From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../files-3.18/arch/mips/adm8668/platform.c        | 196 +++++++++++++++++++++
 1 file changed, 196 insertions(+)
 create mode 100644 target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c

(limited to 'target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c')

diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c
new file mode 100644
index 0000000..9e40691
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/tulip.h>
+#include <linux/usb/ehci_pdriver.h>
+#include <linux/mtd/physmap.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
+
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <adm8668.h>
+
+#define ADM8868_UBOOT_ENV		0x20000
+#define ADM8868_UBOOT_WAN_MAC		0x5ac
+#define ADM8868_UBOOT_LAN_MAC		0x404
+
+static void adm8668_uart_set_mctrl(struct amba_device *dev,
+					void __iomem *base,
+					unsigned int mcrtl)
+{
+}
+
+static struct amba_pl010_data adm8668_uart0_data = {
+	.set_mctrl = adm8668_uart_set_mctrl,
+};
+
+static struct amba_device adm8668_uart0_device = {
+	.dev = {
+		.init_name	= "apb:uart0",
+		.platform_data	= &adm8668_uart0_data,
+	},
+	.res = {
+		.start		= ADM8668_UART0_BASE,
+		.end		= ADM8668_UART0_BASE + 0xF,
+		.flags		= IORESOURCE_MEM,
+	},
+	.irq = {
+		ADM8668_UART0_IRQ,
+		-1
+	},
+	.periphid = 0x0041010,
+};
+
+static struct resource eth0_resources[] = {
+	{
+		.start		= ADM8668_LAN_BASE,
+		.end		= ADM8668_LAN_BASE + 256,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= ADM8668_LAN_IRQ,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct tulip_platform_data eth0_pdata = {
+	.chip_id	= ADM8668,
+};
+
+static struct platform_device adm8668_eth0_device = {
+	.name		= "tulip",
+	.id		= 0,
+	.resource	= eth0_resources,
+	.num_resources	= ARRAY_SIZE(eth0_resources),
+	.dev.platform_data = &eth0_pdata,
+};
+
+static struct resource eth1_resources[] = {
+	{
+		.start		= ADM8668_WAN_BASE,
+		.end		= ADM8668_WAN_BASE + 256,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= ADM8668_WAN_IRQ,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct tulip_platform_data eth1_pdata = {
+	.chip_id	= ADM8668,
+};
+
+static struct platform_device adm8668_eth1_device = {
+	.name		= "tulip",
+	.id		= 1,
+	.resource	= eth1_resources,
+	.num_resources	= ARRAY_SIZE(eth1_resources),
+	.dev.platform_data = &eth1_pdata,
+};
+
+static struct resource usb_resources[] = {
+	{
+		.start	= ADM8668_USB_BASE,
+		.end	= ADM8668_USB_BASE + 0x1FFFFF,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= ADM8668_USB_IRQ,
+		.end	= ADM8668_USB_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct usb_ehci_pdata usb_pdata = {
+	.caps_offset	= 0x100,
+	.has_tt		= 1,
+};
+
+static struct platform_device adm8668_usb_device = {
+	.name		= "ehci-platform",
+	.id		= -1,
+	.resource	= usb_resources,
+	.num_resources	= ARRAY_SIZE(usb_resources),
+	.dev.platform_data = &usb_pdata,
+};
+
+static struct platform_device *adm8668_devs[] = {
+	&adm8668_eth0_device,
+	&adm8668_eth1_device,
+	&adm8668_usb_device,
+};
+
+static void adm8668_fetch_mac(int unit)
+{
+	u8 *mac;
+	u32 offset;
+	struct tulip_platform_data *pdata;
+
+	switch (unit) {
+	case -1:
+	case 0:
+		offset = ADM8868_UBOOT_LAN_MAC;
+		pdata = &eth0_pdata;
+		break;
+	case 1:
+		offset = ADM8868_UBOOT_WAN_MAC;
+		pdata = &eth1_pdata;
+		break;
+	default:
+		pr_err("unsupported ethernet unit: %d\n", unit);
+		return;
+	}
+
+	mac = (u8 *)(KSEG1ADDR(ADM8668_SMEM1_BASE) + ADM8868_UBOOT_ENV + offset);
+
+	memcpy(pdata->mac, mac, sizeof(pdata->mac));
+}
+
+static void adm8668_ehci_workaround(void)
+{
+	u32 chipid;
+
+	chipid = ADM8668_CONFIG_REG(ADM8668_CR0);
+	ADM8668_CONFIG_REG(ADM8668_CR66) = 0x0C1600D9;
+
+	if (chipid == 0x86880001)
+		return;
+
+	ADM8668_CONFIG_REG(ADM8668_CR66) &= ~(3 << 20);
+	ADM8668_CONFIG_REG(ADM8668_CR66) |= (1 << 20);
+	pr_info("ADM8668: applied USB workaround\n");
+}
+
+
+int __init adm8668_devs_register(void)
+{
+	int ret;
+
+	ret = amba_device_register(&adm8668_uart0_device, &iomem_resource);
+	if (ret)
+		panic("failed to register AMBA UART");
+
+	adm8668_fetch_mac(0);
+	adm8668_fetch_mac(1);
+	adm8668_ehci_workaround();
+
+	return platform_add_devices(adm8668_devs, ARRAY_SIZE(adm8668_devs));
+}
+arch_initcall(adm8668_devs_register);
-- 
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