1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * This program is free software; you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation; either version 2 of the License, or 6 * (at your option) any later version. 7 */ 8 9 #include "vkms_drv.h" 10 #include <drm/drm_crtc_helper.h> 11 #include <drm/drm_atomic_helper.h> 12 13 static void vkms_connector_destroy(struct drm_connector *connector) 14 { 15 drm_connector_unregister(connector); 16 drm_connector_cleanup(connector); 17 } 18 19 static const struct drm_connector_funcs vkms_connector_funcs = { 20 .fill_modes = drm_helper_probe_single_connector_modes, 21 .destroy = vkms_connector_destroy, 22 .reset = drm_atomic_helper_connector_reset, 23 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 24 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 25 }; 26 27 static const struct drm_encoder_funcs vkms_encoder_funcs = { 28 .destroy = drm_encoder_cleanup, 29 }; 30 31 static int vkms_conn_get_modes(struct drm_connector *connector) 32 { 33 int count; 34 35 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX); 36 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); 37 38 return count; 39 } 40 41 static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { 42 .get_modes = vkms_conn_get_modes, 43 }; 44 45 int vkms_output_init(struct vkms_device *vkmsdev) 46 { 47 struct vkms_output *output = &vkmsdev->output; 48 struct drm_device *dev = &vkmsdev->drm; 49 struct drm_connector *connector = &output->connector; 50 struct drm_encoder *encoder = &output->encoder; 51 struct drm_crtc *crtc = &output->crtc; 52 struct drm_plane *primary; 53 int ret; 54 55 primary = vkms_plane_init(vkmsdev); 56 if (IS_ERR(primary)) 57 return PTR_ERR(primary); 58 59 ret = vkms_crtc_init(dev, crtc, primary, NULL); 60 if (ret) 61 goto err_crtc; 62 63 ret = drm_connector_init(dev, connector, &vkms_connector_funcs, 64 DRM_MODE_CONNECTOR_VIRTUAL); 65 if (ret) { 66 DRM_ERROR("Failed to init connector\n"); 67 goto err_connector; 68 } 69 70 drm_connector_helper_add(connector, &vkms_conn_helper_funcs); 71 72 ret = drm_connector_register(connector); 73 if (ret) { 74 DRM_ERROR("Failed to register connector\n"); 75 goto err_connector_register; 76 } 77 78 ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs, 79 DRM_MODE_ENCODER_VIRTUAL, NULL); 80 if (ret) { 81 DRM_ERROR("Failed to init encoder\n"); 82 goto err_encoder; 83 } 84 encoder->possible_crtcs = 1; 85 86 ret = drm_connector_attach_encoder(connector, encoder); 87 if (ret) { 88 DRM_ERROR("Failed to attach connector to encoder\n"); 89 goto err_attach; 90 } 91 92 drm_mode_config_reset(dev); 93 94 return 0; 95 96 err_attach: 97 drm_encoder_cleanup(encoder); 98 99 err_encoder: 100 drm_connector_unregister(connector); 101 102 err_connector_register: 103 drm_connector_cleanup(connector); 104 105 err_connector: 106 drm_crtc_cleanup(crtc); 107 108 err_crtc: 109 drm_plane_cleanup(primary); 110 return ret; 111 } 112