FreeBSD/Linux Kernel Cross Reference
sys/dev/spibus/spi.h
1 /*-
2 * Copyright (c) 2006 M. Warner Losh <imp@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28 struct spi_command {
29 void *tx_cmd;
30 uint32_t tx_cmd_sz;
31 void *rx_cmd;
32 uint32_t rx_cmd_sz;
33 void *tx_data;
34 uint32_t tx_data_sz;
35 void *rx_data;
36 uint32_t rx_data_sz;
37 };
38 #define SPI_COMMAND_INITIALIZER { 0 }
39
40 #define SPI_CHIP_SELECT_HIGH 0x1 /* Chip select high (else low) */
41
42 #ifdef FDT
43 #define SPIBUS_FDT_PNP_INFO(t) FDTCOMPAT_PNP_INFO(t, spibus)
44 #else
45 #define SPIBUS_FDT_PNP_INFO(t)
46 #endif
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