87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Maxtor Shared Storage II Board Setup
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*
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* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/pci.h>
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#include <linux/irq.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/pci.h>
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#include "orion5x.h"
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#include "bridge-regs.h"
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#include "common.h"
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/*****************************************************************************
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* Maxtor Shared Storage II Info
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****************************************************************************/
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/****************************************************************************
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* PCI setup
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****************************************************************************/
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static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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int irq;
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/*
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* Check for devices with hard-wired IRQs.
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*/
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irq = orion5x_pci_map_irq(dev, slot, pin);
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if (irq != -1)
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return irq;
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return -1;
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}
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static struct hw_pci mss2_pci __initdata = {
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.nr_controllers = 2,
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.setup = orion5x_pci_sys_setup,
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.scan = orion5x_pci_sys_scan_bus,
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.map_irq = mss2_pci_map_irq,
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};
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static int __init mss2_pci_init(void)
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{
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if (machine_is_mss2())
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pci_common_init(&mss2_pci);
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return 0;
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}
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subsys_initcall(mss2_pci_init);
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/*****************************************************************************
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* MSS2 power off method
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****************************************************************************/
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/*
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* On the Maxtor Shared Storage II, the shutdown process is the following :
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* - Userland modifies U-boot env to tell U-boot to go idle at next boot
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* - The board reboots
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* - U-boot starts and go into an idle mode until the user press "power"
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*/
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static void mss2_power_off(void)
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{
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u32 reg;
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/*
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* Enable and issue soft reset
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*/
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reg = readl(RSTOUTn_MASK);
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reg |= 1 << 2;
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writel(reg, RSTOUTn_MASK);
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reg = readl(CPU_SOFT_RESET);
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reg |= 1;
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writel(reg, CPU_SOFT_RESET);
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}
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void __init mss2_init(void)
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{
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/* register mss2 specific power-off method */
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pm_power_off = mss2_power_off;
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}
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