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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-orion5x/board-mss2.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-orion5x/board-mss2.c')
-rw-r--r--arch/arm/mach-orion5x/board-mss2.c86
1 files changed, 86 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..b0f16d223
--- /dev/null
+++ b/arch/arm/mach-orion5x/board-mss2.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Maxtor Shared Storage II Board Setup
+ *
+ * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
+ */
+
+#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;
+}