Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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 000000000..79202fd62
--- /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 "orion5x.h"
+#include "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;
+}