4ede028f87
This patch adds ALSA support for the AC97 controller found on Atmel AVR32 devices. Tested on ATSTK1006 + ATSTK1000 with a development board with a AC97 codec. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
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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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