1 /* 2 * Maxtor Shared Storage II Board Setup 3 * 4 * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12 #include <linux/kernel.h> 13 #include <linux/init.h> 14 #include <linux/platform_device.h> 15 #include <linux/pci.h> 16 #include <linux/irq.h> 17 #include <asm/mach-types.h> 18 #include <asm/mach/arch.h> 19 #include <asm/mach/pci.h> 20 #include "orion5x.h" 21 #include "bridge-regs.h" 22 #include "common.h" 23 24 /***************************************************************************** 25 * Maxtor Shared Storage II Info 26 ****************************************************************************/ 27 28 /**************************************************************************** 29 * PCI setup 30 ****************************************************************************/ 31 static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) 32 { 33 int irq; 34 35 /* 36 * Check for devices with hard-wired IRQs. 37 */ 38 irq = orion5x_pci_map_irq(dev, slot, pin); 39 if (irq != -1) 40 return irq; 41 42 return -1; 43 } 44 45 static struct hw_pci mss2_pci __initdata = { 46 .nr_controllers = 2, 47 .setup = orion5x_pci_sys_setup, 48 .scan = orion5x_pci_sys_scan_bus, 49 .map_irq = mss2_pci_map_irq, 50 }; 51 52 static int __init mss2_pci_init(void) 53 { 54 if (machine_is_mss2()) 55 pci_common_init(&mss2_pci); 56 57 return 0; 58 } 59 subsys_initcall(mss2_pci_init); 60 61 /***************************************************************************** 62 * MSS2 power off method 63 ****************************************************************************/ 64 /* 65 * On the Maxtor Shared Storage II, the shutdown process is the following : 66 * - Userland modifies U-boot env to tell U-boot to go idle at next boot 67 * - The board reboots 68 * - U-boot starts and go into an idle mode until the user press "power" 69 */ 70 static void mss2_power_off(void) 71 { 72 u32 reg; 73 74 /* 75 * Enable and issue soft reset 76 */ 77 reg = readl(RSTOUTn_MASK); 78 reg |= 1 << 2; 79 writel(reg, RSTOUTn_MASK); 80 81 reg = readl(CPU_SOFT_RESET); 82 reg |= 1; 83 writel(reg, CPU_SOFT_RESET); 84 } 85 86 void __init mss2_init(void) 87 { 88 /* register mss2 specific power-off method */ 89 pm_power_off = mss2_power_off; 90 } 91