1 /* 2 * linux/arch/arm/mach-sa1100/collie.c 3 * 4 * May be copied or modified under the terms of the GNU General Public 5 * License. See linux/COPYING for more information. 6 * 7 * This file contains all Collie-specific tweaks. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 * 13 * ChangeLog: 14 * 2006 Pavel Machek <pavel@ucw.cz> 15 * 03-06-2004 John Lenz <lenz@cs.wisc.edu> 16 * 06-04-2002 Chris Larson <kergoth@digitalnemesis.net> 17 * 04-16-2001 Lineo Japan,Inc. ... 18 */ 19 20 #include <linux/init.h> 21 #include <linux/kernel.h> 22 #include <linux/tty.h> 23 #include <linux/delay.h> 24 #include <linux/platform_device.h> 25 #include <linux/mtd/mtd.h> 26 #include <linux/mtd/partitions.h> 27 #include <linux/timer.h> 28 #include <linux/gpio.h> 29 #include <linux/pda_power.h> 30 31 #include <mach/hardware.h> 32 #include <asm/mach-types.h> 33 #include <asm/irq.h> 34 #include <asm/setup.h> 35 #include <mach/collie.h> 36 37 #include <asm/mach/arch.h> 38 #include <asm/mach/flash.h> 39 #include <asm/mach/map.h> 40 #include <asm/mach/serial_sa1100.h> 41 42 #include <asm/hardware/scoop.h> 43 #include <asm/mach/sharpsl_param.h> 44 #include <asm/hardware/locomo.h> 45 #include <mach/mcp.h> 46 47 #include "generic.h" 48 49 static struct resource collie_scoop_resources[] = { 50 [0] = { 51 .start = 0x40800000, 52 .end = 0x40800fff, 53 .flags = IORESOURCE_MEM, 54 }, 55 }; 56 57 static struct scoop_config collie_scoop_setup = { 58 .io_dir = COLLIE_SCOOP_IO_DIR, 59 .io_out = COLLIE_SCOOP_IO_OUT, 60 .gpio_base = COLLIE_SCOOP_GPIO_BASE, 61 }; 62 63 struct platform_device colliescoop_device = { 64 .name = "sharp-scoop", 65 .id = -1, 66 .dev = { 67 .platform_data = &collie_scoop_setup, 68 }, 69 .num_resources = ARRAY_SIZE(collie_scoop_resources), 70 .resource = collie_scoop_resources, 71 }; 72 73 static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = { 74 { 75 .dev = &colliescoop_device.dev, 76 .irq = COLLIE_IRQ_GPIO_CF_IRQ, 77 .cd_irq = COLLIE_IRQ_GPIO_CF_CD, 78 .cd_irq_str = "PCMCIA0 CD", 79 }, 80 }; 81 82 static struct scoop_pcmcia_config collie_pcmcia_config = { 83 .devs = &collie_pcmcia_scoop[0], 84 .num_devs = 1, 85 }; 86 87 static struct mcp_plat_data collie_mcp_data = { 88 .mccr0 = MCCR0_ADM | MCCR0_ExtClk, 89 .sclk_rate = 9216000, 90 .gpio_base = COLLIE_TC35143_GPIO_BASE, 91 }; 92 93 /* 94 * Collie AC IN 95 */ 96 static int collie_power_init(struct device *dev) 97 { 98 int ret = gpio_request(COLLIE_GPIO_AC_IN, "ac in"); 99 if (ret) 100 goto err_gpio_req; 101 102 ret = gpio_direction_input(COLLIE_GPIO_AC_IN); 103 if (ret) 104 goto err_gpio_in; 105 106 return 0; 107 108 err_gpio_in: 109 gpio_free(COLLIE_GPIO_AC_IN); 110 err_gpio_req: 111 return ret; 112 } 113 114 static void collie_power_exit(struct device *dev) 115 { 116 gpio_free(COLLIE_GPIO_AC_IN); 117 } 118 119 static int collie_power_ac_online(void) 120 { 121 return gpio_get_value(COLLIE_GPIO_AC_IN) == 2; 122 } 123 124 static char *collie_ac_supplied_to[] = { 125 "main-battery", 126 "backup-battery", 127 }; 128 129 static struct pda_power_pdata collie_power_data = { 130 .init = collie_power_init, 131 .is_ac_online = collie_power_ac_online, 132 .exit = collie_power_exit, 133 .supplied_to = collie_ac_supplied_to, 134 .num_supplicants = ARRAY_SIZE(collie_ac_supplied_to), 135 }; 136 137 static struct resource collie_power_resource[] = { 138 { 139 .name = "ac", 140 .start = gpio_to_irq(COLLIE_GPIO_AC_IN), 141 .end = gpio_to_irq(COLLIE_GPIO_AC_IN), 142 .flags = IORESOURCE_IRQ | 143 IORESOURCE_IRQ_HIGHEDGE | 144 IORESOURCE_IRQ_LOWEDGE, 145 }, 146 }; 147 148 static struct platform_device collie_power_device = { 149 .name = "pda-power", 150 .id = -1, 151 .dev.platform_data = &collie_power_data, 152 .resource = collie_power_resource, 153 .num_resources = ARRAY_SIZE(collie_power_resource), 154 }; 155 156 #ifdef CONFIG_SHARP_LOCOMO 157 /* 158 * low-level UART features. 159 */ 160 struct platform_device collie_locomo_device; 161 162 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl) 163 { 164 if (mctrl & TIOCM_RTS) 165 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0); 166 else 167 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1); 168 169 if (mctrl & TIOCM_DTR) 170 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0); 171 else 172 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1); 173 } 174 175 static u_int collie_uart_get_mctrl(struct uart_port *port) 176 { 177 int ret = TIOCM_CD; 178 unsigned int r; 179 180 r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR); 181 if (r == -ENODEV) 182 return ret; 183 if (r & LOCOMO_GPIO_CTS) 184 ret |= TIOCM_CTS; 185 if (r & LOCOMO_GPIO_DSR) 186 ret |= TIOCM_DSR; 187 188 return ret; 189 } 190 191 static struct sa1100_port_fns collie_port_fns __initdata = { 192 .set_mctrl = collie_uart_set_mctrl, 193 .get_mctrl = collie_uart_get_mctrl, 194 }; 195 196 static int collie_uart_probe(struct locomo_dev *dev) 197 { 198 return 0; 199 } 200 201 static int collie_uart_remove(struct locomo_dev *dev) 202 { 203 return 0; 204 } 205 206 static struct locomo_driver collie_uart_driver = { 207 .drv = { 208 .name = "collie_uart", 209 }, 210 .devid = LOCOMO_DEVID_UART, 211 .probe = collie_uart_probe, 212 .remove = collie_uart_remove, 213 }; 214 215 static int __init collie_uart_init(void) 216 { 217 return locomo_driver_register(&collie_uart_driver); 218 } 219 device_initcall(collie_uart_init); 220 221 #endif 222 223 224 static struct resource locomo_resources[] = { 225 [0] = { 226 .start = 0x40000000, 227 .end = 0x40001fff, 228 .flags = IORESOURCE_MEM, 229 }, 230 [1] = { 231 .start = IRQ_GPIO25, 232 .end = IRQ_GPIO25, 233 .flags = IORESOURCE_IRQ, 234 }, 235 }; 236 237 static struct locomo_platform_data locomo_info = { 238 .irq_base = IRQ_BOARD_START, 239 }; 240 241 struct platform_device collie_locomo_device = { 242 .name = "locomo", 243 .id = 0, 244 .dev = { 245 .platform_data = &locomo_info, 246 }, 247 .num_resources = ARRAY_SIZE(locomo_resources), 248 .resource = locomo_resources, 249 }; 250 251 static struct platform_device *devices[] __initdata = { 252 &collie_locomo_device, 253 &colliescoop_device, 254 &collie_power_device, 255 }; 256 257 static struct mtd_partition collie_partitions[] = { 258 { 259 .name = "bootloader", 260 .offset = 0, 261 .size = 0x000C0000, 262 .mask_flags = MTD_WRITEABLE 263 }, { 264 .name = "kernel", 265 .offset = MTDPART_OFS_APPEND, 266 .size = 0x00100000, 267 }, { 268 .name = "rootfs", 269 .offset = MTDPART_OFS_APPEND, 270 .size = 0x00e20000, 271 } 272 }; 273 274 static int collie_flash_init(void) 275 { 276 int rc = gpio_request(COLLIE_GPIO_VPEN, "flash Vpp enable"); 277 if (rc) 278 return rc; 279 280 rc = gpio_direction_output(COLLIE_GPIO_VPEN, 1); 281 if (rc) 282 gpio_free(COLLIE_GPIO_VPEN); 283 284 return rc; 285 } 286 287 static void collie_set_vpp(int vpp) 288 { 289 gpio_set_value(COLLIE_GPIO_VPEN, vpp); 290 } 291 292 static void collie_flash_exit(void) 293 { 294 gpio_free(COLLIE_GPIO_VPEN); 295 } 296 297 static struct flash_platform_data collie_flash_data = { 298 .map_name = "cfi_probe", 299 .init = collie_flash_init, 300 .set_vpp = collie_set_vpp, 301 .exit = collie_flash_exit, 302 .parts = collie_partitions, 303 .nr_parts = ARRAY_SIZE(collie_partitions), 304 }; 305 306 static struct resource collie_flash_resources[] = { 307 { 308 .start = SA1100_CS0_PHYS, 309 .end = SA1100_CS0_PHYS + SZ_32M - 1, 310 .flags = IORESOURCE_MEM, 311 } 312 }; 313 314 static void __init collie_init(void) 315 { 316 int ret = 0; 317 318 /* cpu initialize */ 319 GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | 320 GPIO_MCP_CLK | GPIO_32_768kHz; 321 322 GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | 323 GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | 324 GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | 325 _COLLIE_GPIO_UCB1x00_RESET | _COLLIE_GPIO_nMIC_ON | 326 _COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz; 327 328 PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | 329 PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | 330 PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM; 331 332 PWER = _COLLIE_GPIO_AC_IN | _COLLIE_GPIO_CO | _COLLIE_GPIO_ON_KEY | 333 _COLLIE_GPIO_WAKEUP | _COLLIE_GPIO_nREMOCON_INT | PWER_RTC; 334 335 PGSR = _COLLIE_GPIO_nREMOCON_ON; 336 337 PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4; 338 339 PCFR = PCFR_OPDE; 340 341 GPSR |= _COLLIE_GPIO_UCB1x00_RESET; 342 343 344 platform_scoop_config = &collie_pcmcia_config; 345 346 ret = platform_add_devices(devices, ARRAY_SIZE(devices)); 347 if (ret) { 348 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n"); 349 } 350 351 sa11x0_register_mtd(&collie_flash_data, collie_flash_resources, 352 ARRAY_SIZE(collie_flash_resources)); 353 sa11x0_register_mcp(&collie_mcp_data); 354 355 sharpsl_save_param(); 356 } 357 358 static struct map_desc collie_io_desc[] __initdata = { 359 { /* 32M main flash (cs0) */ 360 .virtual = 0xe8000000, 361 .pfn = __phys_to_pfn(0x00000000), 362 .length = 0x02000000, 363 .type = MT_DEVICE 364 }, { /* 32M boot flash (cs1) */ 365 .virtual = 0xea000000, 366 .pfn = __phys_to_pfn(0x08000000), 367 .length = 0x02000000, 368 .type = MT_DEVICE 369 } 370 }; 371 372 static void __init collie_map_io(void) 373 { 374 sa1100_map_io(); 375 iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc)); 376 377 #ifdef CONFIG_SHARP_LOCOMO 378 sa1100_register_uart_fns(&collie_port_fns); 379 #endif 380 sa1100_register_uart(0, 3); 381 sa1100_register_uart(1, 1); 382 } 383 384 MACHINE_START(COLLIE, "Sharp-Collie") 385 .map_io = collie_map_io, 386 .init_irq = sa1100_init_irq, 387 .timer = &sa1100_timer, 388 .init_machine = collie_init, 389 MACHINE_END 390