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

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * linux/arch/arm/mach-sa1100/badge4.c
   4 *
   5 * BadgePAD 4 specific initialization
   6 *
   7 *   Tim Connors <connors@hpl.hp.com>
   8 *   Christopher Hoover <ch@hpl.hp.com>
   9 *
  10 * Copyright (C) 2002 Hewlett-Packard Company
  11 */
  12#include <linux/module.h>
  13#include <linux/init.h>
  14#include <linux/kernel.h>
  15#include <linux/platform_data/sa11x0-serial.h>
  16#include <linux/platform_device.h>
  17#include <linux/delay.h>
  18#include <linux/tty.h>
  19#include <linux/mtd/mtd.h>
  20#include <linux/mtd/partitions.h>
  21#include <linux/errno.h>
  22#include <linux/gpio.h>
  23#include <linux/leds.h>
  24
  25#include <mach/hardware.h>
  26#include <asm/mach-types.h>
  27#include <asm/setup.h>
  28#include <mach/irqs.h>
  29
  30#include <asm/mach/arch.h>
  31#include <asm/mach/flash.h>
  32#include <asm/mach/map.h>
  33#include <asm/hardware/sa1111.h>
  34
  35#include <mach/badge4.h>
  36
  37#include "generic.h"
  38
  39static struct resource sa1111_resources[] = {
  40        [0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
  41        [1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
  42};
  43
  44static int badge4_sa1111_enable(void *data, unsigned devid)
  45{
  46        if (devid == SA1111_DEVID_USB)
  47                badge4_set_5V(BADGE4_5V_USB, 1);
  48        return 0;
  49}
  50
  51static void badge4_sa1111_disable(void *data, unsigned devid)
  52{
  53        if (devid == SA1111_DEVID_USB)
  54                badge4_set_5V(BADGE4_5V_USB, 0);
  55}
  56
  57static struct sa1111_platform_data sa1111_info = {
  58        .disable_devs   = SA1111_DEVID_PS2_MSE,
  59        .enable         = badge4_sa1111_enable,
  60        .disable        = badge4_sa1111_disable,
  61};
  62
  63static u64 sa1111_dmamask = 0xffffffffUL;
  64
  65static struct platform_device sa1111_device = {
  66        .name           = "sa1111",
  67        .id             = 0,
  68        .dev            = {
  69                .dma_mask = &sa1111_dmamask,
  70                .coherent_dma_mask = 0xffffffff,
  71                .platform_data = &sa1111_info,
  72        },
  73        .num_resources  = ARRAY_SIZE(sa1111_resources),
  74        .resource       = sa1111_resources,
  75};
  76
  77/* LEDs */
  78struct gpio_led badge4_gpio_leds[] = {
  79        {
  80                .name                   = "badge4:red",
  81                .default_trigger        = "heartbeat",
  82                .gpio                   = 7,
  83        },
  84        {
  85                .name                   = "badge4:green",
  86                .default_trigger        = "cpu0",
  87                .gpio                   = 9,
  88        },
  89};
  90
  91static struct gpio_led_platform_data badge4_gpio_led_info = {
  92        .leds           = badge4_gpio_leds,
  93        .num_leds       = ARRAY_SIZE(badge4_gpio_leds),
  94};
  95
  96static struct platform_device badge4_leds = {
  97        .name   = "leds-gpio",
  98        .id     = -1,
  99        .dev    = {
 100                .platform_data  = &badge4_gpio_led_info,
 101        }
 102};
 103
 104static struct platform_device *devices[] __initdata = {
 105        &sa1111_device,
 106        &badge4_leds,
 107};
 108
 109static int __init badge4_sa1111_init(void)
 110{
 111        /*
 112         * Ensure that the memory bus request/grant signals are setup,
 113         * and the grant is held in its inactive state
 114         */
 115        sa1110_mb_disable();
 116
 117        /*
 118         * Probe for SA1111.
 119         */
 120        return platform_add_devices(devices, ARRAY_SIZE(devices));
 121}
 122
 123
 124/*
 125 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
 126 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 127 *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
 128 *
 129 * <or>
 130 *
 131 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
 132 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 133 *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
 134 */
 135static struct mtd_partition badge4_partitions[] = {
 136        {
 137                .name   = "BLOB boot loader",
 138                .offset = 0,
 139                .size   = 0x0000A000
 140        }, {
 141                .name   = "params",
 142                .offset = MTDPART_OFS_APPEND,
 143                .size   = 0x00006000
 144        }, {
 145                .name   = "root",
 146                .offset = MTDPART_OFS_APPEND,
 147                .size   = MTDPART_SIZ_FULL
 148        }
 149};
 150
 151static struct flash_platform_data badge4_flash_data = {
 152        .map_name       = "cfi_probe",
 153        .parts          = badge4_partitions,
 154        .nr_parts       = ARRAY_SIZE(badge4_partitions),
 155};
 156
 157static struct resource badge4_flash_resource =
 158        DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
 159
 160static int five_v_on __initdata = 0;
 161
 162static int __init five_v_on_setup(char *ignore)
 163{
 164        five_v_on = 1;
 165        return 1;
 166}
 167__setup("five_v_on", five_v_on_setup);
 168
 169
 170static int __init badge4_init(void)
 171{
 172        int ret;
 173
 174        if (!machine_is_badge4())
 175                return -ENODEV;
 176
 177        /* LCD */
 178        GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 179                 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 180                 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 181                 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 182                 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 183                 BADGE4_GPIO_GPC_VID);
 184        GPDR &= ~BADGE4_GPIO_INT_VID;
 185        GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 186                 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 187                 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 188                 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 189                 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 190                 BADGE4_GPIO_GPC_VID);
 191
 192        /* SDRAM SPD i2c */
 193        GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 194        GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 195
 196        /* uart */
 197        GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 198        GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 199
 200        /* CPLD muxsel0 input for mux/adc chip select */
 201        GPCR  = BADGE4_GPIO_MUXSEL0;
 202        GPDR |= BADGE4_GPIO_MUXSEL0;
 203
 204        /* test points: J5, J6 as inputs, J7 outputs */
 205        GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
 206        GPCR  = BADGE4_GPIO_TESTPT_J7;
 207        GPDR |= BADGE4_GPIO_TESTPT_J7;
 208
 209        /* 5V supply rail. */
 210        GPCR  = BADGE4_GPIO_PCMEN5V;            /* initially off */
 211        GPDR |= BADGE4_GPIO_PCMEN5V;
 212
 213        /* CPLD sdram type inputs; set up by blob */
 214        //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
 215        printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
 216                !!(GPLR & BADGE4_GPIO_SDTYP1),
 217                !!(GPLR & BADGE4_GPIO_SDTYP0));
 218
 219        /* SA1111 reset pin; set up by blob */
 220        //GPSR  = BADGE4_GPIO_SA1111_NRST;
 221        //GPDR |= BADGE4_GPIO_SA1111_NRST;
 222
 223
 224        /* power management cruft */
 225        PGSR = 0;
 226        PWER = 0;
 227        PCFR = 0;
 228        PSDR = 0;
 229
 230        PWER |= PWER_GPIO26;    /* wake up on an edge from TESTPT_J5 */
 231        PWER |= PWER_RTC;       /* wake up if rtc fires */
 232
 233        /* drive sa1111_nrst during sleep */
 234        PGSR |= BADGE4_GPIO_SA1111_NRST;
 235        /* drive CPLD as is during sleep */
 236        PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
 237
 238
 239        /* Now bring up the SA-1111. */
 240        ret = badge4_sa1111_init();
 241        if (ret < 0)
 242                printk(KERN_ERR
 243                        "%s: SA-1111 initialization failed (%d)\n",
 244                        __func__, ret);
 245
 246
 247        /* maybe turn on 5v0 from the start */
 248        badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
 249
 250        sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
 251
 252        return 0;
 253}
 254
 255arch_initcall(badge4_init);
 256
 257
 258static unsigned badge4_5V_bitmap = 0;
 259
 260void badge4_set_5V(unsigned subsystem, int on)
 261{
 262        unsigned long flags;
 263        unsigned old_5V_bitmap;
 264
 265        local_irq_save(flags);
 266
 267        old_5V_bitmap = badge4_5V_bitmap;
 268
 269        if (on) {
 270                badge4_5V_bitmap |= subsystem;
 271        } else {
 272                badge4_5V_bitmap &= ~subsystem;
 273        }
 274
 275        /* detect on->off and off->on transitions */
 276        if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
 277                /* was off, now on */
 278                printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
 279                GPSR = BADGE4_GPIO_PCMEN5V;
 280        } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
 281                /* was on, now off */
 282                printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
 283                GPCR = BADGE4_GPIO_PCMEN5V;
 284        }
 285
 286        local_irq_restore(flags);
 287}
 288EXPORT_SYMBOL(badge4_set_5V);
 289
 290
 291static struct map_desc badge4_io_desc[] __initdata = {
 292        {       /* SRAM  bank 1 */
 293                .virtual        = 0xf1000000,
 294                .pfn            = __phys_to_pfn(0x08000000),
 295                .length         = 0x00100000,
 296                .type           = MT_DEVICE
 297        }, {    /* SRAM  bank 2 */
 298                .virtual        = 0xf2000000,
 299                .pfn            = __phys_to_pfn(0x10000000),
 300                .length         = 0x00100000,
 301                .type           = MT_DEVICE
 302        }
 303};
 304
 305static void
 306badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 307{
 308        if (!state) {
 309                Ser1SDCR0 |= SDCR0_UART;
 310        }
 311}
 312
 313static struct sa1100_port_fns badge4_port_fns __initdata = {
 314        .pm             = badge4_uart_pm,
 315};
 316
 317static void __init badge4_map_io(void)
 318{
 319        sa1100_map_io();
 320        iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
 321
 322        sa1100_register_uart_fns(&badge4_port_fns);
 323        sa1100_register_uart(0, 3);
 324        sa1100_register_uart(1, 1);
 325}
 326
 327MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
 328        .atag_offset    = 0x100,
 329        .map_io         = badge4_map_io,
 330        .nr_irqs        = SA1100_NR_IRQS,
 331        .init_irq       = sa1100_init_irq,
 332        .init_late      = sa11x0_init_late,
 333        .init_time      = sa1100_timer_init,
 334#ifdef CONFIG_SA1111
 335        .dma_zone_size  = SZ_1M,
 336#endif
 337        .restart        = sa11x0_restart,
 338MACHINE_END
 339