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 int writeback; 45 46 primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); 47 if (IS_ERR(primary)) 48 return PTR_ERR(primary); 49 50 if (vkmsdev->config->cursor) { 51 cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); 52 if (IS_ERR(cursor)) { 53 ret = PTR_ERR(cursor); 54 goto err_cursor; 55 } 56 } 57 58 ret = vkms_crtc_init(dev, crtc, primary, cursor); 59 if (ret) 60 goto err_crtc; 61 62 ret = drm_connector_init(dev, connector, &vkms_connector_funcs, 63 DRM_MODE_CONNECTOR_VIRTUAL); 64 if (ret) { 65 DRM_ERROR("Failed to init connector\n"); 66 goto err_connector; 67 } 68 69 drm_connector_helper_add(connector, &vkms_conn_helper_funcs); 70 71 ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL); 72 if (ret) { 73 DRM_ERROR("Failed to init encoder\n"); 74 goto err_encoder; 75 } 76 encoder->possible_crtcs = 1; 77 78 ret = drm_connector_attach_encoder(connector, encoder); 79 if (ret) { 80 DRM_ERROR("Failed to attach connector to encoder\n"); 81 goto err_attach; 82 } 83 84 if (vkmsdev->config->writeback) { 85 writeback = vkms_enable_writeback_connector(vkmsdev); 86 if (writeback) 87 DRM_ERROR("Failed to init writeback connector\n"); 88 } 89 90 drm_mode_config_reset(dev); 91 92 return 0; 93 94 err_attach: 95 drm_encoder_cleanup(encoder); 96 97 err_encoder: 98 drm_connector_cleanup(connector); 99 100 err_connector: 101 drm_crtc_cleanup(crtc); 102 103 err_crtc: 104 if (vkmsdev->config->cursor) 105 drm_plane_cleanup(cursor); 106 107 err_cursor: 108 drm_plane_cleanup(primary); 109 110 return ret; 111 } 112