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_data/sa11x0-serial.h>
  20#include <linux/platform_device.h>
  21#include <linux/delay.h>
  22#include <linux/tty.h>
  23#include <linux/mtd/mtd.h>
  24#include <linux/mtd/partitions.h>
  25#include <linux/errno.h>
  26#include <linux/gpio.h>
  27#include <linux/leds.h>
  28
  29#include <mach/hardware.h>
  30#include <asm/mach-types.h>
  31#include <asm/setup.h>
  32#include <mach/irqs.h>
  33
  34#include <asm/mach/arch.h>
  35#include <asm/mach/flash.h>
  36#include <asm/mach/map.h>
  37#include <asm/hardware/sa1111.h>
  38
  39#include <mach/badge4.h>
  40
  41#include "generic.h"
  42
  43static struct resource sa1111_resources[] = {
  44        [0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
  45        [1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
  46};
  47
  48static int badge4_sa1111_enable(void *data, unsigned devid)
  49{
  50        if (devid == SA1111_DEVID_USB)
  51                badge4_set_5V(BADGE4_5V_USB, 1);
  52        return 0;
  53}
  54
  55static void badge4_sa1111_disable(void *data, unsigned devid)
  56{
  57        if (devid == SA1111_DEVID_USB)
  58                badge4_set_5V(BADGE4_5V_USB, 0);
  59}
  60
  61static struct sa1111_platform_data sa1111_info = {
  62        .disable_devs   = SA1111_DEVID_PS2_MSE,
  63        .enable         = badge4_sa1111_enable,
  64        .disable        = badge4_sa1111_disable,
  65};
  66
  67static u64 sa1111_dmamask = 0xffffffffUL;
  68
  69static struct platform_device sa1111_device = {
  70        .name           = "sa1111",
  71        .id             = 0,
  72        .dev            = {
  73                .dma_mask = &sa1111_dmamask,
  74                .coherent_dma_mask = 0xffffffff,
  75                .platform_data = &sa1111_info,
  76        },
  77        .num_resources  = ARRAY_SIZE(sa1111_resources),
  78        .resource       = sa1111_resources,
  79};
  80
  81/* LEDs */
  82struct gpio_led badge4_gpio_leds[] = {
  83        {
  84                .name                   = "badge4:red",
  85                .default_trigger        = "heartbeat",
  86                .gpio                   = 7,
  87        },
  88        {
  89                .name                   = "badge4:green",
  90                .default_trigger        = "cpu0",
  91                .gpio                   = 9,
  92        },
  93};
  94
  95static struct gpio_led_platform_data badge4_gpio_led_info = {
  96        .leds           = badge4_gpio_leds,
  97        .num_leds       = ARRAY_SIZE(badge4_gpio_leds),
  98};
  99
 100static struct platform_device badge4_leds = {
 101        .name   = "leds-gpio",
 102        .id     = -1,
 103        .dev    = {
 104                .platform_data  = &badge4_gpio_led_info,
 105        }
 106};
 107
 108static struct platform_device *devices[] __initdata = {
 109        &sa1111_device,
 110        &badge4_leds,
 111};
 112
 113static int __init badge4_sa1111_init(void)
 114{
 115        /*
 116         * Ensure that the memory bus request/grant signals are setup,
 117         * and the grant is held in its inactive state
 118         */
 119        sa1110_mb_disable();
 120
 121        /*
 122         * Probe for SA1111.
 123         */
 124        return platform_add_devices(devices, ARRAY_SIZE(devices));
 125}
 126
 127
 128/*
 129 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
 130 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 131 *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
 132 *
 133 * <or>
 134 *
 135 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
 136 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 137 *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
 138 */
 139static struct mtd_partition badge4_partitions[] = {
 140        {
 141                .name   = "BLOB boot loader",
 142                .offset = 0,
 143                .size   = 0x0000A000
 144        }, {
 145                .name   = "params",
 146                .offset = MTDPART_OFS_APPEND,
 147                .size   = 0x00006000
 148        }, {
 149                .name   = "root",
 150                .offset = MTDPART_OFS_APPEND,
 151                .size   = MTDPART_SIZ_FULL
 152        }
 153};
 154
 155static struct flash_platform_data badge4_flash_data = {
 156        .map_name       = "cfi_probe",
 157        .parts          = badge4_partitions,
 158        .nr_parts       = ARRAY_SIZE(badge4_partitions),
 159};
 160
 161static struct resource badge4_flash_resource =
 162        DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
 163
 164static int five_v_on __initdata = 0;
 165
 166static int __init five_v_on_setup(char *ignore)
 167{
 168        five_v_on = 1;
 169        return 1;
 170}
 171__setup("five_v_on", five_v_on_setup);
 172
 173
 174static int __init badge4_init(void)
 175{
 176        int ret;
 177
 178        if (!machine_is_badge4())
 179                return -ENODEV;
 180
 181        /* LCD */
 182        GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 183                 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 184                 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 185                 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 186                 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 187                 BADGE4_GPIO_GPC_VID);
 188        GPDR &= ~BADGE4_GPIO_INT_VID;
 189        GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 190                 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 191                 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 192                 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 193                 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 194                 BADGE4_GPIO_GPC_VID);
 195
 196        /* SDRAM SPD i2c */
 197        GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 198        GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 199
 200        /* uart */
 201        GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 202        GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 203
 204        /* CPLD muxsel0 input for mux/adc chip select */
 205        GPCR  = BADGE4_GPIO_MUXSEL0;
 206        GPDR |= BADGE4_GPIO_MUXSEL0;
 207
 208        /* test points: J5, J6 as inputs, J7 outputs */
 209        GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
 210        GPCR  = BADGE4_GPIO_TESTPT_J7;
 211        GPDR |= BADGE4_GPIO_TESTPT_J7;
 212
 213        /* 5V supply rail. */
 214        GPCR  = BADGE4_GPIO_PCMEN5V;            /* initially off */
 215        GPDR |= BADGE4_GPIO_PCMEN5V;
 216
 217        /* CPLD sdram type inputs; set up by blob */
 218        //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
 219        printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
 220                !!(GPLR & BADGE4_GPIO_SDTYP1),
 221                !!(GPLR & BADGE4_GPIO_SDTYP0));
 222
 223        /* SA1111 reset pin; set up by blob */
 224        //GPSR  = BADGE4_GPIO_SA1111_NRST;
 225        //GPDR |= BADGE4_GPIO_SA1111_NRST;
 226
 227
 228        /* power management cruft */
 229        PGSR = 0;
 230        PWER = 0;
 231        PCFR = 0;
 232        PSDR = 0;
 233
 234        PWER |= PWER_GPIO26;    /* wake up on an edge from TESTPT_J5 */
 235        PWER |= PWER_RTC;       /* wake up if rtc fires */
 236
 237        /* drive sa1111_nrst during sleep */
 238        PGSR |= BADGE4_GPIO_SA1111_NRST;
 239        /* drive CPLD as is during sleep */
 240        PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
 241
 242
 243        /* Now bring up the SA-1111. */
 244        ret = badge4_sa1111_init();
 245        if (ret < 0)
 246                printk(KERN_ERR
 247                        "%s: SA-1111 initialization failed (%d)\n",
 248                        __func__, ret);
 249
 250
 251        /* maybe turn on 5v0 from the start */
 252        badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
 253
 254        sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
 255
 256        return 0;
 257}
 258
 259arch_initcall(badge4_init);
 260
 261
 262static unsigned badge4_5V_bitmap = 0;
 263
 264void badge4_set_5V(unsigned subsystem, int on)
 265{
 266        unsigned long flags;
 267        unsigned old_5V_bitmap;
 268
 269        local_irq_save(flags);
 270
 271        old_5V_bitmap = badge4_5V_bitmap;
 272
 273        if (on) {
 274                badge4_5V_bitmap |= subsystem;
 275        } else {
 276                badge4_5V_bitmap &= ~subsystem;
 277        }
 278
 279        /* detect on->off and off->on transitions */
 280        if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
 281                /* was off, now on */
 282                printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
 283                GPSR = BADGE4_GPIO_PCMEN5V;
 284        } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
 285                /* was on, now off */
 286                printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
 287                GPCR = BADGE4_GPIO_PCMEN5V;
 288        }
 289
 290        local_irq_restore(flags);
 291}
 292EXPORT_SYMBOL(badge4_set_5V);
 293
 294
 295static struct map_desc badge4_io_desc[] __initdata = {
 296        {       /* SRAM  bank 1 */
 297                .virtual        = 0xf1000000,
 298                .pfn            = __phys_to_pfn(0x08000000),
 299                .length         = 0x00100000,
 300                .type           = MT_DEVICE
 301        }, {    /* SRAM  bank 2 */
 302                .virtual        = 0xf2000000,
 303                .pfn            = __phys_to_pfn(0x10000000),
 304                .length         = 0x00100000,
 305                .type           = MT_DEVICE
 306        }
 307};
 308
 309static void
 310badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 311{
 312        if (!state) {
 313                Ser1SDCR0 |= SDCR0_UART;
 314        }
 315}
 316
 317static struct sa1100_port_fns badge4_port_fns __initdata = {
 318        //.get_mctrl    = badge4_get_mctrl,
 319        //.set_mctrl    = badge4_set_mctrl,
 320        .pm             = badge4_uart_pm,
 321};
 322
 323static void __init badge4_map_io(void)
 324{
 325        sa1100_map_io();
 326        iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
 327
 328        sa1100_register_uart_fns(&badge4_port_fns);
 329        sa1100_register_uart(0, 3);
 330        sa1100_register_uart(1, 1);
 331}
 332
 333MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
 334        .atag_offset    = 0x100,
 335        .map_io         = badge4_map_io,
 336        .nr_irqs        = SA1100_NR_IRQS,
 337        .init_irq       = sa1100_init_irq,
 338        .init_late      = sa11x0_init_late,
 339        .init_time      = sa1100_timer_init,
 340#ifdef CONFIG_SA1111
 341        .dma_zone_size  = SZ_1M,
 342#endif
 343        .restart        = sa11x0_restart,
 344MACHINE_END
 345