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-/*
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- * arch/arm/plat-omap/include/mach/omap-alsa.h
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- *
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- * Alsa Driver for AIC23 and TSC2101 codecs on OMAP platform boards.
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- *
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- * Copyright (C) 2006 Mika Laitio <lamikr@cc.jyu.fi>
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- *
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- * Copyright (C) 2005 Instituto Nokia de Tecnologia - INdT - Manaus Brazil
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- * Written by Daniel Petrini, David Cohen, Anderson Briglia
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- * {daniel.petrini, david.cohen, anderson.briglia}@indt.org.br
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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 as published by the
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- * Free Software Foundation; either version 2 of the License, or (at your
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- * option) any later version.
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- *
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- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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- *
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- * You should have received a copy of the GNU General Public License along
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- * with this program; if not, write to the Free Software Foundation, Inc.,
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- * 675 Mass Ave, Cambridge, MA 02139, USA.
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- *
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- * History
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- * -------
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- *
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- * 2005/07/25 INdT-10LE Kernel Team - Alsa driver for omap osk,
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- * original version based in sa1100 driver
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- * and omap oss driver.
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- */
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-
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-#ifndef __OMAP_ALSA_H
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-#define __OMAP_ALSA_H
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-
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-#include <plat/dma.h>
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-#include <sound/core.h>
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-#include <sound/pcm.h>
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-#include <plat/mcbsp.h>
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-#include <linux/platform_device.h>
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-
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-#define DMA_BUF_SIZE (1024 * 8)
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-
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-/*
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- * Buffer management for alsa and dma
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- */
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-struct audio_stream {
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- char *id; /* identification string */
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- int stream_id; /* numeric identification */
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- int dma_dev; /* dma number of that device */
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- int *lch; /* Chain of channels this stream is linked to */
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- char started; /* to store if the chain was started or not */
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- int dma_q_head; /* DMA Channel Q Head */
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- int dma_q_tail; /* DMA Channel Q Tail */
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- char dma_q_count; /* DMA Channel Q Count */
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- int active:1; /* we are using this stream for transfer now */
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- int period; /* current transfer period */
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- int periods; /* current count of periods registerd in the DMA engine */
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- spinlock_t dma_lock; /* for locking in DMA operations */
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- struct snd_pcm_substream *stream; /* the pcm stream */
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- unsigned linked:1; /* dma channels linked */
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- int offset; /* store start position of the last period in the alsa buffer */
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- int (*hw_start)(void); /* interface to start HW interface, e.g. McBSP */
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- int (*hw_stop)(void); /* interface to stop HW interface, e.g. McBSP */
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-};
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-
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-/*
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- * Alsa card structure for aic23
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- */
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-struct snd_card_omap_codec {
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- struct snd_card *card;
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- struct snd_pcm *pcm;
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- long samplerate;
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- struct audio_stream s[2]; /* playback & capture */
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-};
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-
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-/* Codec specific information and function pointers.
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- * Codec (omap-alsa-aic23.c and omap-alsa-tsc2101.c)
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- * are responsible for defining the function pointers.
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- */
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-struct omap_alsa_codec_config {
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- char *name;
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- struct omap_mcbsp_reg_cfg *mcbsp_regs_alsa;
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- struct snd_pcm_hw_constraint_list *hw_constraints_rates;
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- struct snd_pcm_hardware *snd_omap_alsa_playback;
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- struct snd_pcm_hardware *snd_omap_alsa_capture;
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- void (*codec_configure_dev)(void);
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- void (*codec_set_samplerate)(long);
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- void (*codec_clock_setup)(void);
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- int (*codec_clock_on)(void);
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- int (*codec_clock_off)(void);
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- int (*get_default_samplerate)(void);
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-};
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-
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-/*********** Mixer function prototypes *************************/
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-int snd_omap_mixer(struct snd_card_omap_codec *);
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-void snd_omap_init_mixer(void);
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-
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-#ifdef CONFIG_PM
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-void snd_omap_suspend_mixer(void);
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-void snd_omap_resume_mixer(void);
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-#endif
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-
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-int snd_omap_alsa_post_probe(struct platform_device *pdev, struct omap_alsa_codec_config *config);
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-int snd_omap_alsa_remove(struct platform_device *pdev);
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-#ifdef CONFIG_PM
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-int snd_omap_alsa_suspend(struct platform_device *pdev, pm_message_t state);
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-int snd_omap_alsa_resume(struct platform_device *pdev);
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-#else
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-#define snd_omap_alsa_suspend NULL
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-#define snd_omap_alsa_resume NULL
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-#endif
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-
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-void callback_omap_alsa_sound_dma(void *);
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-
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-#endif
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