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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/sound/atmel-ac97c.h
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/*

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 * Driver for the Atmel AC97C controller

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 *

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 * Copyright (C) 2005-2009 Atmel Corporation

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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_SOUND_ATMEL_AC97C_H

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#define __INCLUDE_SOUND_ATMEL_AC97C_H

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#include <linux/dw_dmac.h>

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#define AC97C_CAPTURE	0x01

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#define AC97C_PLAYBACK	0x02

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#define AC97C_BOTH	(AC97C_CAPTURE | AC97C_PLAYBACK)

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/**

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 * struct atmel_ac97c_pdata - board specific AC97C configuration

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 * @rx_dws: DMA slave interface to use for sound capture.

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 * @tx_dws: DMA slave interface to use for sound playback.

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 * @reset_pin: GPIO pin wired to the reset input on the external AC97 codec,

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 *             optional to use, set to -ENODEV if not in use. AC97 layer will

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 *             try to do a software reset of the external codec anyway.

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 * @flags: Flags for which directions should be enabled.

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 *

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 * If the user do not want to use a DMA channel for playback or capture, i.e.

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 * only one feature is required on the board. The slave for playback or capture

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 * can be set to NULL. The AC97C driver will take use of this when setting up

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 * the sound streams.

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 */

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struct ac97c_platform_data {

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	struct dw_dma_slave	rx_dws;

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	struct dw_dma_slave	tx_dws;

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	unsigned int 		flags;

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	int			reset_pin;

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};

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#endif /* __INCLUDE_SOUND_ATMEL_AC97C_H */

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