diff options
Diffstat (limited to 'drivers/misc/qcom/qdsp6v2/audio_evrc.c')
| -rw-r--r-- | drivers/misc/qcom/qdsp6v2/audio_evrc.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/misc/qcom/qdsp6v2/audio_evrc.c b/drivers/misc/qcom/qdsp6v2/audio_evrc.c new file mode 100644 index 000000000000..08ca94e62059 --- /dev/null +++ b/drivers/misc/qcom/qdsp6v2/audio_evrc.c @@ -0,0 +1,186 @@ +/* evrc audio output device + * + * Copyright (C) 2008 Google, Inc. + * Copyright (C) 2008 HTC Corporation + * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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 "audio_utils_aio.h" + +static struct miscdevice audio_evrc_misc; +static struct ws_mgr audio_evrc_ws_mgr; + +#ifdef CONFIG_DEBUG_FS +static const struct file_operations audio_evrc_debug_fops = { + .read = audio_aio_debug_read, + .open = audio_aio_debug_open, +}; +#endif + +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: { + 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(audio->ac, + audio->pcm_cfg.sample_rate, + audio->pcm_cfg.channel_count); + if (rc < 0) { + pr_err("pcm output block config 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("%s: AUDIO_START sessionid[%d]enable[%d]\n", __func__, + audio->ac->session, + audio->enabled); + if (audio->stopped == 1) + audio->stopped = 0; + break; + } + default: + pr_debug("%s[%p]: Calling utils ioctl\n", __func__, audio); + rc = audio->codec_ioctl(file, cmd, arg); + } + return rc; +} + +static int audio_open(struct inode *inode, struct file *file) +{ + struct q6audio_aio *audio = NULL; + int rc = 0; + +#ifdef CONFIG_DEBUG_FS + /* 4 bytes represents decoder number, 1 byte for terminate string */ + char name[sizeof "msm_evrc_" + 5]; +#endif + audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL); + + if (audio == NULL) { + pr_err("Could not allocate memory for aac decode driver\n"); + return -ENOMEM; + } + + /* Settings will be re-config at AUDIO_SET_CONFIG, + * but at least we need to have initial config + */ + audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN; + audio->miscdevice = &audio_evrc_misc; + audio->wakelock_voted = false; + audio->audio_ws_mgr = &audio_evrc_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); + 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_EVRC); + if (rc < 0) { + pr_err("NT mode Open failed rc=%d\n", rc); + rc = -ENODEV; + goto fail; + } + audio->feedback = NON_TUNNEL_MODE; + 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_EVRC); + 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; + } + +#ifdef CONFIG_DEBUG_FS + snprintf(name, sizeof name, "msm_evrc_%04x", audio->ac->session); + audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, + NULL, (void *)audio, + &audio_evrc_debug_fops); + + if (IS_ERR(audio->dentry)) + pr_debug("debugfs_create_file failed\n"); +#endif + pr_info("%s:dec success mode[%d]session[%d]\n", __func__, + audio->feedback, + audio->ac->session); + return rc; +fail: + q6asm_audio_client_free(audio->ac); + kfree(audio); + return rc; +} + +static const struct file_operations audio_evrc_fops = { + .owner = THIS_MODULE, + .open = audio_open, + .release = audio_aio_release, + .unlocked_ioctl = audio_ioctl, + .fsync = audio_aio_fsync, +}; + +static struct miscdevice audio_evrc_misc = { + .minor = MISC_DYNAMIC_MINOR, + .name = "msm_evrc", + .fops = &audio_evrc_fops, +}; + +static int __init audio_evrc_init(void) +{ + int ret = misc_register(&audio_evrc_misc); + + if (ret == 0) + device_init_wakeup(audio_evrc_misc.this_device, true); + audio_evrc_ws_mgr.ref_cnt = 0; + mutex_init(&audio_evrc_ws_mgr.ws_lock); + + return ret; +} + +device_initcall(audio_evrc_init); |