p720t.c 3.6 KB

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  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/platform_device.h>
  29. #include <mach/hardware.h>
  30. #include <asm/pgtable.h>
  31. #include <asm/page.h>
  32. #include <asm/setup.h>
  33. #include <asm/sizes.h>
  34. #include <asm/mach-types.h>
  35. #include <asm/mach/arch.h>
  36. #include <asm/mach/map.h>
  37. #include <mach/syspld.h>
  38. #include "common.h"
  39. #define GPIO_USERLED CLPS711X_GPIO(3, 0)
  40. /*
  41. * Map the P720T system PLD. It occupies two address spaces:
  42. * 0x10000000 and 0x10400000. We map both regions as one.
  43. */
  44. static struct map_desc p720t_io_desc[] __initdata = {
  45. {
  46. .virtual = SYSPLD_VIRT_BASE,
  47. .pfn = __phys_to_pfn(SYSPLD_PHYS_BASE),
  48. .length = SZ_8M,
  49. .type = MT_DEVICE,
  50. },
  51. };
  52. static void __init
  53. fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
  54. {
  55. /*
  56. * Our bootloader doesn't setup any tags (yet).
  57. */
  58. if (tag->hdr.tag != ATAG_CORE) {
  59. tag->hdr.tag = ATAG_CORE;
  60. tag->hdr.size = tag_size(tag_core);
  61. tag->u.core.flags = 0;
  62. tag->u.core.pagesize = PAGE_SIZE;
  63. tag->u.core.rootdev = 0x0100;
  64. tag = tag_next(tag);
  65. tag->hdr.tag = ATAG_MEM;
  66. tag->hdr.size = tag_size(tag_mem32);
  67. tag->u.mem.size = 4096;
  68. tag->u.mem.start = PHYS_OFFSET;
  69. tag = tag_next(tag);
  70. tag->hdr.tag = ATAG_NONE;
  71. tag->hdr.size = 0;
  72. }
  73. }
  74. static void __init p720t_map_io(void)
  75. {
  76. clps711x_map_io();
  77. iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
  78. }
  79. static void __init p720t_init_early(void)
  80. {
  81. /*
  82. * Power down as much as possible in case we don't
  83. * have the drivers loaded.
  84. */
  85. PLD_LCDEN = 0;
  86. PLD_PWR &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
  87. PLD_KBD = 0;
  88. PLD_IO = 0;
  89. PLD_IRDA = 0;
  90. PLD_CODEC = 0;
  91. PLD_TCH = 0;
  92. PLD_SPI = 0;
  93. if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
  94. PLD_COM2 = 0;
  95. PLD_COM1 = 0;
  96. }
  97. }
  98. static struct gpio_led p720t_gpio_leds[] = {
  99. {
  100. .name = "User LED",
  101. .default_trigger = "heartbeat",
  102. .gpio = GPIO_USERLED,
  103. },
  104. };
  105. static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
  106. .leds = p720t_gpio_leds,
  107. .num_leds = ARRAY_SIZE(p720t_gpio_leds),
  108. };
  109. static void __init p720t_init(void)
  110. {
  111. platform_device_register_simple("video-clps711x", 0, NULL, 0);
  112. }
  113. static void __init p720t_init_late(void)
  114. {
  115. platform_device_register_data(&platform_bus, "leds-gpio", 0,
  116. &p720t_gpio_led_pdata,
  117. sizeof(p720t_gpio_led_pdata));
  118. }
  119. MACHINE_START(P720T, "ARM-Prospector720T")
  120. /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
  121. .atag_offset = 0x100,
  122. .nr_irqs = CLPS711X_NR_IRQS,
  123. .fixup = fixup_p720t,
  124. .map_io = p720t_map_io,
  125. .init_early = p720t_init_early,
  126. .init_irq = clps711x_init_irq,
  127. .timer = &clps711x_timer,
  128. .init_machine = p720t_init,
  129. .init_late = p720t_init_late,
  130. .restart = clps711x_restart,
  131. MACHINE_END