linux/arch/arm/mach-sa1100/collie.c
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   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
  29#include <mach/hardware.h>
  30#include <asm/mach-types.h>
  31#include <asm/irq.h>
  32#include <asm/setup.h>
  33#include <mach/collie.h>
  34
  35#include <asm/mach/arch.h>
  36#include <asm/mach/flash.h>
  37#include <asm/mach/map.h>
  38#include <asm/mach/serial_sa1100.h>
  39
  40#include <asm/hardware/scoop.h>
  41#include <asm/mach/sharpsl_param.h>
  42#include <asm/hardware/locomo.h>
  43#include <mach/mcp.h>
  44
  45#include "generic.h"
  46
  47static struct resource collie_scoop_resources[] = {
  48        [0] = {
  49                .start          = 0x40800000,
  50                .end            = 0x40800fff,
  51                .flags          = IORESOURCE_MEM,
  52        },
  53};
  54
  55static struct scoop_config collie_scoop_setup = {
  56        .io_dir         = COLLIE_SCOOP_IO_DIR,
  57        .io_out         = COLLIE_SCOOP_IO_OUT,
  58};
  59
  60struct platform_device colliescoop_device = {
  61        .name           = "sharp-scoop",
  62        .id             = -1,
  63        .dev            = {
  64                .platform_data  = &collie_scoop_setup,
  65        },
  66        .num_resources  = ARRAY_SIZE(collie_scoop_resources),
  67        .resource       = collie_scoop_resources,
  68};
  69
  70static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
  71{
  72       .dev        = &colliescoop_device.dev,
  73       .irq        = COLLIE_IRQ_GPIO_CF_IRQ,
  74       .cd_irq     = COLLIE_IRQ_GPIO_CF_CD,
  75       .cd_irq_str = "PCMCIA0 CD",
  76},
  77};
  78
  79static struct scoop_pcmcia_config collie_pcmcia_config = {
  80        .devs         = &collie_pcmcia_scoop[0],
  81        .num_devs     = 1,
  82};
  83
  84
  85static 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 */
  94struct platform_device collie_locomo_device;
  95
  96static 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
 109static 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
 125static struct sa1100_port_fns collie_port_fns __initdata = {
 126        .set_mctrl      = collie_uart_set_mctrl,
 127        .get_mctrl      = collie_uart_get_mctrl,
 128};
 129
 130static int collie_uart_probe(struct locomo_dev *dev)
 131{
 132        return 0;
 133}
 134
 135static int collie_uart_remove(struct locomo_dev *dev)
 136{
 137        return 0;
 138}
 139
 140static 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
 149static int __init collie_uart_init(void) {
 150        return locomo_driver_register(&collie_uart_driver);
 151}
 152device_initcall(collie_uart_init);
 153
 154#endif
 155
 156
 157static struct resource locomo_resources[] = {
 158        [0] = {
 159                .start          = 0x40000000,
 160                .end            = 0x40001fff,
 161                .flags          = IORESOURCE_MEM,
 162        },
 163        [1] = {
 164                .start          = IRQ_GPIO25,
 165                .end            = IRQ_GPIO25,
 166                .flags          = IORESOURCE_IRQ,
 167        },
 168};
 169
 170struct platform_device collie_locomo_device = {
 171        .name           = "locomo",
 172        .id             = 0,
 173        .num_resources  = ARRAY_SIZE(locomo_resources),
 174        .resource       = locomo_resources,
 175};
 176
 177static struct platform_device *devices[] __initdata = {
 178        &collie_locomo_device,
 179        &colliescoop_device,
 180};
 181
 182static struct mtd_partition collie_partitions[] = {
 183        {
 184                .name           = "bootloader",
 185                .offset         = 0,
 186                .size           = 0x000C0000,
 187                .mask_flags     = MTD_WRITEABLE
 188        }, {
 189                .name           = "kernel",
 190                .offset         = MTDPART_OFS_APPEND,
 191                .size           = 0x00100000,
 192        }, {
 193                .name           = "rootfs",
 194                .offset         = MTDPART_OFS_APPEND,
 195                .size           = 0x00e20000,
 196        }
 197};
 198
 199static void collie_set_vpp(int vpp)
 200{
 201        write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
 202        if (vpp)
 203                write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
 204        else
 205                write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
 206}
 207
 208static struct flash_platform_data collie_flash_data = {
 209        .map_name       = "cfi_probe",
 210        .set_vpp        = collie_set_vpp,
 211        .parts          = collie_partitions,
 212        .nr_parts       = ARRAY_SIZE(collie_partitions),
 213};
 214
 215static struct resource collie_flash_resources[] = {
 216        {
 217                .start  = SA1100_CS0_PHYS,
 218                .end    = SA1100_CS0_PHYS + SZ_32M - 1,
 219                .flags  = IORESOURCE_MEM,
 220        }
 221};
 222
 223static void __init collie_init(void)
 224{
 225        int ret = 0;
 226
 227        /* cpu initialize */
 228        GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK |
 229                GPIO_MCP_CLK | GPIO_32_768kHz;
 230
 231        GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
 232                GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
 233                GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |
 234                COLLIE_GPIO_UCB1x00_RESET | COLLIE_GPIO_nMIC_ON |
 235                COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;
 236
 237        PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
 238                PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
 239                PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;
 240
 241        PWER = COLLIE_GPIO_AC_IN | COLLIE_GPIO_CO | COLLIE_GPIO_ON_KEY |
 242                COLLIE_GPIO_WAKEUP | COLLIE_GPIO_nREMOCON_INT | PWER_RTC;
 243
 244        PGSR = COLLIE_GPIO_nREMOCON_ON;
 245
 246        PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;
 247
 248        PCFR = PCFR_OPDE;
 249
 250
 251        platform_scoop_config = &collie_pcmcia_config;
 252
 253        ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 254        if (ret) {
 255                printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 256        }
 257
 258        sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
 259                              ARRAY_SIZE(collie_flash_resources));
 260        sa11x0_set_mcp_data(&collie_mcp_data);
 261
 262        sharpsl_save_param();
 263}
 264
 265static struct map_desc collie_io_desc[] __initdata = {
 266        {       /* 32M main flash (cs0) */
 267                .virtual        = 0xe8000000,
 268                .pfn            = __phys_to_pfn(0x00000000),
 269                .length         = 0x02000000,
 270                .type           = MT_DEVICE
 271        }, {    /* 32M boot flash (cs1) */
 272                .virtual        = 0xea000000,
 273                .pfn            = __phys_to_pfn(0x08000000),
 274                .length         = 0x02000000,
 275                .type           = MT_DEVICE
 276        }
 277};
 278
 279static void __init collie_map_io(void)
 280{
 281        sa1100_map_io();
 282        iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 283
 284#ifdef CONFIG_SHARP_LOCOMO
 285        sa1100_register_uart_fns(&collie_port_fns);
 286#endif
 287        sa1100_register_uart(0, 3);
 288        sa1100_register_uart(1, 1);
 289}
 290
 291MACHINE_START(COLLIE, "Sharp-Collie")
 292        .phys_io        = 0x80000000,
 293        .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 294        .map_io         = collie_map_io,
 295        .init_irq       = sa1100_init_irq,
 296        .timer          = &sa1100_timer,
 297        .init_machine   = collie_init,
 298MACHINE_END
 299