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