d807a231a2
This driver actually works slightly better on -stable than on -current (the system locks on detach on -current), so it should be MFC'd somewhat sooner. This driver currently points out a difficulty in the sound device framework. The PCM unregister routine is allowed to refuse the detach if the device is in use. In the case of a USB device, however, this unregistration is much more mandatory in nature, since the device is *actually* gone when this call is made. The sound subsystem really should not refuse an unregistration and should take its own steps to reject further I/O. As a result, if you detach a USB sound device while it is in use, you can expect a panic shortly thereafter. This device cannot currently record audio. Some routines are unwritten as of yet in uaudio.c to support recording. This device hangs my -current box on detach. I don't know why. This does not happen on my -stable machine. Obtained from: Hiroyuki Aizu MFC after: 2 weeks
50 lines
2.2 KiB
C
50 lines
2.2 KiB
C
/* $FreeBSD$ */
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/*
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* Copyright (c) 2000-2002 Hiroyuki Aizu <aizu@navi.org>
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY 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 THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define NO_RECORDING /* XXX: some routines missing from uaudio.c */
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/* Defined in uaudio.c, used in uaudio_pcm,c */
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void uaudio_chan_set_param_pcm_dma_buff(device_t dev, u_char *start,
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u_char *end, struct pcm_channel *pc);
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int uaudio_trigger_output(device_t dev);
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int uaudio_halt_out_dma(device_t dev);
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#ifndef NO_RECORDING
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int uaudio_trigger_input(device_t dev);
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int uaudio_halt_in_dma(device_t dev);
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#endif
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void uaudio_chan_set_param(device_t, u_char *, u_char *);
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void uaudio_chan_set_param_blocksize(device_t dev, u_int32_t blocksize);
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void uaudio_chan_set_param_speed(device_t dev, u_int32_t speed);
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void uaudio_chan_set_param_format(device_t dev, u_int32_t format);
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int uaudio_chan_getptr(device_t dev);
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void uaudio_mixer_set(device_t dev, unsigned type, unsigned left,
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unsigned right);
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u_int32_t uaudio_query_mix_info(device_t dev);
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void uaudio_query_formats(device_t dev, u_int32_t *pfmt, u_int32_t *rfmt);
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