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