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linux-sg2042/arch/arm/mach-orion5x/dns323-setup.c

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/*
* arch/arm/mach-orion5x/dns323-setup.c
*
* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
*
* Support for HW Rev C1:
*
* Copyright (C) 2010 Benjamin Herrenschmidt <benh@kernel.crashing.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/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.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 <linux/phy.h>
#include <linux/marvell_phy.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <asm/system_info.h>
#include <mach/orion5x.h>
#include <plat/orion-gpio.h>
#include "common.h"
#include "mpp.h"
/* Rev A1 and B1 */
#define DNS323_GPIO_LED_RIGHT_AMBER 1
#define DNS323_GPIO_LED_LEFT_AMBER 2
#define DNS323_GPIO_SYSTEM_UP 3
#define DNS323_GPIO_LED_POWER1 4
#define DNS323_GPIO_LED_POWER2 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
/* Rev C1 */
#define DNS323C_GPIO_KEY_POWER 1
#define DNS323C_GPIO_POWER_OFF 2
#define DNS323C_GPIO_LED_RIGHT_AMBER 8
#define DNS323C_GPIO_LED_LEFT_AMBER 9
#define DNS323C_GPIO_LED_POWER 17
#define DNS323C_GPIO_FAN_BIT1 18
#define DNS323C_GPIO_FAN_BIT0 19
/* Exposed to userspace, do not change */
enum {
DNS323_REV_A1, /* 0 */
DNS323_REV_B1, /* 1 */
DNS323_REV_C1, /* 2 */
};
/****************************************************************************
* PCI setup
*/
static int __init dns323_pci_map_irq(const 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,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = dns323_pci_map_irq,
};
static int __init dns323_pci_init(void)
{
/* Rev B1 and C1 doesn't really use its PCI bus, and initialising PCI
* gets in the way of initialising the SATA controller.
*/
if (machine_is_dns323() && system_rev == DNS323_REV_A1)
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("DNS-323: 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 dns323ab_leds[] = {
{
.name = "power:blue",
.gpio = DNS323_GPIO_LED_POWER2,
.default_trigger = "default-on",
}, {
.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 dns323c_leds[] = {
{
.name = "power:blue",
.gpio = DNS323C_GPIO_LED_POWER,
.default_trigger = "timer",
.active_low = 1,
}, {
.name = "right:amber",
.gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
.active_low = 1,
}, {
.name = "left:amber",
.gpio = DNS323C_GPIO_LED_LEFT_AMBER,
.active_low = 1,
},
};
static struct gpio_led_platform_data dns323ab_led_data = {
.num_leds = ARRAY_SIZE(dns323ab_leds),
.leds = dns323ab_leds,
.gpio_blink_set = orion_gpio_led_blink_set,
};
static struct gpio_led_platform_data dns323c_led_data = {
.num_leds = ARRAY_SIZE(dns323c_leds),
.leds = dns323c_leds,
.gpio_blink_set = orion_gpio_led_blink_set,
};
static struct platform_device dns323_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &dns323ab_led_data,
},
};
/****************************************************************************
* GPIO Attached Keys
*/
static struct gpio_keys_button dns323ab_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 dns323ab_button_data = {
.buttons = dns323ab_buttons,
.nbuttons = ARRAY_SIZE(dns323ab_buttons),
};
static struct gpio_keys_button dns323c_buttons[] = {
{
.code = KEY_POWER,
.gpio = DNS323C_GPIO_KEY_POWER,
.desc = "Power Button",
.active_low = 1,
},
};
static struct gpio_keys_platform_data dns323c_button_data = {
.buttons = dns323c_buttons,
.nbuttons = ARRAY_SIZE(dns323c_buttons),
};
static struct platform_device dns323_button_device = {
.name = "gpio-keys",
.id = -1,
.num_resources = 0,
.dev = {
.platform_data = &dns323ab_button_data,
},
};
/*****************************************************************************
* SATA
*/
static struct mv_sata_platform_data dns323_sata_data = {
.n_ports = 2,
};
/****************************************************************************
* General Setup
*/
static unsigned int dns323a_mpp_modes[] __initdata = {
MPP0_PCIE_RST_OUTn,
MPP1_GPIO, /* right amber LED (sata ch0) */
MPP2_GPIO, /* left amber LED (sata ch1) */
MPP3_UNUSED,
MPP4_GPIO, /* power button LED */
MPP5_GPIO, /* power button LED */
MPP6_GPIO, /* GMT G751-2f overtemp */
MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
MPP8_GPIO, /* triggers power off */
MPP9_GPIO, /* power button switch */
MPP10_GPIO, /* reset button switch */
MPP11_UNUSED,
MPP12_UNUSED,
MPP13_UNUSED,
MPP14_UNUSED,
MPP15_UNUSED,
MPP16_UNUSED,
MPP17_UNUSED,
MPP18_UNUSED,
MPP19_UNUSED,
0,
};
static unsigned int dns323b_mpp_modes[] __initdata = {
MPP0_UNUSED,
MPP1_GPIO, /* right amber LED (sata ch0) */
MPP2_GPIO, /* left amber LED (sata ch1) */
MPP3_GPIO, /* system up flag */
MPP4_GPIO, /* power button LED */
MPP5_GPIO, /* power button LED */
MPP6_GPIO, /* GMT G751-2f overtemp */
MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
MPP8_GPIO, /* triggers power off */
MPP9_GPIO, /* power button switch */
MPP10_GPIO, /* reset button switch */
MPP11_UNUSED,
MPP12_SATA_LED,
MPP13_SATA_LED,
MPP14_SATA_LED,
MPP15_SATA_LED,
MPP16_UNUSED,
MPP17_UNUSED,
MPP18_UNUSED,
MPP19_UNUSED,
0,
};
static unsigned int dns323c_mpp_modes[] __initdata = {
MPP0_GPIO, /* ? input */
MPP1_GPIO, /* input power switch (0 = pressed) */
MPP2_GPIO, /* output power off */
MPP3_UNUSED, /* ? output */
MPP4_UNUSED, /* ? output */
MPP5_UNUSED, /* ? output */
MPP6_UNUSED, /* ? output */
MPP7_UNUSED, /* ? output */
MPP8_GPIO, /* i/o right amber LED */
MPP9_GPIO, /* i/o left amber LED */
MPP10_GPIO, /* input */
MPP11_UNUSED,
MPP12_SATA_LED,
MPP13_SATA_LED,
MPP14_SATA_LED,
MPP15_SATA_LED,
MPP16_UNUSED,
MPP17_GPIO, /* power button LED */
MPP18_GPIO, /* fan speed bit 0 */
MPP19_GPIO, /* fan speed bit 1 */
0,
};
/* Rev C1 Fan speed notes:
*
* The fan is controlled by 2 GPIOs on this board. The settings
* of the bits is as follow:
*
* GPIO 18 GPIO 19 Fan
*
* 0 0 stopped
* 0 1 low speed
* 1 0 high speed
* 1 1 don't do that (*)
*
* (*) I think the two bits control two feed-in resistors into a fixed
* PWN circuit, setting both bits will basically go a 'bit' faster
* than high speed, but d-link doesn't do it and you may get out of
* HW spec so don't do it.
*/
/*
* On the DNS-323 A1 and B1 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 dns323ab_i2c_devices[] = {
{
I2C_BOARD_INFO("g760a", 0x3e),
}, {
I2C_BOARD_INFO("lm75", 0x48),
}, {
I2C_BOARD_INFO("m41t80", 0x68),
},
};
/*
* On the DNS-323 C1 the following devices are attached via I2C:
*
* i2c addr | chip | description
* 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
* 0x68 | ST M41T80 | RTC w/ alarm
*/
static struct i2c_board_info __initdata dns323c_i2c_devices[] = {
{
I2C_BOARD_INFO("lm75", 0x48),
}, {
I2C_BOARD_INFO("m41t80", 0x68),
},
};
/* DNS-323 rev. A specific power off method */
static void dns323a_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
}
/* DNS-323 rev B specific power off method */
static void dns323b_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
/* Pin has to be changed to 1 and back to 0 to do actual power off. */
gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
mdelay(100);
gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
}
/* DNS-323 rev. C specific power off method */
static void dns323c_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
}
static int dns323c_phy_fixup(struct phy_device *phy)
{
phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
return 0;
}
static int __init dns323_identify_rev(void)
{
u32 dev, rev, i, reg;
pr_debug("DNS-323: Identifying board ... \n");
/* Rev A1 has a 5181 */
orion5x_pcie_id(&dev, &rev);
if (dev == MV88F5181_DEV_ID) {
pr_debug("DNS-323: 5181 found, board is A1\n");
return DNS323_REV_A1;
}
pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
/* Rev B1 and C1 both have 5182, let's poke at the eth PHY. This is
* a bit gross but we want to do that without links into the eth
* driver so let's poke at it directly. We default to rev B1 in
* case the accesses fail
*/
#define ETH_SMI_REG (ORION5X_ETH_VIRT_BASE + 0x2000 + 0x004)
#define SMI_BUSY 0x10000000
#define SMI_READ_VALID 0x08000000
#define SMI_OPCODE_READ 0x04000000
#define SMI_OPCODE_WRITE 0x00000000
for (i = 0; i < 1000; i++) {
reg = readl(ETH_SMI_REG);
if (!(reg & SMI_BUSY))
break;
}
if (i >= 1000) {
pr_warning("DNS-323: Timeout accessing PHY, assuming rev B1\n");
return DNS323_REV_B1;
}
writel((3 << 21) /* phy ID reg */ |
(8 << 16) /* phy addr */ |
SMI_OPCODE_READ, ETH_SMI_REG);
for (i = 0; i < 1000; i++) {
reg = readl(ETH_SMI_REG);
if (reg & SMI_READ_VALID)
break;
}
if (i >= 1000) {
pr_warning("DNS-323: Timeout reading PHY, assuming rev B1\n");
return DNS323_REV_B1;
}
pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
/* Note: the Marvell tools mask the ID with 0x3f0 before comparison
* but I don't see that making a difference here, at least with
* any known Marvell PHY ID
*/
switch(reg & 0xfff0) {
case 0x0cc0: /* MV88E1111 */
return DNS323_REV_B1;
case 0x0e10: /* MV88E1118 */
return DNS323_REV_C1;
default:
pr_warning("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
reg & 0xffff);
}
return DNS323_REV_B1;
}
static void __init dns323_init(void)
{
/* Setup basic Orion functions. Need to be called early. */
orion5x_init();
/* Identify revision */
system_rev = dns323_identify_rev();
pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
/* Just to be tricky, the 5182 has a completely different
* set of MPP modes to the 5181.
*/
switch(system_rev) {
case DNS323_REV_A1:
orion5x_mpp_conf(dns323a_mpp_modes);
writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */
break;
case DNS323_REV_B1:
orion5x_mpp_conf(dns323b_mpp_modes);
break;
case DNS323_REV_C1:
orion5x_mpp_conf(dns323c_mpp_modes);
break;
}
/* 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);
/* Sort out LEDs, Buttons and i2c devices */
switch(system_rev) {
case DNS323_REV_A1:
/* The 5181 power LED is active low and requires
* DNS323_GPIO_LED_POWER1 to also be low.
*/
dns323ab_leds[0].active_low = 1;
gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
/* Fall through */
case DNS323_REV_B1:
i2c_register_board_info(0, dns323ab_i2c_devices,
ARRAY_SIZE(dns323ab_i2c_devices));
break;
case DNS323_REV_C1:
/* Hookup LEDs & Buttons */
dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
dns323_button_device.dev.platform_data = &dns323c_button_data;
/* Hookup i2c devices and fan driver */
i2c_register_board_info(0, dns323c_i2c_devices,
ARRAY_SIZE(dns323c_i2c_devices));
platform_device_register_simple("dns323c-fan", 0, NULL, 0);
/* Register fixup for the PHY LEDs */
phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118,
MARVELL_PHY_ID_MASK,
dns323c_phy_fixup);
}
platform_device_register(&dns323_gpio_leds);
platform_device_register(&dns323_button_device);
/*
* Configure peripherals.
*/
if (dns323_read_mac_addr() < 0)
printk("DNS-323: Failed to read MAC address\n");
orion5x_ehci0_init();
orion5x_eth_init(&dns323_eth_data);
orion5x_i2c_init();
orion5x_uart0_init();
/* Remaining GPIOs */
switch(system_rev) {
case DNS323_REV_A1:
/* Poweroff GPIO */
if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
pm_power_off = dns323a_power_off;
break;
case DNS323_REV_B1:
/* 5182 built-in SATA init */
orion5x_sata_init(&dns323_sata_data);
/* The DNS323 rev B1 has flag to indicate the system is up.
* Without this flag set, power LED will flash and cannot be
* controlled via leds-gpio.
*/
if (gpio_request(DNS323_GPIO_SYSTEM_UP, "SYS_READY") == 0)
gpio_direction_output(DNS323_GPIO_SYSTEM_UP, 1);
/* Poweroff GPIO */
if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
pm_power_off = dns323b_power_off;
break;
case DNS323_REV_C1:
/* 5182 built-in SATA init */
orion5x_sata_init(&dns323_sata_data);
/* Poweroff GPIO */
if (gpio_request(DNS323C_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323C_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
pm_power_off = dns323c_power_off;
/* Now, -this- should theorically be done by the sata_mv driver
* once I figure out what's going on there. Maybe the behaviour
* of the LEDs should be somewhat passed via the platform_data.
* for now, just whack the register and make the LEDs happy
*
* Note: AFAIK, rev B1 needs the same treatement but I'll let
* somebody else test it.
*/
writel(0x5, ORION5X_SATA_VIRT_BASE + 0x2c);
break;
}
}
/* 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> */
.atag_offset = 0x100,
.init_machine = dns323_init,
.map_io = orion5x_map_io,
.init_early = orion5x_init_early,
.init_irq = orion5x_init_irq,
.init_time = orion5x_timer_init,
.fixup = tag_fixup_mem32,
.restart = orion5x_restart,
MACHINE_END
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