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); 314