60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/* sound/soc/at32/at32-ssc.h
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* ASoC SSC interface for Atmel AT32 SoC
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*
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* Copyright (C) 2008 Long Range Systems
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* Geoffrey Wossum <gwossum@acm.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __SOUND_SOC_AT32_AT32_SSC_H
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#define __SOUND_SOC_AT32_AT32_SSC_H __FILE__
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#include <linux/types.h>
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#include <linux/atmel-ssc.h>
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#include "at32-pcm.h"
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struct at32_ssc_state {
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u32 ssc_cmr;
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u32 ssc_rcmr;
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u32 ssc_rfmr;
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u32 ssc_tcmr;
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u32 ssc_tfmr;
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u32 ssc_sr;
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u32 ssc_imr;
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};
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struct at32_ssc_info {
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char *name;
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struct ssc_device *ssc;
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spinlock_t lock; /* lock for dir_mask */
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unsigned short dir_mask; /* 0=unused, 1=playback, 2=capture */
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unsigned short initialized; /* true if SSC has been initialized */
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unsigned short daifmt;
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unsigned short cmr_div;
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unsigned short tcmr_period;
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unsigned short rcmr_period;
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struct at32_pcm_dma_params *dma_params[2];
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struct at32_ssc_state ssc_state;
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};
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/* SSC divider ids */
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#define AT32_SSC_CMR_DIV 0 /* MCK divider for BCLK */
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#define AT32_SSC_TCMR_PERIOD 1 /* BCLK divider for transmit FS */
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#define AT32_SSC_RCMR_PERIOD 2 /* BCLK divider for receive FS */
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extern struct snd_soc_dai at32_ssc_dai[];
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#endif /* __SOUND_SOC_AT32_AT32_SSC_H */
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