Add support for a Freescale non-CPM SPI controller

This patch adds support for the SPI controller found on Freescale PowerPC
processors such as the MCP834x family.  Additionally, a new config option,
CONFIG_HARD_SPI, is added for general purpose SPI controller use.

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

2 files changed, 54 insertions, 4 deletions

diff --git a/include/asm-ppc/immap_83xx.h b/include/asm-ppc/immap_83xx.h
index 34ea295..c16a098 100644
--- a/include/asm-ppc/immap_83xx.h
+++ b/include/asm-ppc/immap_83xx.h
@@ -30,6 +30,7 @@
 
 #include <asm/types.h>
 #include <asm/fsl_i2c.h>
+#include <asm/mpc8xxx_spi.h>
 
 /*
  * Local Access Window
@@ -627,7 +628,7 @@ typedef struct immap {
 	u8			res3[0x900];
 	lbus83xx_t		lbus;		/* Local Bus Controller Registers */
 	u8			res4[0x1000];
-	spi83xx_t		spi;		/* Serial Peripheral Interface */
+	spi8xxx_t		spi;		/* Serial Peripheral Interface */
 	dma83xx_t		dma;		/* DMA */
 	pciconf83xx_t		pci_conf[2];	/* PCI Software Configuration Registers */
 	ios83xx_t		ios;		/* Sequencer */
@@ -661,7 +662,7 @@ typedef struct immap {
 	u8			res2[0x900];
 	lbus83xx_t		lbus;		/* Local Bus Controller Registers */
 	u8			res3[0x1000];
-	spi83xx_t		spi;		/* Serial Peripheral Interface */
+	spi8xxx_t		spi;		/* Serial Peripheral Interface */
 	dma83xx_t		dma;		/* DMA */
 	pciconf83xx_t		pci_conf[1];	/* PCI Software Configuration Registers */
 	u8			res4[0x80];
@@ -696,7 +697,7 @@ typedef struct immap {
 	u8			res2[0x900];
 	lbus83xx_t		lbus;		/* Local Bus Controller Registers */
 	u8			res3[0x1000];
-	spi83xx_t		spi;		/* Serial Peripheral Interface */
+	spi8xxx_t		spi;		/* Serial Peripheral Interface */
 	dma83xx_t		dma;		/* DMA */
 	pciconf83xx_t		pci_conf[1];	/* PCI Software Configuration Registers */
 	u8			res4[0x80];
@@ -741,7 +742,7 @@ typedef struct immap {
 	u8			res2[0x900];
 	lbus83xx_t		lbus;		/* Local Bus Controller Registers */
 	u8			res3[0x1000];
-	spi83xx_t		spi;		/* Serial Peripheral Interface */
+	spi8xxx_t		spi;		/* Serial Peripheral Interface */
 	dma83xx_t		dma;		/* DMA */
 	pciconf83xx_t		pci_conf[1];	/* PCI Software Configuration Registers */
 	u8			res4[0x80];
diff --git a/include/asm-ppc/mpc8xxx_spi.h b/include/asm-ppc/mpc8xxx_spi.h
new file mode 100644
index 0000000..38f12b9
--- /dev/null
+++ b/include/asm-ppc/mpc8xxx_spi.h
@@ -0,0 +1,49 @@
+/*
+ * Freescale non-CPM SPI Controller
+ *
+ * Copyright 2008 Qstreams Networks, Inc.
+ *
+ * This software may be used and distributed according to the
+ * terms of the GNU Public License, Version 2, incorporated
+ * herein by reference.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * Version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _ASM_MPC8XXX_SPI_H_
+#define _ASM_MPC8XXX_SPI_H_
+
+#include <asm/types.h>
+
+#if defined(CONFIG_MPC834X) || \
+	defined(CONFIG_MPC8313) || \
+	defined(CONFIG_MPC8315) || \
+	defined(CONFIG_MPC837X)
+
+typedef struct spi8xxx
+{
+	u8 res0[0x20];	/* 0x0-0x01f reserved */
+	u32 mode;	/* mode register  */
+	u32 event;	/* event register */
+	u32 mask;	/* mask register  */
+	u32 com;	/* command register */
+	u32 tx;		/* transmit register */
+	u32 rx;		/* receive register */
+	u8 res1[0xC8];	/* fill up to 0x100 */
+} spi8xxx_t;
+
+#endif
+
+#endif	/* _ASM_MPC8XXX_SPI_H_ */