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] = {
  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
  54 static int badge4_sa1111_enable(void *data, unsigned devid)
  55 {
  56         if (devid == SA1111_DEVID_USB)
  57                 badge4_set_5V(BADGE4_5V_USB, 1);
  58         return 0;
  59 }
  60
  61 static void badge4_sa1111_disable(void *data, unsigned devid)
  62 {
  63         if (devid == SA1111_DEVID_USB)
  64                 badge4_set_5V(BADGE4_5V_USB, 0);
  65 }
  66
  67 static struct sa1111_platform_data sa1111_info = {
  68         .irq_base       = IRQ_BOARD_END,
  69         .disable_devs   = SA1111_DEVID_PS2_MSE,
  70         .enable         = badge4_sa1111_enable,
  71         .disable        = badge4_sa1111_disable,
  72 };
  73
  74 static u64 sa1111_dmamask = 0xffffffffUL;
  75
  76 static struct platform_device sa1111_device = {
  77         .name           = "sa1111",
  78         .id             = 0,
  79         .dev            = {
  80                 .dma_mask = &sa1111_dmamask,
  81                 .coherent_dma_mask = 0xffffffff,
  82                 .platform_data = &sa1111_info,
  83         },
  84         .num_resources  = ARRAY_SIZE(sa1111_resources),
  85         .resource       = sa1111_resources,
  86 };
  87
  88 static struct platform_device *devices[] __initdata = {
  89         &sa1111_device,
  90 };
  91
  92 static int __init badge4_sa1111_init(void)
  93 {
  94         /*
  95          * Ensure that the memory bus request/grant signals are setup,
  96          * and the grant is held in its inactive state
  97          */
  98         sa1110_mb_disable();
  99
 100         /*
 101          * Probe for SA1111.
 102          */
 103         return platform_add_devices(devices, ARRAY_SIZE(devices));
 104 }
 105
 106
 107 /*
 108  * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
 109  *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 110  *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
 111  *
 112  * <or>
 113  *
 114  * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
 115  *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 116  *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
 117  */
 118 static struct mtd_partition badge4_partitions[] = {
 119         {
 120                 .name   = "BLOB boot loader",
 121                 .offset = 0,
 122                 .size   = 0x0000A000
 123         }, {
 124                 .name   = "params",
 125                 .offset = MTDPART_OFS_APPEND,
 126                 .size   = 0x00006000
 127         }, {
 128                 .name   = "root",
 129                 .offset = MTDPART_OFS_APPEND,
 130                 .size   = MTDPART_SIZ_FULL
 131         }
 132 };
 133
 134 static struct flash_platform_data badge4_flash_data = {
 135         .map_name       = "cfi_probe",
 136         .parts          = badge4_partitions,
 137         .nr_parts       = ARRAY_SIZE(badge4_partitions),
 138 };
 139
 140 static struct resource badge4_flash_resource = {
 141         .start          = SA1100_CS0_PHYS,
 142         .end            = SA1100_CS0_PHYS + SZ_64M - 1,
 143         .flags          = IORESOURCE_MEM,
 144 };
 145
 146 static int five_v_on __initdata = 0;
 147
 148 static int __init five_v_on_setup(char *ignore)
 149 {
 150         five_v_on = 1;
 151         return 1;
 152 }
 153 __setup("five_v_on", five_v_on_setup);
 154
 155
 156 static int __init badge4_init(void)
 157 {
 158         int ret;
 159
 160         if (!machine_is_badge4())
 161                 return -ENODEV;
 162
 163         /* LCD */
 164         GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 165                  BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 166                  BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 167                  BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 168                  BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 169                  BADGE4_GPIO_GPC_VID);
 170         GPDR &= ~BADGE4_GPIO_INT_VID;
 171         GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
 172                  BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
 173                  BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
 174                  BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
 175                  BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
 176                  BADGE4_GPIO_GPC_VID);
 177
 178         /* SDRAM SPD i2c */
 179         GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 180         GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
 181
 182         /* uart */
 183         GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 184         GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
 185
 186         /* CPLD muxsel0 input for mux/adc chip select */
 187         GPCR  = BADGE4_GPIO_MUXSEL0;
 188         GPDR |= BADGE4_GPIO_MUXSEL0;
 189
 190         /* test points: J5, J6 as inputs, J7 outputs */
 191         GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
 192         GPCR  = BADGE4_GPIO_TESTPT_J7;
 193         GPDR |= BADGE4_GPIO_TESTPT_J7;
 194
 195         /* 5V supply rail. */
 196         GPCR  = BADGE4_GPIO_PCMEN5V;            /* initially off */
 197         GPDR |= BADGE4_GPIO_PCMEN5V;
 198
 199         /* CPLD sdram type inputs; set up by blob */
 200         //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
 201         printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
 202                 !!(GPLR & BADGE4_GPIO_SDTYP1),
 203                 !!(GPLR & BADGE4_GPIO_SDTYP0));
 204
 205         /* SA1111 reset pin; set up by blob */
 206         //GPSR  = BADGE4_GPIO_SA1111_NRST;
 207         //GPDR |= BADGE4_GPIO_SA1111_NRST;
 208
 209
 210         /* power management cruft */
 211         PGSR = 0;
 212         PWER = 0;
 213         PCFR = 0;
 214         PSDR = 0;
 215
 216         PWER |= PWER_GPIO26;    /* wake up on an edge from TESTPT_J5 */
 217         PWER |= PWER_RTC;       /* wake up if rtc fires */
 218
 219         /* drive sa1111_nrst during sleep */
 220         PGSR |= BADGE4_GPIO_SA1111_NRST;
 221         /* drive CPLD as is during sleep */
 222         PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
 223
 224
 225         /* Now bring up the SA-1111. */
 226         ret = badge4_sa1111_init();
 227         if (ret < 0)
 228                 printk(KERN_ERR
 229                         "%s: SA-1111 initialization failed (%d)\n",
 230                         __func__, ret);
 231
 232
 233         /* maybe turn on 5v0 from the start */
 234         badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
 235
 236         sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
 237
 238         return 0;
 239 }
 240
 241 arch_initcall(badge4_init);
 242
 243
 244 static unsigned badge4_5V_bitmap = 0;
 245
 246 void badge4_set_5V(unsigned subsystem, int on)
 247 {
 248         unsigned long flags;
 249         unsigned old_5V_bitmap;
 250
 251         local_irq_save(flags);
 252
 253         old_5V_bitmap = badge4_5V_bitmap;
 254
 255         if (on) {
 256                 badge4_5V_bitmap |= subsystem;
 257         } else {
 258                 badge4_5V_bitmap &= ~subsystem;
 259         }
 260
 261         /* detect on->off and off->on transitions */
 262         if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
 263                 /* was off, now on */
 264                 printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
 265                 GPSR = BADGE4_GPIO_PCMEN5V;
 266         } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
 267                 /* was on, now off */
 268                 printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
 269                 GPCR = BADGE4_GPIO_PCMEN5V;
 270         }
 271
 272         local_irq_restore(flags);
 273 }
 274 EXPORT_SYMBOL(badge4_set_5V);
 275
 276
 277 static struct map_desc badge4_io_desc[] __initdata = {
 278         {       /* SRAM  bank 1 */
 279                 .virtual        = 0xf1000000,
 280                 .pfn            = __phys_to_pfn(0x08000000),
 281                 .length         = 0x00100000,
 282                 .type           = MT_DEVICE
 283         }, {    /* SRAM  bank 2 */
 284                 .virtual        = 0xf2000000,
 285                 .pfn            = __phys_to_pfn(0x10000000),
 286                 .length         = 0x00100000,
 287                 .type           = MT_DEVICE
 288         }, {    /* SA-1111      */
 289                 .virtual        = 0xf4000000,
 290                 .pfn            = __phys_to_pfn(0x48000000),
 291                 .length         = 0x00100000,
 292                 .type           = MT_DEVICE
 293         }
 294 };
 295
 296 static void
 297 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 298 {
 299         if (!state) {
 300                 Ser1SDCR0 |= SDCR0_UART;
 301         }
 302 }
 303
 304 static struct sa1100_port_fns badge4_port_fns __initdata = {
 305         //.get_mctrl    = badge4_get_mctrl,
 306         //.set_mctrl    = badge4_set_mctrl,
 307         .pm             = badge4_uart_pm,
 308 };
 309
 310 static void __init badge4_map_io(void)
 311 {
 312         sa1100_map_io();
 313         iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
 314
 315         sa1100_register_uart_fns(&badge4_port_fns);
 316         sa1100_register_uart(0, 3);
 317         sa1100_register_uart(1, 1);
 318 }
 319
 320 MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
 321         .atag_offset    = 0x100,
 322         .map_io         = badge4_map_io,
 323         .init_irq       = sa1100_init_irq,
 324         .timer          = &sa1100_timer,
 325 #ifdef CONFIG_SA1111
 326         .dma_zone_size  = SZ_1M,
 327 #endif
 328         .restart        = sa11x0_restart,
 329 MACHINE_END