Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 1 | /* |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 2 | * GPR board platform device registration (Au1550) |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de> |
| 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 | |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 21 | #include <linux/delay.h> |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 22 | #include <linux/init.h> |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 23 | #include <linux/interrupt.h> |
| 24 | #include <linux/kernel.h> |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 25 | #include <linux/platform_device.h> |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 26 | #include <linux/pm.h> |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 27 | #include <linux/mtd/partitions.h> |
| 28 | #include <linux/mtd/physmap.h> |
| 29 | #include <linux/leds.h> |
| 30 | #include <linux/gpio.h> |
| 31 | #include <linux/i2c.h> |
| 32 | #include <linux/i2c-gpio.h> |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 33 | #include <asm/bootinfo.h> |
Ralf Baechle | bdc92d74 | 2013-05-21 16:59:19 +0200 | [diff] [blame] | 34 | #include <asm/idle.h> |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 35 | #include <asm/reboot.h> |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 36 | #include <asm/mach-au1x00/au1000.h> |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 37 | #include <prom.h> |
| 38 | |
| 39 | const char *get_system_type(void) |
| 40 | { |
| 41 | return "GPR"; |
| 42 | } |
| 43 | |
| 44 | void __init prom_init(void) |
| 45 | { |
| 46 | unsigned char *memsize_str; |
| 47 | unsigned long memsize; |
| 48 | |
| 49 | prom_argc = fw_arg0; |
| 50 | prom_argv = (char **)fw_arg1; |
| 51 | prom_envp = (char **)fw_arg2; |
| 52 | |
| 53 | prom_init_cmdline(); |
| 54 | |
| 55 | memsize_str = prom_getenv("memsize"); |
| 56 | if (!memsize_str) |
| 57 | memsize = 0x04000000; |
| 58 | else |
| 59 | strict_strtoul(memsize_str, 0, &memsize); |
| 60 | add_memory_region(0, memsize, BOOT_MEM_RAM); |
| 61 | } |
| 62 | |
| 63 | void prom_putchar(unsigned char c) |
| 64 | { |
| 65 | alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); |
| 66 | } |
| 67 | |
| 68 | static void gpr_reset(char *c) |
| 69 | { |
| 70 | /* switch System-LED to orange (red# and green# on) */ |
| 71 | alchemy_gpio_direction_output(4, 0); |
| 72 | alchemy_gpio_direction_output(5, 0); |
| 73 | |
| 74 | /* trigger watchdog to reset board in 200ms */ |
| 75 | printk(KERN_EMERG "Triggering watchdog soft reset...\n"); |
| 76 | raw_local_irq_disable(); |
| 77 | alchemy_gpio_direction_output(1, 0); |
| 78 | udelay(1); |
| 79 | alchemy_gpio_set_value(1, 1); |
| 80 | while (1) |
| 81 | cpu_wait(); |
| 82 | } |
| 83 | |
| 84 | static void gpr_power_off(void) |
| 85 | { |
| 86 | while (1) |
| 87 | cpu_wait(); |
| 88 | } |
| 89 | |
| 90 | void __init board_setup(void) |
| 91 | { |
| 92 | printk(KERN_INFO "Trapeze ITS GPR board\n"); |
| 93 | |
| 94 | pm_power_off = gpr_power_off; |
| 95 | _machine_halt = gpr_power_off; |
| 96 | _machine_restart = gpr_reset; |
| 97 | |
| 98 | /* Enable UART1/3 */ |
| 99 | alchemy_uart_enable(AU1000_UART3_PHYS_ADDR); |
| 100 | alchemy_uart_enable(AU1000_UART1_PHYS_ADDR); |
| 101 | |
| 102 | /* Take away Reset of UMTS-card */ |
| 103 | alchemy_gpio_direction_output(215, 1); |
| 104 | } |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 105 | |
| 106 | /* |
| 107 | * Watchdog |
| 108 | */ |
| 109 | static struct resource gpr_wdt_resource[] = { |
| 110 | [0] = { |
| 111 | .start = 1, |
| 112 | .end = 1, |
| 113 | .name = "gpr-adm6320-wdt", |
| 114 | .flags = IORESOURCE_IRQ, |
| 115 | } |
| 116 | }; |
| 117 | |
| 118 | static struct platform_device gpr_wdt_device = { |
| 119 | .name = "adm6320-wdt", |
| 120 | .id = 0, |
| 121 | .num_resources = ARRAY_SIZE(gpr_wdt_resource), |
| 122 | .resource = gpr_wdt_resource, |
| 123 | }; |
| 124 | |
| 125 | /* |
| 126 | * FLASH |
| 127 | * |
| 128 | * 0x00000000-0x00200000 : "kernel" |
| 129 | * 0x00200000-0x00a00000 : "rootfs" |
| 130 | * 0x01d00000-0x01f00000 : "config" |
| 131 | * 0x01c00000-0x01d00000 : "yamon" |
| 132 | * 0x01d00000-0x01d40000 : "yamon env vars" |
| 133 | * 0x00000000-0x00a00000 : "kernel+rootfs" |
| 134 | */ |
| 135 | static struct mtd_partition gpr_mtd_partitions[] = { |
| 136 | { |
| 137 | .name = "kernel", |
| 138 | .size = 0x00200000, |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 139 | .offset = 0, |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 140 | }, |
| 141 | { |
| 142 | .name = "rootfs", |
| 143 | .size = 0x00800000, |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 144 | .offset = MTDPART_OFS_APPEND, |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 145 | .mask_flags = MTD_WRITEABLE, |
| 146 | }, |
| 147 | { |
| 148 | .name = "config", |
| 149 | .size = 0x00200000, |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 150 | .offset = 0x01d00000, |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 151 | }, |
| 152 | { |
| 153 | .name = "yamon", |
| 154 | .size = 0x00100000, |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 155 | .offset = 0x01c00000, |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 156 | }, |
| 157 | { |
| 158 | .name = "yamon env vars", |
| 159 | .size = 0x00040000, |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 160 | .offset = MTDPART_OFS_APPEND, |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 161 | }, |
| 162 | { |
| 163 | .name = "kernel+rootfs", |
| 164 | .size = 0x00a00000, |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 165 | .offset = 0, |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 166 | }, |
| 167 | }; |
| 168 | |
| 169 | static struct physmap_flash_data gpr_flash_data = { |
| 170 | .width = 4, |
| 171 | .nr_parts = ARRAY_SIZE(gpr_mtd_partitions), |
| 172 | .parts = gpr_mtd_partitions, |
| 173 | }; |
| 174 | |
| 175 | static struct resource gpr_mtd_resource = { |
| 176 | .start = 0x1e000000, |
| 177 | .end = 0x1fffffff, |
| 178 | .flags = IORESOURCE_MEM, |
| 179 | }; |
| 180 | |
| 181 | static struct platform_device gpr_mtd_device = { |
| 182 | .name = "physmap-flash", |
| 183 | .dev = { |
| 184 | .platform_data = &gpr_flash_data, |
| 185 | }, |
| 186 | .num_resources = 1, |
| 187 | .resource = &gpr_mtd_resource, |
| 188 | }; |
| 189 | |
| 190 | /* |
| 191 | * LEDs |
| 192 | */ |
| 193 | static struct gpio_led gpr_gpio_leds[] = { |
| 194 | { /* green */ |
| 195 | .name = "gpr:green", |
| 196 | .gpio = 4, |
| 197 | .active_low = 1, |
| 198 | }, |
| 199 | { /* red */ |
| 200 | .name = "gpr:red", |
| 201 | .gpio = 5, |
| 202 | .active_low = 1, |
| 203 | } |
| 204 | }; |
| 205 | |
| 206 | static struct gpio_led_platform_data gpr_led_data = { |
| 207 | .num_leds = ARRAY_SIZE(gpr_gpio_leds), |
| 208 | .leds = gpr_gpio_leds, |
| 209 | }; |
| 210 | |
| 211 | static struct platform_device gpr_led_devices = { |
| 212 | .name = "leds-gpio", |
| 213 | .id = -1, |
| 214 | .dev = { |
| 215 | .platform_data = &gpr_led_data, |
| 216 | } |
| 217 | }; |
| 218 | |
| 219 | /* |
| 220 | * I2C |
| 221 | */ |
| 222 | static struct i2c_gpio_platform_data gpr_i2c_data = { |
| 223 | .sda_pin = 209, |
| 224 | .sda_is_open_drain = 1, |
| 225 | .scl_pin = 210, |
| 226 | .scl_is_open_drain = 1, |
| 227 | .udelay = 2, /* ~100 kHz */ |
| 228 | .timeout = HZ, |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 229 | }; |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 230 | |
| 231 | static struct platform_device gpr_i2c_device = { |
| 232 | .name = "i2c-gpio", |
| 233 | .id = -1, |
| 234 | .dev.platform_data = &gpr_i2c_data, |
| 235 | }; |
| 236 | |
| 237 | static struct i2c_board_info gpr_i2c_info[] __initdata = { |
| 238 | { |
| 239 | I2C_BOARD_INFO("lm83", 0x18), |
| 240 | .type = "lm83" |
| 241 | } |
| 242 | }; |
| 243 | |
Manuel Lauss | 7517de3 | 2011-08-12 11:39:44 +0200 | [diff] [blame] | 244 | |
| 245 | |
| 246 | static struct resource alchemy_pci_host_res[] = { |
| 247 | [0] = { |
| 248 | .start = AU1500_PCI_PHYS_ADDR, |
| 249 | .end = AU1500_PCI_PHYS_ADDR + 0xfff, |
| 250 | .flags = IORESOURCE_MEM, |
| 251 | }, |
| 252 | }; |
| 253 | |
| 254 | static int gpr_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) |
| 255 | { |
| 256 | if ((slot == 0) && (pin == 1)) |
| 257 | return AU1550_PCI_INTA; |
| 258 | else if ((slot == 0) && (pin == 2)) |
| 259 | return AU1550_PCI_INTB; |
| 260 | |
Manuel Lauss | 8e02691 | 2011-11-10 12:06:21 +0000 | [diff] [blame] | 261 | return 0xff; |
Manuel Lauss | 7517de3 | 2011-08-12 11:39:44 +0200 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | static struct alchemy_pci_platdata gpr_pci_pd = { |
| 265 | .board_map_irq = gpr_map_pci_irq, |
| 266 | .pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H | |
| 267 | PCI_CONFIG_CH | |
| 268 | #if defined(__MIPSEB__) |
| 269 | PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM, |
| 270 | #else |
| 271 | 0, |
| 272 | #endif |
| 273 | }; |
| 274 | |
| 275 | static struct platform_device gpr_pci_host_dev = { |
| 276 | .dev.platform_data = &gpr_pci_pd, |
| 277 | .name = "alchemy-pci", |
| 278 | .id = 0, |
| 279 | .num_resources = ARRAY_SIZE(alchemy_pci_host_res), |
| 280 | .resource = alchemy_pci_host_res, |
| 281 | }; |
| 282 | |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 283 | static struct platform_device *gpr_devices[] __initdata = { |
| 284 | &gpr_wdt_device, |
| 285 | &gpr_mtd_device, |
| 286 | &gpr_i2c_device, |
| 287 | &gpr_led_devices, |
| 288 | }; |
| 289 | |
Manuel Lauss | 7517de3 | 2011-08-12 11:39:44 +0200 | [diff] [blame] | 290 | static int __init gpr_pci_init(void) |
| 291 | { |
| 292 | return platform_device_register(&gpr_pci_host_dev); |
| 293 | } |
| 294 | /* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */ |
| 295 | arch_initcall(gpr_pci_init); |
| 296 | |
| 297 | |
Wolfgang Grandegger | cb8f55b | 2010-07-15 11:21:23 +0200 | [diff] [blame] | 298 | static int __init gpr_dev_init(void) |
| 299 | { |
| 300 | i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info)); |
| 301 | |
| 302 | return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices)); |
| 303 | } |
| 304 | device_initcall(gpr_dev_init); |