diff options
Diffstat (limited to 'include/uapi/linux/hsi/cs-protocol.h')
| -rw-r--r-- | include/uapi/linux/hsi/cs-protocol.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/include/uapi/linux/hsi/cs-protocol.h b/include/uapi/linux/hsi/cs-protocol.h new file mode 100644 index 0000000000..07c3bfb674 --- /dev/null +++ b/include/uapi/linux/hsi/cs-protocol.h @@ -0,0 +1,106 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * cmt-speech interface definitions + * + * Copyright (C) 2008,2009,2010 Nokia Corporation. All rights reserved. + * + * Contact: Kai Vehmanen <kai.vehmanen@nokia.com> + * Original author: Peter Ujfalusi <peter.ujfalusi@nokia.com> + */ + +#ifndef _CS_PROTOCOL_H +#define _CS_PROTOCOL_H + +#include <linux/types.h> +#include <linux/ioctl.h> + +/* chardev parameters */ +#define CS_DEV_FILE_NAME "/dev/cmt_speech" + +/* user-space API versioning */ +#define CS_IF_VERSION 2 + +/* APE kernel <-> user space messages */ +#define CS_CMD_SHIFT 28 +#define CS_DOMAIN_SHIFT 24 + +#define CS_CMD_MASK 0xff000000 +#define CS_PARAM_MASK 0xffffff + +#define CS_CMD(id, dom) \ + (((id) << CS_CMD_SHIFT) | ((dom) << CS_DOMAIN_SHIFT)) + +#define CS_ERROR CS_CMD(1, 0) +#define CS_RX_DATA_RECEIVED CS_CMD(2, 0) +#define CS_TX_DATA_READY CS_CMD(3, 0) +#define CS_TX_DATA_SENT CS_CMD(4, 0) + +/* params to CS_ERROR indication */ +#define CS_ERR_PEER_RESET 0 + +/* ioctl interface */ + +/* parameters to CS_CONFIG_BUFS ioctl */ +#define CS_FEAT_TSTAMP_RX_CTRL (1 << 0) +#define CS_FEAT_ROLLING_RX_COUNTER (2 << 0) + +/* parameters to CS_GET_STATE ioctl */ +#define CS_STATE_CLOSED 0 +#define CS_STATE_OPENED 1 /* resource allocated */ +#define CS_STATE_CONFIGURED 2 /* data path active */ + +/* maximum number of TX/RX buffers */ +#define CS_MAX_BUFFERS_SHIFT 4 +#define CS_MAX_BUFFERS (1 << CS_MAX_BUFFERS_SHIFT) + +/* Parameters for setting up the data buffers */ +struct cs_buffer_config { + __u32 rx_bufs; /* number of RX buffer slots */ + __u32 tx_bufs; /* number of TX buffer slots */ + __u32 buf_size; /* bytes */ + __u32 flags; /* see CS_FEAT_* */ + __u32 reserved[4]; +}; + +/* + * struct for monotonic timestamp taken when the + * last control command was received + */ +struct cs_timestamp { + __u32 tv_sec; /* seconds */ + __u32 tv_nsec; /* nanoseconds */ +}; + +/* + * Struct describing the layout and contents of the driver mmap area. + * This information is meant as read-only information for the application. + */ +struct cs_mmap_config_block { + __u32 reserved1; + __u32 buf_size; /* 0=disabled, otherwise the transfer size */ + __u32 rx_bufs; /* # of RX buffers */ + __u32 tx_bufs; /* # of TX buffers */ + __u32 reserved2; + /* array of offsets within the mmap area for each RX and TX buffer */ + __u32 rx_offsets[CS_MAX_BUFFERS]; + __u32 tx_offsets[CS_MAX_BUFFERS]; + __u32 rx_ptr; + __u32 rx_ptr_boundary; + __u32 reserved3[2]; + /* enabled with CS_FEAT_TSTAMP_RX_CTRL */ + struct cs_timestamp tstamp_rx_ctrl; +}; + +#define CS_IO_MAGIC 'C' + +#define CS_IOW(num, dtype) _IOW(CS_IO_MAGIC, num, dtype) +#define CS_IOR(num, dtype) _IOR(CS_IO_MAGIC, num, dtype) +#define CS_IOWR(num, dtype) _IOWR(CS_IO_MAGIC, num, dtype) +#define CS_IO(num) _IO(CS_IO_MAGIC, num) + +#define CS_GET_STATE CS_IOR(21, unsigned int) +#define CS_SET_WAKELINE CS_IOW(23, unsigned int) +#define CS_GET_IF_VERSION CS_IOR(30, unsigned int) +#define CS_CONFIG_BUFS CS_IOW(31, struct cs_buffer_config) + +#endif /* _CS_PROTOCOL_H */ |