Merge branch 'adm8668'

[openwrt.git] / target / linux / adm8668 / files / arch / mips / adm8668 / platform.c

diff --git a/target/linux/adm8668/files/arch/mips/adm8668/platform.c b/target/linux/adm8668/files/arch/mips/adm8668/platform.c
new file mode 100644 (file)
index 0000000..e97ad6a
--- /dev/null
+++ b/target/linux/adm8668/files/arch/mips/adm8668/platform.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ *
+ * 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/mtd/physmap.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <adm8668.h>
+
+extern char _end;
+#define PFN_ALIGN(x)    (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
+
+static struct resource uart_resources[] = {
+       {
+               .start          = ADM8668_UART0_BASE,
+               .end            = ADM8668_UART0_BASE + 0xF,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = INT_LVL_UART0,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device adm8668_uart_device = {
+       .name           = "adm8668_uart",
+       .id             = 0,
+       .resource       = uart_resources,
+       .num_resources  = ARRAY_SIZE(uart_resources),
+};
+
+static struct resource eth0_resources[] = {
+       {
+               .start          = ADM8668_LAN_BASE,
+               .end            = ADM8668_LAN_BASE + 256,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = INT_LVL_LAN,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device adm8668_eth0_device = {
+       .name           = "adm8668_eth",
+       .id             = 0,
+       .resource       = eth0_resources,
+       .num_resources  = ARRAY_SIZE(eth0_resources),
+};
+
+static struct resource eth1_resources[] = {
+       {
+               .start          = ADM8668_WAN_BASE,
+               .end            = ADM8668_WAN_BASE + 256,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = INT_LVL_WAN,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device adm8668_eth1_device = {
+       .name           = "adm8668_eth",
+       .id             = 1,
+       .resource       = eth1_resources,
+       .num_resources  = ARRAY_SIZE(eth1_resources),
+};
+
+static void adm8668_restart(char *cmd)
+{
+       int i;
+
+       /* stop eth0 and eth1 */
+       ADM8668_LAN_REG(NETCSR6) = BIT_1|BIT_13;
+       ADM8668_LAN_REG(NETCSR7) = 0;
+       ADM8668_WAN_REG(NETCSR6) = BIT_1|BIT_13;
+       ADM8668_WAN_REG(NETCSR7) = 0;
+
+       /* reset PHY */
+       ADM8668_WAN_REG(NETCSR37) = 0x20;
+       for (i = 0; i < 10000; i++)
+               ;
+       ADM8668_WAN_REG(NETCSR37) = 0;
+       for (i = 0; i < 10000; i++)
+               ;
+
+       *(volatile unsigned int *)0xB1600000 = 1;       /* reset eth0 mac */
+       *(volatile unsigned int *)0xB1A00000 = 1;       /* reset eth1 mac */
+       *(volatile unsigned int *)0xB1800000 = 1;       /* reset wlan0 mac */
+
+       /* the real deal */
+       for (i = 0; i < 1000; i++)
+               ;
+       ADM8668_CONFIG_REG(ADM8668_CR1) = BIT_0;
+}
+
+int __devinit adm8668_devs_register(void)
+{
+       _machine_restart = adm8668_restart;
+       platform_device_register(&adm8668_uart_device);
+       platform_device_register(&adm8668_eth0_device);
+       platform_device_register(&adm8668_eth1_device);
+
+       return 0;
+}
+
+void __init plat_time_init(void)
+{
+       int adj = (ADM8668_CONFIG_REG(ADM8668_CR3) >> 11) & 0xf;
+
+       /* adjustable clock selection
+          CR3 bit 14~11, 0000 -> 175MHz, 0001 -> 180MHz, etc... */
+
+       mips_hpt_frequency = (SYS_CLOCK + adj * 5000000) / 2;
+       printk("ADM8668 CPU clock: %d MHz\n", 2*mips_hpt_frequency / 1000000);
+}
+
+void __init plat_mem_setup(void)
+{
+       /* prom_init seemed like easier place for this. it's tooo simple */
+}
+
+const char *get_system_type(void)
+{
+        unsigned long chipid = ADM8668_CONFIG_REG(ADM8668_CR0);
+        int adj = (ADM8668_CONFIG_REG(ADM8668_CR3) >> 11) & 0xf;
+        int product, revision, mhz;
+       static char ret[32];
+
+        product = chipid >> 16;
+        revision = chipid & 0xffff;
+       mhz = (SYS_CLOCK/1000000) + (adj * 5);
+
+       /* i getting fancy :\ */
+       snprintf(ret, sizeof(ret), "ADM%xr%x %dMHz", product, revision, mhz);
+
+       return ret;
+}
+
+arch_initcall(adm8668_devs_register);