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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* ioctl defines for synchronous serial port driver
*
* Copyright (c) 2001-2003 Axis Communications AB
*
* Author: Mikael Starvik
*
*/
#ifndef SYNC_SERIAL_H
#define SYNC_SERIAL_H
#include <linux/ioctl.h>
#define SSP_SPEED _IOR('S', 0, unsigned int)
#define SSP_MODE _IOR('S', 1, unsigned int)
#define SSP_FRAME_SYNC _IOR('S', 2, unsigned int)
#define SSP_IPOLARITY _IOR('S', 3, unsigned int)
#define SSP_OPOLARITY _IOR('S', 4, unsigned int)
#define SSP_SPI _IOR('S', 5, unsigned int)
#define SSP_INBUFCHUNK _IOR('S', 6, unsigned int)
#define SSP_INPUT _IOR('S', 7, unsigned int)
/* Values for SSP_SPEED */
#define SSP150 0
#define SSP300 1
#define SSP600 2
#define SSP1200 3
#define SSP2400 4
#define SSP4800 5
#define SSP9600 6
#define SSP19200 7
#define SSP28800 8
#define SSP57600 9
#define SSP115200 10
#define SSP230400 11
#define SSP460800 12
#define SSP921600 13
#define SSP3125000 14
#define CODEC 15
#define CODEC_f32768 16
#define FREQ_4MHz 0
#define FREQ_2MHz 1
#define FREQ_1MHz 2
#define FREQ_512kHz 3
#define FREQ_256kHz 4
#define FREQ_128kHz 5
#define FREQ_64kHz 6
#define FREQ_32kHz 7
/* FREQ_* with values where bit (value & 0x10) is set are */
/* used for CODEC_f32768 */
#define FREQ_4096kHz 16 /* CODEC_f32768 */
/* Used by application to set CODEC divider, word rate and frame rate */
#define CODEC_VAL(freq, clk_per_sync, sync_per_frame) \
((CODEC + ((freq & 0x10) >> 4)) | (freq << 8) | \
(clk_per_sync << 16) | (sync_per_frame << 28))
/* Used by driver to extract speed */
#define GET_SPEED(x) (x & 0xff)
#define GET_FREQ(x) ((x & 0xff00) >> 8)
#define GET_WORD_RATE(x) (((x & 0x0fff0000) >> 16) - 1)
#define GET_FRAME_RATE(x) (((x & 0xf0000000) >> 28) - 1)
/* Values for SSP_MODE */
#define MASTER_OUTPUT 0
#define SLAVE_OUTPUT 1
#define MASTER_INPUT 2
#define SLAVE_INPUT 3
#define MASTER_BIDIR 4
#define SLAVE_BIDIR 5
/* Values for SSP_FRAME_SYNC */
#define NORMAL_SYNC 1
#define EARLY_SYNC 2
#define SECOND_WORD_SYNC 0x40000
#define LATE_SYNC 0x80000
#define BIT_SYNC 4
#define WORD_SYNC 8
#define EXTENDED_SYNC 0x10
#define SYNC_OFF 0x20
#define SYNC_ON 0x40
#define WORD_SIZE_8 0x80
#define WORD_SIZE_12 0x100
#define WORD_SIZE_16 0x200
#define WORD_SIZE_24 0x400
#define WORD_SIZE_32 0x800
#define BIT_ORDER_LSB 0x1000
#define BIT_ORDER_MSB 0x2000
#define FLOW_CONTROL_ENABLE 0x4000
#define FLOW_CONTROL_DISABLE 0x8000
#define CLOCK_GATED 0x10000
#define CLOCK_NOT_GATED 0x20000
/* Values for SSP_IPOLARITY and SSP_OPOLARITY */
#define CLOCK_NORMAL 1
#define CLOCK_INVERT 2
#define CLOCK_INEGEDGE CLOCK_NORMAL
#define CLOCK_IPOSEDGE CLOCK_INVERT
#define FRAME_NORMAL 4
#define FRAME_INVERT 8
#define STATUS_NORMAL 0x10
#define STATUS_INVERT 0x20
/* Values for SSP_SPI */
#define SPI_MASTER 0
#define SPI_SLAVE 1
/* Values for SSP_INBUFCHUNK */
/* plain integer with the size of DMA chunks */
/* To ensure that the timestamps are aligned with the data being read
* the read length MUST be a multiple of the length of the DMA buffers.
*
* Use a multiple of SSP_INPUT_CHUNK_SIZE defined below.
*/
#define SSP_INPUT_CHUNK_SIZE 256
/* Request struct to pass through the ioctl interface to read
* data with timestamps.
*/
struct ssp_request {
char __user *buf; /* Where to put the data. */
size_t len; /* Size of buf. MUST be a multiple of */
/* SSP_INPUT_CHUNK_SIZE! */
struct timespec ts; /* The time the data was sampled. */
};
#endif
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