127 lines
5.7 KiB
C
127 lines
5.7 KiB
C
/****************************************************************************
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* drivers/audio/wm8776.h
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*
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* Copyright 2017 Sony Video & Sound Products Inc.
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* Author: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
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*
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* Based on drivers/audio/wm8904.h
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __DRIVERS_AUDIO_WM8776_H
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#define __DRIVERS_AUDIO_WM8776_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <pthread.h>
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#include <mqueue.h>
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#include <nuttx/wqueue.h>
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#include <nuttx/fs/ioctl.h>
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#ifdef CONFIG_AUDIO
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define WM8776_MASTER_ATT 0x02
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#define WM8776_DAC_CC 0x07
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#define WM8776_DAC_IF 0x0a
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#define WM8776_MASTER_MODE 0x0c
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#define WM8776_PWR_DOWN 0x0d
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#define WM8776_SOFT_RESET 0x17
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#define WM8776_DEFAULT_SAMPRATE 44100 /* Initial sample rate */
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#define WM8776_DEFAULT_NCHANNELS 2 /* Initial number of channels */
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#define WM8776_DEFAULT_BPSAMP 16 /* Initial bits per sample */
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#define WM8776_HPLZCEN (0x1 << 7)
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#define WM8776_UPDATE (0x1 << 8)
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#define WM8776_HPOUT_VOL_SHIFT (0) /* Bits 0-6: Headphone output volume */
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#define WM8776_HPOUT_VOL_MASK (0x7f << WM8776_HPOUT_VOL_SHIFT)
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# define WM8776_HPOUT_VOL(n) ((uint16_t)(n) << WM8776_HPOUT_VOL_SHIFT)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct wm8776_dev_s
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{
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/* We are an audio lower half driver (We are also the upper "half" of
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* the WM8776 driver with respect to the board lower half driver).
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*
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* Terminology: Our "lower" half audio instances will be called dev for the
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* publicly visible version and "priv" for the version that only this driver
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* knows. From the point of view of this driver, it is the board lower
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* "half" that is referred to as "lower".
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*/
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struct audio_lowerhalf_s dev; /* WM8776 audio lower half (this device) */
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const FAR struct wm8776_lower_s *lower; /* Pointer to the board lower functions */
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FAR struct i2c_master_s *i2c; /* I2C driver to use */
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FAR struct i2s_dev_s *i2s; /* I2S driver to use */
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struct dq_queue_s pendq; /* Queue of pending buffers to be sent */
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struct dq_queue_s doneq; /* Queue of sent buffers to be returned */
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mqd_t mq; /* Message queue for receiving messages */
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char mqname[16]; /* Our message queue name */
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pthread_t threadid; /* ID of our thread */
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uint32_t bitrate; /* Actual programmed bit rate */
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sem_t pendsem; /* Protect pendq */
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uint16_t samprate; /* Configured samprate (samples/sec) */
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#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
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#ifndef CONFIG_AUDIO_EXCLUDE_BALANCE
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uint16_t balance; /* Current balance level (b16) */
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#endif /* CONFIG_AUDIO_EXCLUDE_BALANCE */
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uint8_t volume; /* Current volume level {0..63} */
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#endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */
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uint8_t nchannels; /* Number of channels (1 or 2) */
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uint8_t bpsamp; /* Bits per sample (8 or 16) */
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volatile uint8_t inflight; /* Number of audio buffers in-flight */
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bool running; /* True: Worker thread is running */
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bool paused; /* True: Playing is paused */
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bool mute; /* True: Output is muted */
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#ifndef CONFIG_AUDIO_EXCLUDE_STOP
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bool terminating; /* True: Stop requested */
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#endif
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bool reserved; /* True: Device is reserved */
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volatile int result; /* The result of the last transfer */
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};
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#endif /* CONFIG_AUDIO */
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#endif /* __DRIVERS_AUDIO_WM8776_H */
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