1 files changed, 89 insertions, 0 deletions

diff --git a/firmware/target/arm/imx31/spi-imx31.h b/firmware/target/arm/imx31/spi-imx31.h
new file mode 100644
index 0000000000..cf536b646d
--- /dev/null
+++ b/firmware/target/arm/imx31/spi-imx31.h
@@ -0,0 +1,89 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2007 Will Robertson
+ *
+ * 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.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef SPI_IMX31_H
+#define SPI_IMX31_H
+
+#define USE_CSPI1_MODULE (1 << 0)
+#define USE_CSPI2_MODULE (1 << 1)
+#define USE_CSPI3_MODULE (1 << 2)
+
+/* SPI_MODULE_MASK is set in target's config */
+enum spi_module_number
+{
+    __CSPI_NUM_START = -1, /* The first will be 0 */
+#if (SPI_MODULE_MASK & USE_CSPI1_MODULE)
+    CSPI1_NUM,
+#endif
+#if (SPI_MODULE_MASK & USE_CSPI2_MODULE)
+    CSPI2_NUM,
+#endif
+#if (SPI_MODULE_MASK & USE_CSPI3_MODULE)
+    CSPI3_NUM,
+#endif
+    SPI_NUM_CSPI,
+};
+
+struct cspi_map
+{
+    volatile uint32_t rxdata;       /* 00h */
+    volatile uint32_t txdata;       /* 04h */
+    volatile uint32_t conreg;       /* 08h */
+    volatile uint32_t intreg;       /* 0Ch */
+    volatile uint32_t dmareg;       /* 10h */
+    volatile uint32_t statreg;      /* 14h */
+    volatile uint32_t periodreg;    /* 18h */
+    volatile uint32_t skip1[0x69];  /* 1Ch */
+    volatile uint32_t testreg;      /* 1C0h */
+};
+
+struct spi_node
+{
+    enum spi_module_number num; /* Module number (CSPIx_NUM) */
+    unsigned long conreg;       /* CSPI conreg setup */
+    unsigned long periodreg;    /* CSPI periodreg setup */
+};
+
+struct spi_transfer
+{
+    const void *txbuf;
+    void       *rxbuf;
+    int         count;
+};
+
+/* One-time init of SPI driver */
+void spi_init(void);
+
+/* Enable the specified module for the node */
+void spi_enable_module(struct spi_node *node);
+
+/* Disabled the specified module for the node */
+void spi_disable_module(struct spi_node *node);
+
+/* Lock module mutex */
+void spi_lock(struct spi_node *node);
+
+/* Unlock module mutex */
+void spi_unlock(struct spi_node *node);
+
+/* Send and/or receive data on the specified node */
+int spi_transfer(struct spi_node *node, struct spi_transfer *trans);
+
+#endif /* SPI_IMX31_H */