1 // SPDX-License-Identifier: GPL-2.0+ 2 3 #include "vkms_drv.h" 4 #include <drm/drm_atomic_helper.h> 5 #include <drm/drm_probe_helper.h> 6 7 static void vkms_connector_destroy(struct drm_connector *connector) 8 { 9 drm_connector_unregister(connector); 10 drm_connector_cleanup(connector); 11 } 12 13 static const struct drm_connector_funcs vkms_connector_funcs = { 14 .fill_modes = drm_helper_probe_single_connector_modes, 15 .destroy = vkms_connector_destroy, 16 .reset = drm_atomic_helper_connector_reset, 17 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 18 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 19 }; 20 21 static const struct drm_encoder_funcs vkms_encoder_funcs = { 22 .destroy = drm_encoder_cleanup, 23 }; 24 25 static int vkms_conn_get_modes(struct drm_connector *connector) 26 { 27 int count; 28 29 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX); 30 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); 31 32 return count; 33 } 34 35 static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { 36 .get_modes = vkms_conn_get_modes, 37 }; 38 39 int vkms_output_init(struct vkms_device *vkmsdev) 40 { 41 struct vkms_output *output = &vkmsdev->output; 42 struct drm_device *dev = &vkmsdev->drm; 43 struct drm_connector *connector = &output->connector; 44 struct drm_encoder *encoder = &output->encoder; 45 struct drm_crtc *crtc = &output->crtc; 46 struct drm_plane *primary, *cursor = NULL; 47 int ret; 48 49 primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY); 50 if (IS_ERR(primary)) 51 return PTR_ERR(primary); 52 53 if (enable_cursor) { 54 cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR); 55 if (IS_ERR(cursor)) { 56 ret = PTR_ERR(cursor); 57 goto err_cursor; 58 } 59 } 60 61 ret = vkms_crtc_init(dev, crtc, primary, cursor); 62 if (ret) 63 goto err_crtc; 64 65 ret = drm_connector_init(dev, connector, &vkms_connector_funcs, 66 DRM_MODE_CONNECTOR_VIRTUAL); 67 if (ret) { 68 DRM_ERROR("Failed to init connector\n"); 69 goto err_connector; 70 } 71 72 drm_connector_helper_add(connector, &vkms_conn_helper_funcs); 73 74 ret = drm_connector_register(connector); 75 if (ret) { 76 DRM_ERROR("Failed to register connector\n"); 77 goto err_connector_register; 78 } 79 80 ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs, 81 DRM_MODE_ENCODER_VIRTUAL, NULL); 82 if (ret) { 83 DRM_ERROR("Failed to init encoder\n"); 84 goto err_encoder; 85 } 86 encoder->possible_crtcs = 1; 87 88 ret = drm_connector_attach_encoder(connector, encoder); 89 if (ret) { 90 DRM_ERROR("Failed to attach connector to encoder\n"); 91 goto err_attach; 92 } 93 94 drm_mode_config_reset(dev); 95 96 return 0; 97 98 err_attach: 99 drm_encoder_cleanup(encoder); 100 101 err_encoder: 102 drm_connector_unregister(connector); 103 104 err_connector_register: 105 drm_connector_cleanup(connector); 106 107 err_connector: 108 drm_crtc_cleanup(crtc); 109 110 err_crtc: 111 if (enable_cursor) 112 drm_plane_cleanup(cursor); 113 114 err_cursor: 115 drm_plane_cleanup(primary); 116 117 return ret; 118 } 119