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