/* * 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, .timer = &orion5x_timer, .fixup = tag_fixup_mem32, .restart = orion5x_restart, MACHINE_END