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/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