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
  41 static struct resource sa1111_resources[] = {
  42         [0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
  43         [1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
  44 };
  45
  46 static int badge4_sa1111_enable(void *data, unsigned devid)
  47 {
  48         if (devid == SA1111_DEVID_USB)
  49                 badge4_set_5V(BADGE4_5V_USB, 1);
  50         return 0;
  51 }
  52
  53 static void badge4_sa1111_disable(void *data, unsigned devid)
  54 {
  55         if (devid == SA1111_DEVID_USB)
  56                 badge4_set_5V(BADGE4_5V_USB, 0);
  57 }
  58
  59 static struct sa1111_platform_data sa1111_info = {
  60         .disable_devs   = SA1111_DEVID_PS2_MSE,
  61         .enable         = badge4_sa1111_enable,
  62         .disable        = badge4_sa1111_disable,
  63 };
  64
  65 static u64 sa1111_dmamask = 0xffffffffUL;
  66
  67 static struct platform_device sa1111_device = {
  68         .name           = "sa1111",
  69         .id             = 0,
  70         .dev            = {
  71                 .dma_mask = &sa1111_dmamask,
  72                 .coherent_dma_mask = 0xffffffff,
  73                 .platform_data = &sa1111_info,
  74         },
  75         .num_resources  = ARRAY_SIZE(sa1111_resources),
  76         .resource       = sa1111_resources,
  77 };
  78
  79 static struct platform_device *devices[] __initdata = {
  80         &sa1111_device,
  81 };
  82
  83 static int __init badge4_sa1111_init(void)
  84 {
  85         /*
  86          * Ensure that the memory bus request/grant signals are setup,
  87          * and the grant is held in its inactive state
  88          */
  89         sa1110_mb_disable();
  90
  91         /*
  92          * Probe for SA1111.
  93          */
  94         return platform_add_devices(devices, ARRAY_SIZE(devices));
  95 }
  96
  97
  98 /*
  99  * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
 100  *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 101  *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
 102  *
 103  * <or>
 104  *
 105  * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
 106  *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 107  *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
 108  */
 109 static struct mtd_partition badge4_partitions[] = {
 110         {
 111                 .name   = "BLOB boot loader",
 112                 .offset = 0,
 113                 .size   = 0x0000A000
 114         }, {
 115                 .name   = "params",
 116                 .offset = MTDPART_OFS_APPEND,
 117                 .size   = 0x00006000
 118         }, {
 119                 .name   = "root",
 120                 .offset = MTDPART_OFS_APPEND,
 121                 .size   = MTDPART_SIZ_FULL
 122         }
 123 };
 124
 125 static struct flash_platform_data badge4_flash_data = {
 126         .map_name       = "cfi_probe",
 127         .parts          = badge4_partitions,
 128         .nr_parts       = ARRAY_SIZE(badge4_partitions),
 129 };
 130
 131 static struct resource badge4_flash_resource =
 132         DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
 133
 134 static int five_v_on __initdata = 0;
 135
 136 static int __init five_v_on_setup(char *ignore)
 137 {
 138         five_v_on = 1;
 139         return 1;
 140 }
 141 __setup("five_v_on", five_v_on_setup);
 142
 143
 144 static int __init badge4_init(void)
 145 {
 146         int ret;
 147
 148         if (!machine_is_badge4())
 149                 return -ENODEV;
 150
 151         /* LCD */
 152         GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 153                  BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 154                  BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 155                  BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 156                  BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 157                  BADGE4_GPIO_GPC_VID);
 158         GPDR &= ~BADGE4_GPIO_INT_VID;
 159         GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 160                  BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 161                  BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 162                  BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 163                  BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 164                  BADGE4_GPIO_GPC_VID);
 165
 166         /* SDRAM SPD i2c */
 167         GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 168         GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 169
 170         /* uart */
 171         GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 172         GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 173
 174         /* CPLD muxsel0 input for mux/adc chip select */
 175         GPCR  = BADGE4_GPIO_MUXSEL0;
 176         GPDR |= BADGE4_GPIO_MUXSEL0;
 177
 178         /* test points: J5, J6 as inputs, J7 outputs */
 179         GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
 180         GPCR  = BADGE4_GPIO_TESTPT_J7;
 181         GPDR |= BADGE4_GPIO_TESTPT_J7;
 182
 183         /* 5V supply rail. */
 184         GPCR  = BADGE4_GPIO_PCMEN5V;            /* initially off */
 185         GPDR |= BADGE4_GPIO_PCMEN5V;
 186
 187         /* CPLD sdram type inputs; set up by blob */
 188         //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
 189         printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
 190                 !!(GPLR & BADGE4_GPIO_SDTYP1),
 191                 !!(GPLR & BADGE4_GPIO_SDTYP0));
 192
 193         /* SA1111 reset pin; set up by blob */
 194         //GPSR  = BADGE4_GPIO_SA1111_NRST;
 195         //GPDR |= BADGE4_GPIO_SA1111_NRST;
 196
 197
 198         /* power management cruft */
 199         PGSR = 0;
 200         PWER = 0;
 201         PCFR = 0;
 202         PSDR = 0;
 203
 204         PWER |= PWER_GPIO26;    /* wake up on an edge from TESTPT_J5 */
 205         PWER |= PWER_RTC;       /* wake up if rtc fires */
 206
 207         /* drive sa1111_nrst during sleep */
 208         PGSR |= BADGE4_GPIO_SA1111_NRST;
 209         /* drive CPLD as is during sleep */
 210         PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
 211
 212
 213         /* Now bring up the SA-1111. */
 214         ret = badge4_sa1111_init();
 215         if (ret < 0)
 216                 printk(KERN_ERR
 217                         "%s: SA-1111 initialization failed (%d)\n",
 218                         __func__, ret);
 219
 220
 221         /* maybe turn on 5v0 from the start */
 222         badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
 223
 224         sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
 225
 226         return 0;
 227 }
 228
 229 arch_initcall(badge4_init);
 230
 231
 232 static unsigned badge4_5V_bitmap = 0;
 233
 234 void badge4_set_5V(unsigned subsystem, int on)
 235 {
 236         unsigned long flags;
 237         unsigned old_5V_bitmap;
 238
 239         local_irq_save(flags);
 240
 241         old_5V_bitmap = badge4_5V_bitmap;
 242
 243         if (on) {
 244                 badge4_5V_bitmap |= subsystem;
 245         } else {
 246                 badge4_5V_bitmap &= ~subsystem;
 247         }
 248
 249         /* detect on->off and off->on transitions */
 250         if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
 251                 /* was off, now on */
 252                 printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
 253                 GPSR = BADGE4_GPIO_PCMEN5V;
 254         } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
 255                 /* was on, now off */
 256                 printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
 257                 GPCR = BADGE4_GPIO_PCMEN5V;
 258         }
 259
 260         local_irq_restore(flags);
 261 }
 262 EXPORT_SYMBOL(badge4_set_5V);
 263
 264
 265 static struct map_desc badge4_io_desc[] __initdata = {
 266         {       /* SRAM  bank 1 */
 267                 .virtual        = 0xf1000000,
 268                 .pfn            = __phys_to_pfn(0x08000000),
 269                 .length         = 0x00100000,
 270                 .type           = MT_DEVICE
 271         }, {    /* SRAM  bank 2 */
 272                 .virtual        = 0xf2000000,
 273                 .pfn            = __phys_to_pfn(0x10000000),
 274                 .length         = 0x00100000,
 275                 .type           = MT_DEVICE
 276         }
 277 };
 278
 279 static void
 280 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 281 {
 282         if (!state) {
 283                 Ser1SDCR0 |= SDCR0_UART;
 284         }
 285 }
 286
 287 static struct sa1100_port_fns badge4_port_fns __initdata = {
 288         //.get_mctrl    = badge4_get_mctrl,
 289         //.set_mctrl    = badge4_set_mctrl,
 290         .pm             = badge4_uart_pm,
 291 };
 292
 293 static void __init badge4_map_io(void)
 294 {
 295         sa1100_map_io();
 296         iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
 297
 298         sa1100_register_uart_fns(&badge4_port_fns);
 299         sa1100_register_uart(0, 3);
 300         sa1100_register_uart(1, 1);
 301 }
 302
 303 MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
 304         .atag_offset    = 0x100,
 305         .map_io         = badge4_map_io,
 306         .nr_irqs        = SA1100_NR_IRQS,
 307         .init_irq       = sa1100_init_irq,
 308         .timer          = &sa1100_timer,
 309 #ifdef CONFIG_SA1111
 310         .dma_zone_size  = SZ_1M,
 311 #endif
 312         .restart        = sa11x0_restart,
 313 MACHINE_END