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