ALAC);
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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 ALAC 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_ALAC);
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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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snprintf(name, sizeof(name), "msm_alac_%04x", audio->ac->session);
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audio->dentry = config_debugfs_create_file(name, (void *)audio);
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if (IS_ERR_OR_NULL(audio->dentry))
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pr_debug("debugfs_create_file failed\n");
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pr_debug("%s:alacdec success mode[%d]session[%d]\n", __func__,
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audio->feedback,
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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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}
|
||
|
|
|
||
|
|
static int alac_channel_map(u8 *channel_mapping, uint32_t channels)
|
||
|
|
{
|
||
|
|
u8 *lchannel_mapping;
|
||
|
|
|
||
|
|
lchannel_mapping = channel_mapping;
|
||
|
|
pr_debug("%s: channels passed: %d\n", __func__, channels);
|
||
|
|
if (channels == 1) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FC;
|
||
|
|
} else if (channels == 2) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FL;
|
||
|
|
lchannel_mapping[1] = PCM_CHANNEL_FR;
|
||
|
|
} else if (channels == 3) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FC;
|
||
|
|
lchannel_mapping[1] = PCM_CHANNEL_FL;
|
||
|
|
lchannel_mapping[2] = PCM_CHANNEL_FR;
|
||
|
|
} else if (channels == 4) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FC;
|
||
|
|
lchannel_mapping[1] = PCM_CHANNEL_FL;
|
||
|
|
lchannel_mapping[2] = PCM_CHANNEL_FR;
|
||
|
|
lchannel_mapping[3] = PCM_CHANNEL_CS;
|
||
|
|
} else if (channels == 5) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FC;
|
||
|
|
lchannel_mapping[1] = PCM_CHANNEL_FL;
|
||
|
|
lchannel_mapping[2] = PCM_CHANNEL_FR;
|
||
|
|
lchannel_mapping[3] = PCM_CHANNEL_LS;
|
||
|
|
lchannel_mapping[4] = PCM_CHANNEL_RS;
|
||
|
|
} else if (channels == 6) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FC;
|
||
|
|
lchannel_mapping[1] = PCM_CHANNEL_FL;
|
||
|
|
lchannel_mapping[2] = PCM_CHANNEL_FR;
|
||
|
|
lchannel_mapping[3] = PCM_CHANNEL_LS;
|
||
|
|
lchannel_mapping[4] = PCM_CHANNEL_RS;
|
||
|
|
lchannel_mapping[5] = PCM_CHANNEL_LFE;
|
||
|
|
} else if (channels == 7) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FC;
|
||
|
|
lchannel_mapping[1] = PCM_CHANNEL_FL;
|
||
|
|
lchannel_mapping[2] = PCM_CHANNEL_FR;
|
||
|
|
lchannel_mapping[3] = PCM_CHANNEL_LS;
|
||
|
|
lchannel_mapping[4] = PCM_CHANNEL_RS;
|
||
|
|
lchannel_mapping[5] = PCM_CHANNEL_CS;
|
||
|
|
lchannel_mapping[6] = PCM_CHANNEL_LFE;
|
||
|
|
} else if (channels == 8) {
|
||
|
|
lchannel_mapping[0] = PCM_CHANNEL_FC;
|
||
|
|
lchannel_mapping[1] = PCM_CHANNEL_FLC;
|
||
|
|
lchannel_mapping[2] = PCM_CHANNEL_FRC;
|
||
|
|
lchannel_mapping[3] = PCM_CHANNEL_FL;
|
||
|
|
lchannel_mapping[4] = PCM_CHANNEL_FR;
|
||
|
|
lchannel_mapping[5] = PCM_CHANNEL_LS;
|
||
|
|
lchannel_mapping[6] = PCM_CHANNEL_RS;
|
||
|
|
lchannel_mapping[7] = PCM_CHANNEL_LFE;
|
||
|
|
} else {
|
||
|
|
pr_err("%s: ERROR.unsupported num_ch = %u\n",
|
||
|
|
__func__, channels);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct file_operations audio_alac_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = audio_open,
|
||
|
|
.release = audio_aio_release,
|
||
|
|
.unlocked_ioctl = audio_ioctl,
|
||
|
|
.fsync = audio_aio_fsync,
|
||
|
|
.compat_ioctl = audio_compat_ioctl
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct miscdevice audio_alac_misc = {
|
||
|
|
.minor = MISC_DYNAMIC_MINOR,
|
||
|
|
.name = "msm_alac",
|
||
|
|
.fops = &audio_alac_fops,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init audio_alac_init(void)
|
||
|
|
{
|
||
|
|
int ret = misc_register(&audio_alac_misc);
|
||
|
|
|
||
|
|
if (ret == 0)
|
||
|
|
device_init_wakeup(audio_alac_misc.this_device, true);
|
||
|
|
audio_alac_ws_mgr.ref_cnt = 0;
|
||
|
|
mutex_init(&audio_alac_ws_mgr.ws_lock);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
device_initcall(audio_alac_init);
|