1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Copyright (c) 2007 Will Robertson
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
20 ****************************************************************************/
24 #define USE_CSPI1_MODULE (1 << 0)
25 #define USE_CSPI2_MODULE (1 << 1)
26 #define USE_CSPI3_MODULE (1 << 2)
28 /* SPI_MODULE_MASK is set in target's config */
29 enum spi_module_number
31 __CSPI_NUM_START
= -1, /* The first will be 0 */
32 #if (SPI_MODULE_MASK & USE_CSPI1_MODULE)
35 #if (SPI_MODULE_MASK & USE_CSPI2_MODULE)
38 #if (SPI_MODULE_MASK & USE_CSPI3_MODULE)
46 volatile uint32_t rxdata
; /* 00h */
47 volatile uint32_t txdata
; /* 04h */
48 volatile uint32_t conreg
; /* 08h */
49 volatile uint32_t intreg
; /* 0Ch */
50 volatile uint32_t dmareg
; /* 10h */
51 volatile uint32_t statreg
; /* 14h */
52 volatile uint32_t periodreg
; /* 18h */
53 volatile uint32_t skip1
[0x69]; /* 1Ch */
54 volatile uint32_t testreg
; /* 1C0h */
59 enum spi_module_number num
; /* Module number (CSPIx_NUM) */
60 unsigned long conreg
; /* CSPI conreg setup */
61 unsigned long periodreg
; /* CSPI periodreg setup */
71 /* One-time init of SPI driver */
74 /* Enable the specified module for the node */
75 void spi_enable_module(struct spi_node
*node
);
77 /* Disabled the specified module for the node */
78 void spi_disable_module(struct spi_node
*node
);
80 /* Lock module mutex */
81 void spi_lock(struct spi_node
*node
);
83 /* Unlock module mutex */
84 void spi_unlock(struct spi_node
*node
);
86 /* Send and/or receive data on the specified node */
87 int spi_transfer(struct spi_node
*node
, struct spi_transfer
*trans
);
89 #endif /* SPI_IMX31_H */