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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/sound/soc/blackfin/bf5xx-ac97.h
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/*

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 * sound/soc/blackfin/bf5xx-ac97.h

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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 _BF5XX_AC97_H

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#define _BF5XX_AC97_H

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extern struct snd_ac97_bus_ops bf5xx_ac97_ops;

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extern struct snd_ac97 *ac97;

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/* Frame format in memory, only support stereo currently */

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struct ac97_frame {

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	u16 ac97_tag;		/* slot 0 */

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	u16 ac97_addr;		/* slot 1 */

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	u16 ac97_data;		/* slot 2 */

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	u16 ac97_pcm_l;		/*slot 3:front left*/

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	u16 ac97_pcm_r;		/*slot 4:front left*/

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#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)

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	u16 ac97_mdm_l1;

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	u16 ac97_center;	/*slot 6:center*/

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	u16 ac97_sl;		/*slot 7:surround left*/

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	u16 ac97_sr;		/*slot 8:surround right*/

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	u16 ac97_lfe;		/*slot 9:lfe*/

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#endif

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} __attribute__ ((packed));

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/* Speaker location */

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#define SP_FL		0x0001

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#define SP_FR		0x0010

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#define SP_FC		0x0002

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#define SP_LFE		0x0020

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#define SP_SL		0x0004

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#define SP_SR		0x0040

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#define SP_STEREO	(SP_FL | SP_FR)

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#define SP_2DOT1	(SP_FL | SP_FR | SP_LFE)

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#define SP_QUAD		(SP_FL | SP_FR | SP_SL | SP_SR)

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#define SP_5DOT1	(SP_FL | SP_FR | SP_FC | SP_LFE | SP_SL | SP_SR)

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#define TAG_VALID		0x8000

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#define TAG_CMD			0x6000

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#define TAG_PCM_LEFT		0x1000

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#define TAG_PCM_RIGHT		0x0800

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#define TAG_PCM_MDM_L1		0x0400

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#define TAG_PCM_CENTER		0x0200

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#define TAG_PCM_SL		0x0100

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#define TAG_PCM_SR		0x0080

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#define TAG_PCM_LFE		0x0040

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void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src, \

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		size_t count, unsigned int chan_mask);

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void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \

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		size_t count);

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#endif

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