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
  39 const char *get_system_type(void)
  40 {
  41         return "MTX-1";
  42 }
  43
  44 void __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
  61 void prom_putchar(unsigned char c)
  62 {
  63         alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
  64 }
  65
  66 static void mtx1_reset(char *c)
  67 {
  68         /* Jump to the reset vector */
  69         __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
  70 }
  71
  72 static 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
  81 void __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
 111 static struct gpio_keys_button mtx1_gpio_button[] = {
 112         {
 113                 .gpio = 207,
 114                 .code = BTN_0,
 115                 .desc = "System button",
 116         }
 117 };
 118
 119 static struct gpio_keys_platform_data mtx1_buttons_data = {
 120         .buttons = mtx1_gpio_button,
 121         .nbuttons = ARRAY_SIZE(mtx1_gpio_button),
 122 };
 123
 124 static struct platform_device mtx1_button = {
 125         .name = "gpio-keys",
 126         .id = -1,
 127         .dev = {
 128                 .platform_data = &mtx1_buttons_data,
 129         }
 130 };
 131
 132 static 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
 141 static 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
 148 static struct gpio_led default_leds[] = {
 149         {
 150                 .name   = "mtx1:green",
 151                 .gpio = 211,
 152         }, {
 153                 .name = "mtx1:red",
 154                 .gpio = 212,
 155         },
 156 };
 157
 158 static struct gpio_led_platform_data mtx1_led_data = {
 159         .num_leds = ARRAY_SIZE(default_leds),
 160         .leds = default_leds,
 161 };
 162
 163 static struct platform_device mtx1_gpio_leds = {
 164         .name = "leds-gpio",
 165         .id = -1,
 166         .dev = {
 167                 .platform_data = &mtx1_led_data,
 168         }
 169 };
 170
 171 static 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
 195 static struct physmap_flash_data mtx1_flash_data = {
 196         .width          = 4,
 197         .nr_parts       = 4,
 198         .parts          = mtx1_mtd_partitions,
 199 };
 200
 201 static struct resource mtx1_mtd_resource = {
 202         .start  = 0x1e000000,
 203         .end    = 0x1fffffff,
 204         .flags  = IORESOURCE_MEM,
 205 };
 206
 207 static 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
 216 static 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
 224 static 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
 242 static 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
 253 static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
 254 {
 255         return mtx1_irqtab[slot][pin];
 256 }
 257
 258 static 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
 270 static 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
 278 static 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
 286 static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
 287         .phy_search_highest_addr        = 1,
 288         .phy1_search_mac0               = 1,
 289 };
 290
 291 static 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);
 311 out:
 312         return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
 313 }
 314 arch_initcall(mtx1_register_devices);