[brcm63xx] prepare for SPI controller driver

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14755 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 60 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/files/arch/mips/bcm63xx/dev-spi.c b/target/linux/brcm63xx/files/arch/mips/bcm63xx/dev-spi.c
new file mode 100644
index 0000000000..4aea088d2d
--- /dev/null
+++ b/target/linux/brcm63xx/files/arch/mips/bcm63xx/dev-spi.c
@@ -0,0 +1,60 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2009 Florian Fainelli <florian@openwrt.org> 
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_spi.h>
+
+static struct resource spi_resources[] = {
+	{
+		.start		= -1, /* filled at runtime */
+		.end		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct bcm63xx_spi_pdata spi_pdata = {
+	.bus_num		= 0,
+	.num_chipselect		= 4,
+	.speed_hz		= 50000000,	/* Fclk */
+};
+
+static struct platform_device bcm63xx_spi_device = {
+	.name		= "bcm63xx_spi",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(spi_resources),
+	.resource	= spi_resources,
+	.dev.pdata	= &spi_pdata;
+};
+
+int __init bcm63xx_spi_register(void)
+{
+	spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
+	spi_resources[0].end = spi_resources[0].start;
+	spi_resources[0].end += RSET_SPI_SIZE - 1;
+	spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
+
+	/* Fill in platform data */
+	if (CPU_IS_BCM6338() || CPU_IS_BCM6348()) {
+		spi_pdata.msg_fifo_size = SPI_BCM_6338_SPI_MSG_DATA_SIZE;
+		spi_pdata.rx_fifo_size = SPI_BCM_6338_SPI_RX_DATA_SIZE;
+	}
+
+	if (CPU_IS_BCM6358()) {
+		spi_pdata.msg_fifo_size = SPI_BCM_6358_SPI_MSG_DATA_SIZE;
+		spi_pdata.rx_fifo_size =  SPI_BCM_6358_SPI_RX_DATA_SIZE;
+	}
+	
+	return platform_device_register(&bcm63xx_spi_device);
+}