adm8668: add 3.14 kernel support

[openwrt/svn-archive/archive.git] / target / linux / adm8668 / files-3.14 / arch / mips / adm8668 / platform.c

diff --git a/target/linux/adm8668/files-3.14/arch/mips/adm8668/platform.c b/target/linux/adm8668/files-3.14/arch/mips/adm8668/platform.c
new file mode 100644 (file)
index 0000000..9e40691
--- /dev/null
+++ b/target/linux/adm8668/files-3.14/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);