1 // SPDX-License-Identifier: GPL-2.0+ 2 3 #include <drm/drm_atomic_helper.h> 4 #include <drm/drm_edid.h> 5 #include <drm/drm_managed.h> 6 #include <drm/drm_probe_helper.h> 7 8 #include "vkms_connector.h" 9 10 static const struct drm_connector_funcs vkms_connector_funcs = { 11 .fill_modes = drm_helper_probe_single_connector_modes, 12 .reset = drm_atomic_helper_connector_reset, 13 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 14 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 15 }; 16 17 static int vkms_conn_get_modes(struct drm_connector *connector) 18 { 19 int count; 20 21 /* Use the default modes list from DRM */ 22 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX); 23 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); 24 25 return count; 26 } 27 28 static struct drm_encoder *vkms_conn_best_encoder(struct drm_connector *connector) 29 { 30 struct drm_encoder *encoder; 31 32 drm_connector_for_each_possible_encoder(connector, encoder) 33 return encoder; 34 35 return NULL; 36 } 37 38 static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { 39 .get_modes = vkms_conn_get_modes, 40 .best_encoder = vkms_conn_best_encoder, 41 }; 42 43 struct vkms_connector *vkms_connector_init(struct vkms_device *vkmsdev) 44 { 45 struct drm_device *dev = &vkmsdev->drm; 46 struct vkms_connector *connector; 47 int ret; 48 49 connector = drmm_kzalloc(dev, sizeof(*connector), GFP_KERNEL); 50 if (!connector) 51 return ERR_PTR(-ENOMEM); 52 53 ret = drmm_connector_init(dev, &connector->base, &vkms_connector_funcs, 54 DRM_MODE_CONNECTOR_VIRTUAL, NULL); 55 if (ret) 56 return ERR_PTR(ret); 57 58 drm_connector_helper_add(&connector->base, &vkms_conn_helper_funcs); 59 60 return connector; 61 } 62