+++ /dev/null
-/*
- * linux/sound/oss/omap-audio.h
- *
- * Common audio handling for the OMAP processors
- *
- * Copyright (C) 2004 Texas Instruments, Inc.
- *
- * Copyright (C) 2000, 2001 Nicolas Pitre <nico@cam.org>
- *
- * This package is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * History
- * -------
- * 2004/08/12 Nishanth Menon - Modified to integrate Audio requirements on 1610,1710 platforms
- *
- * 2004/04/04 Nishanth menon - Added hooks for power management
- *
- * 2005/12/10 Dirk Behme - Added L/R Channel Interchange fix as proposed by Ajaya Babu
- */
-
-#ifndef __OMAP_AUDIO_H
-#define __OMAP_AUDIO_H
-
-/* Requires dma.h */
-#include <mach/dma.h>
-
-/*
- * Buffer Management
- */
-typedef struct {
- int offset; /* current offset */
- char *data; /* points to actual buffer */
- dma_addr_t dma_addr; /* physical buffer address */
- int dma_ref; /* DMA refcount */
- int master; /* owner for buffer allocation, contain size when true */
-} audio_buf_t;
-
-/*
- * Structure describing the data stream related information
- */
-typedef struct {
- char *id; /* identification string */
- audio_buf_t *buffers; /* pointer to audio buffer structures */
- u_int usr_head; /* user fragment index */
- u_int dma_head; /* DMA fragment index to go */
- u_int dma_tail; /* DMA fragment index to complete */
- u_int fragsize; /* fragment i.e. buffer size */
- u_int nbfrags; /* nbr of fragments i.e. buffers */
- u_int pending_frags; /* Fragments sent to DMA */
- int dma_dev; /* device identifier for DMA */
-
-#ifdef OMAP_DMA_CHAINING_SUPPORT
- lch_chain *dma_chain;
- dma_regs_t *dma_regs; /* points to our DMA registers */
-#else
- 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 */
- char in_use; /* Is this is use? */
- int *lch; /* Chain of channels this stream is linked to */
-#endif
- int input_or_output; /* Direction of this data stream */
- int bytecount; /* nbr of processed bytes */
- int fragcount; /* nbr of fragment transitions */
- struct completion wfc; /* wait for "nbfrags" fragment completion */
- wait_queue_head_t wq; /* for poll */
- int dma_spinref; /* DMA is spinning */
- unsigned mapped:1; /* mmap()'ed buffers */
- unsigned active:1; /* actually in progress */
- unsigned stopped:1; /* might be active but stopped */
- unsigned spin_idle:1; /* have DMA spin on zeros when idle */
- unsigned linked:1; /* dma channels linked */
- int (*hw_start)(void); /* interface to start HW interface, e.g. McBSP */
- int (*hw_stop)(void); /* interface to stop HW interface, e.g. McBSP */
-} audio_stream_t;
-
-/*
- * State structure for one instance
- */
-typedef struct {
- struct module *owner; /* Codec module ID */
- audio_stream_t *output_stream;
- audio_stream_t *input_stream;
- unsigned rd_ref:1; /* open reference for recording */
- unsigned wr_ref:1; /* open reference for playback */
- unsigned need_tx_for_rx:1; /* if data must be sent while receiving */
- void *data;
- void (*hw_init) (void *);
- void (*hw_shutdown) (void *);
- int (*client_ioctl) (struct inode *, struct file *, uint, ulong);
- int (*hw_probe) (void);
- void (*hw_remove) (void);
- void (*hw_cleanup) (void);
- int (*hw_suspend) (void);
- int (*hw_resume) (void);
- struct pm_dev *pm_dev;
- struct mutex mutex; /* to protect against races in attach() */
-} audio_state_t;
-
-#ifdef AUDIO_PM
-void audio_ldm_suspend(void *data);
-
-void audio_ldm_resume(void *data);
-
-#endif
-
-/* Register a Codec using this function */
-extern int audio_register_codec(audio_state_t * codec_state);
-/* Un-Register a Codec using this function */
-extern int audio_unregister_codec(audio_state_t * codec_state);
-/* Function to provide fops of omap audio driver */
-extern struct file_operations *audio_get_fops(void);
-/* Function to initialize the device info for audio driver */
-extern int audio_dev_init(void);
-/* Function to un-initialize the device info for audio driver */
-void audio_dev_uninit(void);
-
-#endif /* End of #ifndef __OMAP_AUDIO_H */
projects / linux-2.6-omap-h63xx.git / blobdiff