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

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * MTX-1 platform devices registration (Au1500)
   4 *
   5 * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org>
   6 */
   7
   8#include <linux/init.h>
   9#include <linux/interrupt.h>
  10#include <linux/kernel.h>
  11#include <linux/platform_device.h>
  12#include <linux/leds.h>
  13#include <linux/gpio.h>
  14#include <linux/gpio/machine.h>
  15#include <linux/gpio_keys.h>
  16#include <linux/input.h>
  17#include <linux/mtd/partitions.h>
  18#include <linux/mtd/physmap.h>
  19#include <mtd/mtd-abi.h>
  20#include <asm/bootinfo.h>
  21#include <asm/reboot.h>
  22#include <asm/setup.h>
  23#include <asm/mach-au1x00/au1000.h>
  24#include <asm/mach-au1x00/gpio-au1000.h>
  25#include <asm/mach-au1x00/au1xxx_eth.h>
  26#include <prom.h>
  27
  28const char *get_system_type(void)
  29{
  30        return "MTX-1";
  31}
  32
  33void __init prom_init(void)
  34{
  35        unsigned char *memsize_str;
  36        unsigned long memsize;
  37
  38        prom_argc = fw_arg0;
  39        prom_argv = (char **)fw_arg1;
  40        prom_envp = (char **)fw_arg2;
  41
  42        prom_init_cmdline();
  43
  44        memsize_str = prom_getenv("memsize");
  45        if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
  46                memsize = 0x04000000;
  47        add_memory_region(0, memsize, BOOT_MEM_RAM);
  48}
  49
  50void prom_putchar(char c)
  51{
  52        alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
  53}
  54
  55static void mtx1_reset(char *c)
  56{
  57        /* Jump to the reset vector */
  58        __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
  59}
  60
  61static void mtx1_power_off(void)
  62{
  63        while (1)
  64                asm volatile (
  65                "       .set    mips32                                  \n"
  66                "       wait                                            \n"
  67                "       .set    mips0                                   \n");
  68}
  69
  70void __init board_setup(void)
  71{
  72#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
  73        /* Enable USB power switch */
  74        alchemy_gpio_direction_output(204, 0);
  75#endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */
  76
  77        /* Initialize sys_pinfunc */
  78        alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC);
  79
  80        /* Initialize GPIO */
  81        alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR);
  82        alchemy_gpio_direction_output(0, 0);    /* Disable M66EN (PCI 66MHz) */
  83        alchemy_gpio_direction_output(3, 1);    /* Disable PCI CLKRUN# */
  84        alchemy_gpio_direction_output(1, 1);    /* Enable EXT_IO3 */
  85        alchemy_gpio_direction_output(5, 0);    /* Disable eth PHY TX_ER */
  86
  87        /* Enable LED and set it to green */
  88        alchemy_gpio_direction_output(211, 1);  /* green on */
  89        alchemy_gpio_direction_output(212, 0);  /* red off */
  90
  91        pm_power_off = mtx1_power_off;
  92        _machine_halt = mtx1_power_off;
  93        _machine_restart = mtx1_reset;
  94
  95        printk(KERN_INFO "4G Systems MTX-1 Board\n");
  96}
  97
  98/******************************************************************************/
  99
 100static struct gpio_keys_button mtx1_gpio_button[] = {
 101        {
 102                .gpio = 207,
 103                .code = BTN_0,
 104                .desc = "System button",
 105        }
 106};
 107
 108static struct gpio_keys_platform_data mtx1_buttons_data = {
 109        .buttons = mtx1_gpio_button,
 110        .nbuttons = ARRAY_SIZE(mtx1_gpio_button),
 111};
 112
 113static struct platform_device mtx1_button = {
 114        .name = "gpio-keys",
 115        .id = -1,
 116        .dev = {
 117                .platform_data = &mtx1_buttons_data,
 118        }
 119};
 120
 121static struct gpiod_lookup_table mtx1_wdt_gpio_table = {
 122        .dev_id = "mtx1-wdt.0",
 123        .table = {
 124                /* Global number 215 is offset 15 on Alchemy GPIO 2 */
 125                GPIO_LOOKUP("alchemy-gpio2", 15, NULL, GPIO_ACTIVE_HIGH),
 126                { },
 127        },
 128};
 129
 130static struct platform_device mtx1_wdt = {
 131        .name = "mtx1-wdt",
 132        .id = 0,
 133};
 134
 135static const struct gpio_led default_leds[] = {
 136        {
 137                .name   = "mtx1:green",
 138                .gpio = 211,
 139        }, {
 140                .name = "mtx1:red",
 141                .gpio = 212,
 142        },
 143};
 144
 145static struct gpio_led_platform_data mtx1_led_data = {
 146        .num_leds = ARRAY_SIZE(default_leds),
 147        .leds = default_leds,
 148};
 149
 150static struct platform_device mtx1_gpio_leds = {
 151        .name = "leds-gpio",
 152        .id = -1,
 153        .dev = {
 154                .platform_data = &mtx1_led_data,
 155        }
 156};
 157
 158static struct mtd_partition mtx1_mtd_partitions[] = {
 159        {
 160                .name   = "filesystem",
 161                .size   = 0x01C00000,
 162                .offset = 0,
 163        },
 164        {
 165                .name   = "yamon",
 166                .size   = 0x00100000,
 167                .offset = MTDPART_OFS_APPEND,
 168                .mask_flags = MTD_WRITEABLE,
 169        },
 170        {
 171                .name   = "kernel",
 172                .size   = 0x002c0000,
 173                .offset = MTDPART_OFS_APPEND,
 174        },
 175        {
 176                .name   = "yamon env",
 177                .size   = 0x00040000,
 178                .offset = MTDPART_OFS_APPEND,
 179        },
 180};
 181
 182static struct physmap_flash_data mtx1_flash_data = {
 183        .width          = 4,
 184        .nr_parts       = 4,
 185        .parts          = mtx1_mtd_partitions,
 186};
 187
 188static struct resource mtx1_mtd_resource = {
 189        .start  = 0x1e000000,
 190        .end    = 0x1fffffff,
 191        .flags  = IORESOURCE_MEM,
 192};
 193
 194static struct platform_device mtx1_mtd = {
 195        .name           = "physmap-flash",
 196        .dev            = {
 197                .platform_data  = &mtx1_flash_data,
 198        },
 199        .num_resources  = 1,
 200        .resource       = &mtx1_mtd_resource,
 201};
 202
 203static struct resource alchemy_pci_host_res[] = {
 204        [0] = {
 205                .start  = AU1500_PCI_PHYS_ADDR,
 206                .end    = AU1500_PCI_PHYS_ADDR + 0xfff,
 207                .flags  = IORESOURCE_MEM,
 208        },
 209};
 210
 211static int mtx1_pci_idsel(unsigned int devsel, int assert)
 212{
 213        /* This function is only necessary to support a proprietary Cardbus
 214         * adapter on the mtx-1 "singleboard" variant. It triggers a custom
 215         * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
 216         */
 217        udelay(1);
 218
 219        if (assert && devsel != 0)
 220                /* Suppress signal to Cardbus */
 221                alchemy_gpio_set_value(1, 0);   /* set EXT_IO3 OFF */
 222        else
 223                alchemy_gpio_set_value(1, 1);   /* set EXT_IO3 ON */
 224
 225        udelay(1);
 226        return 1;
 227}
 228
 229static const char mtx1_irqtab[][5] = {
 230        [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
 231        [1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
 232        [2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
 233        [3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
 234        [4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
 235        [5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
 236        [6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
 237        [7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
 238};
 239
 240static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
 241{
 242        return mtx1_irqtab[slot][pin];
 243}
 244
 245static struct alchemy_pci_platdata mtx1_pci_pd = {
 246        .board_map_irq   = mtx1_map_pci_irq,
 247        .board_pci_idsel = mtx1_pci_idsel,
 248        .pci_cfg_set     = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
 249                           PCI_CONFIG_CH |
 250#if defined(__MIPSEB__)
 251                           PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
 252#else
 253                           0,
 254#endif
 255};
 256
 257static struct platform_device mtx1_pci_host = {
 258        .dev.platform_data = &mtx1_pci_pd,
 259        .name           = "alchemy-pci",
 260        .id             = 0,
 261        .num_resources  = ARRAY_SIZE(alchemy_pci_host_res),
 262        .resource       = alchemy_pci_host_res,
 263};
 264
 265static struct platform_device *mtx1_devs[] __initdata = {
 266        &mtx1_pci_host,
 267        &mtx1_gpio_leds,
 268        &mtx1_wdt,
 269        &mtx1_button,
 270        &mtx1_mtd,
 271};
 272
 273static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
 274        .phy_search_highest_addr        = 1,
 275        .phy1_search_mac0               = 1,
 276};
 277
 278static int __init mtx1_register_devices(void)
 279{
 280        int rc;
 281
 282        irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
 283        irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
 284        irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
 285        irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
 286        irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
 287
 288        au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata);
 289
 290        rc = gpio_request(mtx1_gpio_button[0].gpio,
 291                                        mtx1_gpio_button[0].desc);
 292        if (rc < 0) {
 293                printk(KERN_INFO "mtx1: failed to request %d\n",
 294                                        mtx1_gpio_button[0].gpio);
 295                goto out;
 296        }
 297        gpio_direction_input(mtx1_gpio_button[0].gpio);
 298out:
 299        gpiod_add_lookup_table(&mtx1_wdt_gpio_table);
 300        return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
 301}
 302arch_initcall(mtx1_register_devices);
 303