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149 lines
7.1 KiB
C
149 lines
7.1 KiB
C
/* sdiaudio.h
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*
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* Shared header file for the Linux user-space API for
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* Linear Systems Ltd. SMPTE 292M and SMPTE 259M-C Audio interface boards.
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*
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* Copyright (C) 2009 Linear Systems Ltd.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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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 the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of Linear Systems Ltd. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY LINEAR SYSTEMS LTD. "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL LINEAR SYSTEMS LTD. OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Linear Systems can be contacted at <http://www.linsys.ca/>.
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*
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*/
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#ifndef _SDIAUDIO_H
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#define _SDIAUDIO_H
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/* Driver info */
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#define SDIAUDIO_DRIVER_NAME "sdiaudio"
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#define SDIAUDIO_MAJOR 0 /* Set to 0 for dynamic allocation.
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* See /usr/src/linux/Documentation/devices.txt */
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#define SDIAUDIO_TX_BUFFERS_MIN 2 /* This must be at least 2 */
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/* The minimum transmit buffer size must be positive, divisible by 4,
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* and large enough that the buffers aren't transferred to the onboard FIFOs
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* too quickly for the machine to handle the interrupts.
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* This is especially a problem at startup, when the FIFOs are empty.
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* Relevant factors include onboard FIFO size, PCI bus throughput,
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* processor speed, and interrupt latency. */
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#define SDIAUDIO_TX_BUFSIZE_MIN 1024
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#define SDIAUDIO_RX_BUFFERS_MIN 2 /* This must be at least 2 */
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#define SDIAUDIO_RX_BUFSIZE_MIN 8 /* This must be positive and divisible by 4 */
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#define SDIAUDIO_TX_BUFFERS 30 /* This must be at least 2 */
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#define SDIAUDIO_TX_BUFSIZE 6400 /* This must be positive and divisible by 4 */
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#define SDIAUDIO_RX_BUFFERS 30 /* This must be at least 2 */
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#define SDIAUDIO_RX_BUFSIZE 6400 /* This must be positive and divisible by 4 */
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/* Ioctl () definitions */
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#define SDIAUDIO_IOC_MAGIC '~' /* This ioctl magic number is currently free. See
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* /usr/src/linux/Documentation/ioctl-number.txt */
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#define SDIAUDIO_IOC_TXGETCAP _IOR(SDIAUDIO_IOC_MAGIC, 1, unsigned int)
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#define SDIAUDIO_IOC_TXGETEVENTS _IOR(SDIAUDIO_IOC_MAGIC, 2, unsigned int)
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#define SDIAUDIO_IOC_TXGETBUFLEVEL _IOR(SDIAUDIO_IOC_MAGIC, 3, unsigned int)
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#define SDIAUDIO_IOC_TXGETTXD _IOR(SDIAUDIO_IOC_MAGIC, 4, int)
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#define SDIAUDIO_IOC_RXGETCAP _IOR(SDIAUDIO_IOC_MAGIC, 65, unsigned int)
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#define SDIAUDIO_IOC_RXGETEVENTS _IOR(SDIAUDIO_IOC_MAGIC, 66, unsigned int)
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#define SDIAUDIO_IOC_RXGETBUFLEVEL _IOR(SDIAUDIO_IOC_MAGIC, 67, unsigned int)
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#define SDIAUDIO_IOC_RXGETCARRIER _IOR(SDIAUDIO_IOC_MAGIC, 68, int)
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#define SDIAUDIO_IOC_RXGETSTATUS _IOR(SDIAUDIO_IOC_MAGIC, 69, int)
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#define SDIAUDIO_IOC_RXGETAUDIOGR0ERROR _IOR(SDIAUDIO_IOC_MAGIC, 70, unsigned int)
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#define SDIAUDIO_IOC_RXGETAUDIOGR0DELAYA _IOR(SDIAUDIO_IOC_MAGIC, 71, unsigned int)
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#define SDIAUDIO_IOC_RXGETAUDIOGR0DELAYB _IOR(SDIAUDIO_IOC_MAGIC, 72, unsigned int)
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#define SDIAUDIO_IOC_RXGETNONAUDIO _IOR(SDIAUDIO_IOC_MAGIC, 73, unsigned int)
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#define SDIAUDIO_IOC_RXGETAUDSTAT _IOR(SDIAUDIO_IOC_MAGIC, 74, unsigned int)
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#define SDIAUDIO_IOC_RXGETAUDRATE _IOR(SDIAUDIO_IOC_MAGIC, 75, unsigned int)
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#define SDIAUDIO_IOC_GETID _IOR(SDIAUDIO_IOC_MAGIC, 129, unsigned int)
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#define SDIAUDIO_IOC_GETVERSION _IOR(SDIAUDIO_IOC_MAGIC, 130, unsigned int)
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#define SDIAUDIO_IOC_QBUF _IOW(SDIAUDIO_IOC_MAGIC, 131, unsigned int)
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#define SDIAUDIO_IOC_DQBUF _IOW(SDIAUDIO_IOC_MAGIC, 132, unsigned int)
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/* Transmitter event flag bit locations */
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#define SDIAUDIO_EVENT_TX_BUFFER_ORDER 0
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#define SDIAUDIO_EVENT_TX_BUFFER (1 << SDIAUDIO_EVENT_TX_BUFFER_ORDER)
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#define SDIAUDIO_EVENT_TX_FIFO_ORDER 1
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#define SDIAUDIO_EVENT_TX_FIFO (1 << SDIAUDIO_EVENT_TX_FIFO_ORDER)
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#define SDIAUDIO_EVENT_TX_DATA_ORDER 2
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#define SDIAUDIO_EVENT_TX_DATA (1 << SDIAUDIO_EVENT_TX_DATA_ORDER)
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/* Receiver event flag bit locations */
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#define SDIAUDIO_EVENT_RX_BUFFER_ORDER 0
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#define SDIAUDIO_EVENT_RX_BUFFER (1 << SDIAUDIO_EVENT_RX_BUFFER_ORDER)
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#define SDIAUDIO_EVENT_RX_FIFO_ORDER 1
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#define SDIAUDIO_EVENT_RX_FIFO (1 << SDIAUDIO_EVENT_RX_FIFO_ORDER)
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#define SDIAUDIO_EVENT_RX_CARRIER_ORDER 2
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#define SDIAUDIO_EVENT_RX_CARRIER (1 << SDIAUDIO_EVENT_RX_CARRIER_ORDER)
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#define SDIAUDIO_EVENT_RX_DATA_ORDER 3
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#define SDIAUDIO_EVENT_RX_DATA (1 << SDIAUDIO_EVENT_RX_DATA_ORDER)
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/* Interface capabilities */
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#define SDIAUDIO_CAP_RX_CD 0x00000001
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#define SDIAUDIO_CAP_RX_DATA 0x00000002
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#define SDIAUDIO_CAP_RX_STATS 0x00000004
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#define SDIAUDIO_CAP_RX_NONAUDIO 0x00000008
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#define SDIAUDIO_CAP_RX_24BIT 0x00000010
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/* Audio sample size */
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#define SDIAUDIO_CTL_AUDSAMP_SZ_16 16 /* 16 bit */
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#define SDIAUDIO_CTL_AUDSAMP_SZ_24 24 /* 24 bit */
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#define SDIAUDIO_CTL_AUDSAMP_SZ_32 32 /* 32 bit */
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/* Audio channel enable */
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#define SDIAUDIO_CTL_AUDCH_EN_0 0 /* 0 channel/disable audio */
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#define SDIAUDIO_CTL_AUDCH_EN_2 2 /* 2 channel */
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#define SDIAUDIO_CTL_AUDCH_EN_4 4 /* 4 channel */
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#define SDIAUDIO_CTL_AUDCH_EN_6 6 /* 6 channel */
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#define SDIAUDIO_CTL_AUDCH_EN_8 8 /* 8 channel */
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#define SDIAUDIO_CTL_PCM_ALLCHANNEL 0x00000000 /* PCM for channel 1 - 8 */
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#define SDIAUDIO_CTL_NONAUDIO_ALLCHANNEL 0x000000ff /* No audio for channel 1 - 8 */
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/* Active audio channels status */
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#define SDIAUDIO_CTL_ACT_CHAN_0 0x00 /* no audio control packets */
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#define SDIAUDIO_CTL_ACT_CHAN_2 0x03 /* 2 channels */
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#define SDIAUDIO_CTL_ACT_CHAN_4 0x0f /* 4 channels */
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#define SDIAUDIO_CTL_ACT_CHAN_6 0x3f /* 6 channels */
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#define SDIAUDIO_CTL_ACT_CHAN_8 0xff /* 8 channels */
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/* Audio rate */
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#define SDIAUDIO_CTL_SYNC_48_KHZ 0 /* Synchronous, 48 kHz */
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#define SDIAUDIO_CTL_SYNC_44_1_KHZ 2 /* Synchronous, 44.1 kHz */
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#define SDIAUDIO_CTL_SYNC_32_KHZ 4 /* Synchronous, 32 kHz */
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#define SDIAUDIO_CTL_SYNC_96_KHZ 8 /* Synchronous, 96 kHz */
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#define SDIAUDIO_CTL_SYNC_FREE_RUNNING 14 /* Synchronous, free running */
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#define SDIAUDIO_CTL_ASYNC_48_KHZ 1 /* Asynchronous, 48 kHz */
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#define SDIAUDIO_CTL_ASYNC_44_1_KHZ 3 /* Asynchronous, 44.1 kHz */
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#define SDIAUDIO_CTL_ASYNC_32_KHZ 5 /* Asynchronous, 32 kHz */
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#define SDIAUDIO_CTL_ASYNC_96_KHZ 9 /* Asynchronous, 96 kHz */
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#define SDIAUDIO_CTL_ASYNC_FREE_RUNNING 15 /* Asynchronous, free running */
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#endif
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