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This is a port of the sound/oss/sh_dac_audio.c driver. The driver uses an on-chip 8-bit D/A converter, which has a speaker connected to one of its channels, found in several ancient HP machines. For interrupts it uses a high-resolution timer (hrtimer). Tested on SH7709 based hp6xx (HP Jornada 680/690 and HP Palmtop 620lx/660lx). Also, since OSS Emulation works, the old OSS sound/oss/sh_dac_audio.c driver would be obsolete soon, and it could be removed. Signed-off-by: Rafael Ignacio Zurita <rizurita@yahoo.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
22 lines
587 B
C
22 lines
587 B
C
/*
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* SH_DAC specific configuration, for the dac_audio platform_device
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*
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* Copyright (C) 2009 Rafael Ignacio Zurita <rizurita@yahoo.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#ifndef __INCLUDE_SH_DAC_AUDIO_H
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#define __INCLUDE_SH_DAC_AUDIO_H
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struct dac_audio_pdata {
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int buffer_size;
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int channel;
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void (*start)(struct dac_audio_pdata *pd);
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void (*stop)(struct dac_audio_pdata *pd);
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};
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#endif /* __INCLUDE_SH_DAC_AUDIO_H */
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