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
  7static void vkms_connector_destroy(struct drm_connector *connector)
  8{
  9	drm_connector_cleanup(connector);
 10}
 11
 12static 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
 20static const struct drm_encoder_funcs vkms_encoder_funcs = {
 21	.destroy = drm_encoder_cleanup,
 22};
 23
 24static 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
 34static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
 35	.get_modes    = vkms_conn_get_modes,
 36};
 37
 38int 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
 91err_attach:
 92	drm_encoder_cleanup(encoder);
 93
 94err_encoder:
 95	drm_connector_cleanup(connector);
 96
 97err_connector:
 98	drm_crtc_cleanup(crtc);
 99
100err_crtc:
101	if (enable_cursor)
102		drm_plane_cleanup(cursor);
103
104err_cursor:
105	drm_plane_cleanup(primary);
106
107	return ret;
108}