| /* amrnb audio output device |
| * |
| * Copyright (C) 2008 Google, Inc. |
| * Copyright (C) 2008 HTC Corporation |
| * Copyright (c) 2011, Code Aurora Forum. 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 void q6_audio_amrnb_cb(uint32_t opcode, uint32_t token, |
| uint32_t *payload, void *priv) |
| { |
| struct q6audio_aio *audio = (struct q6audio_aio *)priv; |
| |
| pr_debug("%s:opcde = %d token = 0x%x\n", __func__, opcode, token); |
| switch (opcode) { |
| case ASM_DATA_EVENT_WRITE_DONE: |
| case ASM_DATA_EVENT_READ_DONE: |
| case ASM_DATA_CMDRSP_EOS: |
| audio_aio_cb(opcode, token, payload, audio); |
| break; |
| default: |
| pr_debug("%s:Unhandled event = 0x%8x\n", __func__, opcode); |
| break; |
| } |
| } |
| |
| #ifdef CONFIG_DEBUG_FS |
| static const struct file_operations audio_amrnb_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("AUDIO_START success enable[%d]\n", 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_amrnb_" + 5]; |
| #endif |
| audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL); |
| |
| if (audio == NULL) { |
| pr_err("Could not allocate memory for wma decode driver\n"); |
| return -ENOMEM; |
| } |
| |
| audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN; |
| |
| audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_amrnb_cb, |
| (void *)audio); |
| |
| if (!audio->ac) { |
| pr_err("Could not allocate memory for audio client\n"); |
| kfree(audio); |
| return -ENOMEM; |
| } |
| |
| /* 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_AMRNB); |
| 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_AMRNB); |
| 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; |
| } |
| rc = audio_aio_open(audio, file); |
| |
| #ifdef CONFIG_DEBUG_FS |
| snprintf(name, sizeof name, "msm_amrnb_%04x", audio->ac->session); |
| audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, |
| NULL, (void *)audio, |
| &audio_amrnb_debug_fops); |
| |
| if (IS_ERR(audio->dentry)) |
| pr_debug("debugfs_create_file failed\n"); |
| #endif |
| pr_info("%s:amrnb decoder open success, session_id = %d\n", __func__, |
| audio->ac->session); |
| return rc; |
| fail: |
| q6asm_audio_client_free(audio->ac); |
| kfree(audio); |
| return rc; |
| } |
| |
| static const struct file_operations audio_amrnb_fops = { |
| .owner = THIS_MODULE, |
| .open = audio_open, |
| .release = audio_aio_release, |
| .unlocked_ioctl = audio_ioctl, |
| .fsync = audio_aio_fsync, |
| }; |
| |
| struct miscdevice audio_amrnb_misc = { |
| .minor = MISC_DYNAMIC_MINOR, |
| .name = "msm_amrnb", |
| .fops = &audio_amrnb_fops, |
| }; |
| |
| static int __init audio_amrnb_init(void) |
| { |
| return misc_register(&audio_amrnb_misc); |
| } |
| |
| device_initcall(audio_amrnb_init); |