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/config.h>
  21 #include <linux/init.h>
  22 #include <linux/kernel.h>
  23 #include <linux/tty.h>
  24 #include <linux/delay.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/mtd/mtd.h>
  27 #include <linux/mtd/partitions.h>
  28 #include <linux/timer.h>
  29
  30 #include <asm/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/irq.h>
  33 #include <asm/setup.h>
  34 #include <asm/arch/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 <asm/arch/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
  86 static struct mcp_plat_data collie_mcp_data = {
  87         .mccr0          = MCCR0_ADM,
  88         .sclk_rate      = 11981000,
  89 };
  90
  91 #ifdef CONFIG_SHARP_LOCOMO
  92 /*
  93  * low-level UART features.
  94  */
  95 static struct locomo_dev *uart_dev = NULL;
  96
  97 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
  98 {
  99         if (!uart_dev) return;
 100
 101         if (mctrl & TIOCM_RTS)
 102                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 0);
 103         else
 104                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 1);
 105
 106         if (mctrl & TIOCM_DTR)
 107                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 0);
 108         else
 109                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 1);
 110 }
 111
 112 static u_int collie_uart_get_mctrl(struct uart_port *port)
 113 {
 114         int ret = TIOCM_CD;
 115         unsigned int r;
 116         if (!uart_dev) return ret;
 117
 118         r = locomo_gpio_read_output(uart_dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
 119         if (r & LOCOMO_GPIO_CTS)
 120                 ret |= TIOCM_CTS;
 121         if (r & LOCOMO_GPIO_DSR)
 122                 ret |= TIOCM_DSR;
 123
 124         return ret;
 125 }
 126
 127 static struct sa1100_port_fns collie_port_fns __initdata = {
 128         .set_mctrl      = collie_uart_set_mctrl,
 129         .get_mctrl      = collie_uart_get_mctrl,
 130 };
 131
 132 static int collie_uart_probe(struct locomo_dev *dev)
 133 {
 134         uart_dev = dev;
 135         return 0;
 136 }
 137
 138 static int collie_uart_remove(struct locomo_dev *dev)
 139 {
 140         uart_dev = NULL;
 141         return 0;
 142 }
 143
 144 static struct locomo_driver collie_uart_driver = {
 145         .drv = {
 146                 .name = "collie_uart",
 147         },
 148         .devid  = LOCOMO_DEVID_UART,
 149         .probe  = collie_uart_probe,
 150         .remove = collie_uart_remove,
 151 };
 152
 153 static int __init collie_uart_init(void) {
 154         return locomo_driver_register(&collie_uart_driver);
 155 }
 156 device_initcall(collie_uart_init);
 157
 158 #endif
 159
 160
 161 static struct resource locomo_resources[] = {
 162         [0] = {
 163                 .start          = 0x40000000,
 164                 .end            = 0x40001fff,
 165                 .flags          = IORESOURCE_MEM,
 166         },
 167         [1] = {
 168                 .start          = IRQ_GPIO25,
 169                 .end            = IRQ_GPIO25,
 170                 .flags          = IORESOURCE_IRQ,
 171         },
 172 };
 173
 174 static struct platform_device locomo_device = {
 175         .name           = "locomo",
 176         .id             = 0,
 177         .num_resources  = ARRAY_SIZE(locomo_resources),
 178         .resource       = locomo_resources,
 179 };
 180
 181 static struct platform_device *devices[] __initdata = {
 182         &locomo_device,
 183         &colliescoop_device,
 184 };
 185
 186 static struct mtd_partition collie_partitions[] = {
 187         {
 188                 .name           = "bootloader",
 189                 .offset         = 0,
 190                 .size           = 0x000C0000,
 191                 .mask_flags     = MTD_WRITEABLE
 192         }, {
 193                 .name           = "kernel",
 194                 .offset         = MTDPART_OFS_APPEND,
 195                 .size           = 0x00100000,
 196         }, {
 197                 .name           = "rootfs",
 198                 .offset         = MTDPART_OFS_APPEND,
 199                 .size           = 0x00e20000,
 200         }
 201 };
 202
 203 static void collie_set_vpp(int vpp)
 204 {
 205         write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
 206         if (vpp)
 207                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
 208         else
 209                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
 210 }
 211
 212 static struct flash_platform_data collie_flash_data = {
 213         .map_name       = "cfi_probe",
 214         .set_vpp        = collie_set_vpp,
 215         .parts          = collie_partitions,
 216         .nr_parts       = ARRAY_SIZE(collie_partitions),
 217 };
 218
 219 static struct resource collie_flash_resources[] = {
 220         {
 221                 .start  = SA1100_CS0_PHYS,
 222                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
 223                 .flags  = IORESOURCE_MEM,
 224         }
 225 };
 226
 227 static void __init collie_init(void)
 228 {
 229         int ret = 0;
 230
 231         /* cpu initialize */
 232         GAFR = ( GPIO_SSP_TXD | \
 233                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
 234                  GPIO_32_768kHz );
 235
 236         GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
 237                  GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
 238                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
 239                  GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
 240         GPLR = GPIO_GPIO18;
 241
 242         // PPC pin setting
 243         PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
 244                  PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
 245                  PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );
 246
 247         PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );
 248
 249         GAFR |= GPIO_32_768kHz;
 250         GPDR |= GPIO_32_768kHz;
 251         TUCR  = TUCR_32_768kHz;
 252
 253         platform_scoop_config = &collie_pcmcia_config;
 254
 255         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 256         if (ret) {
 257                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 258         }
 259
 260         sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
 261                               ARRAY_SIZE(collie_flash_resources));
 262         sa11x0_set_mcp_data(&collie_mcp_data);
 263
 264         sharpsl_save_param();
 265 }
 266
 267 static struct map_desc collie_io_desc[] __initdata = {
 268         {       /* 32M main flash (cs0) */
 269                 .virtual        = 0xe8000000,
 270                 .pfn            = __phys_to_pfn(0x00000000),
 271                 .length         = 0x02000000,
 272                 .type           = MT_DEVICE
 273         }, {    /* 32M boot flash (cs1) */
 274                 .virtual        = 0xea000000,
 275                 .pfn            = __phys_to_pfn(0x08000000),
 276                 .length         = 0x02000000,
 277                 .type           = MT_DEVICE
 278         }
 279 };
 280
 281 static void __init collie_map_io(void)
 282 {
 283         sa1100_map_io();
 284         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 285
 286 #ifdef CONFIG_SHARP_LOCOMO
 287         sa1100_register_uart_fns(&collie_port_fns);
 288 #endif
 289         sa1100_register_uart(0, 3);
 290         sa1100_register_uart(1, 1);
 291 }
 292
 293 MACHINE_START(COLLIE, "Sharp-Collie")
 294         .phys_io        = 0x80000000,
 295         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 296         .map_io         = collie_map_io,
 297         .init_irq       = sa1100_init_irq,
 298         .timer          = &sa1100_timer,
 299         .init_machine   = collie_init,
 300 MACHINE_END