Pileus Git - ~andy/linux/blob - 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 #include "devices.h"
  47
  48 #define P720T_USERLED           CLPS711X_GPIO(3, 0)
  49 #define P720T_NAND_CLE          CLPS711X_GPIO(4, 0)
  50 #define P720T_NAND_ALE          CLPS711X_GPIO(4, 1)
  51 #define P720T_NAND_NCE          CLPS711X_GPIO(4, 2)
  52
  53 #define P720T_NAND_BASE         (CLPS711X_SDRAM1_BASE)
  54
  55 static struct resource p720t_nand_resource[] __initdata = {
  56         DEFINE_RES_MEM(P720T_NAND_BASE, SZ_4),
  57 };
  58
  59 static struct mtd_partition p720t_nand_parts[] __initdata = {
  60         {
  61                 .name   = "Flash partition 1",
  62                 .offset = 0,
  63                 .size   = SZ_2M,
  64         },
  65         {
  66                 .name   = "Flash partition 2",
  67                 .offset = MTDPART_OFS_APPEND,
  68                 .size   = MTDPART_SIZ_FULL,
  69         },
  70 };
  71
  72 static struct gpio_nand_platdata p720t_nand_pdata __initdata = {
  73         .gpio_rdy       = -1,
  74         .gpio_nce       = P720T_NAND_NCE,
  75         .gpio_ale       = P720T_NAND_ALE,
  76         .gpio_cle       = P720T_NAND_CLE,
  77         .gpio_nwp       = -1,
  78         .chip_delay     = 15,
  79         .parts          = p720t_nand_parts,
  80         .num_parts      = ARRAY_SIZE(p720t_nand_parts),
  81 };
  82
  83 static struct platform_device p720t_nand_pdev __initdata = {
  84         .name           = "gpio-nand",
  85         .id             = -1,
  86         .resource       = p720t_nand_resource,
  87         .num_resources  = ARRAY_SIZE(p720t_nand_resource),
  88         .dev            = {
  89                 .platform_data = &p720t_nand_pdata,
  90         },
  91 };
  92
  93 static void p720t_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
  94 {
  95         if (power) {
  96                 PLD_LCDEN = PLD_LCDEN_EN;
  97                 PLD_PWR |= PLD_S4_ON | PLD_S2_ON | PLD_S1_ON;
  98         } else {
  99                 PLD_PWR &= ~(PLD_S4_ON | PLD_S2_ON | PLD_S1_ON);
 100                 PLD_LCDEN = 0;
 101         }
 102 }
 103
 104 static struct plat_lcd_data p720t_lcd_power_pdata = {
 105         .set_power      = p720t_lcd_power_set,
 106 };
 107
 108 static void p720t_lcd_backlight_set_intensity(int intensity)
 109 {
 110         if (intensity)
 111                 PLD_PWR |= PLD_S3_ON;
 112         else
 113                 PLD_PWR = 0;
 114 }
 115
 116 static struct generic_bl_info p720t_lcd_backlight_pdata = {
 117         .name                   = "lcd-backlight.0",
 118         .default_intensity      = 0x01,
 119         .max_intensity          = 0x01,
 120         .set_bl_intensity       = p720t_lcd_backlight_set_intensity,
 121 };
 122
 123 /*
 124  * Map the P720T system PLD. It occupies two address spaces:
 125  * 0x10000000 and 0x10400000. We map both regions as one.
 126  */
 127 static struct map_desc p720t_io_desc[] __initdata = {
 128         {
 129                 .virtual        = SYSPLD_VIRT_BASE,
 130                 .pfn            = __phys_to_pfn(SYSPLD_PHYS_BASE),
 131                 .length         = SZ_8M,
 132                 .type           = MT_DEVICE,
 133         },
 134 };
 135
 136 static void __init
 137 fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
 138 {
 139         /*
 140          * Our bootloader doesn't setup any tags (yet).
 141          */
 142         if (tag->hdr.tag != ATAG_CORE) {
 143                 tag->hdr.tag = ATAG_CORE;
 144                 tag->hdr.size = tag_size(tag_core);
 145                 tag->u.core.flags = 0;
 146                 tag->u.core.pagesize = PAGE_SIZE;
 147                 tag->u.core.rootdev = 0x0100;
 148
 149                 tag = tag_next(tag);
 150                 tag->hdr.tag = ATAG_MEM;
 151                 tag->hdr.size = tag_size(tag_mem32);
 152                 tag->u.mem.size = 4096;
 153                 tag->u.mem.start = PHYS_OFFSET;
 154
 155                 tag = tag_next(tag);
 156                 tag->hdr.tag = ATAG_NONE;
 157                 tag->hdr.size = 0;
 158         }
 159 }
 160
 161 static void __init p720t_map_io(void)
 162 {
 163         clps711x_map_io();
 164         iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
 165 }
 166
 167 static void __init p720t_init_early(void)
 168 {
 169         /*
 170          * Power down as much as possible in case we don't
 171          * have the drivers loaded.
 172          */
 173         PLD_LCDEN = 0;
 174         PLD_PWR  &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
 175
 176         PLD_KBD   = 0;
 177         PLD_IO    = 0;
 178         PLD_IRDA  = 0;
 179         PLD_CODEC = 0;
 180         PLD_TCH   = 0;
 181         PLD_SPI   = 0;
 182         if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
 183                 PLD_COM2 = 0;
 184                 PLD_COM1 = 0;
 185         }
 186 }
 187
 188 static struct gpio_led p720t_gpio_leds[] = {
 189         {
 190                 .name                   = "User LED",
 191                 .default_trigger        = "heartbeat",
 192                 .gpio                   = P720T_USERLED,
 193         },
 194 };
 195
 196 static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
 197         .leds           = p720t_gpio_leds,
 198         .num_leds       = ARRAY_SIZE(p720t_gpio_leds),
 199 };
 200
 201 static void __init p720t_init(void)
 202 {
 203         clps711x_devices_init();
 204 }
 205
 206 static void __init p720t_init_late(void)
 207 {
 208         platform_device_register(&p720t_nand_pdev);
 209         platform_device_register_data(&platform_bus, "platform-lcd", 0,
 210                                       &p720t_lcd_power_pdata,
 211                                       sizeof(p720t_lcd_power_pdata));
 212         platform_device_register_data(&platform_bus, "generic-bl", 0,
 213                                       &p720t_lcd_backlight_pdata,
 214                                       sizeof(p720t_lcd_backlight_pdata));
 215         platform_device_register_simple("video-clps711x", 0, NULL, 0);
 216         platform_device_register_data(&platform_bus, "leds-gpio", 0,
 217                                       &p720t_gpio_led_pdata,
 218                                       sizeof(p720t_gpio_led_pdata));
 219 }
 220
 221 MACHINE_START(P720T, "ARM-Prospector720T")
 222         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 223         .atag_offset    = 0x100,
 224         .nr_irqs        = CLPS711X_NR_IRQS,
 225         .fixup          = fixup_p720t,
 226         .map_io         = p720t_map_io,
 227         .init_early     = p720t_init_early,
 228         .init_irq       = clps711x_init_irq,
 229         .init_time      = clps711x_timer_init,
 230         .init_machine   = p720t_init,
 231         .init_late      = p720t_init_late,
 232         .handle_irq     = clps711x_handle_irq,
 233         .restart        = clps711x_restart,
 234 MACHINE_END