arch/arm/mach-sa1100/collie.c

   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