[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>

3 files changed, 277 insertions, 0 deletions

diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index 8609f811bd84..f8b91ea3eb73 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/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
diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile
index d0c9f570f943..65b2fc6a3552 100644
--- a/arch/arm/mach-orion5x/Makefile
+++ b/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
diff --git a/arch/arm/mach-orion5x/mss2-setup.c b/arch/arm/mach-orion5x/mss2-setup.c
new file mode 100644
index 000000000000..7ce9e407d9d1
--- /dev/null
+++ b/arch/arm/mach-orion5x/mss2-setup.c
@@ -0,0 +1,270 @@
+/*
+ * 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