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/*
* Copyright (C) 2010 Ettus Research, LLC
*
* Written by Philip Balister <philip@opensdr.com>
*
* This program 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.
*/
#ifndef __USRP_E_H
#define __USRP_E_H
#include <linux/types.h>
#include <linux/ioctl.h>
struct usrp_e_ctl16 {
__u32 offset;
__u32 count;
__u16 buf[20];
};
struct usrp_e_ctl32 {
__u32 offset;
__u32 count;
__u32 buf[10];
};
// SPI interface
#define UE_SPI_TXONLY 0
#define UE_SPI_TXRX 1
// Defines for spi ctrl register
#define UE_SPI_CTRL_TXNEG (1<<10)
#define UE_SPI_CTRL_RXNEG (1<<9)
#define UE_SPI_PUSH_RISE 0
#define UE_SPI_PUSH_FALL UE_SPI_CTRL_TXNEG
#define UE_SPI_LATCH_RISE 0
#define UE_SPI_LATCH_FALL UE_SPI_CTRL_RXNEG
struct usrp_e_spi {
__u8 readback;
__u32 slave;
__u32 data;
__u32 length;
__u32 flags;
};
struct usrp_e_i2c {
__u8 addr;
__u32 len;
__u8 data[];
};
#define USRP_E_IOC_MAGIC 'u'
#define USRP_E_WRITE_CTL16 _IOW(USRP_E_IOC_MAGIC, 0x20, struct usrp_e_ctl16)
#define USRP_E_READ_CTL16 _IOWR(USRP_E_IOC_MAGIC, 0x21, struct usrp_e_ctl16)
#define USRP_E_WRITE_CTL32 _IOW(USRP_E_IOC_MAGIC, 0x22, struct usrp_e_ctl32)
#define USRP_E_READ_CTL32 _IOWR(USRP_E_IOC_MAGIC, 0x23, struct usrp_e_ctl32)
#define USRP_E_SPI _IOWR(USRP_E_IOC_MAGIC, 0x24, struct usrp_e_spi)
#define USRP_E_I2C_READ _IOWR(USRP_E_IOC_MAGIC, 0x25, struct usrp_e_i2c)
#define USRP_E_I2C_WRITE _IOW(USRP_E_IOC_MAGIC, 0x26, struct usrp_e_i2c)
// Data transfer frame definition
struct usrp_transfer_frame {
__u32 flags;
__u32 len;
__u8 buf[];
};
// Flag defines
#define RB_USER (1 << 0)
#define RB_KERNEL (1 << 1)
#define RB_OVERRUN (1 << 2)
struct ring_buffer_entry {
unsigned long dma_addr;
struct usrp_transfer_frame *frame_addr;
};
#endif
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