a557d960dd
There is race condition around private data used in put() and get() of few mixer ctls with close() callback. Added global mutex lock and code changes to protect such critical section by accessing such lock. Change-Id: Ic160b0c7c29d0ea5d517b3bacc53828d8d61e085 Signed-off-by: Ajit Pandey <ajitp@codeaurora.org>
129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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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) 2012-2017, 2019 The Linux Foundation. All rights reserved.
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*/
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#ifndef _MSM_PCM_H
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#define _MSM_PCM_H
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#include <dsp/apr_audio-v2.h>
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#include <dsp/q6asm-v2.h>
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#include "msm-pcm-routing-v2.h"
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/* Support unconventional sample rates 12000, 24000 as well */
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#define USE_RATE \
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(SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_KNOT)
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extern int copy_count;
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struct buffer {
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void *data;
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unsigned int size;
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unsigned int used;
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unsigned int addr;
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};
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struct buffer_rec {
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void *data;
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unsigned int size;
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unsigned int read;
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unsigned int addr;
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};
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struct audio_locks {
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spinlock_t event_lock;
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wait_queue_head_t read_wait;
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wait_queue_head_t write_wait;
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wait_queue_head_t eos_wait;
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wait_queue_head_t enable_wait;
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wait_queue_head_t flush_wait;
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};
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struct msm_audio_in_frame_info {
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uint32_t size;
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uint32_t offset;
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};
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#define PLAYBACK_MIN_NUM_PERIODS 2
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#define PLAYBACK_MAX_NUM_PERIODS 8
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#define PLAYBACK_MAX_PERIOD_SIZE 122880
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#define PLAYBACK_MIN_PERIOD_SIZE 128
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#define CAPTURE_MIN_NUM_PERIODS 2
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#define CAPTURE_MAX_NUM_PERIODS 8
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#define CAPTURE_MAX_PERIOD_SIZE 122880
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#define CAPTURE_MIN_PERIOD_SIZE 320
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struct msm_audio {
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struct snd_pcm_substream *substream;
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unsigned int pcm_size;
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unsigned int pcm_count;
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unsigned int pcm_irq_pos; /* IRQ position */
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uint16_t source; /* Encoding source bit mask */
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struct audio_client *audio_client;
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uint16_t session_id;
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uint32_t samp_rate;
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uint32_t channel_mode;
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uint32_t dsp_cnt;
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int abort; /* set when error, like sample rate mismatch */
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bool reset_event;
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int enabled;
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int close_ack;
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int cmd_ack;
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/*
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* cmd_ack doesn't tell if paticular command has been sent so can't
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* determine if it needs to wait for completion.
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* Use cmd_pending instead when checking whether a command is been
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* sent or not.
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*/
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unsigned long cmd_pending;
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atomic_t start;
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atomic_t stop;
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atomic_t out_count;
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atomic_t in_count;
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atomic_t out_needed;
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atomic_t eos;
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int out_head;
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int periods;
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int mmap_flag;
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atomic_t pending_buffer;
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bool set_channel_map;
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char channel_map[PCM_FORMAT_MAX_NUM_CHANNEL_V8];
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int cmd_interrupt;
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bool meta_data_mode;
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uint32_t volume;
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bool compress_enable;
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/* array of frame info */
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struct msm_audio_in_frame_info in_frame_info[CAPTURE_MAX_NUM_PERIODS];
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};
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struct output_meta_data_st {
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uint32_t meta_data_length;
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uint32_t frame_size;
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uint32_t timestamp_lsw;
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uint32_t timestamp_msw;
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uint32_t reserved[12];
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};
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struct msm_plat_data {
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int perf_mode;
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struct snd_pcm *pcm;
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struct msm_pcm_ch_map *ch_map[MSM_FRONTEND_DAI_MAX];
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struct snd_pcm *pcm_device[MSM_FRONTEND_DAI_MM_SIZE];
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struct msm_pcm_channel_mixer *chmixer_pspd[MSM_FRONTEND_DAI_MM_SIZE][2];
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struct mutex lock;
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};
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struct msm_pcm_ch_map {
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bool set_ch_map;
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char channel_map[PCM_FORMAT_MAX_NUM_CHANNEL];
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};
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#endif /*_MSM_PCM_H*/
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