ARM: orion5x: convert Maxtor Shared Storage II to the Device Tree

This commit converts the Maxtor Shared Storage II Orion5x platform to
the Device Tree. The only remaining things not converted are PCI and
the special power off method.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: https://lkml.kernel.org/r/1398202002-28530-37-git-send-email-thomas.petazzoni@free-electrons.com
Cc: Sylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

6 files changed, 103 insertions, 277 deletions

diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index 3c4ad83c782..2412efb6cdd 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/arch/arm/mach-orion5x/Kconfig
@@ -129,8 +129,9 @@ config MACH_NET2BIG
 	  Say 'Y' here if you want your kernel to support the
 	  LaCie 2Big Network NAS.
 
-config MACH_MSS2
-	bool "Maxtor Shared Storage II"
+config MACH_MSS2_DT
+	bool "Maxtor Shared Storage II (Flattened Device Tree)"
+	select ARCH_ORION5X_DT
 	help
 	  Say 'Y' here if you want your kernel to support the
 	  Maxtor Shared Storage II platform.
diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile
index 787dcee9680..a40b5c9a58c 100644
--- a/arch/arm/mach-orion5x/Makefile
+++ b/arch/arm/mach-orion5x/Makefile
@@ -13,7 +13,6 @@ 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_NET2BIG)	+= net2big-setup.o
-obj-$(CONFIG_MACH_MSS2)		+= mss2-setup.o
 obj-$(CONFIG_MACH_WNR854T)	+= wnr854t-setup.o
 obj-$(CONFIG_MACH_RD88F5181L_GE)	+= rd88f5181l-ge-setup.o
 obj-$(CONFIG_MACH_RD88F5181L_FXO)	+= rd88f5181l-fxo-setup.o
@@ -22,4 +21,5 @@ obj-$(CONFIG_MACH_LINKSTATION_LSCHL)	+= ls-chl-setup.o
 
 obj-$(CONFIG_ARCH_ORION5X_DT)		+= board-dt.o
 obj-$(CONFIG_MACH_D2NET_DT)	+= board-d2net.o
+obj-$(CONFIG_MACH_MSS2_DT)	+= board-mss2.o
 obj-$(CONFIG_MACH_RD88F5182_DT)	+= board-rd88f5182.o
diff --git a/arch/arm/mach-orion5x/board-dt.c b/arch/arm/mach-orion5x/board-dt.c
index 78d2e528f98..35d418faf8f 100644
--- a/arch/arm/mach-orion5x/board-dt.c
+++ b/arch/arm/mach-orion5x/board-dt.c
@@ -61,6 +61,9 @@ static void __init orion5x_dt_init(void)
 		cpu_idle_poll_ctrl(true);
 	}
 
+	if (of_machine_is_compatible("maxtor,shared-storage-2"))
+		mss2_init();
+
 	of_platform_populate(NULL, of_default_bus_match_table,
 			     orion5x_auxdata_lookup, NULL);
 }
diff --git a/arch/arm/mach-orion5x/board-mss2.c b/arch/arm/mach-orion5x/board-mss2.c
new file mode 100644
index 00000000000..66f9c3ba86c
--- /dev/null
+++ b/arch/arm/mach-orion5x/board-mss2.c
@@ -0,0 +1,90 @@
+/*
+ * 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 <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/pci.h>
+#include <mach/orion5x.h>
+#include <mach/bridge-regs.h>
+#include "common.h"
+
+/*****************************************************************************
+ * Maxtor Shared Storage II Info
+ ****************************************************************************/
+
+/****************************************************************************
+ * PCI setup
+ ****************************************************************************/
+static int __init mss2_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 mss2_pci __initdata = {
+	.nr_controllers = 2,
+	.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);
+
+/*****************************************************************************
+ * 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(RSTOUTn_MASK);
+	reg |= 1 << 2;
+	writel(reg, RSTOUTn_MASK);
+
+	reg = readl(CPU_SOFT_RESET);
+	reg |= 1;
+	writel(reg, CPU_SOFT_RESET);
+}
+
+void __init mss2_init(void)
+{
+	/* register mss2 specific power-off method */
+	pm_power_off = mss2_power_off;
+}
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
index 7d64a17a394..db7e056493a 100644
--- a/arch/arm/mach-orion5x/common.h
+++ b/arch/arm/mach-orion5x/common.h
@@ -68,6 +68,12 @@ struct meminfo;
 struct tag;
 extern void __init tag_fixup_mem32(struct tag *, char **, struct meminfo *);
 
+#ifdef CONFIG_MACH_MSS2_DT
+extern void mss2_init(void);
+#else
+static inline void mss2_init(void) {}
+#endif
+
 /*****************************************************************************
  * Helpers to access Orion registers
  ****************************************************************************/
diff --git a/arch/arm/mach-orion5x/mss2-setup.c b/arch/arm/mach-orion5x/mss2-setup.c
deleted file mode 100644
index e105130ba51..00000000000
--- a/arch/arm/mach-orion5x/mss2-setup.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * 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 <mach/orion5x.h>
-#include <mach/bridge-regs.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(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 mss2_pci __initdata = {
-	.nr_controllers = 2,
-	.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	= MV643XX_ETH_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(RSTOUTn_MASK);
-	reg |= 1 << 2;
-	writel(reg, RSTOUTn_MASK);
-
-	reg = readl(CPU_SOFT_RESET);
-	reg |= 1;
-	writel(reg, CPU_SOFT_RESET);
-}
-
-/****************************************************************************
- * General Setup
- ****************************************************************************/
-static unsigned int mss2_mpp_modes[] __initdata = {
-	MPP0_GPIO,		/* Power LED */
-	MPP1_GPIO,		/* Error LED */
-	MPP2_UNUSED,
-	MPP3_GPIO,		/* RTC interrupt */
-	MPP4_GPIO,		/* HDD ind. (Single/Dual)*/
-	MPP5_GPIO,		/* HD0 5V control */
-	MPP6_GPIO,		/* HD0 12V control */
-	MPP7_GPIO,		/* HD1 5V control */
-	MPP8_GPIO,		/* HD1 12V control */
-	MPP9_UNUSED,
-	MPP10_GPIO,		/* Fan control */
-	MPP11_GPIO,		/* Power button */
-	MPP12_GPIO,		/* Reset button */
-	MPP13_UNUSED,
-	MPP14_SATA_LED,		/* SATA 0 active */
-	MPP15_SATA_LED,		/* SATA 1 active */
-	MPP16_UNUSED,
-	MPP17_UNUSED,
-	MPP18_UNUSED,
-	MPP19_UNUSED,
-	0,
-};
-
-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_xor_init();
-
-	mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
-				    ORION_MBUS_DEVBUS_BOOT_ATTR,
-				    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> */
-	.atag_offset	= 0x100,
-	.init_machine	= mss2_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