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120 lines
3.6 KiB
120 lines
3.6 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* cmt-speech interface definitions |
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* |
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* Copyright (C) 2008,2009,2010 Nokia Corporation. All rights reserved. |
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* |
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* Contact: Kai Vehmanen <[email protected]> |
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* Original author: Peter Ujfalusi <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* version 2 as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
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* 02110-1301 USA |
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*/ |
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#ifndef _CS_PROTOCOL_H |
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#define _CS_PROTOCOL_H |
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#include <linux/types.h> |
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#include <linux/ioctl.h> |
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/* chardev parameters */ |
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#define CS_DEV_FILE_NAME "/dev/cmt_speech" |
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/* user-space API versioning */ |
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#define CS_IF_VERSION 2 |
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/* APE kernel <-> user space messages */ |
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#define CS_CMD_SHIFT 28 |
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#define CS_DOMAIN_SHIFT 24 |
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#define CS_CMD_MASK 0xff000000 |
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#define CS_PARAM_MASK 0xffffff |
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#define CS_CMD(id, dom) \ |
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(((id) << CS_CMD_SHIFT) | ((dom) << CS_DOMAIN_SHIFT)) |
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#define CS_ERROR CS_CMD(1, 0) |
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#define CS_RX_DATA_RECEIVED CS_CMD(2, 0) |
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#define CS_TX_DATA_READY CS_CMD(3, 0) |
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#define CS_TX_DATA_SENT CS_CMD(4, 0) |
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/* params to CS_ERROR indication */ |
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#define CS_ERR_PEER_RESET 0 |
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/* ioctl interface */ |
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/* parameters to CS_CONFIG_BUFS ioctl */ |
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#define CS_FEAT_TSTAMP_RX_CTRL (1 << 0) |
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#define CS_FEAT_ROLLING_RX_COUNTER (2 << 0) |
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/* parameters to CS_GET_STATE ioctl */ |
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#define CS_STATE_CLOSED 0 |
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#define CS_STATE_OPENED 1 /* resource allocated */ |
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#define CS_STATE_CONFIGURED 2 /* data path active */ |
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/* maximum number of TX/RX buffers */ |
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#define CS_MAX_BUFFERS_SHIFT 4 |
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#define CS_MAX_BUFFERS (1 << CS_MAX_BUFFERS_SHIFT) |
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/* Parameters for setting up the data buffers */ |
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struct cs_buffer_config { |
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__u32 rx_bufs; /* number of RX buffer slots */ |
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__u32 tx_bufs; /* number of TX buffer slots */ |
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__u32 buf_size; /* bytes */ |
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__u32 flags; /* see CS_FEAT_* */ |
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__u32 reserved[4]; |
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}; |
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/* |
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* struct for monotonic timestamp taken when the |
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* last control command was received |
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*/ |
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struct cs_timestamp { |
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__u32 tv_sec; /* seconds */ |
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__u32 tv_nsec; /* nanoseconds */ |
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}; |
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/* |
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* Struct describing the layout and contents of the driver mmap area. |
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* This information is meant as read-only information for the application. |
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*/ |
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struct cs_mmap_config_block { |
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__u32 reserved1; |
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__u32 buf_size; /* 0=disabled, otherwise the transfer size */ |
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__u32 rx_bufs; /* # of RX buffers */ |
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__u32 tx_bufs; /* # of TX buffers */ |
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__u32 reserved2; |
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/* array of offsets within the mmap area for each RX and TX buffer */ |
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__u32 rx_offsets[CS_MAX_BUFFERS]; |
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__u32 tx_offsets[CS_MAX_BUFFERS]; |
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__u32 rx_ptr; |
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__u32 rx_ptr_boundary; |
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__u32 reserved3[2]; |
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/* enabled with CS_FEAT_TSTAMP_RX_CTRL */ |
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struct cs_timestamp tstamp_rx_ctrl; |
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}; |
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#define CS_IO_MAGIC 'C' |
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#define CS_IOW(num, dtype) _IOW(CS_IO_MAGIC, num, dtype) |
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#define CS_IOR(num, dtype) _IOR(CS_IO_MAGIC, num, dtype) |
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#define CS_IOWR(num, dtype) _IOWR(CS_IO_MAGIC, num, dtype) |
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#define CS_IO(num) _IO(CS_IO_MAGIC, num) |
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#define CS_GET_STATE CS_IOR(21, unsigned int) |
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#define CS_SET_WAKELINE CS_IOW(23, unsigned int) |
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#define CS_GET_IF_VERSION CS_IOR(30, unsigned int) |
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#define CS_CONFIG_BUFS CS_IOW(31, struct cs_buffer_config) |
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#endif /* _CS_PROTOCOL_H */
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