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