LXR linux/arch/arm/mach-sa1100/badge4.c

   1/*
   2 * linux/arch/arm/mach-sa1100/badge4.c
   3 *
   4 * BadgePAD 4 specific initialization
   5 *
   6 *   Tim Connors <connors@hpl.hp.com>
   7 *   Christopher Hoover <ch@hpl.hp.com>
   8 *
   9 * Copyright (C) 2002 Hewlett-Packard Company
  10 *
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of the GNU General Public License version 2 as
  13 * published by the Free Software Foundation.
  14 *
  15 */
  16#include <linux/module.h>
  17#include <linux/init.h>
  18#include <linux/kernel.h>
  19#include <linux/platform_device.h>
  20#include <linux/delay.h>
  21#include <linux/tty.h>
  22#include <linux/mtd/mtd.h>
  23#include <linux/mtd/partitions.h>
  24#include <linux/errno.h>
  25
  26#include <mach/hardware.h>
  27#include <asm/mach-types.h>
  28#include <asm/setup.h>
  29#include <mach/irqs.h>
  30
  31#include <asm/mach/arch.h>
  32#include <asm/mach/flash.h>
  33#include <asm/mach/map.h>
  34#include <asm/hardware/sa1111.h>
  35#include <asm/mach/serial_sa1100.h>
  36
  37#include <mach/badge4.h>
  38
  39#include "generic.h"
  40
  41static struct resource sa1111_resources[] = {
  42        [0] = {
  43                .start          = BADGE4_SA1111_BASE,
  44                .end            = BADGE4_SA1111_BASE + 0x00001fff,
  45                .flags          = IORESOURCE_MEM,
  46        },
  47        [1] = {
  48                .start          = BADGE4_IRQ_GPIO_SA1111,
  49                .end            = BADGE4_IRQ_GPIO_SA1111,
  50                .flags          = IORESOURCE_IRQ,
  51        },
  52};
  53
  54static struct sa1111_platform_data sa1111_info = {
  55        .irq_base       = IRQ_BOARD_END,
  56};
  57
  58static u64 sa1111_dmamask = 0xffffffffUL;
  59
  60static struct platform_device sa1111_device = {
  61        .name           = "sa1111",
  62        .id             = 0,
  63        .dev            = {
  64                .dma_mask = &sa1111_dmamask,
  65                .coherent_dma_mask = 0xffffffff,
  66                .platform_data = &sa1111_info,
  67        },
  68        .num_resources  = ARRAY_SIZE(sa1111_resources),
  69        .resource       = sa1111_resources,
  70};
  71
  72static struct platform_device *devices[] __initdata = {
  73        &sa1111_device,
  74};
  75
  76static int __init badge4_sa1111_init(void)
  77{
  78        /*
  79         * Ensure that the memory bus request/grant signals are setup,
  80         * and the grant is held in its inactive state
  81         */
  82        sa1110_mb_disable();
  83
  84        /*
  85         * Probe for SA1111.
  86         */
  87        return platform_add_devices(devices, ARRAY_SIZE(devices));
  88}
  89
  90
  91/*
  92 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
  93 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
  94 *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
  95 *
  96 * <or>
  97 *
  98 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
  99 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 100 *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
 101 */
 102static struct mtd_partition badge4_partitions[] = {
 103        {
 104                .name   = "BLOB boot loader",
 105                .offset = 0,
 106                .size   = 0x0000A000
 107        }, {
 108                .name   = "params",
 109                .offset = MTDPART_OFS_APPEND,
 110                .size   = 0x00006000
 111        }, {
 112                .name   = "root",
 113                .offset = MTDPART_OFS_APPEND,
 114                .size   = MTDPART_SIZ_FULL
 115        }
 116};
 117
 118static struct flash_platform_data badge4_flash_data = {
 119        .map_name       = "cfi_probe",
 120        .parts          = badge4_partitions,
 121        .nr_parts       = ARRAY_SIZE(badge4_partitions),
 122};
 123
 124static struct resource badge4_flash_resource = {
 125        .start          = SA1100_CS0_PHYS,
 126        .end            = SA1100_CS0_PHYS + SZ_64M - 1,
 127        .flags          = IORESOURCE_MEM,
 128};
 129
 130static int five_v_on __initdata = 0;
 131
 132static int __init five_v_on_setup(char *ignore)
 133{
 134        five_v_on = 1;
 135        return 1;
 136}
 137__setup("five_v_on", five_v_on_setup);
 138
 139
 140static int __init badge4_init(void)
 141{
 142        int ret;
 143
 144        if (!machine_is_badge4())
 145                return -ENODEV;
 146
 147        /* LCD */
 148        GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 149                 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 150                 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 151                 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 152                 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 153                 BADGE4_GPIO_GPC_VID);
 154        GPDR &= ~BADGE4_GPIO_INT_VID;
 155        GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 156                 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 157                 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 158                 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 159                 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 160                 BADGE4_GPIO_GPC_VID);
 161
 162        /* SDRAM SPD i2c */
 163        GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 164        GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 165
 166        /* uart */
 167        GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 168        GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 169
 170        /* CPLD muxsel0 input for mux/adc chip select */
 171        GPCR  = BADGE4_GPIO_MUXSEL0;
 172        GPDR |= BADGE4_GPIO_MUXSEL0;
 173
 174        /* test points: J5, J6 as inputs, J7 outputs */
 175        GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
 176        GPCR  = BADGE4_GPIO_TESTPT_J7;
 177        GPDR |= BADGE4_GPIO_TESTPT_J7;
 178
 179        /* 5V supply rail. */
 180        GPCR  = BADGE4_GPIO_PCMEN5V;            /* initially off */
 181        GPDR |= BADGE4_GPIO_PCMEN5V;
 182
 183        /* CPLD sdram type inputs; set up by blob */
 184        //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
 185        printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
 186                !!(GPLR & BADGE4_GPIO_SDTYP1),
 187                !!(GPLR & BADGE4_GPIO_SDTYP0));
 188
 189        /* SA1111 reset pin; set up by blob */
 190        //GPSR  = BADGE4_GPIO_SA1111_NRST;
 191        //GPDR |= BADGE4_GPIO_SA1111_NRST;
 192
 193
 194        /* power management cruft */
 195        PGSR = 0;
 196        PWER = 0;
 197        PCFR = 0;
 198        PSDR = 0;
 199
 200        PWER |= PWER_GPIO26;    /* wake up on an edge from TESTPT_J5 */
 201        PWER |= PWER_RTC;       /* wake up if rtc fires */
 202
 203        /* drive sa1111_nrst during sleep */
 204        PGSR |= BADGE4_GPIO_SA1111_NRST;
 205        /* drive CPLD as is during sleep */
 206        PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
 207
 208
 209        /* Now bring up the SA-1111. */
 210        ret = badge4_sa1111_init();
 211        if (ret < 0)
 212                printk(KERN_ERR
 213                        "%s: SA-1111 initialization failed (%d)\n",
 214                        __func__, ret);
 215
 216
 217        /* maybe turn on 5v0 from the start */
 218        badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
 219
 220        sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
 221
 222        return 0;
 223}
 224
 225arch_initcall(badge4_init);
 226
 227
 228static unsigned badge4_5V_bitmap = 0;
 229
 230void badge4_set_5V(unsigned subsystem, int on)
 231{
 232        unsigned long flags;
 233        unsigned old_5V_bitmap;
 234
 235        local_irq_save(flags);
 236
 237        old_5V_bitmap = badge4_5V_bitmap;
 238
 239        if (on) {
 240                badge4_5V_bitmap |= subsystem;
 241        } else {
 242                badge4_5V_bitmap &= ~subsystem;
 243        }
 244
 245        /* detect on->off and off->on transitions */
 246        if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
 247                /* was off, now on */
 248                printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
 249                GPSR = BADGE4_GPIO_PCMEN5V;
 250        } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
 251                /* was on, now off */
 252                printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
 253                GPCR = BADGE4_GPIO_PCMEN5V;
 254        }
 255
 256        local_irq_restore(flags);
 257}
 258EXPORT_SYMBOL(badge4_set_5V);
 259
 260
 261static struct map_desc badge4_io_desc[] __initdata = {
 262        {       /* SRAM  bank 1 */
 263                .virtual        = 0xf1000000,
 264                .pfn            = __phys_to_pfn(0x08000000),
 265                .length         = 0x00100000,
 266                .type           = MT_DEVICE
 267        }, {    /* SRAM  bank 2 */
 268                .virtual        = 0xf2000000,
 269                .pfn            = __phys_to_pfn(0x10000000),
 270                .length         = 0x00100000,
 271                .type           = MT_DEVICE
 272        }, {    /* SA-1111      */
 273                .virtual        = 0xf4000000,
 274                .pfn            = __phys_to_pfn(0x48000000),
 275                .length         = 0x00100000,
 276                .type           = MT_DEVICE
 277        }
 278};
 279
 280static void
 281badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 282{
 283        if (!state) {
 284                Ser1SDCR0 |= SDCR0_UART;
 285        }
 286}
 287
 288static struct sa1100_port_fns badge4_port_fns __initdata = {
 289        //.get_mctrl    = badge4_get_mctrl,
 290        //.set_mctrl    = badge4_set_mctrl,
 291        .pm             = badge4_uart_pm,
 292};
 293
 294static void __init badge4_map_io(void)
 295{
 296        sa1100_map_io();
 297        iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
 298
 299        sa1100_register_uart_fns(&badge4_port_fns);
 300        sa1100_register_uart(0, 3);
 301        sa1100_register_uart(1, 1);
 302}
 303
 304MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
 305        .boot_params    = 0xc0000100,
 306        .map_io         = badge4_map_io,
 307        .init_irq       = sa1100_init_irq,
 308        .timer          = &sa1100_timer,
 309MACHINE_END
 310