1052 lines
27 KiB
C
1052 lines
27 KiB
C
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/* arch/arm/mach-msm/qdsp5/audio_aac.c
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*
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* aac audio decoder device
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*
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* Copyright (C) 2008 Google, Inc.
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* Copyright (C) 2008 HTC Corporation
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* Copyright (c) 2008-2009 QUALCOMM USA, INC.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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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/module.h>
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#include <linux/fs.h>
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#include <linux/miscdevice.h>
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#include <linux/uaccess.h>
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#include <linux/kthread.h>
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#include <linux/wait.h>
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <asm/atomic.h>
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#include <asm/ioctls.h>
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#include "audmgr.h"
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#include <mach/msm_adsp.h>
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#include <mach/msm_audio_aac.h>
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#include <mach/qdsp5/qdsp5audppcmdi.h>
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#include <mach/qdsp5/qdsp5audppmsg.h>
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#include <mach/qdsp5/qdsp5audplaycmdi.h>
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#include <mach/qdsp5/qdsp5audplaymsg.h>
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/* for queue ids - should be relative to module number*/
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#include "adsp.h"
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#ifdef DEBUG
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#define dprintk(format, arg...) \
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printk(KERN_DEBUG format, ## arg)
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#else
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#define dprintk(format, arg...) do {} while (0)
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#endif
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#define BUFSZ 32768
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#define DMASZ (BUFSZ * 2)
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#define AUDPLAY_INVALID_READ_PTR_OFFSET 0xFFFF
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#define AUDDEC_DEC_AAC 5
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#define PCM_BUFSZ_MIN 9600 /* Hold one stereo AAC frame */
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#define PCM_BUF_MAX_COUNT 5 /* DSP only accepts 5 buffers at most
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but support 2 buffers currently */
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#define ROUTING_MODE_FTRT 1
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#define ROUTING_MODE_RT 2
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/* Decoder status received from AUDPPTASK */
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#define AUDPP_DEC_STATUS_SLEEP 0
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#define AUDPP_DEC_STATUS_INIT 1
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#define AUDPP_DEC_STATUS_CFG 2
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#define AUDPP_DEC_STATUS_PLAY 3
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struct buffer {
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void *data;
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unsigned size;
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unsigned used; /* Input usage actual DSP produced PCM size */
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unsigned addr;
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};
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struct audio {
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struct buffer out[2];
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spinlock_t dsp_lock;
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uint8_t out_head;
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uint8_t out_tail;
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uint8_t out_needed; /* number of buffers the dsp is waiting for */
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atomic_t out_bytes;
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struct mutex lock;
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struct mutex write_lock;
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wait_queue_head_t write_wait;
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/* Host PCM section */
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struct buffer in[PCM_BUF_MAX_COUNT];
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struct mutex read_lock;
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wait_queue_head_t read_wait; /* Wait queue for read */
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char *read_data; /* pointer to reader buffer */
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dma_addr_t read_phys; /* physical address of reader buffer */
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uint8_t read_next; /* index to input buffers to be read next */
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uint8_t fill_next; /* index to buffer that DSP should be filling */
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uint8_t pcm_buf_count; /* number of pcm buffer allocated */
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/* ---- End of Host PCM section */
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struct msm_adsp_module *audplay;
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/* configuration to use on next enable */
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uint32_t out_sample_rate;
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uint32_t out_channel_mode;
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struct msm_audio_aac_config aac_config;
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struct audmgr audmgr;
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/* data allocated for various buffers */
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char *data;
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dma_addr_t phys;
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int rflush; /* Read flush */
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int wflush; /* Write flush */
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int opened;
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int enabled;
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int running;
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int stopped; /* set when stopped, cleared on flush */
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int pcm_feedback;
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int buf_refresh;
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int reserved; /* A byte is being reserved */
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char rsv_byte; /* Handle odd length user data */
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unsigned volume;
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uint16_t dec_id;
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uint32_t read_ptr_offset;
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};
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static int auddec_dsp_config(struct audio *audio, int enable);
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static void audpp_cmd_cfg_adec_params(struct audio *audio);
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static void audpp_cmd_cfg_routing_mode(struct audio *audio);
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static void audplay_send_data(struct audio *audio, unsigned needed);
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static void audplay_config_hostpcm(struct audio *audio);
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static void audplay_buffer_refresh(struct audio *audio);
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static void audio_dsp_event(void *private, unsigned id, uint16_t *msg);
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/* must be called with audio->lock held */
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static int audio_enable(struct audio *audio)
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{
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struct audmgr_config cfg;
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int rc;
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dprintk("audio_enable()\n");
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if (audio->enabled)
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return 0;
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audio->out_tail = 0;
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audio->out_needed = 0;
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cfg.tx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE;
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cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_48000;
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cfg.def_method = RPC_AUD_DEF_METHOD_PLAYBACK;
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cfg.codec = RPC_AUD_DEF_CODEC_AAC;
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cfg.snd_method = RPC_SND_METHOD_MIDI;
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rc = audmgr_enable(&audio->audmgr, &cfg);
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if (rc < 0)
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return rc;
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if (msm_adsp_enable(audio->audplay)) {
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pr_err("audio: msm_adsp_enable(audplay) failed\n");
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audmgr_disable(&audio->audmgr);
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return -ENODEV;
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}
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if (audpp_enable(audio->dec_id, audio_dsp_event, audio)) {
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pr_err("audio: audpp_enable() failed\n");
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msm_adsp_disable(audio->audplay);
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audmgr_disable(&audio->audmgr);
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return -ENODEV;
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}
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audio->enabled = 1;
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return 0;
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}
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/* must be called with audio->lock held */
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static int audio_disable(struct audio *audio)
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{
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dprintk("audio_disable()\n");
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if (audio->enabled) {
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audio->enabled = 0;
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auddec_dsp_config(audio, 0);
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wake_up(&audio->write_wait);
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wake_up(&audio->read_wait);
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msm_adsp_disable(audio->audplay);
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audpp_disable(audio->dec_id, audio);
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audmgr_disable(&audio->audmgr);
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audio->out_needed = 0;
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}
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return 0;
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}
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/* ------------------- dsp --------------------- */
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static void audio_update_pcm_buf_entry(struct audio *audio, uint32_t *payload)
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{
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uint8_t index;
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unsigned long flags;
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if (audio->rflush)
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return;
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spin_lock_irqsave(&audio->dsp_lock, flags);
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for (index = 0; index < payload[1]; index++) {
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if (audio->in[audio->fill_next].addr ==
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payload[2 + index * 2]) {
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dprintk("audio_update_pcm_buf_entry: in[%d] ready\n",
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audio->fill_next);
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audio->in[audio->fill_next].used =
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payload[3 + index * 2];
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if ((++audio->fill_next) == audio->pcm_buf_count)
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audio->fill_next = 0;
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} else {
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pr_err
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("audio_update_pcm_buf_entry: expected=%x ret=%x\n"
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, audio->in[audio->fill_next].addr,
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payload[1 + index * 2]);
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break;
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}
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}
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if (audio->in[audio->fill_next].used == 0) {
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audplay_buffer_refresh(audio);
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} else {
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dprintk("audio_update_pcm_buf_entry: read cannot keep up\n");
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audio->buf_refresh = 1;
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}
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wake_up(&audio->read_wait);
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spin_unlock_irqrestore(&audio->dsp_lock, flags);
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}
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static void audplay_dsp_event(void *data, unsigned id, size_t len,
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void (*getevent) (void *ptr, size_t len))
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{
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struct audio *audio = data;
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uint32_t msg[28];
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getevent(msg, sizeof(msg));
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dprintk("audplay_dsp_event: msg_id=%x\n", id);
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switch (id) {
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case AUDPLAY_MSG_DEC_NEEDS_DATA:
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audplay_send_data(audio, 1);
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break;
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case AUDPLAY_MSG_BUFFER_UPDATE:
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audio_update_pcm_buf_entry(audio, msg);
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break;
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default:
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pr_err("unexpected message from decoder \n");
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}
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}
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static void audio_dsp_event(void *private, unsigned id, uint16_t *msg)
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{
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struct audio *audio = private;
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switch (id) {
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case AUDPP_MSG_STATUS_MSG:{
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unsigned status = msg[1];
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switch (status) {
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case AUDPP_DEC_STATUS_SLEEP:
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dprintk("decoder status: sleep \n");
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break;
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case AUDPP_DEC_STATUS_INIT:
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dprintk("decoder status: init \n");
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audpp_cmd_cfg_routing_mode(audio);
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break;
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case AUDPP_DEC_STATUS_CFG:
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dprintk("decoder status: cfg \n");
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break;
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case AUDPP_DEC_STATUS_PLAY:
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dprintk("decoder status: play \n");
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if (audio->pcm_feedback) {
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audplay_config_hostpcm(audio);
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audplay_buffer_refresh(audio);
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}
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break;
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default:
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pr_err("unknown decoder status \n");
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}
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break;
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}
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case AUDPP_MSG_CFG_MSG:
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if (msg[0] == AUDPP_MSG_ENA_ENA) {
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dprintk("audio_dsp_event: CFG_MSG ENABLE\n");
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auddec_dsp_config(audio, 1);
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audio->out_needed = 0;
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audio->running = 1;
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audpp_set_volume_and_pan(audio->dec_id, audio->volume,
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0);
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audpp_avsync(audio->dec_id, 22050);
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} else if (msg[0] == AUDPP_MSG_ENA_DIS) {
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dprintk("audio_dsp_event: CFG_MSG DISABLE\n");
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audpp_avsync(audio->dec_id, 0);
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audio->running = 0;
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} else {
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pr_err("audio_dsp_event: CFG_MSG %d?\n", msg[0]);
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}
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break;
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case AUDPP_MSG_ROUTING_ACK:
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dprintk("audio_dsp_event: ROUTING_ACK mode=%d\n", msg[1]);
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audpp_cmd_cfg_adec_params(audio);
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break;
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case AUDPP_MSG_FLUSH_ACK:
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dprintk("%s: FLUSH_ACK\n", __func__);
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audio->wflush = 0;
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audio->rflush = 0;
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if (audio->pcm_feedback)
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audplay_buffer_refresh(audio);
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break;
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default:
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pr_err("audio_dsp_event: UNKNOWN (%d)\n", id);
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}
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}
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struct msm_adsp_ops audplay_adsp_ops_aac = {
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.event = audplay_dsp_event,
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};
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#define audplay_send_queue0(audio, cmd, len) \
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msm_adsp_write(audio->audplay, QDSP_uPAudPlay0BitStreamCtrlQueue, \
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cmd, len)
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static int auddec_dsp_config(struct audio *audio, int enable)
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{
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audpp_cmd_cfg_dec_type cmd;
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memset(&cmd, 0, sizeof(cmd));
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cmd.cmd_id = AUDPP_CMD_CFG_DEC_TYPE;
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if (enable)
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cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC |
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AUDPP_CMD_ENA_DEC_V | AUDDEC_DEC_AAC;
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else
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cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | AUDPP_CMD_DIS_DEC_V;
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return audpp_send_queue1(&cmd, sizeof(cmd));
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}
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static void audpp_cmd_cfg_adec_params(struct audio *audio)
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{
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audpp_cmd_cfg_adec_params_aac cmd;
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memset(&cmd, 0, sizeof(cmd));
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cmd.common.cmd_id = AUDPP_CMD_CFG_ADEC_PARAMS;
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cmd.common.length = AUDPP_CMD_CFG_ADEC_PARAMS_AAC_LEN;
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cmd.common.dec_id = audio->dec_id;
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cmd.common.input_sampling_frequency = audio->out_sample_rate;
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cmd.format = audio->aac_config.format;
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cmd.audio_object = audio->aac_config.audio_object;
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cmd.ep_config = audio->aac_config.ep_config;
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cmd.aac_section_data_resilience_flag =
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audio->aac_config.aac_section_data_resilience_flag;
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cmd.aac_scalefactor_data_resilience_flag =
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audio->aac_config.aac_scalefactor_data_resilience_flag;
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cmd.aac_spectral_data_resilience_flag =
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audio->aac_config.aac_spectral_data_resilience_flag;
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cmd.sbr_on_flag = audio->aac_config.sbr_on_flag;
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cmd.sbr_ps_on_flag = audio->aac_config.sbr_ps_on_flag;
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cmd.channel_configuration = audio->aac_config.channel_configuration;
|
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audpp_send_queue2(&cmd, sizeof(cmd));
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}
|
||
|
|
||
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static void audpp_cmd_cfg_routing_mode(struct audio *audio)
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||
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{
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||
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struct audpp_cmd_routing_mode cmd;
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dprintk("audpp_cmd_cfg_routing_mode()\n");
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memset(&cmd, 0, sizeof(cmd));
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cmd.cmd_id = AUDPP_CMD_ROUTING_MODE;
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cmd.object_number = audio->dec_id;
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if (audio->pcm_feedback)
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cmd.routing_mode = ROUTING_MODE_FTRT;
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else
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cmd.routing_mode = ROUTING_MODE_RT;
|
||
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||
|
audpp_send_queue1(&cmd, sizeof(cmd));
|
||
|
}
|
||
|
|
||
|
static int audplay_dsp_send_data_avail(struct audio *audio,
|
||
|
unsigned idx, unsigned len)
|
||
|
{
|
||
|
audplay_cmd_bitstream_data_avail cmd;
|
||
|
|
||
|
cmd.cmd_id = AUDPLAY_CMD_BITSTREAM_DATA_AVAIL;
|
||
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cmd.decoder_id = audio->dec_id;
|
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|
cmd.buf_ptr = audio->out[idx].addr;
|
||
|
cmd.buf_size = len / 2;
|
||
|
cmd.partition_number = 0;
|
||
|
return audplay_send_queue0(audio, &cmd, sizeof(cmd));
|
||
|
}
|
||
|
|
||
|
static void audplay_buffer_refresh(struct audio *audio)
|
||
|
{
|
||
|
struct audplay_cmd_buffer_refresh refresh_cmd;
|
||
|
|
||
|
refresh_cmd.cmd_id = AUDPLAY_CMD_BUFFER_REFRESH;
|
||
|
refresh_cmd.num_buffers = 1;
|
||
|
refresh_cmd.buf0_address = audio->in[audio->fill_next].addr;
|
||
|
refresh_cmd.buf0_length = audio->in[audio->fill_next].size -
|
||
|
(audio->in[audio->fill_next].size % 1024); /* AAC frame size */
|
||
|
refresh_cmd.buf_read_count = 0;
|
||
|
dprintk("audplay_buffer_fresh: buf0_addr=%x buf0_len=%d\n",
|
||
|
refresh_cmd.buf0_address, refresh_cmd.buf0_length);
|
||
|
(void)audplay_send_queue0(audio, &refresh_cmd, sizeof(refresh_cmd));
|
||
|
}
|
||
|
|
||
|
static void audplay_config_hostpcm(struct audio *audio)
|
||
|
{
|
||
|
struct audplay_cmd_hpcm_buf_cfg cfg_cmd;
|
||
|
|
||
|
dprintk("audplay_config_hostpcm()\n");
|
||
|
cfg_cmd.cmd_id = AUDPLAY_CMD_HPCM_BUF_CFG;
|
||
|
cfg_cmd.max_buffers = audio->pcm_buf_count;
|
||
|
cfg_cmd.byte_swap = 0;
|
||
|
cfg_cmd.hostpcm_config = (0x8000) | (0x4000);
|
||
|
cfg_cmd.feedback_frequency = 1;
|
||
|
cfg_cmd.partition_number = 0;
|
||
|
(void)audplay_send_queue0(audio, &cfg_cmd, sizeof(cfg_cmd));
|
||
|
|
||
|
}
|
||
|
|
||
|
static void audplay_send_data(struct audio *audio, unsigned needed)
|
||
|
{
|
||
|
struct buffer *frame;
|
||
|
unsigned long flags;
|
||
|
|
||
|
spin_lock_irqsave(&audio->dsp_lock, flags);
|
||
|
if (!audio->running)
|
||
|
goto done;
|
||
|
|
||
|
if (needed && !audio->wflush) {
|
||
|
/* We were called from the callback because the DSP
|
||
|
* requested more data. Note that the DSP does want
|
||
|
* more data, and if a buffer was in-flight, mark it
|
||
|
* as available (since the DSP must now be done with
|
||
|
* it).
|
||
|
*/
|
||
|
audio->out_needed = 1;
|
||
|
frame = audio->out + audio->out_tail;
|
||
|
if (frame->used == 0xffffffff) {
|
||
|
dprintk("frame %d free\n", audio->out_tail);
|
||
|
frame->used = 0;
|
||
|
audio->out_tail ^= 1;
|
||
|
wake_up(&audio->write_wait);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (audio->out_needed) {
|
||
|
/* If the DSP currently wants data and we have a
|
||
|
* buffer available, we will send it and reset
|
||
|
* the needed flag. We'll mark the buffer as in-flight
|
||
|
* so that it won't be recycled until the next buffer
|
||
|
* is requested
|
||
|
*/
|
||
|
|
||
|
frame = audio->out + audio->out_tail;
|
||
|
if (frame->used) {
|
||
|
BUG_ON(frame->used == 0xffffffff);
|
||
|
/* printk("frame %d busy\n", audio->out_tail); */
|
||
|
audplay_dsp_send_data_avail(audio, audio->out_tail,
|
||
|
frame->used);
|
||
|
frame->used = 0xffffffff;
|
||
|
audio->out_needed = 0;
|
||
|
}
|
||
|
}
|
||
|
done:
|
||
|
spin_unlock_irqrestore(&audio->dsp_lock, flags);
|
||
|
}
|
||
|
|
||
|
/* ------------------- device --------------------- */
|
||
|
|
||
|
static void audio_flush(struct audio *audio)
|
||
|
{
|
||
|
audio->out[0].used = 0;
|
||
|
audio->out[1].used = 0;
|
||
|
audio->out_head = 0;
|
||
|
audio->out_tail = 0;
|
||
|
audio->reserved = 0;
|
||
|
audio->out_needed = 0;
|
||
|
atomic_set(&audio->out_bytes, 0);
|
||
|
}
|
||
|
|
||
|
static void audio_flush_pcm_buf(struct audio *audio)
|
||
|
{
|
||
|
uint8_t index;
|
||
|
|
||
|
for (index = 0; index < PCM_BUF_MAX_COUNT; index++)
|
||
|
audio->in[index].used = 0;
|
||
|
audio->buf_refresh = 0;
|
||
|
audio->read_next = 0;
|
||
|
audio->fill_next = 0;
|
||
|
}
|
||
|
|
||
|
static int audaac_validate_usr_config(struct msm_audio_aac_config *config)
|
||
|
{
|
||
|
int ret_val = -1;
|
||
|
|
||
|
if (config->format != AUDIO_AAC_FORMAT_ADTS &&
|
||
|
config->format != AUDIO_AAC_FORMAT_RAW &&
|
||
|
config->format != AUDIO_AAC_FORMAT_PSUEDO_RAW &&
|
||
|
config->format != AUDIO_AAC_FORMAT_LOAS)
|
||
|
goto done;
|
||
|
|
||
|
if (config->audio_object != AUDIO_AAC_OBJECT_LC &&
|
||
|
config->audio_object != AUDIO_AAC_OBJECT_LTP &&
|
||
|
config->audio_object != AUDIO_AAC_OBJECT_ERLC)
|
||
|
goto done;
|
||
|
|
||
|
if (config->audio_object == AUDIO_AAC_OBJECT_ERLC) {
|
||
|
if (config->ep_config > 3)
|
||
|
goto done;
|
||
|
if (config->aac_scalefactor_data_resilience_flag !=
|
||
|
AUDIO_AAC_SCA_DATA_RES_OFF &&
|
||
|
config->aac_scalefactor_data_resilience_flag !=
|
||
|
AUDIO_AAC_SCA_DATA_RES_ON)
|
||
|
goto done;
|
||
|
if (config->aac_section_data_resilience_flag !=
|
||
|
AUDIO_AAC_SEC_DATA_RES_OFF &&
|
||
|
config->aac_section_data_resilience_flag !=
|
||
|
AUDIO_AAC_SEC_DATA_RES_ON)
|
||
|
goto done;
|
||
|
if (config->aac_spectral_data_resilience_flag !=
|
||
|
AUDIO_AAC_SPEC_DATA_RES_OFF &&
|
||
|
config->aac_spectral_data_resilience_flag !=
|
||
|
AUDIO_AAC_SPEC_DATA_RES_ON)
|
||
|
goto done;
|
||
|
} else {
|
||
|
config->aac_section_data_resilience_flag =
|
||
|
AUDIO_AAC_SEC_DATA_RES_OFF;
|
||
|
config->aac_scalefactor_data_resilience_flag =
|
||
|
AUDIO_AAC_SCA_DATA_RES_OFF;
|
||
|
config->aac_spectral_data_resilience_flag =
|
||
|
AUDIO_AAC_SPEC_DATA_RES_OFF;
|
||
|
}
|
||
|
|
||
|
if (config->sbr_on_flag != AUDIO_AAC_SBR_ON_FLAG_OFF &&
|
||
|
config->sbr_on_flag != AUDIO_AAC_SBR_ON_FLAG_ON)
|
||
|
goto done;
|
||
|
|
||
|
if (config->sbr_ps_on_flag != AUDIO_AAC_SBR_PS_ON_FLAG_OFF &&
|
||
|
config->sbr_ps_on_flag != AUDIO_AAC_SBR_PS_ON_FLAG_ON)
|
||
|
goto done;
|
||
|
|
||
|
if (config->dual_mono_mode > AUDIO_AAC_DUAL_MONO_PL_SR)
|
||
|
goto done;
|
||
|
|
||
|
if (config->channel_configuration > 2)
|
||
|
goto done;
|
||
|
|
||
|
ret_val = 0;
|
||
|
done:
|
||
|
return ret_val;
|
||
|
}
|
||
|
|
||
|
static void audio_ioport_reset(struct audio *audio)
|
||
|
{
|
||
|
/* Make sure read/write thread are free from
|
||
|
* sleep and knowing that system is not able
|
||
|
* to process io request at the moment
|
||
|
*/
|
||
|
wake_up(&audio->write_wait);
|
||
|
mutex_lock(&audio->write_lock);
|
||
|
audio_flush(audio);
|
||
|
mutex_unlock(&audio->write_lock);
|
||
|
wake_up(&audio->read_wait);
|
||
|
mutex_lock(&audio->read_lock);
|
||
|
audio_flush_pcm_buf(audio);
|
||
|
mutex_unlock(&audio->read_lock);
|
||
|
}
|
||
|
|
||
|
static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
||
|
{
|
||
|
struct audio *audio = file->private_data;
|
||
|
int rc = 0;
|
||
|
|
||
|
dprintk("audio_ioctl() cmd = %d\n", cmd);
|
||
|
|
||
|
if (cmd == AUDIO_GET_STATS) {
|
||
|
struct msm_audio_stats stats;
|
||
|
stats.byte_count = audpp_avsync_byte_count(audio->dec_id);
|
||
|
stats.sample_count = audpp_avsync_sample_count(audio->dec_id);
|
||
|
if (copy_to_user((void *)arg, &stats, sizeof(stats)))
|
||
|
return -EFAULT;
|
||
|
return 0;
|
||
|
}
|
||
|
if (cmd == AUDIO_SET_VOLUME) {
|
||
|
unsigned long flags;
|
||
|
spin_lock_irqsave(&audio->dsp_lock, flags);
|
||
|
audio->volume = arg;
|
||
|
if (audio->running)
|
||
|
audpp_set_volume_and_pan(audio->dec_id, arg, 0);
|
||
|
spin_unlock_irqrestore(&audio->dsp_lock, flags);
|
||
|
return 0;
|
||
|
}
|
||
|
mutex_lock(&audio->lock);
|
||
|
switch (cmd) {
|
||
|
case AUDIO_START:
|
||
|
rc = audio_enable(audio);
|
||
|
break;
|
||
|
case AUDIO_STOP:
|
||
|
rc = audio_disable(audio);
|
||
|
audio->stopped = 1;
|
||
|
audio_ioport_reset(audio);
|
||
|
audio->stopped = 0;
|
||
|
break;
|
||
|
case AUDIO_FLUSH:
|
||
|
dprintk("%s: AUDIO_FLUSH\n", __func__);
|
||
|
audio->rflush = 1;
|
||
|
audio->wflush = 1;
|
||
|
audio_ioport_reset(audio);
|
||
|
if (audio->running)
|
||
|
audpp_flush(audio->dec_id);
|
||
|
else {
|
||
|
audio->rflush = 0;
|
||
|
audio->wflush = 0;
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case AUDIO_SET_CONFIG:{
|
||
|
struct msm_audio_config config;
|
||
|
|
||
|
if (copy_from_user
|
||
|
(&config, (void *)arg, sizeof(config))) {
|
||
|
rc = -EFAULT;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (config.channel_count == 1) {
|
||
|
config.channel_count =
|
||
|
AUDPP_CMD_PCM_INTF_MONO_V;
|
||
|
} else if (config.channel_count == 2) {
|
||
|
config.channel_count =
|
||
|
AUDPP_CMD_PCM_INTF_STEREO_V;
|
||
|
} else {
|
||
|
rc = -EINVAL;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
audio->out_sample_rate = config.sample_rate;
|
||
|
audio->out_channel_mode = config.channel_count;
|
||
|
rc = 0;
|
||
|
break;
|
||
|
}
|
||
|
case AUDIO_GET_CONFIG:{
|
||
|
struct msm_audio_config config;
|
||
|
config.buffer_size = BUFSZ;
|
||
|
config.buffer_count = 2;
|
||
|
config.sample_rate = audio->out_sample_rate;
|
||
|
if (audio->out_channel_mode ==
|
||
|
AUDPP_CMD_PCM_INTF_MONO_V) {
|
||
|
config.channel_count = 1;
|
||
|
} else {
|
||
|
config.channel_count = 2;
|
||
|
}
|
||
|
config.unused[0] = 0;
|
||
|
config.unused[1] = 0;
|
||
|
config.unused[2] = 0;
|
||
|
if (copy_to_user((void *)arg, &config,
|
||
|
sizeof(config)))
|
||
|
rc = -EFAULT;
|
||
|
else
|
||
|
rc = 0;
|
||
|
|
||
|
break;
|
||
|
}
|
||
|
case AUDIO_GET_AAC_CONFIG:{
|
||
|
if (copy_to_user((void *)arg, &audio->aac_config,
|
||
|
sizeof(audio->aac_config)))
|
||
|
rc = -EFAULT;
|
||
|
else
|
||
|
rc = 0;
|
||
|
break;
|
||
|
}
|
||
|
case AUDIO_SET_AAC_CONFIG:{
|
||
|
struct msm_audio_aac_config usr_config;
|
||
|
|
||
|
if (copy_from_user
|
||
|
(&usr_config, (void *)arg,
|
||
|
sizeof(usr_config))) {
|
||
|
rc = -EFAULT;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (audaac_validate_usr_config(&usr_config) == 0) {
|
||
|
audio->aac_config = usr_config;
|
||
|
rc = 0;
|
||
|
} else
|
||
|
rc = -EINVAL;
|
||
|
|
||
|
break;
|
||
|
}
|
||
|
case AUDIO_GET_PCM_CONFIG:{
|
||
|
struct msm_audio_pcm_config config;
|
||
|
config.pcm_feedback = 0;
|
||
|
config.buffer_count = PCM_BUF_MAX_COUNT;
|
||
|
config.buffer_size = PCM_BUFSZ_MIN;
|
||
|
if (copy_to_user((void *)arg, &config,
|
||
|
sizeof(config)))
|
||
|
rc = -EFAULT;
|
||
|
else
|
||
|
rc = 0;
|
||
|
break;
|
||
|
}
|
||
|
case AUDIO_SET_PCM_CONFIG:{
|
||
|
struct msm_audio_pcm_config config;
|
||
|
if (copy_from_user
|
||
|
(&config, (void *)arg, sizeof(config))) {
|
||
|
rc = -EFAULT;
|
||
|
break;
|
||
|
}
|
||
|
if ((config.buffer_count > PCM_BUF_MAX_COUNT) ||
|
||
|
(config.buffer_count == 1))
|
||
|
config.buffer_count = PCM_BUF_MAX_COUNT;
|
||
|
|
||
|
if (config.buffer_size < PCM_BUFSZ_MIN)
|
||
|
config.buffer_size = PCM_BUFSZ_MIN;
|
||
|
|
||
|
/* Check if pcm feedback is required */
|
||
|
if ((config.pcm_feedback) && (!audio->read_data)) {
|
||
|
dprintk("ioctl: allocate PCM buffer %d\n",
|
||
|
config.buffer_count *
|
||
|
config.buffer_size);
|
||
|
audio->read_data =
|
||
|
dma_alloc_coherent(NULL,
|
||
|
config.buffer_size *
|
||
|
config.buffer_count,
|
||
|
&audio->read_phys,
|
||
|
GFP_KERNEL);
|
||
|
if (!audio->read_data) {
|
||
|
pr_err("audio_aac: buf alloc fail\n");
|
||
|
rc = -1;
|
||
|
} else {
|
||
|
uint8_t index;
|
||
|
uint32_t offset = 0;
|
||
|
audio->pcm_feedback = 1;
|
||
|
audio->buf_refresh = 0;
|
||
|
audio->pcm_buf_count =
|
||
|
config.buffer_count;
|
||
|
audio->read_next = 0;
|
||
|
audio->fill_next = 0;
|
||
|
|
||
|
for (index = 0;
|
||
|
index < config.buffer_count;
|
||
|
index++) {
|
||
|
audio->in[index].data =
|
||
|
audio->read_data + offset;
|
||
|
audio->in[index].addr =
|
||
|
audio->read_phys + offset;
|
||
|
audio->in[index].size =
|
||
|
config.buffer_size;
|
||
|
audio->in[index].used = 0;
|
||
|
offset += config.buffer_size;
|
||
|
}
|
||
|
rc = 0;
|
||
|
}
|
||
|
} else {
|
||
|
rc = 0;
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
case AUDIO_PAUSE:
|
||
|
dprintk("%s: AUDIO_PAUSE %ld\n", __func__, arg);
|
||
|
rc = audpp_pause(audio->dec_id, (int) arg);
|
||
|
break;
|
||
|
default:
|
||
|
rc = -EINVAL;
|
||
|
}
|
||
|
mutex_unlock(&audio->lock);
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
static ssize_t audio_read(struct file *file, char __user *buf, size_t count,
|
||
|
loff_t *pos)
|
||
|
{
|
||
|
struct audio *audio = file->private_data;
|
||
|
const char __user *start = buf;
|
||
|
int rc = 0;
|
||
|
|
||
|
if (!audio->pcm_feedback)
|
||
|
return 0; /* PCM feedback is not enabled. Nothing to read */
|
||
|
|
||
|
mutex_lock(&audio->read_lock);
|
||
|
dprintk("audio_read() %d \n", count);
|
||
|
while (count > 0) {
|
||
|
rc = wait_event_interruptible(audio->read_wait,
|
||
|
(audio->in[audio->read_next].
|
||
|
used > 0) || (audio->stopped)
|
||
|
|| (audio->rflush));
|
||
|
|
||
|
if (rc < 0)
|
||
|
break;
|
||
|
|
||
|
if (audio->stopped || audio->rflush) {
|
||
|
rc = -EBUSY;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (count < audio->in[audio->read_next].used) {
|
||
|
/* Read must happen in frame boundary. Since driver
|
||
|
does not know frame size, read count must be greater
|
||
|
or equal to size of PCM samples */
|
||
|
dprintk("audio_read: no partial frame done reading\n");
|
||
|
break;
|
||
|
} else {
|
||
|
dprintk("audio_read: read from in[%d]\n",
|
||
|
audio->read_next);
|
||
|
if (copy_to_user
|
||
|
(buf, audio->in[audio->read_next].data,
|
||
|
audio->in[audio->read_next].used)) {
|
||
|
pr_err("audio_read: invalid addr %x \n",
|
||
|
(unsigned int)buf);
|
||
|
rc = -EFAULT;
|
||
|
break;
|
||
|
}
|
||
|
count -= audio->in[audio->read_next].used;
|
||
|
buf += audio->in[audio->read_next].used;
|
||
|
audio->in[audio->read_next].used = 0;
|
||
|
if ((++audio->read_next) == audio->pcm_buf_count)
|
||
|
audio->read_next = 0;
|
||
|
if (audio->in[audio->read_next].used == 0)
|
||
|
break; /* No data ready at this moment
|
||
|
* Exit while loop to prevent
|
||
|
* output thread sleep too long
|
||
|
*/
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* don't feed output buffer to HW decoder during flushing
|
||
|
* buffer refresh command will be sent once flush completes
|
||
|
* send buf refresh command here can confuse HW decoder
|
||
|
*/
|
||
|
if (audio->buf_refresh && !audio->rflush) {
|
||
|
audio->buf_refresh = 0;
|
||
|
dprintk("audio_read: kick start pcm feedback again\n");
|
||
|
audplay_buffer_refresh(audio);
|
||
|
}
|
||
|
|
||
|
mutex_unlock(&audio->read_lock);
|
||
|
|
||
|
if (buf > start)
|
||
|
rc = buf - start;
|
||
|
|
||
|
dprintk("audio_read: read %d bytes\n", rc);
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
static ssize_t audio_write(struct file *file, const char __user *buf,
|
||
|
size_t count, loff_t *pos)
|
||
|
{
|
||
|
struct audio *audio = file->private_data;
|
||
|
const char __user *start = buf;
|
||
|
struct buffer *frame;
|
||
|
size_t xfer;
|
||
|
char *cpy_ptr;
|
||
|
int rc = 0;
|
||
|
unsigned dsize;
|
||
|
|
||
|
mutex_lock(&audio->write_lock);
|
||
|
while (count > 0) {
|
||
|
frame = audio->out + audio->out_head;
|
||
|
cpy_ptr = frame->data;
|
||
|
dsize = 0;
|
||
|
rc = wait_event_interruptible(audio->write_wait,
|
||
|
(frame->used == 0)
|
||
|
|| (audio->stopped)
|
||
|
|| (audio->wflush));
|
||
|
if (rc < 0)
|
||
|
break;
|
||
|
if (audio->stopped || audio->wflush) {
|
||
|
rc = -EBUSY;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (audio->reserved) {
|
||
|
dprintk("%s: append reserved byte %x\n",
|
||
|
__func__, audio->rsv_byte);
|
||
|
*cpy_ptr = audio->rsv_byte;
|
||
|
xfer = (count > (frame->size - 1)) ?
|
||
|
frame->size - 1 : count;
|
||
|
cpy_ptr++;
|
||
|
dsize = 1;
|
||
|
audio->reserved = 0;
|
||
|
} else
|
||
|
xfer = (count > frame->size) ? frame->size : count;
|
||
|
|
||
|
if (copy_from_user(cpy_ptr, buf, xfer)) {
|
||
|
rc = -EFAULT;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
dsize += xfer;
|
||
|
if (dsize & 1) {
|
||
|
audio->rsv_byte = ((char *) frame->data)[dsize - 1];
|
||
|
dprintk("%s: odd length buf reserve last byte %x\n",
|
||
|
__func__, audio->rsv_byte);
|
||
|
audio->reserved = 1;
|
||
|
dsize--;
|
||
|
}
|
||
|
count -= xfer;
|
||
|
buf += xfer;
|
||
|
|
||
|
if (dsize > 0) {
|
||
|
audio->out_head ^= 1;
|
||
|
frame->used = dsize;
|
||
|
audplay_send_data(audio, 0);
|
||
|
}
|
||
|
}
|
||
|
mutex_unlock(&audio->write_lock);
|
||
|
if (buf > start)
|
||
|
return buf - start;
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
static int audio_release(struct inode *inode, struct file *file)
|
||
|
{
|
||
|
struct audio *audio = file->private_data;
|
||
|
|
||
|
dprintk("audio_release()\n");
|
||
|
|
||
|
mutex_lock(&audio->lock);
|
||
|
audio_disable(audio);
|
||
|
audio_flush(audio);
|
||
|
audio_flush_pcm_buf(audio);
|
||
|
msm_adsp_put(audio->audplay);
|
||
|
audio->audplay = NULL;
|
||
|
audio->opened = 0;
|
||
|
audio->reserved = 0;
|
||
|
dma_free_coherent(NULL, DMASZ, audio->data, audio->phys);
|
||
|
audio->data = NULL;
|
||
|
if (audio->read_data != NULL) {
|
||
|
dma_free_coherent(NULL,
|
||
|
audio->in[0].size * audio->pcm_buf_count,
|
||
|
audio->read_data, audio->read_phys);
|
||
|
audio->read_data = NULL;
|
||
|
}
|
||
|
audio->pcm_feedback = 0;
|
||
|
mutex_unlock(&audio->lock);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
struct audio the_aac_audio;
|
||
|
|
||
|
static int audio_open(struct inode *inode, struct file *file)
|
||
|
{
|
||
|
struct audio *audio = &the_aac_audio;
|
||
|
int rc;
|
||
|
|
||
|
mutex_lock(&audio->lock);
|
||
|
|
||
|
if (audio->opened) {
|
||
|
pr_err("audio: busy\n");
|
||
|
rc = -EBUSY;
|
||
|
goto done;
|
||
|
}
|
||
|
|
||
|
if (!audio->data) {
|
||
|
audio->data = dma_alloc_coherent(NULL, DMASZ,
|
||
|
&audio->phys, GFP_KERNEL);
|
||
|
if (!audio->data) {
|
||
|
pr_err("audio: could not allocate DMA buffers\n");
|
||
|
rc = -ENOMEM;
|
||
|
goto done;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
rc = audmgr_open(&audio->audmgr);
|
||
|
if (rc)
|
||
|
goto done;
|
||
|
|
||
|
rc = msm_adsp_get("AUDPLAY0TASK", &audio->audplay,
|
||
|
&audplay_adsp_ops_aac, audio);
|
||
|
if (rc) {
|
||
|
pr_err("audio: failed to get audplay0 dsp module\n");
|
||
|
goto done;
|
||
|
}
|
||
|
audio->out_sample_rate = 44100;
|
||
|
audio->out_channel_mode = AUDPP_CMD_PCM_INTF_STEREO_V;
|
||
|
audio->aac_config.format = AUDIO_AAC_FORMAT_ADTS;
|
||
|
audio->aac_config.audio_object = AUDIO_AAC_OBJECT_LC;
|
||
|
audio->aac_config.ep_config = 0;
|
||
|
audio->aac_config.aac_section_data_resilience_flag =
|
||
|
AUDIO_AAC_SEC_DATA_RES_OFF;
|
||
|
audio->aac_config.aac_scalefactor_data_resilience_flag =
|
||
|
AUDIO_AAC_SCA_DATA_RES_OFF;
|
||
|
audio->aac_config.aac_spectral_data_resilience_flag =
|
||
|
AUDIO_AAC_SPEC_DATA_RES_OFF;
|
||
|
audio->aac_config.sbr_on_flag = AUDIO_AAC_SBR_ON_FLAG_ON;
|
||
|
audio->aac_config.sbr_ps_on_flag = AUDIO_AAC_SBR_PS_ON_FLAG_ON;
|
||
|
audio->aac_config.dual_mono_mode = AUDIO_AAC_DUAL_MONO_PL_SR;
|
||
|
audio->aac_config.channel_configuration = 2;
|
||
|
audio->dec_id = 0;
|
||
|
|
||
|
audio->out[0].data = audio->data + 0;
|
||
|
audio->out[0].addr = audio->phys + 0;
|
||
|
audio->out[0].size = BUFSZ;
|
||
|
|
||
|
audio->out[1].data = audio->data + BUFSZ;
|
||
|
audio->out[1].addr = audio->phys + BUFSZ;
|
||
|
audio->out[1].size = BUFSZ;
|
||
|
|
||
|
audio->volume = 0x2000; /* Q13 1.0 */
|
||
|
|
||
|
audio_flush(audio);
|
||
|
|
||
|
file->private_data = audio;
|
||
|
audio->opened = 1;
|
||
|
rc = 0;
|
||
|
done:
|
||
|
mutex_unlock(&audio->lock);
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
static struct file_operations audio_aac_fops = {
|
||
|
.owner = THIS_MODULE,
|
||
|
.open = audio_open,
|
||
|
.release = audio_release,
|
||
|
.read = audio_read,
|
||
|
.write = audio_write,
|
||
|
.unlocked_ioctl = audio_ioctl,
|
||
|
};
|
||
|
|
||
|
struct miscdevice audio_aac_misc = {
|
||
|
.minor = MISC_DYNAMIC_MINOR,
|
||
|
.name = "msm_aac",
|
||
|
.fops = &audio_aac_fops,
|
||
|
};
|
||
|
|
||
|
static int __init audio_init(void)
|
||
|
{
|
||
|
mutex_init(&the_aac_audio.lock);
|
||
|
mutex_init(&the_aac_audio.write_lock);
|
||
|
mutex_init(&the_aac_audio.read_lock);
|
||
|
spin_lock_init(&the_aac_audio.dsp_lock);
|
||
|
init_waitqueue_head(&the_aac_audio.write_wait);
|
||
|
init_waitqueue_head(&the_aac_audio.read_wait);
|
||
|
the_aac_audio.read_data = NULL;
|
||
|
return misc_register(&audio_aac_misc);
|
||
|
}
|
||
|
|
||
|
device_initcall(audio_init);
|