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@suse.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
  30 #include <mach/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/irq.h>
  33 #include <asm/setup.h>
  34 #include <mach/collie.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/flash.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/serial_sa1100.h>
  40
  41 #include <asm/hardware/scoop.h>
  42 #include <asm/mach/sharpsl_param.h>
  43 #include <asm/hardware/locomo.h>
  44 #include <mach/mcp.h>
  45
  46 #include "generic.h"
  47
  48 static struct resource collie_scoop_resources[] = {
  49         [0] = {
  50                 .start          = 0x40800000,
  51                 .end            = 0x40800fff,
  52                 .flags          = IORESOURCE_MEM,
  53         },
  54 };
  55
  56 static struct scoop_config collie_scoop_setup = {
  57         .io_dir         = COLLIE_SCOOP_IO_DIR,
  58         .io_out         = COLLIE_SCOOP_IO_OUT,
  59 };
  60
  61 struct platform_device colliescoop_device = {
  62         .name           = "sharp-scoop",
  63         .id             = -1,
  64         .dev            = {
  65                 .platform_data  = &collie_scoop_setup,
  66         },
  67         .num_resources  = ARRAY_SIZE(collie_scoop_resources),
  68         .resource       = collie_scoop_resources,
  69 };
  70
  71 static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
  72         {
  73         .dev            = &colliescoop_device.dev,
  74         .irq            = COLLIE_IRQ_GPIO_CF_IRQ,
  75         .cd_irq         = COLLIE_IRQ_GPIO_CF_CD,
  76         .cd_irq_str     = "PCMCIA0 CD",
  77         },
  78 };
  79
  80 static struct scoop_pcmcia_config collie_pcmcia_config = {
  81         .devs           = &collie_pcmcia_scoop[0],
  82         .num_devs       = 1,
  83 };
  84
  85 static struct mcp_plat_data collie_mcp_data = {
  86         .mccr0          = MCCR0_ADM | MCCR0_ExtClk,
  87         .sclk_rate      = 9216000,
  88 };
  89
  90 #ifdef CONFIG_SHARP_LOCOMO
  91 /*
  92  * low-level UART features.
  93  */
  94 struct platform_device collie_locomo_device;
  95
  96 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
  97 {
  98         if (mctrl & TIOCM_RTS)
  99                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);
 100         else
 101                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);
 102
 103         if (mctrl & TIOCM_DTR)
 104                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);
 105         else
 106                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);
 107 }
 108
 109 static u_int collie_uart_get_mctrl(struct uart_port *port)
 110 {
 111         int ret = TIOCM_CD;
 112         unsigned int r;
 113
 114         r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
 115         if (r == -ENODEV)
 116                 return ret;
 117         if (r & LOCOMO_GPIO_CTS)
 118                 ret |= TIOCM_CTS;
 119         if (r & LOCOMO_GPIO_DSR)
 120                 ret |= TIOCM_DSR;
 121
 122         return ret;
 123 }
 124
 125 static struct sa1100_port_fns collie_port_fns __initdata = {
 126         .set_mctrl      = collie_uart_set_mctrl,
 127         .get_mctrl      = collie_uart_get_mctrl,
 128 };
 129
 130 static int collie_uart_probe(struct locomo_dev *dev)
 131 {
 132         return 0;
 133 }
 134
 135 static int collie_uart_remove(struct locomo_dev *dev)
 136 {
 137         return 0;
 138 }
 139
 140 static struct locomo_driver collie_uart_driver = {
 141         .drv = {
 142                 .name = "collie_uart",
 143         },
 144         .devid  = LOCOMO_DEVID_UART,
 145         .probe  = collie_uart_probe,
 146         .remove = collie_uart_remove,
 147 };
 148
 149 static int __init collie_uart_init(void)
 150 {
 151         return locomo_driver_register(&collie_uart_driver);
 152 }
 153 device_initcall(collie_uart_init);
 154
 155 #endif
 156
 157
 158 static struct resource locomo_resources[] = {
 159         [0] = {
 160                 .start          = 0x40000000,
 161                 .end            = 0x40001fff,
 162                 .flags          = IORESOURCE_MEM,
 163         },
 164         [1] = {
 165                 .start          = IRQ_GPIO25,
 166                 .end            = IRQ_GPIO25,
 167                 .flags          = IORESOURCE_IRQ,
 168         },
 169 };
 170
 171 struct platform_device collie_locomo_device = {
 172         .name           = "locomo",
 173         .id             = 0,
 174         .num_resources  = ARRAY_SIZE(locomo_resources),
 175         .resource       = locomo_resources,
 176 };
 177
 178 static struct platform_device *devices[] __initdata = {
 179         &collie_locomo_device,
 180         &colliescoop_device,
 181 };
 182
 183 static struct mtd_partition collie_partitions[] = {
 184         {
 185                 .name           = "bootloader",
 186                 .offset         = 0,
 187                 .size           = 0x000C0000,
 188                 .mask_flags     = MTD_WRITEABLE
 189         }, {
 190                 .name           = "kernel",
 191                 .offset         = MTDPART_OFS_APPEND,
 192                 .size           = 0x00100000,
 193         }, {
 194                 .name           = "rootfs",
 195                 .offset         = MTDPART_OFS_APPEND,
 196                 .size           = 0x00e20000,
 197         }
 198 };
 199
 200 static int collie_flash_init(void)
 201 {
 202         int rc = gpio_request(COLLIE_GPIO_VPEN, "flash Vpp enable");
 203         if (rc)
 204                 return rc;
 205
 206         rc = gpio_direction_output(COLLIE_GPIO_VPEN, 1);
 207         if (rc)
 208                 gpio_free(COLLIE_GPIO_VPEN);
 209
 210         return rc;
 211 }
 212
 213 static void collie_set_vpp(int vpp)
 214 {
 215         gpio_set_value(COLLIE_GPIO_VPEN, vpp);
 216 }
 217
 218 static void collie_flash_exit(void)
 219 {
 220         gpio_free(COLLIE_GPIO_VPEN);
 221 }
 222
 223 static struct flash_platform_data collie_flash_data = {
 224         .map_name       = "cfi_probe",
 225         .init           = collie_flash_init,
 226         .set_vpp        = collie_set_vpp,
 227         .exit           = collie_flash_exit,
 228         .parts          = collie_partitions,
 229         .nr_parts       = ARRAY_SIZE(collie_partitions),
 230 };
 231
 232 static struct resource collie_flash_resources[] = {
 233         {
 234                 .start  = SA1100_CS0_PHYS,
 235                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
 236                 .flags  = IORESOURCE_MEM,
 237         }
 238 };
 239
 240 static void __init collie_init(void)
 241 {
 242         int ret = 0;
 243
 244         /* cpu initialize */
 245         GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK |
 246                 GPIO_MCP_CLK | GPIO_32_768kHz;
 247
 248         GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
 249                 GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
 250                 GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |
 251                 COLLIE_GPIO_UCB1x00_RESET | COLLIE_GPIO_nMIC_ON |
 252                 COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;
 253
 254         PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
 255                 PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
 256                 PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;
 257
 258         PWER = COLLIE_GPIO_AC_IN | COLLIE_GPIO_CO | COLLIE_GPIO_ON_KEY |
 259                 COLLIE_GPIO_WAKEUP | COLLIE_GPIO_nREMOCON_INT | PWER_RTC;
 260
 261         PGSR = COLLIE_GPIO_nREMOCON_ON;
 262
 263         PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;
 264
 265         PCFR = PCFR_OPDE;
 266
 267
 268         platform_scoop_config = &collie_pcmcia_config;
 269
 270         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 271         if (ret) {
 272                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 273         }
 274
 275         sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
 276                               ARRAY_SIZE(collie_flash_resources));
 277         sa11x0_set_mcp_data(&collie_mcp_data);
 278
 279         sharpsl_save_param();
 280 }
 281
 282 static struct map_desc collie_io_desc[] __initdata = {
 283         {       /* 32M main flash (cs0) */
 284                 .virtual        = 0xe8000000,
 285                 .pfn            = __phys_to_pfn(0x00000000),
 286                 .length         = 0x02000000,
 287                 .type           = MT_DEVICE
 288         }, {    /* 32M boot flash (cs1) */
 289                 .virtual        = 0xea000000,
 290                 .pfn            = __phys_to_pfn(0x08000000),
 291                 .length         = 0x02000000,
 292                 .type           = MT_DEVICE
 293         }
 294 };
 295
 296 static void __init collie_map_io(void)
 297 {
 298         sa1100_map_io();
 299         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 300
 301 #ifdef CONFIG_SHARP_LOCOMO
 302         sa1100_register_uart_fns(&collie_port_fns);
 303 #endif
 304         sa1100_register_uart(0, 3);
 305         sa1100_register_uart(1, 1);
 306 }
 307
 308 MACHINE_START(COLLIE, "Sharp-Collie")
 309         .phys_io        = 0x80000000,
 310         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 311         .map_io         = collie_map_io,
 312         .init_irq       = sa1100_init_irq,
 313         .timer          = &sa1100_timer,
 314         .init_machine   = collie_init,
 315 MACHINE_END