fb.c 2.9 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * Framebuffer device registration for TI OMAP platforms
  4. *
  5. * Copyright (C) 2006 Nokia Corporation
  6. * Author: Imre Deak <[email protected]>
  7. */
  8. #include <linux/module.h>
  9. #include <linux/kernel.h>
  10. #include <linux/mm.h>
  11. #include <linux/init.h>
  12. #include <linux/platform_device.h>
  13. #include <linux/memblock.h>
  14. #include <linux/io.h>
  15. #include <linux/omapfb.h>
  16. #include <linux/dma-mapping.h>
  17. #include <asm/mach/map.h>
  18. #include "soc.h"
  19. #include "display.h"
  20. #ifdef CONFIG_OMAP2_VRFB
  21. /*
  22. * The first memory resource is the register region for VRFB,
  23. * the rest are VRFB virtual memory areas for each VRFB context.
  24. */
  25. static const struct resource omap2_vrfb_resources[] = {
  26. DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
  27. DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  28. DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  29. DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  30. DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  31. };
  32. static const struct resource omap3_vrfb_resources[] = {
  33. DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
  34. DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  35. DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  36. DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  37. DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  38. DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
  39. DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
  40. DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
  41. DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
  42. DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
  43. DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
  44. DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
  45. DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
  46. };
  47. int __init omap_init_vrfb(void)
  48. {
  49. struct platform_device *pdev;
  50. const struct resource *res;
  51. unsigned int num_res;
  52. if (cpu_is_omap24xx()) {
  53. res = omap2_vrfb_resources;
  54. num_res = ARRAY_SIZE(omap2_vrfb_resources);
  55. } else if (cpu_is_omap34xx()) {
  56. res = omap3_vrfb_resources;
  57. num_res = ARRAY_SIZE(omap3_vrfb_resources);
  58. } else {
  59. return 0;
  60. }
  61. pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
  62. res, num_res, NULL, 0);
  63. return PTR_ERR_OR_ZERO(pdev);
  64. }
  65. #else
  66. int __init omap_init_vrfb(void) { return 0; }
  67. #endif
  68. #if IS_ENABLED(CONFIG_FB_OMAP2)
  69. static u64 omap_fb_dma_mask = ~(u32)0;
  70. static struct omapfb_platform_data omapfb_config;
  71. static struct platform_device omap_fb_device = {
  72. .name = "omapfb",
  73. .id = -1,
  74. .dev = {
  75. .dma_mask = &omap_fb_dma_mask,
  76. .coherent_dma_mask = DMA_BIT_MASK(32),
  77. .platform_data = &omapfb_config,
  78. },
  79. .num_resources = 0,
  80. };
  81. int __init omap_init_fb(void)
  82. {
  83. return platform_device_register(&omap_fb_device);
  84. }
  85. #else
  86. int __init omap_init_fb(void) { return 0; }
  87. #endif