diff options
Diffstat (limited to 'host/include/linux/usrp_e.h')
| -rw-r--r-- | host/include/linux/usrp_e.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/host/include/linux/usrp_e.h b/host/include/linux/usrp_e.h new file mode 100644 index 000000000..b098ad114 --- /dev/null +++ b/host/include/linux/usrp_e.h @@ -0,0 +1,88 @@ + +/* + * 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 status; + __u32 len; + __u8 buf[]; +}; + +/* Flag defines */ +#define RB_USER (1 << 0) +#define RB_KERNEL (1 << 1) +#define RB_OVERRUN (1 << 2) +#define RB_DMA_ACTIVE (1 << 3) + +struct ring_buffer_entry { + unsigned int flags; + unsigned long dma_addr; + struct usrp_transfer_frame *frame_addr; +}; + +#endif |