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 28 #include <linux/module.h> 29 30 #include <drm/drm_print.h> 31 32 #include "drm_crtc_helper_internal.h" 33 34 MODULE_AUTHOR("David Airlie, Jesse Barnes"); 35 MODULE_DESCRIPTION("DRM KMS helper"); 36 MODULE_LICENSE("GPL and additional rights"); 37 38 #if IS_ENABLED(CONFIG_DRM_LOAD_EDID_FIRMWARE) 39 40 /* Backward compatibility for drm_kms_helper.edid_firmware */ 41 static int edid_firmware_set(const char *val, const struct kernel_param *kp) 42 { 43 DRM_NOTE("drm_kms_helper.edid_firmware is deprecated, please use drm.edid_firmware instead.\n"); 44 45 return __drm_set_edid_firmware_path(val); 46 } 47 48 static int edid_firmware_get(char *buffer, const struct kernel_param *kp) 49 { 50 return __drm_get_edid_firmware_path(buffer, PAGE_SIZE); 51 } 52 53 static const struct kernel_param_ops edid_firmware_ops = { 54 .set = edid_firmware_set, 55 .get = edid_firmware_get, 56 }; 57 58 module_param_cb(edid_firmware, &edid_firmware_ops, NULL, 0644); 59 __MODULE_PARM_TYPE(edid_firmware, "charp"); 60 MODULE_PARM_DESC(edid_firmware, 61 "DEPRECATED. Use drm.edid_firmware module parameter instead."); 62 63 #endif 64 65 static int __init drm_kms_helper_init(void) 66 { 67 int ret; 68 69 /* Call init functions from specific kms helpers here */ 70 ret = drm_fb_helper_modinit(); 71 if (ret < 0) 72 goto out; 73 74 ret = drm_dp_aux_dev_init(); 75 if (ret < 0) 76 goto out; 77 78 out: 79 return ret; 80 } 81 82 static void __exit drm_kms_helper_exit(void) 83 { 84 /* Call exit functions from specific kms helpers here */ 85 drm_dp_aux_dev_exit(); 86 } 87 88 module_init(drm_kms_helper_init); 89 module_exit(drm_kms_helper_exit); 90