kernel/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
  43 static struct resource sa1111_resources[] = {
  44         [0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
  45         [1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
  46 };
  47
  48 static 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
  55 static 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
  61 static 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
  67 static u64 sa1111_dmamask = 0xffffffffUL;
  68
  69 static 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 */
  82 struct 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
  95 static struct gpio_led_platform_data badge4_gpio_led_info = {
  96         .leds           = badge4_gpio_leds,
  97         .num_leds       = ARRAY_SIZE(badge4_gpio_leds),
  98 };
  99
 100 static struct platform_device badge4_leds = {
 101         .name   = "leds-gpio",
 102         .id     = -1,
 103         .dev    = {
 104                 .platform_data  = &badge4_gpio_led_info,
 105         }
 106 };
 107
 108 static struct platform_device *devices[] __initdata = {
 109         &sa1111_device,
 110         &badge4_leds,
 111 };
 112
 113 static 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  */
 139 static 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
 155 static 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
 161 static struct resource badge4_flash_resource =
 162         DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
 163
 164 static int five_v_on __initdata = 0;
 165
 166 static 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
 174 static 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
 259 arch_initcall(badge4_init);
 260
 261
 262 static unsigned badge4_5V_bitmap = 0;
 263
 264 void 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 }
 292 EXPORT_SYMBOL(badge4_set_5V);
 293
 294
 295 static 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
 309 static void
 310 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 311 {
 312         if (!state) {
 313                 Ser1SDCR0 |= SDCR0_UART;
 314         }
 315 }
 316
 317 static 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
 323 static 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
 333 MACHINE_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,
 344 MACHINE_END