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>

1 files changed, 90 insertions, 0 deletions

diff --git a/arch/arm/mach-orion5x/board-mss2.c b/arch/arm/mach-orion5x/board-mss2.c
new file mode 100644
index 000000000000..66f9c3ba86cc
--- /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;
+}