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/setup.h> 35 #include <asm/mach-au1x00/au1000.h> 36 #include <asm/mach-au1x00/gpio-au1000.h> 37 #include <asm/mach-au1x00/au1xxx_eth.h> 38 #include <prom.h> 39 40 const char *get_system_type(void) 41 { 42 return "MTX-1"; 43 } 44 45 void __init prom_init(void) 46 { 47 unsigned char *memsize_str; 48 unsigned long memsize; 49 50 prom_argc = fw_arg0; 51 prom_argv = (char **)fw_arg1; 52 prom_envp = (char **)fw_arg2; 53 54 prom_init_cmdline(); 55 56 memsize_str = prom_getenv("memsize"); 57 if (!memsize_str || kstrtoul(memsize_str, 0, &memsize)) 58 memsize = 0x04000000; 59 add_memory_region(0, memsize, BOOT_MEM_RAM); 60 } 61 62 void prom_putchar(char c) 63 { 64 alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); 65 } 66 67 static void mtx1_reset(char *c) 68 { 69 /* Jump to the reset vector */ 70 __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000)); 71 } 72 73 static void mtx1_power_off(void) 74 { 75 while (1) 76 asm volatile ( 77 " .set mips32 \n" 78 " wait \n" 79 " .set mips0 \n"); 80 } 81 82 void __init board_setup(void) 83 { 84 #if IS_ENABLED(CONFIG_USB_OHCI_HCD) 85 /* Enable USB power switch */ 86 alchemy_gpio_direction_output(204, 0); 87 #endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */ 88 89 /* Initialize sys_pinfunc */ 90 alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC); 91 92 /* Initialize GPIO */ 93 alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR); 94 alchemy_gpio_direction_output(0, 0); /* Disable M66EN (PCI 66MHz) */ 95 alchemy_gpio_direction_output(3, 1); /* Disable PCI CLKRUN# */ 96 alchemy_gpio_direction_output(1, 1); /* Enable EXT_IO3 */ 97 alchemy_gpio_direction_output(5, 0); /* Disable eth PHY TX_ER */ 98 99 /* Enable LED and set it to green */ 100 alchemy_gpio_direction_output(211, 1); /* green on */ 101 alchemy_gpio_direction_output(212, 0); /* red off */ 102 103 pm_power_off = mtx1_power_off; 104 _machine_halt = mtx1_power_off; 105 _machine_restart = mtx1_reset; 106 107 printk(KERN_INFO "4G Systems MTX-1 Board\n"); 108 } 109 110 /******************************************************************************/ 111 112 static struct gpio_keys_button mtx1_gpio_button[] = { 113 { 114 .gpio = 207, 115 .code = BTN_0, 116 .desc = "System button", 117 } 118 }; 119 120 static struct gpio_keys_platform_data mtx1_buttons_data = { 121 .buttons = mtx1_gpio_button, 122 .nbuttons = ARRAY_SIZE(mtx1_gpio_button), 123 }; 124 125 static struct platform_device mtx1_button = { 126 .name = "gpio-keys", 127 .id = -1, 128 .dev = { 129 .platform_data = &mtx1_buttons_data, 130 } 131 }; 132 133 static struct resource mtx1_wdt_res[] = { 134 [0] = { 135 .start = 215, 136 .end = 215, 137 .name = "mtx1-wdt-gpio", 138 .flags = IORESOURCE_IRQ, 139 } 140 }; 141 142 static struct platform_device mtx1_wdt = { 143 .name = "mtx1-wdt", 144 .id = 0, 145 .num_resources = ARRAY_SIZE(mtx1_wdt_res), 146 .resource = mtx1_wdt_res, 147 }; 148 149 static const struct gpio_led default_leds[] = { 150 { 151 .name = "mtx1:green", 152 .gpio = 211, 153 }, { 154 .name = "mtx1:red", 155 .gpio = 212, 156 }, 157 }; 158 159 static struct gpio_led_platform_data mtx1_led_data = { 160 .num_leds = ARRAY_SIZE(default_leds), 161 .leds = default_leds, 162 }; 163 164 static struct platform_device mtx1_gpio_leds = { 165 .name = "leds-gpio", 166 .id = -1, 167 .dev = { 168 .platform_data = &mtx1_led_data, 169 } 170 }; 171 172 static struct mtd_partition mtx1_mtd_partitions[] = { 173 { 174 .name = "filesystem", 175 .size = 0x01C00000, 176 .offset = 0, 177 }, 178 { 179 .name = "yamon", 180 .size = 0x00100000, 181 .offset = MTDPART_OFS_APPEND, 182 .mask_flags = MTD_WRITEABLE, 183 }, 184 { 185 .name = "kernel", 186 .size = 0x002c0000, 187 .offset = MTDPART_OFS_APPEND, 188 }, 189 { 190 .name = "yamon env", 191 .size = 0x00040000, 192 .offset = MTDPART_OFS_APPEND, 193 }, 194 }; 195 196 static struct physmap_flash_data mtx1_flash_data = { 197 .width = 4, 198 .nr_parts = 4, 199 .parts = mtx1_mtd_partitions, 200 }; 201 202 static struct resource mtx1_mtd_resource = { 203 .start = 0x1e000000, 204 .end = 0x1fffffff, 205 .flags = IORESOURCE_MEM, 206 }; 207 208 static struct platform_device mtx1_mtd = { 209 .name = "physmap-flash", 210 .dev = { 211 .platform_data = &mtx1_flash_data, 212 }, 213 .num_resources = 1, 214 .resource = &mtx1_mtd_resource, 215 }; 216 217 static struct resource alchemy_pci_host_res[] = { 218 [0] = { 219 .start = AU1500_PCI_PHYS_ADDR, 220 .end = AU1500_PCI_PHYS_ADDR + 0xfff, 221 .flags = IORESOURCE_MEM, 222 }, 223 }; 224 225 static int mtx1_pci_idsel(unsigned int devsel, int assert) 226 { 227 /* This function is only necessary to support a proprietary Cardbus 228 * adapter on the mtx-1 "singleboard" variant. It triggers a custom 229 * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals. 230 */ 231 udelay(1); 232 233 if (assert && devsel != 0) 234 /* Suppress signal to Cardbus */ 235 alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */ 236 else 237 alchemy_gpio_set_value(1, 1); /* set EXT_IO3 ON */ 238 239 udelay(1); 240 return 1; 241 } 242 243 static const char mtx1_irqtab[][5] = { 244 [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */ 245 [1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */ 246 [2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */ 247 [3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */ 248 [4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */ 249 [5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */ 250 [6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */ 251 [7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */ 252 }; 253 254 static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) 255 { 256 return mtx1_irqtab[slot][pin]; 257 } 258 259 static struct alchemy_pci_platdata mtx1_pci_pd = { 260 .board_map_irq = mtx1_map_pci_irq, 261 .board_pci_idsel = mtx1_pci_idsel, 262 .pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H | 263 PCI_CONFIG_CH | 264 #if defined(__MIPSEB__) 265 PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM, 266 #else 267 0, 268 #endif 269 }; 270 271 static struct platform_device mtx1_pci_host = { 272 .dev.platform_data = &mtx1_pci_pd, 273 .name = "alchemy-pci", 274 .id = 0, 275 .num_resources = ARRAY_SIZE(alchemy_pci_host_res), 276 .resource = alchemy_pci_host_res, 277 }; 278 279 static struct platform_device *mtx1_devs[] __initdata = { 280 &mtx1_pci_host, 281 &mtx1_gpio_leds, 282 &mtx1_wdt, 283 &mtx1_button, 284 &mtx1_mtd, 285 }; 286 287 static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = { 288 .phy_search_highest_addr = 1, 289 .phy1_search_mac0 = 1, 290 }; 291 292 static int __init mtx1_register_devices(void) 293 { 294 int rc; 295 296 irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH); 297 irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW); 298 irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW); 299 irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW); 300 irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW); 301 302 au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata); 303 304 rc = gpio_request(mtx1_gpio_button[0].gpio, 305 mtx1_gpio_button[0].desc); 306 if (rc < 0) { 307 printk(KERN_INFO "mtx1: failed to request %d\n", 308 mtx1_gpio_button[0].gpio); 309 goto out; 310 } 311 gpio_direction_input(mtx1_gpio_button[0].gpio); 312 out: 313 return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs)); 314 } 315 arch_initcall(mtx1_register_devices); 316