LXR linux/arch/mips/alchemy/board-mtx1.c

   1/*
   2 * MTX-1 platform devices registration (Au1500)
   3 *
   4 * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org>
   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/init.h>
  22#include <linux/interrupt.h>
  23#include <linux/kernel.h>
  24#include <linux/platform_device.h>
  25#include <linux/leds.h>
  26#include <linux/gpio.h>
  27#include <linux/gpio_keys.h>
  28#include <linux/input.h>
  29#include <linux/mtd/partitions.h>
  30#include <linux/mtd/physmap.h>
  31#include <mtd/mtd-abi.h>
  32#include <asm/bootinfo.h>
  33#include <asm/reboot.h>
  34#include <asm/mach-au1x00/au1000.h>
  35#include <asm/mach-au1x00/gpio-au1000.h>
  36#include <asm/mach-au1x00/au1xxx_eth.h>
  37#include <prom.h>
  38
  39const char *get_system_type(void)
  40{
  41        return "MTX-1";
  42}
  43
  44void __init prom_init(void)
  45{
  46        unsigned char *memsize_str;
  47        unsigned long memsize;
  48
  49        prom_argc = fw_arg0;
  50        prom_argv = (char **)fw_arg1;
  51        prom_envp = (char **)fw_arg2;
  52
  53        prom_init_cmdline();
  54
  55        memsize_str = prom_getenv("memsize");
  56        if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
  57                memsize = 0x04000000;
  58        add_memory_region(0, memsize, BOOT_MEM_RAM);
  59}
  60
  61void prom_putchar(unsigned char c)
  62{
  63        alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
  64}
  65
  66static void mtx1_reset(char *c)
  67{
  68        /* Jump to the reset vector */
  69        __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
  70}
  71
  72static void mtx1_power_off(void)
  73{
  74        while (1)
  75                asm volatile (
  76                "       .set    mips32                                  \n"
  77                "       wait                                            \n"
  78                "       .set    mips0                                   \n");
  79}
  80
  81void __init board_setup(void)
  82{
  83#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
  84        /* Enable USB power switch */
  85        alchemy_gpio_direction_output(204, 0);
  86#endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */
  87
  88        /* Initialize sys_pinfunc */
  89        alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC);
  90
  91        /* Initialize GPIO */
  92        alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR);
  93        alchemy_gpio_direction_output(0, 0);    /* Disable M66EN (PCI 66MHz) */
  94        alchemy_gpio_direction_output(3, 1);    /* Disable PCI CLKRUN# */
  95        alchemy_gpio_direction_output(1, 1);    /* Enable EXT_IO3 */
  96        alchemy_gpio_direction_output(5, 0);    /* Disable eth PHY TX_ER */
  97
  98        /* Enable LED and set it to green */
  99        alchemy_gpio_direction_output(211, 1);  /* green on */
 100        alchemy_gpio_direction_output(212, 0);  /* red off */
 101
 102        pm_power_off = mtx1_power_off;
 103        _machine_halt = mtx1_power_off;
 104        _machine_restart = mtx1_reset;
 105
 106        printk(KERN_INFO "4G Systems MTX-1 Board\n");
 107}
 108
 109/******************************************************************************/
 110
 111static struct gpio_keys_button mtx1_gpio_button[] = {
 112        {
 113                .gpio = 207,
 114                .code = BTN_0,
 115                .desc = "System button",
 116        }
 117};
 118
 119static struct gpio_keys_platform_data mtx1_buttons_data = {
 120        .buttons = mtx1_gpio_button,
 121        .nbuttons = ARRAY_SIZE(mtx1_gpio_button),
 122};
 123
 124static struct platform_device mtx1_button = {
 125        .name = "gpio-keys",
 126        .id = -1,
 127        .dev = {
 128                .platform_data = &mtx1_buttons_data,
 129        }
 130};
 131
 132static struct resource mtx1_wdt_res[] = {
 133        [0] = {
 134                .start  = 215,
 135                .end    = 215,
 136                .name   = "mtx1-wdt-gpio",
 137                .flags  = IORESOURCE_IRQ,
 138        }
 139};
 140
 141static struct platform_device mtx1_wdt = {
 142        .name = "mtx1-wdt",
 143        .id = 0,
 144        .num_resources = ARRAY_SIZE(mtx1_wdt_res),
 145        .resource = mtx1_wdt_res,
 146};
 147
 148static const struct gpio_led default_leds[] = {
 149        {
 150                .name   = "mtx1:green",
 151                .gpio = 211,
 152        }, {
 153                .name = "mtx1:red",
 154                .gpio = 212,
 155        },
 156};
 157
 158static struct gpio_led_platform_data mtx1_led_data = {
 159        .num_leds = ARRAY_SIZE(default_leds),
 160        .leds = default_leds,
 161};
 162
 163static struct platform_device mtx1_gpio_leds = {
 164        .name = "leds-gpio",
 165        .id = -1,
 166        .dev = {
 167                .platform_data = &mtx1_led_data,
 168        }
 169};
 170
 171static struct mtd_partition mtx1_mtd_partitions[] = {
 172        {
 173                .name   = "filesystem",
 174                .size   = 0x01C00000,
 175                .offset = 0,
 176        },
 177        {
 178                .name   = "yamon",
 179                .size   = 0x00100000,
 180                .offset = MTDPART_OFS_APPEND,
 181                .mask_flags = MTD_WRITEABLE,
 182        },
 183        {
 184                .name   = "kernel",
 185                .size   = 0x002c0000,
 186                .offset = MTDPART_OFS_APPEND,
 187        },
 188        {
 189                .name   = "yamon env",
 190                .size   = 0x00040000,
 191                .offset = MTDPART_OFS_APPEND,
 192        },
 193};
 194
 195static struct physmap_flash_data mtx1_flash_data = {
 196        .width          = 4,
 197        .nr_parts       = 4,
 198        .parts          = mtx1_mtd_partitions,
 199};
 200
 201static struct resource mtx1_mtd_resource = {
 202        .start  = 0x1e000000,
 203        .end    = 0x1fffffff,
 204        .flags  = IORESOURCE_MEM,
 205};
 206
 207static struct platform_device mtx1_mtd = {
 208        .name           = "physmap-flash",
 209        .dev            = {
 210                .platform_data  = &mtx1_flash_data,
 211        },
 212        .num_resources  = 1,
 213        .resource       = &mtx1_mtd_resource,
 214};
 215
 216static struct resource alchemy_pci_host_res[] = {
 217        [0] = {
 218                .start  = AU1500_PCI_PHYS_ADDR,
 219                .end    = AU1500_PCI_PHYS_ADDR + 0xfff,
 220                .flags  = IORESOURCE_MEM,
 221        },
 222};
 223
 224static int mtx1_pci_idsel(unsigned int devsel, int assert)
 225{
 226        /* This function is only necessary to support a proprietary Cardbus
 227         * adapter on the mtx-1 "singleboard" variant. It triggers a custom
 228         * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
 229         */
 230        udelay(1);
 231
 232        if (assert && devsel != 0)
 233                /* Suppress signal to Cardbus */
 234                alchemy_gpio_set_value(1, 0);   /* set EXT_IO3 OFF */
 235        else
 236                alchemy_gpio_set_value(1, 1);   /* set EXT_IO3 ON */
 237
 238        udelay(1);
 239        return 1;
 240}
 241
 242static const char mtx1_irqtab[][5] = {
 243        [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
 244        [1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
 245        [2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
 246        [3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
 247        [4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
 248        [5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
 249        [6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
 250        [7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
 251};
 252
 253static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
 254{
 255        return mtx1_irqtab[slot][pin];
 256}
 257
 258static struct alchemy_pci_platdata mtx1_pci_pd = {
 259        .board_map_irq   = mtx1_map_pci_irq,
 260        .board_pci_idsel = mtx1_pci_idsel,
 261        .pci_cfg_set     = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
 262                           PCI_CONFIG_CH |
 263#if defined(__MIPSEB__)
 264                           PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
 265#else
 266                           0,
 267#endif
 268};
 269
 270static struct platform_device mtx1_pci_host = {
 271        .dev.platform_data = &mtx1_pci_pd,
 272        .name           = "alchemy-pci",
 273        .id             = 0,
 274        .num_resources  = ARRAY_SIZE(alchemy_pci_host_res),
 275        .resource       = alchemy_pci_host_res,
 276};
 277
 278static struct platform_device *mtx1_devs[] __initdata = {
 279        &mtx1_pci_host,
 280        &mtx1_gpio_leds,
 281        &mtx1_wdt,
 282        &mtx1_button,
 283        &mtx1_mtd,
 284};
 285
 286static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
 287        .phy_search_highest_addr        = 1,
 288        .phy1_search_mac0               = 1,
 289};
 290
 291static int __init mtx1_register_devices(void)
 292{
 293        int rc;
 294
 295        irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
 296        irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
 297        irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
 298        irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
 299        irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
 300
 301        au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata);
 302
 303        rc = gpio_request(mtx1_gpio_button[0].gpio,
 304                                        mtx1_gpio_button[0].desc);
 305        if (rc < 0) {
 306                printk(KERN_INFO "mtx1: failed to request %d\n",
 307                                        mtx1_gpio_button[0].gpio);
 308                goto out;
 309        }
 310        gpio_direction_input(mtx1_gpio_button[0].gpio);
 311out:
 312        return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
 313}
 314arch_initcall(mtx1_register_devices);
 315