nuttx/drivers/audio/wm8776.h
ligd f63db66382 mqueue: add file_mq_xx for kernel use
Change-Id: Ida12f5938388cca2f233a4cde90277a218033645
Signed-off-by: ligd <liguiding1@xiaomi.com>
2021-01-05 02:40:43 -06:00

111 lines
4.9 KiB
C

/****************************************************************************
* drivers/audio/wm8776.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __DRIVERS_AUDIO_WM8776_H
#define __DRIVERS_AUDIO_WM8776_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <pthread.h>
#include <nuttx/mqueue.h>
#include <nuttx/wqueue.h>
#include <nuttx/fs/ioctl.h>
#ifdef CONFIG_AUDIO
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define WM8776_MASTER_ATT 0x02
#define WM8776_DAC_CC 0x07
#define WM8776_DAC_IF 0x0a
#define WM8776_MASTER_MODE 0x0c
#define WM8776_PWR_DOWN 0x0d
#define WM8776_SOFT_RESET 0x17
#define WM8776_DEFAULT_SAMPRATE 44100 /* Initial sample rate */
#define WM8776_DEFAULT_NCHANNELS 2 /* Initial number of channels */
#define WM8776_DEFAULT_BPSAMP 16 /* Initial bits per sample */
#define WM8776_HPLZCEN (0x1 << 7)
#define WM8776_UPDATE (0x1 << 8)
#define WM8776_HPOUT_VOL_SHIFT (0) /* Bits 0-6: Headphone output volume */
#define WM8776_HPOUT_VOL_MASK (0x7f << WM8776_HPOUT_VOL_SHIFT)
# define WM8776_HPOUT_VOL(n) ((uint16_t)(n) << WM8776_HPOUT_VOL_SHIFT)
/****************************************************************************
* Public Types
****************************************************************************/
struct wm8776_dev_s
{
/* We are an audio lower half driver (We are also the upper "half" of
* the WM8776 driver with respect to the board lower half driver).
*
* Terminology:
* Our "lower" half audio instances will be called dev for the publicly
* visible version and "priv" for the version that only this driver knows
* From the point of view of this driver, it is the board lower "half"
* that is referred to as "lower".
*/
struct audio_lowerhalf_s dev; /* WM8776 audio lower half (this device) */
const FAR struct wm8776_lower_s *lower; /* Pointer to the board lower functions */
FAR struct i2c_master_s *i2c; /* I2C driver to use */
FAR struct i2s_dev_s *i2s; /* I2S driver to use */
struct dq_queue_s pendq; /* Queue of pending buffers to be sent */
struct dq_queue_s doneq; /* Queue of sent buffers to be returned */
struct file mq; /* Message queue for receiving messages */
char mqname[16]; /* Our message queue name */
pthread_t threadid; /* ID of our thread */
uint32_t bitrate; /* Actual programmed bit rate */
sem_t pendsem; /* Protect pendq */
uint16_t samprate; /* Configured samprate (samples/sec) */
#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
#ifndef CONFIG_AUDIO_EXCLUDE_BALANCE
uint16_t balance; /* Current balance level (b16) */
#endif /* CONFIG_AUDIO_EXCLUDE_BALANCE */
uint8_t volume; /* Current volume level {0..63} */
#endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */
uint8_t nchannels; /* Number of channels (1 or 2) */
uint8_t bpsamp; /* Bits per sample (8 or 16) */
volatile uint8_t inflight; /* Number of audio buffers in-flight */
bool running; /* True: Worker thread is running */
bool paused; /* True: Playing is paused */
bool mute; /* True: Output is muted */
#ifndef CONFIG_AUDIO_EXCLUDE_STOP
bool terminating; /* True: Stop requested */
#endif
bool reserved; /* True: Device is reserved */
volatile int result; /* The result of the last transfer */
};
#endif /* CONFIG_AUDIO */
#endif /* __DRIVERS_AUDIO_WM8776_H */