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 #include <drm/drm_simple_kms_helper.h> 7 8 static void vkms_connector_destroy(struct drm_connector *connector) 9 { 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 int vkms_conn_get_modes(struct drm_connector *connector) 22 { 23 int count; 24 25 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX); 26 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); 27 28 return count; 29 } 30 31 static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { 32 .get_modes = vkms_conn_get_modes, 33 }; 34 35 int vkms_output_init(struct vkms_device *vkmsdev, int index) 36 { 37 struct vkms_output *output = &vkmsdev->output; 38 struct drm_device *dev = &vkmsdev->drm; 39 struct drm_connector *connector = &output->connector; 40 struct drm_encoder *encoder = &output->encoder; 41 struct drm_crtc *crtc = &output->crtc; 42 struct drm_plane *primary, *cursor = NULL; 43 int ret; 44 45 primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); 46 if (IS_ERR(primary)) 47 return PTR_ERR(primary); 48 49 if (enable_cursor) { 50 cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); 51 if (IS_ERR(cursor)) { 52 ret = PTR_ERR(cursor); 53 goto err_cursor; 54 } 55 } 56 57 ret = vkms_crtc_init(dev, crtc, primary, cursor); 58 if (ret) 59 goto err_crtc; 60 61 ret = drm_connector_init(dev, connector, &vkms_connector_funcs, 62 DRM_MODE_CONNECTOR_VIRTUAL); 63 if (ret) { 64 DRM_ERROR("Failed to init connector\n"); 65 goto err_connector; 66 } 67 68 drm_connector_helper_add(connector, &vkms_conn_helper_funcs); 69 70 ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL); 71 if (ret) { 72 DRM_ERROR("Failed to init encoder\n"); 73 goto err_encoder; 74 } 75 encoder->possible_crtcs = 1; 76 77 ret = drm_connector_attach_encoder(connector, encoder); 78 if (ret) { 79 DRM_ERROR("Failed to attach connector to encoder\n"); 80 goto err_attach; 81 } 82 83 drm_mode_config_reset(dev); 84 85 return 0; 86 87 err_attach: 88 drm_encoder_cleanup(encoder); 89 90 err_encoder: 91 drm_connector_cleanup(connector); 92 93 err_connector: 94 drm_crtc_cleanup(crtc); 95 96 err_crtc: 97 if (enable_cursor) 98 drm_plane_cleanup(cursor); 99 100 err_cursor: 101 drm_plane_cleanup(primary); 102 103 return ret; 104 } 105