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/machine.h> 28 #include <linux/gpio_keys.h> 29 #include <linux/input.h> 30 #include <linux/mtd/partitions.h> 31 #include <linux/mtd/physmap.h> 32 #include <mtd/mtd-abi.h> 33 #include <asm/bootinfo.h> 34 #include <asm/reboot.h> 35 #include <asm/setup.h> 36 #include <asm/mach-au1x00/au1000.h> 37 #include <asm/mach-au1x00/gpio-au1000.h> 38 #include <asm/mach-au1x00/au1xxx_eth.h> 39 #include <prom.h> 40 41 const char *get_system_type(void) 42 { 43 return "MTX-1"; 44 } 45 46 void __init prom_init(void) 47 { 48 unsigned char *memsize_str; 49 unsigned long memsize; 50 51 prom_argc = fw_arg0; 52 prom_argv = (char **)fw_arg1; 53 prom_envp = (char **)fw_arg2; 54 55 prom_init_cmdline(); 56 57 memsize_str = prom_getenv("memsize"); 58 if (!memsize_str || kstrtoul(memsize_str, 0, &memsize)) 59 memsize = 0x04000000; 60 add_memory_region(0, memsize, BOOT_MEM_RAM); 61 } 62 63 void prom_putchar(char c) 64 { 65 alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); 66 } 67 68 static void mtx1_reset(char *c) 69 { 70 /* Jump to the reset vector */ 71 __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000)); 72 } 73 74 static void mtx1_power_off(void) 75 { 76 while (1) 77 asm volatile ( 78 " .set mips32 \n" 79 " wait \n" 80 " .set mips0 \n"); 81 } 82 83 void __init board_setup(void) 84 { 85 #if IS_ENABLED(CONFIG_USB_OHCI_HCD) 86 /* Enable USB power switch */ 87 alchemy_gpio_direction_output(204, 0); 88 #endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */ 89 90 /* Initialize sys_pinfunc */ 91 alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC); 92 93 /* Initialize GPIO */ 94 alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR); 95 alchemy_gpio_direction_output(0, 0); /* Disable M66EN (PCI 66MHz) */ 96 alchemy_gpio_direction_output(3, 1); /* Disable PCI CLKRUN# */ 97 alchemy_gpio_direction_output(1, 1); /* Enable EXT_IO3 */ 98 alchemy_gpio_direction_output(5, 0); /* Disable eth PHY TX_ER */ 99 100 /* Enable LED and set it to green */ 101 alchemy_gpio_direction_output(211, 1); /* green on */ 102 alchemy_gpio_direction_output(212, 0); /* red off */ 103 104 pm_power_off = mtx1_power_off; 105 _machine_halt = mtx1_power_off; 106 _machine_restart = mtx1_reset; 107 108 printk(KERN_INFO "4G Systems MTX-1 Board\n"); 109 } 110 111 /******************************************************************************/ 112 113 static struct gpio_keys_button mtx1_gpio_button[] = { 114 { 115 .gpio = 207, 116 .code = BTN_0, 117 .desc = "System button", 118 } 119 }; 120 121 static struct gpio_keys_platform_data mtx1_buttons_data = { 122 .buttons = mtx1_gpio_button, 123 .nbuttons = ARRAY_SIZE(mtx1_gpio_button), 124 }; 125 126 static struct platform_device mtx1_button = { 127 .name = "gpio-keys", 128 .id = -1, 129 .dev = { 130 .platform_data = &mtx1_buttons_data, 131 } 132 }; 133 134 static struct gpiod_lookup_table mtx1_wdt_gpio_table = { 135 .dev_id = "mtx1-wdt.0", 136 .table = { 137 /* Global number 215 is offset 15 on Alchemy GPIO 2 */ 138 GPIO_LOOKUP("alchemy-gpio2", 15, NULL, GPIO_ACTIVE_HIGH), 139 { }, 140 }, 141 }; 142 143 static struct platform_device mtx1_wdt = { 144 .name = "mtx1-wdt", 145 .id = 0, 146 }; 147 148 static const struct gpio_led default_leds[] = { 149 { 150 .name = "mtx1:green", 151 .gpio = 211, 152 }, { 153 .name = "mtx1:red", 154 .gpio = 212, 155 }, 156 }; 157 158 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 gpiod_add_lookup_table(&mtx1_wdt_gpio_table); 313 return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs)); 314 } 315 arch_initcall(mtx1_register_devices); 316