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/*
* arch/ubicom32/include/asm/pcm_tio.h
* Ubicom32 architecture PCM TIO definitions.
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port 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.
*
* The Ubicom32 Linux Kernel Port is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*/
#ifndef _ASM_UBICOM32_PCM_TIO_H
#define _ASM_UBICOM32_PCM_TIO_H
#include <asm/devtree.h>
#define PCM_TIO_REGS_VERSION 2
struct pcm_tio_regs {
/*
* set this value to 1 to reload the parameters and restart the HRT
*/
u32_t reload;
/*
* Pointers to the input and output buffers
*/
void *input_buf;
void *output_buf;
/*
* Buffer size (see pcm_hrt.S for constraints)
*/
u32_t buffer_size;
/*
* Current cycle. This variable increases every time half the buffer
* is consumed.
*/
u32_t cycle;
/*
* Fields below this line are not accessed by the HRT. They are purely
* informational for the user of this TIO.
*/
/*
* Version of this structure
*/
u32_t version;
/*
* Number of channels supported
*/
u32_t channels;
/*
* Maximum buffer size
*/
u32_t max_buffer_size;
};
/*
* Our device node
*/
#define PCM_TIO_NODE_VERSION 1
struct pcm_tio_node {
struct devtree_node dn;
u32_t version;
struct pcm_tio_regs *regs;
};
#endif
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