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