[ramips] initial support for RT288x/RT305x

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17439 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 96 insertions, 0 deletions

diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c
new file mode 100644
index 000000000..5dd1022b9
--- /dev/null
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c
@@ -0,0 +1,96 @@
+/*
+ *  Ralink RT305x SoC platform device registration
+ *
+ *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/addrspace.h>
+
+#include <asm/mach-ralink/rt305x.h>
+#include <asm/mach-ralink/rt305x_regs.h>
+#include "devices.h"
+
+static struct resource rt305x_flash0_resources[] = {
+	{
+		.flags	= IORESOURCE_MEM,
+		.start	= KSEG1ADDR(RT305X_FLASH0_BASE),
+		.end	= KSEG1ADDR(RT305X_FLASH0_BASE) +
+			  RT305X_FLASH0_SIZE - 1,
+	},
+};
+
+static struct platform_device rt305x_flash0_device = {
+	.name		= "physmap-flash",
+	.resource	= rt305x_flash0_resources,
+	.num_resources	= ARRAY_SIZE(rt305x_flash0_resources),
+};
+
+static struct resource rt305x_flash1_resources[] = {
+	{
+		.flags	= IORESOURCE_MEM,
+		.start	= KSEG1ADDR(RT305X_FLASH1_BASE),
+		.end	= KSEG1ADDR(RT305X_FLASH1_BASE) +
+			  RT305X_FLASH1_SIZE - 1,
+	},
+};
+
+static struct platform_device rt305x_flash1_device = {
+	.name		= "physmap-flash",
+	.resource	= rt305x_flash1_resources,
+	.num_resources	= ARRAY_SIZE(rt305x_flash1_resources),
+};
+
+static int rt305x_flash_instance __initdata;
+void __init rt305x_register_flash(unsigned int id,
+				  struct physmap_flash_data *pdata)
+{
+	struct platform_device *pdev;
+	u32 t;
+	int reg;
+
+	switch (id) {
+	case 0:
+		pdev = &rt305x_flash0_device;
+		reg = MEMC_REG_FLASH_CFG0;
+		break;
+	case 1:
+		pdev = &rt305x_flash1_device;
+		reg = MEMC_REG_FLASH_CFG1;
+		break;
+	default:
+		return;
+	}
+
+	t = rt305x_memc_rr(reg);
+	t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
+
+	switch (t) {
+	case FLASH_CFG_WIDTH_8BIT:
+		pdata->width = 1;
+		break;
+	case FLASH_CFG_WIDTH_16BIT:
+		pdata->width = 2;
+		break;
+	case FLASH_CFG_WIDTH_32BIT:
+		pdata->width = 4;
+		break;
+	default:
+		printk(KERN_ERR "RT305x: flash bank%u witdh is invalid\n", id);
+		return;
+	}
+
+	pdev->dev.platform_data = pdata;
+	pdev->id = rt305x_flash_instance;
+
+	platform_device_register(pdev);
+	rt305x_flash_instance++;
+}