arch/arm/mach-clps711x/board-p720t.c

   1 /*
   2  *  linux/arch/arm/mach-clps711x/p720t.c
   3  *
   4  *  Copyright (C) 2000-2001 Deep Blue Solutions Ltd
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/types.h>
  23 #include <linux/string.h>
  24 #include <linux/mm.h>
  25 #include <linux/io.h>
  26 #include <linux/slab.h>
  27 #include <linux/leds.h>
  28 #include <linux/sizes.h>
  29 #include <linux/backlight.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/mtd/partitions.h>
  32 #include <linux/mtd/nand-gpio.h>
  33
  34 #include <mach/hardware.h>
  35 #include <asm/pgtable.h>
  36 #include <asm/page.h>
  37 #include <asm/setup.h>
  38 #include <asm/mach-types.h>
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <mach/syspld.h>
  42
  43 #include <video/platform_lcd.h>
  44
  45 #include "common.h"
  46
  47 #define P720T_USERLED           CLPS711X_GPIO(3, 0)
  48 #define P720T_NAND_CLE          CLPS711X_GPIO(4, 0)
  49 #define P720T_NAND_ALE          CLPS711X_GPIO(4, 1)
  50 #define P720T_NAND_NCE          CLPS711X_GPIO(4, 2)
  51
  52 #define P720T_NAND_BASE         (CLPS711X_SDRAM1_BASE)
  53
  54 static struct resource p720t_nand_resource[] __initdata = {
  55         DEFINE_RES_MEM(P720T_NAND_BASE, SZ_4),
  56 };
  57
  58 static struct mtd_partition p720t_nand_parts[] __initdata = {
  59         {
  60                 .name   = "Flash partition 1",
  61                 .offset = 0,
  62                 .size   = SZ_2M,
  63         },
  64         {
  65                 .name   = "Flash partition 2",
  66                 .offset = MTDPART_OFS_APPEND,
  67                 .size   = MTDPART_SIZ_FULL,
  68         },
  69 };
  70
  71 static struct gpio_nand_platdata p720t_nand_pdata __initdata = {
  72         .gpio_rdy       = -1,
  73         .gpio_nce       = P720T_NAND_NCE,
  74         .gpio_ale       = P720T_NAND_ALE,
  75         .gpio_cle       = P720T_NAND_CLE,
  76         .gpio_nwp       = -1,
  77         .chip_delay     = 15,
  78         .parts          = p720t_nand_parts,
  79         .num_parts      = ARRAY_SIZE(p720t_nand_parts),
  80 };
  81
  82 static struct platform_device p720t_nand_pdev __initdata = {
  83         .name           = "gpio-nand",
  84         .id             = -1,
  85         .resource       = p720t_nand_resource,
  86         .num_resources  = ARRAY_SIZE(p720t_nand_resource),
  87         .dev            = {
  88                 .platform_data = &p720t_nand_pdata,
  89         },
  90 };
  91
  92 static void p720t_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
  93 {
  94         if (power) {
  95                 PLD_LCDEN = PLD_LCDEN_EN;
  96                 PLD_PWR |= PLD_S4_ON | PLD_S2_ON | PLD_S1_ON;
  97         } else {
  98                 PLD_PWR &= ~(PLD_S4_ON | PLD_S2_ON | PLD_S1_ON);
  99                 PLD_LCDEN = 0;
 100         }
 101 }
 102
 103 static struct plat_lcd_data p720t_lcd_power_pdata = {
 104         .set_power      = p720t_lcd_power_set,
 105 };
 106
 107 static void p720t_lcd_backlight_set_intensity(int intensity)
 108 {
 109         if (intensity)
 110                 PLD_PWR |= PLD_S3_ON;
 111         else
 112                 PLD_PWR = 0;
 113 }
 114
 115 static struct generic_bl_info p720t_lcd_backlight_pdata = {
 116         .name                   = "lcd-backlight.0",
 117         .default_intensity      = 0x01,
 118         .max_intensity          = 0x01,
 119         .set_bl_intensity       = p720t_lcd_backlight_set_intensity,
 120 };
 121
 122 /*
 123  * Map the P720T system PLD. It occupies two address spaces:
 124  * 0x10000000 and 0x10400000. We map both regions as one.
 125  */
 126 static struct map_desc p720t_io_desc[] __initdata = {
 127         {
 128                 .virtual        = SYSPLD_VIRT_BASE,
 129                 .pfn            = __phys_to_pfn(SYSPLD_PHYS_BASE),
 130                 .length         = SZ_8M,
 131                 .type           = MT_DEVICE,
 132         },
 133 };
 134
 135 static void __init
 136 fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
 137 {
 138         /*
 139          * Our bootloader doesn't setup any tags (yet).
 140          */
 141         if (tag->hdr.tag != ATAG_CORE) {
 142                 tag->hdr.tag = ATAG_CORE;
 143                 tag->hdr.size = tag_size(tag_core);
 144                 tag->u.core.flags = 0;
 145                 tag->u.core.pagesize = PAGE_SIZE;
 146                 tag->u.core.rootdev = 0x0100;
 147
 148                 tag = tag_next(tag);
 149                 tag->hdr.tag = ATAG_MEM;
 150                 tag->hdr.size = tag_size(tag_mem32);
 151                 tag->u.mem.size = 4096;
 152                 tag->u.mem.start = PHYS_OFFSET;
 153
 154                 tag = tag_next(tag);
 155                 tag->hdr.tag = ATAG_NONE;
 156                 tag->hdr.size = 0;
 157         }
 158 }
 159
 160 static void __init p720t_map_io(void)
 161 {
 162         clps711x_map_io();
 163         iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
 164 }
 165
 166 static void __init p720t_init_early(void)
 167 {
 168         /*
 169          * Power down as much as possible in case we don't
 170          * have the drivers loaded.
 171          */
 172         PLD_LCDEN = 0;
 173         PLD_PWR  &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
 174
 175         PLD_KBD   = 0;
 176         PLD_IO    = 0;
 177         PLD_IRDA  = 0;
 178         PLD_CODEC = 0;
 179         PLD_TCH   = 0;
 180         PLD_SPI   = 0;
 181         if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
 182                 PLD_COM2 = 0;
 183                 PLD_COM1 = 0;
 184         }
 185 }
 186
 187 static struct gpio_led p720t_gpio_leds[] = {
 188         {
 189                 .name                   = "User LED",
 190                 .default_trigger        = "heartbeat",
 191                 .gpio                   = P720T_USERLED,
 192         },
 193 };
 194
 195 static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
 196         .leds           = p720t_gpio_leds,
 197         .num_leds       = ARRAY_SIZE(p720t_gpio_leds),
 198 };
 199
 200 static void __init p720t_init(void)
 201 {
 202         platform_device_register(&p720t_nand_pdev);
 203         platform_device_register_data(&platform_bus, "platform-lcd", 0,
 204                                       &p720t_lcd_power_pdata,
 205                                       sizeof(p720t_lcd_power_pdata));
 206         platform_device_register_data(&platform_bus, "generic-bl", 0,
 207                                       &p720t_lcd_backlight_pdata,
 208                                       sizeof(p720t_lcd_backlight_pdata));
 209         platform_device_register_simple("video-clps711x", 0, NULL, 0);
 210 }
 211
 212 static void __init p720t_init_late(void)
 213 {
 214         platform_device_register_data(&platform_bus, "leds-gpio", 0,
 215                                       &p720t_gpio_led_pdata,
 216                                       sizeof(p720t_gpio_led_pdata));
 217 }
 218
 219 MACHINE_START(P720T, "ARM-Prospector720T")
 220         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 221         .atag_offset    = 0x100,
 222         .nr_irqs        = CLPS711X_NR_IRQS,
 223         .fixup          = fixup_p720t,
 224         .map_io         = p720t_map_io,
 225         .init_early     = p720t_init_early,
 226         .init_irq       = clps711x_init_irq,
 227         .init_time      = clps711x_timer_init,
 228         .init_machine   = p720t_init,
 229         .init_late      = p720t_init_late,
 230         .handle_irq     = clps711x_handle_irq,
 231         .restart        = clps711x_restart,
 232 MACHINE_END