[ARM] Orion: add Maxtor Shared Storage II support

This patch adds support for the Maxtor Shared Storage II hardware.
Signed-off-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>

arch/arm/mach-orion5x/Kconfig

@@ -68,6 +68,12 @@ config MACH_MV2120
 	  Say 'Y' here if you want your kernel to support the
 	  HP Media Vault mv2120 or mv5100.
 
+config MACH_MSS2
+	bool "Maxtor Shared Storage II"
+	help
+	  Say 'Y' here if you want your kernel to support the
+	  Maxtor Shared Storage II platform.
+
 endmenu
 
 endif

arch/arm/mach-orion5x/Makefile

@@ -9,3 +9,4 @@ obj-$(CONFIG_MACH_TS409)	+= ts409-setup.o tsx09-common.o
 obj-$(CONFIG_MACH_WRT350N_V2)	+= wrt350n-v2-setup.o
 obj-$(CONFIG_MACH_TS78XX)	+= ts78xx-setup.o
 obj-$(CONFIG_MACH_MV2120)	+= mv2120-setup.o
+obj-$(CONFIG_MACH_MSS2)		+= mss2-setup.o

arch/arm/mach-orion5x/mss2-setup.c

+/*
+ * Maxtor Shared Storage II Board Setup
+ *
+ * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU 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 <linux/gpio.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/pci.h>
+#include <asm/arch/orion5x.h>
+#include "common.h"
+#include "mpp.h"
+
+#define MSS2_NOR_BOOT_BASE	0xff800000
+#define MSS2_NOR_BOOT_SIZE	SZ_256K
+
+/*****************************************************************************
+ * Maxtor Shared Storage II Info
+ ****************************************************************************/
+
+/*
+ * Maxtor Shared Storage II hardware :
+ * - Marvell 88F5182-A2 C500
+ * - Marvell 88E1111 Gigabit Ethernet PHY
+ * - RTC M41T81 (@0x68) on I2C bus
+ * - 256KB NOR flash
+ * - 64MB of RAM
+ */
+
+/*****************************************************************************
+ * 256KB NOR Flash on BOOT Device
+ ****************************************************************************/
+
+static struct physmap_flash_data mss2_nor_flash_data = {
+	.width		= 1,
+};
+
+static struct resource mss2_nor_flash_resource = {
+	.flags		= IORESOURCE_MEM,
+	.start		= MSS2_NOR_BOOT_BASE,
+	.end		= MSS2_NOR_BOOT_BASE + MSS2_NOR_BOOT_SIZE - 1,
+};
+
+static struct platform_device mss2_nor_flash = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &mss2_nor_flash_data,
+	},
+	.resource	= &mss2_nor_flash_resource,
+	.num_resources	= 1,
+};
+
+/****************************************************************************
+ * PCI setup
+ ****************************************************************************/
+static int __init mss2_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 mss2_pci __initdata = {
+	.nr_controllers = 2,
+	.swizzle	= pci_std_swizzle,
+	.setup		= orion5x_pci_sys_setup,
+	.scan		= orion5x_pci_sys_scan_bus,
+	.map_irq	= mss2_pci_map_irq,
+};
+
+static int __init mss2_pci_init(void)
+{
+	if (machine_is_mss2())
+		pci_common_init(&mss2_pci);
+
+	return 0;
+}
+subsys_initcall(mss2_pci_init);
+
+
+/*****************************************************************************
+ * Ethernet
+ ****************************************************************************/
+
+static struct mv643xx_eth_platform_data mss2_eth_data = {
+	.phy_addr	= 8,
+};
+
+/*****************************************************************************
+ * SATA
+ ****************************************************************************/
+
+static struct mv_sata_platform_data mss2_sata_data = {
+	.n_ports	= 2,
+};
+
+/*****************************************************************************
+ * GPIO buttons
+ ****************************************************************************/
+
+#define MSS2_GPIO_KEY_RESET	12
+#define MSS2_GPIO_KEY_POWER	11
+
+static struct gpio_keys_button mss2_buttons[] = {
+	{
+		.code		= KEY_POWER,
+		.gpio		= MSS2_GPIO_KEY_POWER,
+		.desc		= "Power",
+		.active_low	= 1,
+	}, {
+		.code		= KEY_RESTART,
+		.gpio		= MSS2_GPIO_KEY_RESET,
+		.desc		= "Reset",
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_platform_data mss2_button_data = {
+	.buttons	= mss2_buttons,
+	.nbuttons	= ARRAY_SIZE(mss2_buttons),
+};
+
+static struct platform_device mss2_button_device = {
+	.name		= "gpio-keys",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &mss2_button_data,
+	},
+};
+
+/*****************************************************************************
+ * RTC m41t81 on I2C bus
+ ****************************************************************************/
+
+#define MSS2_GPIO_RTC_IRQ	3
+
+static struct i2c_board_info __initdata mss2_i2c_rtc = {
+	I2C_BOARD_INFO("m41t81", 0x68),
+};
+
+/*****************************************************************************
+ * MSS2 power off method
+ ****************************************************************************/
+/*
+ * On the Maxtor Shared Storage II, the shutdown process is the following :
+ * - Userland modifies U-boot env to tell U-boot to go idle at next boot
+ * - The board reboots
+ * - U-boot starts and go into an idle mode until the user press "power"
+ */
+static void mss2_power_off(void)
+{
+	u32 reg;
+
+	/*
+	 * Enable and issue soft reset
+	 */
+	reg = readl(CPU_RESET_MASK);
+	reg |= 1 << 2;
+	writel(reg, CPU_RESET_MASK);
+
+	reg = readl(CPU_SOFT_RESET);
+	reg |= 1;
+	writel(reg, CPU_SOFT_RESET);
+}
+
+/****************************************************************************
+ * General Setup
+ ****************************************************************************/
+static struct orion5x_mpp_mode mss2_mpp_modes[] __initdata = {
+	{  0, MPP_GPIO },		/* Power LED */
+	{  1, MPP_GPIO },		/* Error LED */
+	{  2, MPP_UNUSED },
+	{  3, MPP_GPIO },		/* RTC interrupt */
+	{  4, MPP_GPIO },		/* HDD ind. (Single/Dual)*/
+	{  5, MPP_GPIO },		/* HD0 5V control */
+	{  6, MPP_GPIO },		/* HD0 12V control */
+	{  7, MPP_GPIO },		/* HD1 5V control */
+	{  8, MPP_GPIO },		/* HD1 12V control */
+	{  9, MPP_UNUSED },
+	{ 10, MPP_GPIO },		/* Fan control */
+	{ 11, MPP_GPIO },		/* Power button */
+	{ 12, MPP_GPIO },		/* Reset button */
+	{ 13, MPP_UNUSED },
+	{ 14, MPP_SATA_LED },		/* SATA 0 active */
+	{ 15, MPP_SATA_LED },		/* SATA 1 active */
+	{ 16, MPP_UNUSED },
+	{ 17, MPP_UNUSED },
+	{ 18, MPP_UNUSED },
+	{ 19, MPP_UNUSED },
+	{ -1 },
+};
+
+static void __init mss2_init(void)
+{
+	/* Setup basic Orion functions. Need to be called early. */
+	orion5x_init();
+
+	orion5x_mpp_conf(mss2_mpp_modes);
+
+	/*
+	 * MPP[20] Unused
+	 * MPP[21] PCI clock
+	 * MPP[22] USB 0 over current
+	 * MPP[23] USB 1 over current
+	 */
+
+	/*
+	 * Configure peripherals.
+	 */
+	orion5x_ehci0_init();
+	orion5x_ehci1_init();
+	orion5x_eth_init(&mss2_eth_data);
+	orion5x_i2c_init();
+	orion5x_sata_init(&mss2_sata_data);
+	orion5x_uart0_init();
+
+	orion5x_setup_dev_boot_win(MSS2_NOR_BOOT_BASE, MSS2_NOR_BOOT_SIZE);
+	platform_device_register(&mss2_nor_flash);
+
+	platform_device_register(&mss2_button_device);
+
+	if (gpio_request(MSS2_GPIO_RTC_IRQ, "rtc") == 0) {
+		if (gpio_direction_input(MSS2_GPIO_RTC_IRQ) == 0)
+			mss2_i2c_rtc.irq = gpio_to_irq(MSS2_GPIO_RTC_IRQ);
+		else
+			gpio_free(MSS2_GPIO_RTC_IRQ);
+	}
+	i2c_register_board_info(0, &mss2_i2c_rtc, 1);
+
+	/* register mss2 specific power-off method */
+	pm_power_off = mss2_power_off;
+}
+
+MACHINE_START(MSS2, "Maxtor Shared Storage II")
+	/* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */
+	.phys_io	= ORION5X_REGS_PHYS_BASE,
+	.io_pg_offst	= ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
+	.boot_params	= 0x00000100,
+	.init_machine	= mss2_init,
+	.map_io		= orion5x_map_io,
+	.init_irq	= orion5x_init_irq,
+	.timer		= &orion5x_timer,
+	.fixup		= tag_fixup_mem32
+MACHINE_END