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linux-next/arch/arm/mach-orion5x/dns323-setup.c
Matt Palmer f93e4159b1 [ARM] DNS323: Initialise 88F5182 correctly 
The 88F5182 found in the DNS-323 rev B1 (and some other devices, such
as the CH3SNAS) require different initialisation of the SATA
controller and MPP registers.

Tested on a DNS-323 rev B1.

Signed-off-by: Matt Palmer <mpalmer@hezmatt.org>
2008-12-11 16:38:56 -05:00

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/*
* arch/arm/mach-orion5x/dns323-setup.c
*
* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/leds.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/ata_platform.h>
#include <asm/mach-types.h>
#include <asm/gpio.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"
#define DNS323_GPIO_LED_RIGHT_AMBER 1
#define DNS323_GPIO_LED_LEFT_AMBER 2
#define DNS323_GPIO_LED_POWER 5
#define DNS323_GPIO_OVERTEMP 6
#define DNS323_GPIO_RTC 7
#define DNS323_GPIO_POWER_OFF 8
#define DNS323_GPIO_KEY_POWER 9
#define DNS323_GPIO_KEY_RESET 10
/****************************************************************************
* PCI setup
*/
static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
int irq;
/*
* Check for devices with hard-wired IRQs.
*/
irq = orion5x_pci_map_irq(dev, slot, pin);
if (irq != -1)
return irq;
return -1;
}
static struct hw_pci dns323_pci __initdata = {
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = dns323_pci_map_irq,
};
static int __init dns323_dev_id(void)
{
u32 dev, rev;
orion5x_pcie_id(&dev, &rev);
return dev;
}
static int __init dns323_pci_init(void)
{
/* The 5182 doesn't really use it's PCI bus, and initialising PCI
* gets in the way of initialising the SATA controller.
*/
if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
pci_common_init(&dns323_pci);
return 0;
}
subsys_initcall(dns323_pci_init);
/****************************************************************************
* 8MiB NOR flash (Spansion S29GL064M90TFIR4)
*
* Layout as used by D-Link:
* 0x00000000-0x00010000 : "MTD1"
* 0x00010000-0x00020000 : "MTD2"
* 0x00020000-0x001a0000 : "Linux Kernel"
* 0x001a0000-0x007d0000 : "File System"
* 0x007d0000-0x00800000 : "u-boot"
*/
#define DNS323_NOR_BOOT_BASE 0xf4000000
#define DNS323_NOR_BOOT_SIZE SZ_8M
static struct mtd_partition dns323_partitions[] = {
{
.name = "MTD1",
.size = 0x00010000,
.offset = 0,
}, {
.name = "MTD2",
.size = 0x00010000,
.offset = 0x00010000,
}, {
.name = "Linux Kernel",
.size = 0x00180000,
.offset = 0x00020000,
}, {
.name = "File System",
.size = 0x00630000,
.offset = 0x001A0000,
}, {
.name = "u-boot",
.size = 0x00030000,
.offset = 0x007d0000,
},
};
static struct physmap_flash_data dns323_nor_flash_data = {
.width = 1,
.parts = dns323_partitions,
.nr_parts = ARRAY_SIZE(dns323_partitions)
};
static struct resource dns323_nor_flash_resource = {
.flags = IORESOURCE_MEM,
.start = DNS323_NOR_BOOT_BASE,
.end = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
};
static struct platform_device dns323_nor_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &dns323_nor_flash_data,
},
.resource = &dns323_nor_flash_resource,
.num_resources = 1,
};
/****************************************************************************
* Ethernet
*/
static struct mv643xx_eth_platform_data dns323_eth_data = {
.phy_addr = MV643XX_ETH_PHY_ADDR(8),
};
/* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
* functions be kept somewhere?
*/
static int __init dns323_parse_hex_nibble(char n)
{
if (n >= '0' && n <= '9')
return n - '0';
if (n >= 'A' && n <= 'F')
return n - 'A' + 10;
if (n >= 'a' && n <= 'f')
return n - 'a' + 10;
return -1;
}
static int __init dns323_parse_hex_byte(const char *b)
{
int hi;
int lo;
hi = dns323_parse_hex_nibble(b[0]);
lo = dns323_parse_hex_nibble(b[1]);
if (hi < 0 || lo < 0)
return -1;
return (hi << 4) | lo;
}
static int __init dns323_read_mac_addr(void)
{
u_int8_t addr[6];
int i;
char *mac_page;
/* MAC address is stored as a regular ol' string in /dev/mtdblock4
* (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
*/
mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
if (!mac_page)
return -ENOMEM;
/* Sanity check the string we're looking at */
for (i = 0; i < 5; i++) {
if (*(mac_page + (i * 3) + 2) != ':') {
goto error_fail;
}
}
for (i = 0; i < 6; i++) {
int byte;
byte = dns323_parse_hex_byte(mac_page + (i * 3));
if (byte < 0) {
goto error_fail;
}
addr[i] = byte;
}
iounmap(mac_page);
printk("DNS323: Found ethernet MAC address: ");
for (i = 0; i < 6; i++)
printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
memcpy(dns323_eth_data.mac_addr, addr, 6);
return 0;
error_fail:
iounmap(mac_page);
return -EINVAL;
}
/****************************************************************************
* GPIO LEDs (simple - doesn't use hardware blinking support)
*/
static struct gpio_led dns323_leds[] = {
{
.name = "power:blue",
.gpio = DNS323_GPIO_LED_POWER,
.active_low = 1,
}, {
.name = "right:amber",
.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
.active_low = 1,
}, {
.name = "left:amber",
.gpio = DNS323_GPIO_LED_LEFT_AMBER,
.active_low = 1,
},
};
static struct gpio_led_platform_data dns323_led_data = {
.num_leds = ARRAY_SIZE(dns323_leds),
.leds = dns323_leds,
};
static struct platform_device dns323_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &dns323_led_data,
},
};
/****************************************************************************
* GPIO Attached Keys
*/
static struct gpio_keys_button dns323_buttons[] = {
{
.code = KEY_RESTART,
.gpio = DNS323_GPIO_KEY_RESET,
.desc = "Reset Button",
.active_low = 1,
}, {
.code = KEY_POWER,
.gpio = DNS323_GPIO_KEY_POWER,
.desc = "Power Button",
.active_low = 1,
},
};
static struct gpio_keys_platform_data dns323_button_data = {
.buttons = dns323_buttons,
.nbuttons = ARRAY_SIZE(dns323_buttons),
};
static struct platform_device dns323_button_device = {
.name = "gpio-keys",
.id = -1,
.num_resources = 0,
.dev = {
.platform_data = &dns323_button_data,
},
};
/*****************************************************************************
* SATA
*/
static struct mv_sata_platform_data dns323_sata_data = {
.n_ports = 2,
};
/****************************************************************************
* General Setup
*/
static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
{ 0, MPP_PCIE_RST_OUTn },
{ 1, MPP_GPIO }, /* right amber LED (sata ch0) */
{ 2, MPP_GPIO }, /* left amber LED (sata ch1) */
{ 3, MPP_UNUSED },
{ 4, MPP_GPIO }, /* power button LED */
{ 5, MPP_GPIO }, /* power button LED */
{ 6, MPP_GPIO }, /* GMT G751-2f overtemp */
{ 7, MPP_GPIO }, /* M41T80 nIRQ/OUT/SQW */
{ 8, MPP_GPIO }, /* triggers power off */
{ 9, MPP_GPIO }, /* power button switch */
{ 10, MPP_GPIO }, /* reset button switch */
{ 11, MPP_UNUSED },
{ 12, MPP_UNUSED },
{ 13, MPP_UNUSED },
{ 14, MPP_UNUSED },
{ 15, MPP_UNUSED },
{ 16, MPP_UNUSED },
{ 17, MPP_UNUSED },
{ 18, MPP_UNUSED },
{ 19, MPP_UNUSED },
{ -1 },
};
static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
{ 0, MPP_UNUSED },
{ 1, MPP_GPIO }, /* right amber LED (sata ch0) */
{ 2, MPP_GPIO }, /* left amber LED (sata ch1) */
{ 3, MPP_UNUSED },
{ 4, MPP_GPIO }, /* power button LED */
{ 5, MPP_GPIO }, /* power button LED */
{ 6, MPP_GPIO }, /* GMT G751-2f overtemp */
{ 7, MPP_GPIO }, /* M41T80 nIRQ/OUT/SQW */
{ 8, MPP_GPIO }, /* triggers power off */
{ 9, MPP_GPIO }, /* power button switch */
{ 10, MPP_GPIO }, /* reset button switch */
{ 11, MPP_UNUSED },
{ 12, MPP_SATA_LED },
{ 13, MPP_SATA_LED },
{ 14, MPP_SATA_LED },
{ 15, MPP_SATA_LED },
{ 16, MPP_UNUSED },
{ 17, MPP_UNUSED },
{ 18, MPP_UNUSED },
{ 19, MPP_UNUSED },
{ -1 },
};
/*
* On the DNS-323 the following devices are attached via I2C:
*
* i2c addr | chip | description
* 0x3e | GMT G760Af | fan speed PWM controller
* 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
* 0x68 | ST M41T80 | RTC w/ alarm
*/
static struct i2c_board_info __initdata dns323_i2c_devices[] = {
{
I2C_BOARD_INFO("g760a", 0x3e),
}, {
I2C_BOARD_INFO("lm75", 0x48),
}, {
I2C_BOARD_INFO("m41t80", 0x68),
},
};
/* DNS-323 specific power off method */
static void dns323_power_off(void)
{
pr_info("%s: triggering power-off...\n", __func__);
gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
}
static void __init dns323_init(void)
{
/* Setup basic Orion functions. Need to be called early. */
orion5x_init();
/* Just to be tricky, the 5182 has a completely different
* set of MPP modes to the 5181.
*/
if (dns323_dev_id() == MV88F5182_DEV_ID)
orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
else {
orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */
}
/* setup flash mapping
* CS3 holds a 8 MB Spansion S29GL064M90TFIR4
*/
orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
platform_device_register(&dns323_nor_flash);
platform_device_register(&dns323_gpio_leds);
platform_device_register(&dns323_button_device);
i2c_register_board_info(0, dns323_i2c_devices,
ARRAY_SIZE(dns323_i2c_devices));
/*
* Configure peripherals.
*/
if (dns323_read_mac_addr() < 0)
printk("DNS323: Failed to read MAC address\n");
orion5x_ehci0_init();
orion5x_eth_init(&dns323_eth_data);
orion5x_i2c_init();
orion5x_uart0_init();
/* The 5182 has it's SATA controller on-chip, and needs it's own little
* init routine.
*/
if (dns323_dev_id() == MV88F5182_DEV_ID)
orion5x_sata_init(&dns323_sata_data);
/* register dns323 specific power-off method */
if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS323: failed to setup power-off GPIO\n");
pm_power_off = dns323_power_off;
}
/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
MACHINE_START(DNS323, "D-Link DNS-323")
/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
.phys_io = ORION5X_REGS_PHYS_BASE,
.io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
.boot_params = 0x00000100,
.init_machine = dns323_init,
.map_io = orion5x_map_io,
.init_irq = orion5x_init_irq,
.timer = &orion5x_timer,
.fixup = tag_fixup_mem32,
MACHINE_END
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