diff options
Diffstat (limited to 'drivers/misc/qcom/qdsp6v2/audio_alac.c')
| -rw-r--r-- | drivers/misc/qcom/qdsp6v2/audio_alac.c | 436 |
1 files changed, 436 insertions, 0 deletions
diff --git a/drivers/misc/qcom/qdsp6v2/audio_alac.c b/drivers/misc/qcom/qdsp6v2/audio_alac.c new file mode 100644 index 000000000000..9748db30fac3 --- /dev/null +++ b/drivers/misc/qcom/qdsp6v2/audio_alac.c @@ -0,0 +1,436 @@ +/* Copyright (c) 2015, The Linux Foundation. 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/types.h> +#include <linux/msm_audio_alac.h> +#include <linux/compat.h> +#include "audio_utils_aio.h" + +static struct miscdevice audio_alac_misc; +static struct ws_mgr audio_alac_ws_mgr; + +static const struct file_operations audio_alac_debug_fops = { + .read = audio_aio_debug_read, + .open = audio_aio_debug_open, +}; + +static struct dentry *config_debugfs_create_file(const char *name, void *data) +{ + return debugfs_create_file(name, S_IFREG | S_IRUGO, + NULL, (void *)data, &audio_alac_debug_fops); +} + +static int alac_channel_map(u8 *channel_mapping, uint32_t channels); + +static long audio_ioctl_shared(struct file *file, unsigned int cmd, + void *arg) +{ + struct q6audio_aio *audio = file->private_data; + int rc = 0; + + switch (cmd) { + case AUDIO_START: { + struct asm_alac_cfg alac_cfg; + struct msm_audio_alac_config *alac_config; + u8 channel_mapping[PCM_FORMAT_MAX_NUM_CHANNEL]; + + memset(channel_mapping, 0, PCM_FORMAT_MAX_NUM_CHANNEL); + + if (alac_channel_map(channel_mapping, + audio->pcm_cfg.channel_count)) { + pr_err("%s: setting channel map failed %d\n", + __func__, audio->pcm_cfg.channel_count); + } + + pr_debug("%s[%p]: AUDIO_START session_id[%d]\n", __func__, + audio, audio->ac->session); + if (audio->feedback == NON_TUNNEL_MODE) { + /* Configure PCM output block */ + rc = q6asm_enc_cfg_blk_pcm_v2(audio->ac, + audio->pcm_cfg.sample_rate, + audio->pcm_cfg.channel_count, + 16, /*bits per sample*/ + false, false, channel_mapping); + if (rc < 0) { + pr_err("pcm output block config failed\n"); + break; + } + } + alac_config = (struct msm_audio_alac_config *)audio->codec_cfg; + alac_cfg.frame_length = alac_config->frameLength; + alac_cfg.compatible_version = alac_config->compatVersion; + alac_cfg.bit_depth = alac_config->bitDepth; + alac_cfg.pb = alac_config->pb; + alac_cfg.mb = alac_config->mb; + alac_cfg.kb = alac_config->kb; + alac_cfg.num_channels = alac_config->channelCount; + alac_cfg.max_run = alac_config->maxRun; + alac_cfg.max_frame_bytes = alac_config->maxSize; + alac_cfg.avg_bit_rate = alac_config->averageBitRate; + alac_cfg.sample_rate = alac_config->sampleRate; + alac_cfg.channel_layout_tag = alac_config->channelLayout; + 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", + __func__, alac_config->frameLength, + alac_config->compatVersion, + alac_config->bitDepth, alac_config->pb, + alac_config->mb, alac_config->kb, + alac_config->channelCount, alac_config->maxRun, + alac_config->maxSize, + alac_config->averageBitRate, + alac_config->sampleRate, + alac_config->channelLayout); + /* Configure Media format block */ + rc = q6asm_media_format_block_alac(audio->ac, &alac_cfg, + audio->ac->stream_id); + if (rc < 0) { + pr_err("cmd media format block failed\n"); + break; + } + rc = audio_aio_enable(audio); + audio->eos_rsp = 0; + audio->eos_flag = 0; + if (!rc) { + audio->enabled = 1; + } else { + audio->enabled = 0; + pr_err("Audio Start procedure failed rc=%d\n", rc); + break; + } + pr_debug("AUDIO_START success enable[%d]\n", audio->enabled); + if (audio->stopped == 1) + audio->stopped = 0; + break; + } + default: + pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd); + break; + } + return rc; +} + +static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct q6audio_aio *audio = file->private_data; + int rc = 0; + + switch (cmd) { + case AUDIO_START: { + rc = audio_ioctl_shared(file, cmd, (void *)arg); + break; + } + case AUDIO_GET_ALAC_CONFIG: { + if (copy_to_user((void *)arg, audio->codec_cfg, + sizeof(struct msm_audio_alac_config))) { + pr_err("%s:copy_to_user for AUDIO_GET_ALAC_CONFIG failed\n", + __func__); + rc = -EFAULT; + break; + } + break; + } + case AUDIO_SET_ALAC_CONFIG: { + if (copy_from_user(audio->codec_cfg, (void *)arg, + sizeof(struct msm_audio_alac_config))) { + pr_err("%s:copy_from_user for AUDIO_SET_ALAC_CONFIG failed\n", + __func__); + rc = -EFAULT; + break; + } + break; + } + default: { + rc = audio->codec_ioctl(file, cmd, arg); + if (rc) + pr_err("Failed in utils_ioctl: %d\n", rc); + break; + } + } + return rc; +} + +#ifdef CONFIG_COMPAT +struct msm_audio_alac_config_32 { + u32 frameLength; + u8 compatVersion; + u8 bitDepth; + u8 pb; + u8 mb; + u8 kb; + u8 channelCount; + u16 maxRun; + u32 maxSize; + u32 averageBitRate; + u32 sampleRate; + u32 channelLayout; +}; + +enum { + AUDIO_GET_ALAC_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC, + (AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_alac_config_32), + AUDIO_SET_ALAC_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC, + (AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_alac_config_32) +}; + +static long audio_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + struct q6audio_aio *audio = file->private_data; + int rc = 0; + + switch (cmd) { + case AUDIO_START: { + rc = audio_ioctl_shared(file, cmd, (void *)arg); + break; + } + case AUDIO_GET_ALAC_CONFIG_32: { + struct msm_audio_alac_config *alac_config; + struct msm_audio_alac_config_32 alac_config_32; + + alac_config = (struct msm_audio_alac_config *)audio->codec_cfg; + alac_config_32.frameLength = alac_config->frameLength; + alac_config_32.compatVersion = + alac_config->compatVersion; + alac_config_32.bitDepth = alac_config->bitDepth; + alac_config_32.pb = alac_config->pb; + alac_config_32.mb = alac_config->mb; + alac_config_32.kb = alac_config->kb; + alac_config_32.channelCount = alac_config->channelCount; + alac_config_32.maxRun = alac_config->maxRun; + alac_config_32.maxSize = alac_config->maxSize; + alac_config_32.averageBitRate = alac_config->averageBitRate; + alac_config_32.sampleRate = alac_config->sampleRate; + alac_config_32.channelLayout = alac_config->channelLayout; + + if (copy_to_user((void *)arg, &alac_config_32, + sizeof(alac_config_32))) { + pr_err("%s: copy_to_user for GET_ALAC_CONFIG_32 failed\n", + __func__); + rc = -EFAULT; + break; + } + break; + } + case AUDIO_SET_ALAC_CONFIG_32: { + struct msm_audio_alac_config *alac_config; + struct msm_audio_alac_config_32 alac_config_32; + + if (copy_from_user(&alac_config_32, (void *)arg, + sizeof(alac_config_32))) { + pr_err("%s: copy_from_user for SET_ALAC_CONFIG_32 failed\n" + , __func__); + rc = -EFAULT; + break; + } + alac_config = (struct msm_audio_alac_config *)audio->codec_cfg; + alac_config->frameLength = alac_config_32.frameLength; + alac_config->compatVersion = + alac_config_32.compatVersion; + alac_config->bitDepth = alac_config_32.bitDepth; + alac_config->pb = alac_config_32.pb; + alac_config->mb = alac_config_32.mb; + alac_config->kb = alac_config_32.kb; + alac_config->channelCount = alac_config_32.channelCount; + alac_config->maxRun = alac_config_32.maxRun; + alac_config->maxSize = alac_config_32.maxSize; + alac_config->averageBitRate = alac_config_32.averageBitRate; + alac_config->sampleRate = alac_config_32.sampleRate; + alac_config->channelLayout = alac_config_32.channelLayout; + + break; + } + default: { + rc = audio->codec_compat_ioctl(file, cmd, arg); + if (rc) + pr_err("Failed in utils_ioctl: %d\n", rc); + break; + } + } + return rc; +} +#else +#define audio_compat_ioctl NULL +#endif + +static int audio_open(struct inode *inode, struct file *file) +{ + struct q6audio_aio *audio = NULL; + int rc = 0; + + /* 4 bytes represents decoder number, 1 byte for terminate string */ + char name[sizeof "msm_alac_" + 5]; + audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL); + + if (!audio) { + pr_err("Could not allocate memory for alac decode driver\n"); + return -ENOMEM; + } + audio->codec_cfg = kzalloc(sizeof(struct msm_audio_alac_config), + GFP_KERNEL); + if (!audio->codec_cfg) { + pr_err("%s:Could not allocate memory for alac config\n", + __func__); + kfree(audio); + return -ENOMEM; + } + + audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN; + audio->miscdevice = &audio_alac_misc; + audio->wakelock_voted = false; + audio->audio_ws_mgr = &audio_alac_ws_mgr; + + audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_cb, + (void *)audio); + + if (!audio->ac) { + pr_err("Could not allocate memory for audio client\n"); + kfree(audio->codec_cfg); + kfree(audio); + return -ENOMEM; + } + rc = audio_aio_open(audio, file); + if (rc < 0) { + pr_err("%s: audio_aio_open rc=%d\n", + __func__, rc); + goto fail; + } + /* open in T/NT mode */ + if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) { + rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM, + FORMAT_ALAC); + if (rc < 0) { + pr_err("NT mode Open failed rc=%d\n", rc); + rc = -ENODEV; + goto fail; + } + audio->feedback = NON_TUNNEL_MODE; + /* open ALAC decoder, expected frames is always 1*/ + audio->buf_cfg.frames_per_buf = 0x01; + audio->buf_cfg.meta_info_enable = 0x01; + } else if ((file->f_mode & FMODE_WRITE) && + !(file->f_mode & FMODE_READ)) { + rc = q6asm_open_write(audio->ac, FORMAT_ALAC); + if (rc < 0) { + pr_err("T mode Open failed rc=%d\n", rc); + rc = -ENODEV; + goto fail; + } + audio->feedback = TUNNEL_MODE; + audio->buf_cfg.meta_info_enable = 0x00; + } else { + pr_err("Not supported mode\n"); + rc = -EACCES; + goto fail; + } + + snprintf(name, sizeof(name), "msm_alac_%04x", audio->ac->session); + audio->dentry = config_debugfs_create_file(name, (void *)audio); + + if (IS_ERR_OR_NULL(audio->dentry)) + pr_debug("debugfs_create_file failed\n"); + pr_debug("%s:alacdec success mode[%d]session[%d]\n", __func__, + audio->feedback, + audio->ac->session); + return rc; +fail: + q6asm_audio_client_free(audio->ac); + kfree(audio->codec_cfg); + kfree(audio); + return rc; +} + +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); 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