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/page.h> 35 #include <asm/setup.h> 36 #include <mach/collie.h> 37 38 #include <asm/mach/arch.h> 39 #include <asm/mach/flash.h> 40 #include <asm/mach/map.h> 41 #include <asm/mach/serial_sa1100.h> 42 43 #include <asm/hardware/scoop.h> 44 #include <asm/mach/sharpsl_param.h> 45 #include <asm/hardware/locomo.h> 46 #include <mach/mcp.h> 47 48 #include "generic.h" 49 50 static struct resource collie_scoop_resources[] = { 51 [0] = { 52 .start = 0x40800000, 53 .end = 0x40800fff, 54 .flags = IORESOURCE_MEM, 55 }, 56 }; 57 58 static struct scoop_config collie_scoop_setup = { 59 .io_dir = COLLIE_SCOOP_IO_DIR, 60 .io_out = COLLIE_SCOOP_IO_OUT, 61 .gpio_base = COLLIE_SCOOP_GPIO_BASE, 62 }; 63 64 struct platform_device colliescoop_device = { 65 .name = "sharp-scoop", 66 .id = -1, 67 .dev = { 68 .platform_data = &collie_scoop_setup, 69 }, 70 .num_resources = ARRAY_SIZE(collie_scoop_resources), 71 .resource = collie_scoop_resources, 72 }; 73 74 static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = { 75 { 76 .dev = &colliescoop_device.dev, 77 .irq = COLLIE_IRQ_GPIO_CF_IRQ, 78 .cd_irq = COLLIE_IRQ_GPIO_CF_CD, 79 .cd_irq_str = "PCMCIA0 CD", 80 }, 81 }; 82 83 static struct scoop_pcmcia_config collie_pcmcia_config = { 84 .devs = &collie_pcmcia_scoop[0], 85 .num_devs = 1, 86 }; 87 88 static struct mcp_plat_data collie_mcp_data = { 89 .mccr0 = MCCR0_ADM | MCCR0_ExtClk, 90 .sclk_rate = 9216000, 91 .gpio_base = COLLIE_TC35143_GPIO_BASE, 92 }; 93 94 /* 95 * Collie AC IN 96 */ 97 static int collie_power_init(struct device *dev) 98 { 99 int ret = gpio_request(COLLIE_GPIO_AC_IN, "ac in"); 100 if (ret) 101 goto err_gpio_req; 102 103 ret = gpio_direction_input(COLLIE_GPIO_AC_IN); 104 if (ret) 105 goto err_gpio_in; 106 107 return 0; 108 109 err_gpio_in: 110 gpio_free(COLLIE_GPIO_AC_IN); 111 err_gpio_req: 112 return ret; 113 } 114 115 static void collie_power_exit(struct device *dev) 116 { 117 gpio_free(COLLIE_GPIO_AC_IN); 118 } 119 120 static int collie_power_ac_online(void) 121 { 122 return gpio_get_value(COLLIE_GPIO_AC_IN) == 2; 123 } 124 125 static char *collie_ac_supplied_to[] = { 126 "main-battery", 127 "backup-battery", 128 }; 129 130 static struct pda_power_pdata collie_power_data = { 131 .init = collie_power_init, 132 .is_ac_online = collie_power_ac_online, 133 .exit = collie_power_exit, 134 .supplied_to = collie_ac_supplied_to, 135 .num_supplicants = ARRAY_SIZE(collie_ac_supplied_to), 136 }; 137 138 static struct resource collie_power_resource[] = { 139 { 140 .name = "ac", 141 .start = gpio_to_irq(COLLIE_GPIO_AC_IN), 142 .end = gpio_to_irq(COLLIE_GPIO_AC_IN), 143 .flags = IORESOURCE_IRQ | 144 IORESOURCE_IRQ_HIGHEDGE | 145 IORESOURCE_IRQ_LOWEDGE, 146 }, 147 }; 148 149 static struct platform_device collie_power_device = { 150 .name = "pda-power", 151 .id = -1, 152 .dev.platform_data = &collie_power_data, 153 .resource = collie_power_resource, 154 .num_resources = ARRAY_SIZE(collie_power_resource), 155 }; 156 157 #ifdef CONFIG_SHARP_LOCOMO 158 /* 159 * low-level UART features. 160 */ 161 struct platform_device collie_locomo_device; 162 163 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl) 164 { 165 if (mctrl & TIOCM_RTS) 166 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0); 167 else 168 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1); 169 170 if (mctrl & TIOCM_DTR) 171 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0); 172 else 173 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1); 174 } 175 176 static u_int collie_uart_get_mctrl(struct uart_port *port) 177 { 178 int ret = TIOCM_CD; 179 unsigned int r; 180 181 r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR); 182 if (r == -ENODEV) 183 return ret; 184 if (r & LOCOMO_GPIO_CTS) 185 ret |= TIOCM_CTS; 186 if (r & LOCOMO_GPIO_DSR) 187 ret |= TIOCM_DSR; 188 189 return ret; 190 } 191 192 static struct sa1100_port_fns collie_port_fns __initdata = { 193 .set_mctrl = collie_uart_set_mctrl, 194 .get_mctrl = collie_uart_get_mctrl, 195 }; 196 197 static int collie_uart_probe(struct locomo_dev *dev) 198 { 199 return 0; 200 } 201 202 static int collie_uart_remove(struct locomo_dev *dev) 203 { 204 return 0; 205 } 206 207 static struct locomo_driver collie_uart_driver = { 208 .drv = { 209 .name = "collie_uart", 210 }, 211 .devid = LOCOMO_DEVID_UART, 212 .probe = collie_uart_probe, 213 .remove = collie_uart_remove, 214 }; 215 216 static int __init collie_uart_init(void) 217 { 218 return locomo_driver_register(&collie_uart_driver); 219 } 220 device_initcall(collie_uart_init); 221 222 #endif 223 224 225 static struct resource locomo_resources[] = { 226 [0] = { 227 .start = 0x40000000, 228 .end = 0x40001fff, 229 .flags = IORESOURCE_MEM, 230 }, 231 [1] = { 232 .start = IRQ_GPIO25, 233 .end = IRQ_GPIO25, 234 .flags = IORESOURCE_IRQ, 235 }, 236 }; 237 238 static struct locomo_platform_data locomo_info = { 239 .irq_base = IRQ_BOARD_START, 240 }; 241 242 struct platform_device collie_locomo_device = { 243 .name = "locomo", 244 .id = 0, 245 .dev = { 246 .platform_data = &locomo_info, 247 }, 248 .num_resources = ARRAY_SIZE(locomo_resources), 249 .resource = locomo_resources, 250 }; 251 252 static struct platform_device *devices[] __initdata = { 253 &collie_locomo_device, 254 &colliescoop_device, 255 &collie_power_device, 256 }; 257 258 static struct mtd_partition collie_partitions[] = { 259 { 260 .name = "bootloader", 261 .offset = 0, 262 .size = 0x000C0000, 263 .mask_flags = MTD_WRITEABLE 264 }, { 265 .name = "kernel", 266 .offset = MTDPART_OFS_APPEND, 267 .size = 0x00100000, 268 }, { 269 .name = "rootfs", 270 .offset = MTDPART_OFS_APPEND, 271 .size = 0x00e20000, 272 } 273 }; 274 275 static int collie_flash_init(void) 276 { 277 int rc = gpio_request(COLLIE_GPIO_VPEN, "flash Vpp enable"); 278 if (rc) 279 return rc; 280 281 rc = gpio_direction_output(COLLIE_GPIO_VPEN, 1); 282 if (rc) 283 gpio_free(COLLIE_GPIO_VPEN); 284 285 return rc; 286 } 287 288 static void collie_set_vpp(int vpp) 289 { 290 gpio_set_value(COLLIE_GPIO_VPEN, vpp); 291 } 292 293 static void collie_flash_exit(void) 294 { 295 gpio_free(COLLIE_GPIO_VPEN); 296 } 297 298 static struct flash_platform_data collie_flash_data = { 299 .map_name = "cfi_probe", 300 .init = collie_flash_init, 301 .set_vpp = collie_set_vpp, 302 .exit = collie_flash_exit, 303 .parts = collie_partitions, 304 .nr_parts = ARRAY_SIZE(collie_partitions), 305 }; 306 307 static struct resource collie_flash_resources[] = { 308 { 309 .start = SA1100_CS0_PHYS, 310 .end = SA1100_CS0_PHYS + SZ_32M - 1, 311 .flags = IORESOURCE_MEM, 312 } 313 }; 314 315 static void __init collie_init(void) 316 { 317 int ret = 0; 318 319 /* cpu initialize */ 320 GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | 321 GPIO_MCP_CLK | GPIO_32_768kHz; 322 323 GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | 324 GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | 325 GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | 326 _COLLIE_GPIO_UCB1x00_RESET | _COLLIE_GPIO_nMIC_ON | 327 _COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz; 328 329 PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | 330 PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | 331 PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM; 332 333 PWER = _COLLIE_GPIO_AC_IN | _COLLIE_GPIO_CO | _COLLIE_GPIO_ON_KEY | 334 _COLLIE_GPIO_WAKEUP | _COLLIE_GPIO_nREMOCON_INT | PWER_RTC; 335 336 PGSR = _COLLIE_GPIO_nREMOCON_ON; 337 338 PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4; 339 340 PCFR = PCFR_OPDE; 341 342 GPSR |= _COLLIE_GPIO_UCB1x00_RESET; 343 344 345 platform_scoop_config = &collie_pcmcia_config; 346 347 ret = platform_add_devices(devices, ARRAY_SIZE(devices)); 348 if (ret) { 349 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n"); 350 } 351 352 sa11x0_register_mtd(&collie_flash_data, collie_flash_resources, 353 ARRAY_SIZE(collie_flash_resources)); 354 sa11x0_register_mcp(&collie_mcp_data); 355 356 sharpsl_save_param(); 357 } 358 359 static struct map_desc collie_io_desc[] __initdata = { 360 { /* 32M main flash (cs0) */ 361 .virtual = 0xe8000000, 362 .pfn = __phys_to_pfn(0x00000000), 363 .length = 0x02000000, 364 .type = MT_DEVICE 365 }, { /* 32M boot flash (cs1) */ 366 .virtual = 0xea000000, 367 .pfn = __phys_to_pfn(0x08000000), 368 .length = 0x02000000, 369 .type = MT_DEVICE 370 } 371 }; 372 373 static void __init collie_map_io(void) 374 { 375 sa1100_map_io(); 376 iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc)); 377 378 #ifdef CONFIG_SHARP_LOCOMO 379 sa1100_register_uart_fns(&collie_port_fns); 380 #endif 381 sa1100_register_uart(0, 3); 382 sa1100_register_uart(1, 1); 383 } 384 385 MACHINE_START(COLLIE, "Sharp-Collie") 386 .map_io = collie_map_io, 387 .init_irq = sa1100_init_irq, 388 .timer = &sa1100_timer, 389 .init_machine = collie_init, 390 MACHINE_END 391