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Diffstat (limited to 'sound/soc/wmt/wmt-soc.h')
-rwxr-xr-x | sound/soc/wmt/wmt-soc.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sound/soc/wmt/wmt-soc.h b/sound/soc/wmt/wmt-soc.h new file mode 100755 index 00000000..f49a2764 --- /dev/null +++ b/sound/soc/wmt/wmt-soc.h @@ -0,0 +1,53 @@ +/*++ + * linux/sound/soc/wmt/wmt-soc.h + * WonderMedia audio driver for ALSA + * + * Copyright c 2010 WonderMedia Technologies, Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * WonderMedia Technologies, Inc. + * 4F, 533, Chung-Cheng Road, Hsin-Tien, Taipei 231, R.O.C +--*/ + + +#ifndef __WMT_ASOC_H__ +#define __WMT_ASOC_H__ +#include <mach/dma.h> + +struct audio_stream_a { + char *id; /* identification string */ + int stream_id; /* numeric identification */ + dmach_t dmach; /* DMA channel number */ + struct dma_device_cfg_s dma_cfg; /* DMA device config */ + int dma_dev; /* dma number of that device */ + int dma_q_head; /* DMA Channel Q Head */ + int dma_q_tail; /* DMA Channel Q Tail */ + char dma_q_count; /* DMA Channel Q Count */ + int active:1; /* we are using this stream for transfer now */ + int period; /* current transfer period */ + int periods; /* current count of periods registerd in the DMA engine */ + spinlock_t dma_lock; /* for locking in DMA operations */ + struct snd_pcm_substream *stream; /* the pcm stream */ + unsigned linked:1; /* dma channels linked */ + int offset; /* store start position of the last period in the alsa buffer */ + snd_pcm_uframes_t last_offset; +}; + +#define NUM_LINKS 1 + +extern struct snd_soc_dai_driver wmt_i2s_dai; + + +#endif |