path: root/sound/drivers
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authorRafael Ignacio Zurita <>2009-11-03 17:16:27 -0300
committerTakashi Iwai <>2009-11-04 09:17:40 +0100
commit9dcaa7b25f2c8f6a0485854cd3641f585a154072 (patch)
tree1f3453a235682f5ba4b4357633f3546a4dbf4e2b /sound/drivers
parentbcc2c6b7cb320d10c7fcccd87dce87f4384b4332 (diff)
ALSA: sh: add SuperH DAC audio driver for ALSA V4
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 <> Acked-by: Paul Mundt <> Signed-off-by: Takashi Iwai <>
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