[ARM] Orion: add support for Orion/MV88F5181 based D-Link DNS-323

With this patch USB, SATA (via sata_mv), Ethernet, RTC, LEDs and NOR Flash
work.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Acked-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 330 insertions, 0 deletions

diff --git a/arch/arm/mach-orion/Kconfig b/arch/arm/mach-orion/Kconfig
index dc929511837f..bdaed867e450 100644
--- a/arch/arm/mach-orion/Kconfig
+++ b/arch/arm/mach-orion/Kconfig
@@ -23,6 +23,13 @@ config MACH_KUROBOX_PRO
           Say 'Y' here if you want your kernel to support the
           KuroBox Pro platform.
 
+config MACH_DNS323
+        bool "D-Link DNS-323"
+        select I2C_BOARDINFO
+        help
+          Say 'Y' here if you want your kernel to support the
+          D-Link DNS-323 platform.
+
 endmenu
 
 endif
diff --git a/arch/arm/mach-orion/Makefile b/arch/arm/mach-orion/Makefile
index caf20ff921d8..237ce98ad0ef 100644
--- a/arch/arm/mach-orion/Makefile
+++ b/arch/arm/mach-orion/Makefile
@@ -2,3 +2,4 @@ obj-y				+= common.o addr-map.o pci.o gpio.o irq.o time.o
 obj-$(CONFIG_MACH_DB88F5281)    += db88f5281-setup.o
 obj-$(CONFIG_MACH_RD88F5182)    += rd88f5182-setup.o
 obj-$(CONFIG_MACH_KUROBOX_PRO)  += kurobox_pro-setup.o
+obj-$(CONFIG_MACH_DNS323)       += dns323-setup.o
diff --git a/arch/arm/mach-orion/dns323-setup.c b/arch/arm/mach-orion/dns323-setup.c
new file mode 100644
index 000000000000..c8a806f249c6
--- /dev/null
+++ b/arch/arm/mach-orion/dns323-setup.c
@@ -0,0 +1,322 @@
+/*
+ * arch/arm/mach-orion/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 <asm/mach-types.h>
+#include <asm/gpio.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/pci.h>
+#include <asm/arch/orion.h>
+#include <asm/arch/platform.h>
+#include "common.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)
+{
+        /* PCI-E */
+        if (dev->bus->number == orion_pcie_local_bus_nr())
+                return IRQ_ORION_PCIE0_INT;
+
+        pr_err("%s: requested mapping for unknown bus\n", __func__);
+
+        return -1;
+}
+
+static struct hw_pci dns323_pci __initdata = {
+        .nr_controllers = 1,
+        .swizzle        = pci_std_swizzle,
+        .setup          = orion_pci_sys_setup,
+        .scan           = orion_pci_sys_scan_bus,
+        .map_irq        = dns323_pci_map_irq,
+};
+
+static int __init dns323_pci_init(void)
+{
+        if (machine_is_dns323())
+                pci_common_init(&dns323_pci);
+
+        return 0;
+}
+
+subsys_initcall(dns323_pci_init);
+
+/****************************************************************************
+ * Ethernet
+ */
+
+static struct mv643xx_eth_platform_data dns323_eth_data = {
+        .phy_addr = 8,
+        .force_phy_addr = 1,
+};
+
+/****************************************************************************
+ * 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,
+};
+
+/****************************************************************************
+ * 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, },
+};
+
+/****************************************************************************
+ * General Setup
+ */
+
+static struct platform_device *dns323_plat_devices[] __initdata = {
+        &dns323_nor_flash,
+        &dns323_gpio_leds,
+        &dns323_button_device,
+};
+
+/*
+ * 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),
+                .type = "g760a",
+        },
+#if 0
+        /* this entry requires the new-style driver model lm75 driver,
+         * for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
+        {
+                I2C_BOARD_INFO("lm75", 0x48),
+                .type = "g751",
+        },
+#endif
+        {
+                I2C_BOARD_INFO("rtc-m41t80", 0x68),
+                .type = "m41t80",
+        }
+};
+
+/* 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. */
+        orion_init();
+
+        /* setup flash mapping
+         * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
+         */
+        orion_setup_cpu_win(ORION_DEV_BOOT, DNS323_NOR_BOOT_BASE,
+                            DNS323_NOR_BOOT_SIZE, -1);
+
+        /* DNS-323 has a Marvell 88X7042 SATA controller attached via PCIE
+         *
+         * Open a special address decode windows for the PCIE WA.
+         */
+        orion_write(ORION_REGS_BASE | 0x20074, ORION_PCIE_WA_BASE);
+        orion_write(ORION_REGS_BASE | 0x20070,
+                    (0x7941 | (((ORION_PCIE_WA_SIZE >> 16) - 1)) << 16));
+
+        /* set MPP to 0 as D-Link's 2.6.12.6 kernel did */
+        orion_write(MPP_0_7_CTRL, 0);
+        orion_write(MPP_8_15_CTRL, 0);
+        orion_write(MPP_16_19_CTRL, 0);
+        orion_write(MPP_DEV_CTRL, 0);
+
+        /* Define used GPIO pins
+
+          GPIO Map:
+
+          |  0 |     | PEX_RST_OUT (not controlled by GPIO)
+          |  1 | Out | right amber LED (= sata ch0 LED)  (low-active)
+          |  2 | Out | left  amber LED (= sata ch1 LED)  (low-active)
+          |  3 | Out | //unknown//
+          |  4 | Out | power button LED (low-active, together with pin #5)
+          |  5 | Out | power button LED (low-active, together with pin #4)
+          |  6 | In  | GMT G751-2f overtemp. shutdown signal (low-active)
+          |  7 | In  | M41T80 nIRQ/OUT/SQW signal
+          |  8 | Out | triggers power off (high-active)
+          |  9 | In  | power button switch (low-active)
+          | 10 | In  | reset button switch (low-active)
+          | 11 | Out | //unknown//
+          | 12 | Out | //unknown//
+          | 13 | Out | //unknown//
+          | 14 | Out | //unknown//
+          | 15 | Out | //unknown//
+        */
+        orion_gpio_set_valid_pins(0x07f6);
+
+        /* 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;
+
+        /* register flash and other platform devices */
+        platform_add_devices(dns323_plat_devices,
+                             ARRAY_SIZE(dns323_plat_devices));
+
+        i2c_register_board_info(0, dns323_i2c_devices,
+                                ARRAY_SIZE(dns323_i2c_devices));
+
+        orion_eth_init(&dns323_eth_data);
+}
+
+/* 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        = ORION_REGS_BASE,
+        .io_pg_offst    = ((ORION_REGS_BASE) >> 18) & 0xFFFC,
+        .boot_params    = 0x00000100,
+        .init_machine   = dns323_init,
+        .map_io         = orion_map_io,
+        .init_irq       = orion_init_irq,
+        .timer          = &orion_timer,
+MACHINE_END