drm_kms_helper_common.c 2.6 KB

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  1. /*
  2. * Copyright © 2015 Intel Corporation
  3. *
  4. * Permission is hereby granted, free of charge, to any person obtaining a
  5. * copy of this software and associated documentation files (the "Software"),
  6. * to deal in the Software without restriction, including without limitation
  7. * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8. * and/or sell copies of the Software, and to permit persons to whom the
  9. * Software is furnished to do so, subject to the following conditions:
  10. *
  11. * The above copyright notice and this permission notice (including the next
  12. * paragraph) shall be included in all copies or substantial portions of the
  13. * Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  18. * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21. * IN THE SOFTWARE.
  22. *
  23. * Authors:
  24. * Rafael Antognolli <rafael.antognolli@intel.com>
  25. *
  26. */
  27. #include <linux/module.h>
  28. #include <drm/drm_print.h>
  29. #include "drm_crtc_helper_internal.h"
  30. MODULE_AUTHOR("David Airlie, Jesse Barnes");
  31. MODULE_DESCRIPTION("DRM KMS helper");
  32. MODULE_LICENSE("GPL and additional rights");
  33. #if IS_ENABLED(CONFIG_DRM_LOAD_EDID_FIRMWARE)
  34. /* Backward compatibility for drm_kms_helper.edid_firmware */
  35. static int edid_firmware_set(const char *val, const struct kernel_param *kp)
  36. {
  37. DRM_NOTE("drm_kms_helper.edid_firmware is deprecated, please use drm.edid_firmware instead.\n");
  38. return __drm_set_edid_firmware_path(val);
  39. }
  40. static int edid_firmware_get(char *buffer, const struct kernel_param *kp)
  41. {
  42. return __drm_get_edid_firmware_path(buffer, PAGE_SIZE);
  43. }
  44. static const struct kernel_param_ops edid_firmware_ops = {
  45. .set = edid_firmware_set,
  46. .get = edid_firmware_get,
  47. };
  48. module_param_cb(edid_firmware, &edid_firmware_ops, NULL, 0644);
  49. __MODULE_PARM_TYPE(edid_firmware, "charp");
  50. MODULE_PARM_DESC(edid_firmware,
  51. "DEPRECATED. Use drm.edid_firmware module parameter instead.");
  52. #endif
  53. static int __init drm_kms_helper_init(void)
  54. {
  55. int ret;
  56. /* Call init functions from specific kms helpers here */
  57. ret = drm_fb_helper_modinit();
  58. if (ret < 0)
  59. goto out;
  60. ret = drm_dp_aux_dev_init();
  61. if (ret < 0)
  62. goto out;
  63. out:
  64. return ret;
  65. }
  66. static void __exit drm_kms_helper_exit(void)
  67. {
  68. /* Call exit functions from specific kms helpers here */
  69. drm_dp_aux_dev_exit();
  70. }
  71. module_init(drm_kms_helper_init);
  72. module_exit(drm_kms_helper_exit);