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496 lines
12 KiB
496 lines
12 KiB
/*
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* arch/arm/mach-orion5x/dns323-setup.c
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*
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* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/pci.h>
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#include <linux/irq.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mv643xx_eth.h>
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#include <linux/leds.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <linux/i2c.h>
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#include <linux/ata_platform.h>
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#include <asm/mach-types.h>
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#include <asm/gpio.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/pci.h>
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#include <mach/orion5x.h>
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#include "common.h"
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#include "mpp.h"
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#define DNS323_GPIO_LED_RIGHT_AMBER 1
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#define DNS323_GPIO_LED_LEFT_AMBER 2
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#define DNS323_GPIO_SYSTEM_UP 3
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#define DNS323_GPIO_LED_POWER1 4
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#define DNS323_GPIO_LED_POWER2 5
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#define DNS323_GPIO_OVERTEMP 6
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#define DNS323_GPIO_RTC 7
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#define DNS323_GPIO_POWER_OFF 8
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#define DNS323_GPIO_KEY_POWER 9
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#define DNS323_GPIO_KEY_RESET 10
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/****************************************************************************
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* PCI setup
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*/
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static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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int irq;
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/*
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* Check for devices with hard-wired IRQs.
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*/
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irq = orion5x_pci_map_irq(dev, slot, pin);
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if (irq != -1)
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return irq;
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return -1;
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}
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static struct hw_pci dns323_pci __initdata = {
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.nr_controllers = 2,
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.swizzle = pci_std_swizzle,
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.setup = orion5x_pci_sys_setup,
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.scan = orion5x_pci_sys_scan_bus,
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.map_irq = dns323_pci_map_irq,
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};
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static int __init dns323_dev_id(void)
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{
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u32 dev, rev;
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orion5x_pcie_id(&dev, &rev);
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return dev;
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}
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static int __init dns323_pci_init(void)
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{
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/* The 5182 doesn't really use its PCI bus, and initialising PCI
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* gets in the way of initialising the SATA controller.
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*/
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if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
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pci_common_init(&dns323_pci);
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return 0;
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}
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subsys_initcall(dns323_pci_init);
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/****************************************************************************
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* 8MiB NOR flash (Spansion S29GL064M90TFIR4)
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*
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* Layout as used by D-Link:
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* 0x00000000-0x00010000 : "MTD1"
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* 0x00010000-0x00020000 : "MTD2"
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* 0x00020000-0x001a0000 : "Linux Kernel"
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* 0x001a0000-0x007d0000 : "File System"
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* 0x007d0000-0x00800000 : "u-boot"
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*/
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#define DNS323_NOR_BOOT_BASE 0xf4000000
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#define DNS323_NOR_BOOT_SIZE SZ_8M
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static struct mtd_partition dns323_partitions[] = {
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{
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.name = "MTD1",
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.size = 0x00010000,
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.offset = 0,
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}, {
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.name = "MTD2",
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.size = 0x00010000,
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.offset = 0x00010000,
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}, {
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.name = "Linux Kernel",
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.size = 0x00180000,
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.offset = 0x00020000,
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}, {
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.name = "File System",
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.size = 0x00630000,
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.offset = 0x001A0000,
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}, {
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.name = "u-boot",
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.size = 0x00030000,
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.offset = 0x007d0000,
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},
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};
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static struct physmap_flash_data dns323_nor_flash_data = {
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.width = 1,
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.parts = dns323_partitions,
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.nr_parts = ARRAY_SIZE(dns323_partitions)
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};
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static struct resource dns323_nor_flash_resource = {
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.flags = IORESOURCE_MEM,
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.start = DNS323_NOR_BOOT_BASE,
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.end = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
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};
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static struct platform_device dns323_nor_flash = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &dns323_nor_flash_data,
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},
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.resource = &dns323_nor_flash_resource,
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.num_resources = 1,
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};
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/****************************************************************************
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* Ethernet
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*/
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static struct mv643xx_eth_platform_data dns323_eth_data = {
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.phy_addr = MV643XX_ETH_PHY_ADDR(8),
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};
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/* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
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* functions be kept somewhere?
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*/
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static int __init dns323_parse_hex_nibble(char n)
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{
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if (n >= '0' && n <= '9')
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return n - '0';
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if (n >= 'A' && n <= 'F')
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return n - 'A' + 10;
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if (n >= 'a' && n <= 'f')
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return n - 'a' + 10;
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return -1;
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}
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static int __init dns323_parse_hex_byte(const char *b)
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{
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int hi;
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int lo;
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hi = dns323_parse_hex_nibble(b[0]);
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lo = dns323_parse_hex_nibble(b[1]);
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if (hi < 0 || lo < 0)
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return -1;
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return (hi << 4) | lo;
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}
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static int __init dns323_read_mac_addr(void)
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{
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u_int8_t addr[6];
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int i;
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char *mac_page;
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/* MAC address is stored as a regular ol' string in /dev/mtdblock4
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* (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
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*/
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mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
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if (!mac_page)
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return -ENOMEM;
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/* Sanity check the string we're looking at */
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for (i = 0; i < 5; i++) {
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if (*(mac_page + (i * 3) + 2) != ':') {
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goto error_fail;
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}
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}
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for (i = 0; i < 6; i++) {
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int byte;
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byte = dns323_parse_hex_byte(mac_page + (i * 3));
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if (byte < 0) {
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goto error_fail;
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}
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addr[i] = byte;
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}
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iounmap(mac_page);
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printk("DNS323: Found ethernet MAC address: ");
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for (i = 0; i < 6; i++)
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printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
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memcpy(dns323_eth_data.mac_addr, addr, 6);
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return 0;
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error_fail:
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iounmap(mac_page);
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return -EINVAL;
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}
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/****************************************************************************
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* GPIO LEDs (simple - doesn't use hardware blinking support)
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*/
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#define ORION_BLINK_HALF_PERIOD 100 /* ms */
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static int dns323_gpio_blink_set(unsigned gpio,
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unsigned long *delay_on, unsigned long *delay_off)
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{
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static int value = 0;
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if (!*delay_on && !*delay_off)
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*delay_on = *delay_off = ORION_BLINK_HALF_PERIOD;
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if (ORION_BLINK_HALF_PERIOD == *delay_on
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&& ORION_BLINK_HALF_PERIOD == *delay_off) {
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value = !value;
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orion_gpio_set_blink(gpio, value);
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return 0;
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}
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return -EINVAL;
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}
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static struct gpio_led dns323_leds[] = {
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{
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.name = "power:blue",
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.gpio = DNS323_GPIO_LED_POWER2,
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.default_trigger = "timer",
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}, {
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.name = "right:amber",
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.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
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.active_low = 1,
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}, {
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.name = "left:amber",
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.gpio = DNS323_GPIO_LED_LEFT_AMBER,
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.active_low = 1,
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},
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};
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static struct gpio_led_platform_data dns323_led_data = {
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.num_leds = ARRAY_SIZE(dns323_leds),
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.leds = dns323_leds,
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.gpio_blink_set = dns323_gpio_blink_set,
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};
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static struct platform_device dns323_gpio_leds = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &dns323_led_data,
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},
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};
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/****************************************************************************
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* GPIO Attached Keys
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*/
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static struct gpio_keys_button dns323_buttons[] = {
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{
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.code = KEY_RESTART,
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.gpio = DNS323_GPIO_KEY_RESET,
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.desc = "Reset Button",
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.active_low = 1,
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}, {
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.code = KEY_POWER,
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.gpio = DNS323_GPIO_KEY_POWER,
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.desc = "Power Button",
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.active_low = 1,
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},
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};
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static struct gpio_keys_platform_data dns323_button_data = {
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.buttons = dns323_buttons,
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.nbuttons = ARRAY_SIZE(dns323_buttons),
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};
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static struct platform_device dns323_button_device = {
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.name = "gpio-keys",
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.id = -1,
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.num_resources = 0,
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.dev = {
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.platform_data = &dns323_button_data,
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},
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};
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/*****************************************************************************
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* SATA
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*/
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static struct mv_sata_platform_data dns323_sata_data = {
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.n_ports = 2,
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};
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/****************************************************************************
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* General Setup
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*/
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static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
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{ 0, MPP_PCIE_RST_OUTn },
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{ 1, MPP_GPIO }, /* right amber LED (sata ch0) */
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{ 2, MPP_GPIO }, /* left amber LED (sata ch1) */
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{ 3, MPP_UNUSED },
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{ 4, MPP_GPIO }, /* power button LED */
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{ 5, MPP_GPIO }, /* power button LED */
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{ 6, MPP_GPIO }, /* GMT G751-2f overtemp */
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{ 7, MPP_GPIO }, /* M41T80 nIRQ/OUT/SQW */
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{ 8, MPP_GPIO }, /* triggers power off */
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{ 9, MPP_GPIO }, /* power button switch */
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{ 10, MPP_GPIO }, /* reset button switch */
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{ 11, MPP_UNUSED },
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{ 12, MPP_UNUSED },
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{ 13, MPP_UNUSED },
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{ 14, MPP_UNUSED },
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{ 15, MPP_UNUSED },
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{ 16, MPP_UNUSED },
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{ 17, MPP_UNUSED },
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{ 18, MPP_UNUSED },
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{ 19, MPP_UNUSED },
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{ -1 },
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};
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static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
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{ 0, MPP_UNUSED },
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{ 1, MPP_GPIO }, /* right amber LED (sata ch0) */
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{ 2, MPP_GPIO }, /* left amber LED (sata ch1) */
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{ 3, MPP_GPIO }, /* system up flag */
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{ 4, MPP_GPIO }, /* power button LED */
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{ 5, MPP_GPIO }, /* power button LED */
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{ 6, MPP_GPIO }, /* GMT G751-2f overtemp */
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{ 7, MPP_GPIO }, /* M41T80 nIRQ/OUT/SQW */
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{ 8, MPP_GPIO }, /* triggers power off */
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{ 9, MPP_GPIO }, /* power button switch */
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{ 10, MPP_GPIO }, /* reset button switch */
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{ 11, MPP_UNUSED },
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{ 12, MPP_SATA_LED },
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{ 13, MPP_SATA_LED },
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{ 14, MPP_SATA_LED },
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{ 15, MPP_SATA_LED },
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{ 16, MPP_UNUSED },
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{ 17, MPP_UNUSED },
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{ 18, MPP_UNUSED },
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{ 19, MPP_UNUSED },
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{ -1 },
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};
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/*
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* On the DNS-323 the following devices are attached via I2C:
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*
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* i2c addr | chip | description
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* 0x3e | GMT G760Af | fan speed PWM controller
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* 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
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* 0x68 | ST M41T80 | RTC w/ alarm
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*/
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static struct i2c_board_info __initdata dns323_i2c_devices[] = {
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{
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I2C_BOARD_INFO("g760a", 0x3e),
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}, {
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I2C_BOARD_INFO("lm75", 0x48),
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}, {
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I2C_BOARD_INFO("m41t80", 0x68),
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},
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};
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/* DNS-323 rev. A specific power off method */
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static void dns323a_power_off(void)
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{
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pr_info("%s: triggering power-off...\n", __func__);
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gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
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}
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/* DNS-323 rev B specific power off method */
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static void dns323b_power_off(void)
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{
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pr_info("%s: triggering power-off...\n", __func__);
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/* Pin has to be changed to 1 and back to 0 to do actual power off. */
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gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
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mdelay(100);
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gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
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}
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static void __init dns323_init(void)
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{
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/* Setup basic Orion functions. Need to be called early. */
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orion5x_init();
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/* Just to be tricky, the 5182 has a completely different
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* set of MPP modes to the 5181.
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*/
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if (dns323_dev_id() == MV88F5182_DEV_ID)
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orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
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else {
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orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
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writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */
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}
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/* setup flash mapping
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* CS3 holds a 8 MB Spansion S29GL064M90TFIR4
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*/
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orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
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platform_device_register(&dns323_nor_flash);
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/* The 5181 power LED is active low and requires
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* DNS323_GPIO_LED_POWER1 to also be low.
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*/
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if (dns323_dev_id() == MV88F5181_DEV_ID) {
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dns323_leds[0].active_low = 1;
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gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
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}
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platform_device_register(&dns323_gpio_leds);
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platform_device_register(&dns323_button_device);
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i2c_register_board_info(0, dns323_i2c_devices,
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ARRAY_SIZE(dns323_i2c_devices));
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/*
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* Configure peripherals.
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*/
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if (dns323_read_mac_addr() < 0)
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printk("DNS323: Failed to read MAC address\n");
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orion5x_ehci0_init();
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orion5x_eth_init(&dns323_eth_data);
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orion5x_i2c_init();
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orion5x_uart0_init();
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/* The 5182 has its SATA controller on-chip, and needs its own little
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* init routine.
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*/
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if (dns323_dev_id() == MV88F5182_DEV_ID)
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orion5x_sata_init(&dns323_sata_data);
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/* The 5182 has flag to indicate the system is up. Without this flag
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* set, power LED will flash and cannot be controlled via leds-gpio.
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*/
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if (dns323_dev_id() == MV88F5182_DEV_ID)
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gpio_set_value(DNS323_GPIO_SYSTEM_UP, 1);
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/* Register dns323 specific power-off method */
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if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
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gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
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pr_err("DNS323: failed to setup power-off GPIO\n");
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if (dns323_dev_id() == MV88F5182_DEV_ID)
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pm_power_off = dns323b_power_off;
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else
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pm_power_off = dns323a_power_off;
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}
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/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
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MACHINE_START(DNS323, "D-Link DNS-323")
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/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
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.phys_io = ORION5X_REGS_PHYS_BASE,
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.io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
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.boot_params = 0x00000100,
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.init_machine = dns323_init,
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.map_io = orion5x_map_io,
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.init_irq = orion5x_init_irq,
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.timer = &orion5x_timer,
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.fixup = tag_fixup_mem32,
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MACHINE_END
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