arch/mips/alchemy/devboards/pb1550/platform.c

   1 /*
   2  * Pb1550 board platform device registration
   3  *
   4  * Copyright (C) 2009 Manuel Lauss
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/dma-mapping.h>
  22 #include <linux/init.h>
  23 #include <linux/platform_device.h>
  24 #include <asm/mach-au1x00/au1000.h>
  25 #include <asm/mach-au1x00/au1xxx_dbdma.h>
  26 #include <asm/mach-pb1x00/pb1550.h>
  27 #include <asm/mach-db1x00/bcsr.h>
  28
  29 #include "../platform.h"
  30
  31 static int pb1550_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
  32 {
  33         if ((slot < 12) || (slot > 13) || pin == 0)
  34                 return -1;
  35         if (slot == 12) {
  36                 switch (pin) {
  37                 case 1: return AU1500_PCI_INTB;
  38                 case 2: return AU1500_PCI_INTC;
  39                 case 3: return AU1500_PCI_INTD;
  40                 case 4: return AU1500_PCI_INTA;
  41                 }
  42         }
  43         if (slot == 13) {
  44                 switch (pin) {
  45                 case 1: return AU1500_PCI_INTA;
  46                 case 2: return AU1500_PCI_INTB;
  47                 case 3: return AU1500_PCI_INTC;
  48                 case 4: return AU1500_PCI_INTD;
  49                 }
  50         }
  51         return -1;
  52 }
  53
  54 static struct resource alchemy_pci_host_res[] = {
  55         [0] = {
  56                 .start  = AU1500_PCI_PHYS_ADDR,
  57                 .end    = AU1500_PCI_PHYS_ADDR + 0xfff,
  58                 .flags  = IORESOURCE_MEM,
  59         },
  60 };
  61
  62 static struct alchemy_pci_platdata pb1550_pci_pd = {
  63         .board_map_irq  = pb1550_map_pci_irq,
  64 };
  65
  66 static struct platform_device pb1550_pci_host = {
  67         .dev.platform_data = &pb1550_pci_pd,
  68         .name           = "alchemy-pci",
  69         .id             = 0,
  70         .num_resources  = ARRAY_SIZE(alchemy_pci_host_res),
  71         .resource       = alchemy_pci_host_res,
  72 };
  73
  74 static struct resource au1550_psc2_res[] = {
  75         [0] = {
  76                 .start  = AU1550_PSC2_PHYS_ADDR,
  77                 .end    = AU1550_PSC2_PHYS_ADDR + 0xfff,
  78                 .flags  = IORESOURCE_MEM,
  79         },
  80         [1] = {
  81                 .start  = AU1550_PSC2_INT,
  82                 .end    = AU1550_PSC2_INT,
  83                 .flags  = IORESOURCE_IRQ,
  84         },
  85         [2] = {
  86                 .start  = AU1550_DSCR_CMD0_PSC2_TX,
  87                 .end    = AU1550_DSCR_CMD0_PSC2_TX,
  88                 .flags  = IORESOURCE_DMA,
  89         },
  90         [3] = {
  91                 .start  = AU1550_DSCR_CMD0_PSC2_RX,
  92                 .end    = AU1550_DSCR_CMD0_PSC2_RX,
  93                 .flags  = IORESOURCE_DMA,
  94         },
  95 };
  96
  97 static struct platform_device pb1550_i2c_dev = {
  98         .name           = "au1xpsc_smbus",
  99         .id             = 0,    /* bus number */
 100         .num_resources  = ARRAY_SIZE(au1550_psc2_res),
 101         .resource       = au1550_psc2_res,
 102 };
 103
 104 static int __init pb1550_dev_init(void)
 105 {
 106         int swapped;
 107
 108         /* Pb1550, like all others, also has statuschange irqs; however they're
 109         * wired up on one of the Au1550's shared GPIO201_205 line, which also
 110         * services the PCMCIA card interrupts.  So we ignore statuschange and
 111         * use the GPIO201_205 exclusively for card interrupts, since a) pcmcia
 112         * drivers are used to shared irqs and b) statuschange isn't really use-
 113         * ful anyway.
 114         */
 115         db1x_register_pcmcia_socket(
 116                 AU1000_PCMCIA_ATTR_PHYS_ADDR,
 117                 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
 118                 AU1000_PCMCIA_MEM_PHYS_ADDR,
 119                 AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
 120                 AU1000_PCMCIA_IO_PHYS_ADDR,
 121                 AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
 122                 AU1550_GPIO201_205_INT, AU1550_GPIO0_INT, 0, 0, 0);
 123
 124         db1x_register_pcmcia_socket(
 125                 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x008000000,
 126                 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x008400000 - 1,
 127                 AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x008000000,
 128                 AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x008400000 - 1,
 129                 AU1000_PCMCIA_IO_PHYS_ADDR   + 0x008000000,
 130                 AU1000_PCMCIA_IO_PHYS_ADDR   + 0x008010000 - 1,
 131                 AU1550_GPIO201_205_INT, AU1550_GPIO1_INT, 0, 0, 1);
 132
 133         swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_PB1550_SWAPBOOT;
 134         db1x_register_norflash(128 * 1024 * 1024, 4, swapped);
 135         platform_device_register(&pb1550_pci_host);
 136         platform_device_register(&pb1550_i2c_dev);
 137
 138         return 0;
 139 }
 140 arch_initcall(pb1550_dev_init);