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
  8static void vkms_connector_destroy(struct drm_connector *connector)
  9{
 10	drm_connector_cleanup(connector);
 11}
 12
 13static 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
 21static 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
 31static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
 32	.get_modes    = vkms_conn_get_modes,
 33};
 34
 35int 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
 87err_attach:
 88	drm_encoder_cleanup(encoder);
 89
 90err_encoder:
 91	drm_connector_cleanup(connector);
 92
 93err_connector:
 94	drm_crtc_cleanup(crtc);
 95
 96err_crtc:
 97	if (enable_cursor)
 98		drm_plane_cleanup(cursor);
 99
100err_cursor:
101	drm_plane_cleanup(primary);
102
103	return ret;
104}