| /* Copyright (c) 2016-2017, 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_g711_dec.h> |
| #include <linux/compat.h> |
| #include "audio_utils_aio.h" |
| |
| static struct miscdevice audio_g711mlaw_misc; |
| static struct ws_mgr audio_g711_ws_mgr; |
| |
| static const struct file_operations audio_g711_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 | 0444, |
| NULL, (void *)data, &audio_g711_debug_fops); |
| } |
| |
| static int g711_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_g711_dec_cfg g711_dec_cfg; |
| struct msm_audio_g711_dec_config *g711_dec_config; |
| u8 channel_mapping[PCM_FORMAT_MAX_NUM_CHANNEL]; |
| |
| memset(channel_mapping, 0, PCM_FORMAT_MAX_NUM_CHANNEL); |
| memset(&g711_dec_cfg, 0, sizeof(g711_dec_cfg)); |
| |
| if (g711_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[%pK]: 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("%s: pcm output block config failed rc=%d\n", |
| __func__, rc); |
| break; |
| } |
| } |
| g711_dec_config = |
| (struct msm_audio_g711_dec_config *)audio->codec_cfg; |
| g711_dec_cfg.sample_rate = g711_dec_config->sample_rate; |
| /* Configure Media format block */ |
| rc = q6asm_media_format_block_g711(audio->ac, &g711_dec_cfg, |
| audio->ac->stream_id); |
| if (rc < 0) { |
| pr_err("%s: cmd media format block failed rc=%d\n", |
| __func__, rc); |
| 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("%s: Audio Start procedure failed rc=%d\n", |
| __func__, rc); |
| break; |
| } |
| pr_debug("%s: AUDIO_START success enable[%d]\n", |
| __func__, audio->enabled); |
| if (audio->stopped == 1) |
| audio->stopped = 0; |
| break; |
| } |
| default: |
| pr_debug("%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_G711_DEC_CONFIG: { |
| if (copy_to_user((void *)arg, audio->codec_cfg, |
| sizeof(struct msm_audio_g711_dec_config))) { |
| pr_err("%s: AUDIO_GET_G711_DEC_CONFIG failed\n", |
| __func__); |
| rc = -EFAULT; |
| } |
| break; |
| } |
| case AUDIO_SET_G711_DEC_CONFIG: { |
| if (copy_from_user(audio->codec_cfg, (void *)arg, |
| sizeof(struct msm_audio_g711_dec_config))) { |
| pr_err("%s: AUDIO_SET_G711_DEC_CONFIG failed\n", |
| __func__); |
| rc = -EFAULT; |
| } |
| break; |
| } |
| default: { |
| rc = audio->codec_ioctl(file, cmd, arg); |
| if (rc) |
| pr_err("%s: Failed in audio_aio_ioctl: %d cmd=%d\n", |
| __func__, rc, cmd); |
| break; |
| } |
| } |
| return rc; |
| } |
| |
| #ifdef CONFIG_COMPAT |
| struct msm_audio_g711_dec_config_32 { |
| u32 sample_rate; |
| }; |
| |
| enum { |
| AUDIO_SET_G711_DEC_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC, |
| (AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_g711_dec_config_32), |
| AUDIO_GET_G711_DEC_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC, |
| (AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_g711_dec_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_G711_DEC_CONFIG_32: { |
| struct msm_audio_g711_dec_config *g711_dec_config; |
| struct msm_audio_g711_dec_config_32 g711_dec_config_32; |
| |
| memset(&g711_dec_config_32, 0, sizeof(g711_dec_config_32)); |
| |
| g711_dec_config = |
| (struct msm_audio_g711_dec_config *)audio->codec_cfg; |
| g711_dec_config_32.sample_rate = g711_dec_config->sample_rate; |
| |
| if (copy_to_user((void *)arg, &g711_dec_config_32, |
| sizeof(g711_dec_config_32))) { |
| pr_err("%s: copy_to_user for AUDIO_GET_G711_DEC_CONFIG failed\n", |
| __func__); |
| rc = -EFAULT; |
| } |
| break; |
| } |
| case AUDIO_SET_G711_DEC_CONFIG_32: { |
| struct msm_audio_g711_dec_config *g711_dec_config; |
| struct msm_audio_g711_dec_config_32 g711_dec_config_32; |
| |
| memset(&g711_dec_config_32, 0, sizeof(g711_dec_config_32)); |
| |
| if (copy_from_user(&g711_dec_config_32, (void *)arg, |
| sizeof(g711_dec_config_32))) { |
| pr_err("%s: copy_from_user for AUDIO_SET_G711_DEC_CONFIG failed\n", |
| __func__); |
| rc = -EFAULT; |
| break; |
| } |
| g711_dec_config = |
| (struct msm_audio_g711_dec_config *)audio->codec_cfg; |
| g711_dec_config->sample_rate = g711_dec_config_32.sample_rate; |
| |
| break; |
| } |
| default: { |
| rc = audio->codec_compat_ioctl(file, cmd, arg); |
| if (rc) |
| pr_err("%s: Failed in audio_aio_compat_ioctl: %d cmd=%d\n", |
| __func__, rc, cmd); |
| 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_g711_" + 5]; |
| |
| audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL); |
| |
| if (!audio) |
| return -ENOMEM; |
| audio->codec_cfg = kzalloc(sizeof(struct msm_audio_g711_dec_config), |
| GFP_KERNEL); |
| if (!audio->codec_cfg) { |
| kfree(audio); |
| return -ENOMEM; |
| } |
| |
| audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN; |
| audio->miscdevice = &audio_g711mlaw_misc; |
| audio->wakelock_voted = false; |
| audio->audio_ws_mgr = &audio_g711_ws_mgr; |
| |
| init_waitqueue_head(&audio->event_wait); |
| |
| audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_cb, |
| (void *)audio); |
| |
| if (!audio->ac) { |
| pr_err("%s: Could not allocate memory for audio client\n", |
| __func__); |
| 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 */ /*foramt:G711_ALAW*/ |
| if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) { |
| rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM, |
| FORMAT_G711_MLAW_FS); |
| if (rc < 0) { |
| pr_err("%s: NT mode Open failed rc=%d\n", __func__, rc); |
| goto fail; |
| } |
| audio->feedback = NON_TUNNEL_MODE; |
| /* open G711 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_G711_MLAW_FS); |
| if (rc < 0) { |
| pr_err("%s: T mode Open failed rc=%d\n", __func__, rc); |
| goto fail; |
| } |
| audio->feedback = TUNNEL_MODE; |
| audio->buf_cfg.meta_info_enable = 0x00; |
| } else { |
| pr_err("%s: %d mode is not supported\n", __func__, |
| file->f_mode); |
| rc = -EACCES; |
| goto fail; |
| } |
| |
| snprintf(name, sizeof(name), "msm_g711_%04x", audio->ac->session); |
| audio->dentry = config_debugfs_create_file(name, (void *)audio); |
| |
| if (IS_ERR_OR_NULL(audio->dentry)) |
| pr_debug("%s: debugfs_create_file failed\n", __func__); |
| pr_debug("%s: g711dec 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 g711_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_g711_fops = { |
| .owner = THIS_MODULE, |
| .open = audio_open, |
| .release = audio_aio_release, |
| .unlocked_ioctl = audio_ioctl, |
| .compat_ioctl = audio_compat_ioctl, |
| .fsync = audio_aio_fsync, |
| }; |
| |
| static struct miscdevice audio_g711mlaw_misc = { |
| .minor = MISC_DYNAMIC_MINOR, |
| .name = "msm_g711mlaw", |
| .fops = &audio_g711_fops, |
| }; |
| |
| int __init audio_g711mlaw_init(void) |
| { |
| int ret = misc_register(&audio_g711mlaw_misc); |
| |
| if (ret == 0) |
| device_init_wakeup(audio_g711mlaw_misc.this_device, true); |
| audio_g711_ws_mgr.ref_cnt = 0; |
| mutex_init(&audio_g711_ws_mgr.ws_lock); |
| |
| return ret; |
| } |
| |
| void audio_g711mlaw_exit(void) |
| { |
| mutex_destroy(&audio_g711_ws_mgr.ws_lock); |
| misc_deregister(&audio_g711mlaw_misc); |
| } |
| |