122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
|
|
#include "vkms_drv.h"
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_edid.h>
|
|
#include <drm/drm_managed.h>
|
|
#include <drm/drm_probe_helper.h>
|
|
|
|
static const struct drm_connector_funcs vkms_connector_funcs = {
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
static int vkms_conn_get_modes(struct drm_connector *connector)
|
|
{
|
|
int count;
|
|
|
|
/* Use the default modes list from DRM */
|
|
count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
|
|
drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
|
|
.get_modes = vkms_conn_get_modes,
|
|
};
|
|
|
|
int vkms_output_init(struct vkms_device *vkmsdev)
|
|
{
|
|
struct drm_device *dev = &vkmsdev->drm;
|
|
struct drm_connector *connector;
|
|
struct drm_encoder *encoder;
|
|
struct vkms_output *output;
|
|
struct vkms_plane *primary, *overlay, *cursor = NULL;
|
|
int ret;
|
|
int writeback;
|
|
unsigned int n;
|
|
|
|
/*
|
|
* Initialize used plane. One primary plane is required to perform the composition.
|
|
*
|
|
* The overlay and cursor planes are not mandatory, but can be used to perform complex
|
|
* composition.
|
|
*/
|
|
primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY);
|
|
if (IS_ERR(primary))
|
|
return PTR_ERR(primary);
|
|
|
|
if (vkmsdev->config->cursor) {
|
|
cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR);
|
|
if (IS_ERR(cursor))
|
|
return PTR_ERR(cursor);
|
|
}
|
|
|
|
output = vkms_crtc_init(dev, &primary->base,
|
|
cursor ? &cursor->base : NULL);
|
|
if (IS_ERR(output)) {
|
|
DRM_ERROR("Failed to allocate CRTC\n");
|
|
return PTR_ERR(output);
|
|
}
|
|
|
|
if (vkmsdev->config->overlay) {
|
|
for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
|
|
overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY);
|
|
if (IS_ERR(overlay)) {
|
|
DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n");
|
|
return PTR_ERR(overlay);
|
|
}
|
|
overlay->base.possible_crtcs = drm_crtc_mask(&output->crtc);
|
|
}
|
|
}
|
|
|
|
connector = drmm_kzalloc(dev, sizeof(*connector), GFP_KERNEL);
|
|
if (!connector) {
|
|
DRM_ERROR("Failed to allocate connector\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = drmm_connector_init(dev, connector, &vkms_connector_funcs,
|
|
DRM_MODE_CONNECTOR_VIRTUAL, NULL);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to init connector\n");
|
|
return ret;
|
|
}
|
|
|
|
drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
|
|
|
|
encoder = drmm_kzalloc(dev, sizeof(*encoder), GFP_KERNEL);
|
|
if (!encoder) {
|
|
DRM_ERROR("Failed to allocate encoder\n");
|
|
return -ENOMEM;
|
|
}
|
|
ret = drmm_encoder_init(dev, encoder, NULL,
|
|
DRM_MODE_ENCODER_VIRTUAL, NULL);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to init encoder\n");
|
|
return ret;
|
|
}
|
|
encoder->possible_crtcs = drm_crtc_mask(&output->crtc);
|
|
|
|
/* Attach the encoder and the connector */
|
|
ret = drm_connector_attach_encoder(connector, encoder);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to attach connector to encoder\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Initialize the writeback component */
|
|
if (vkmsdev->config->writeback) {
|
|
writeback = vkms_enable_writeback_connector(vkmsdev, output);
|
|
if (writeback)
|
|
DRM_ERROR("Failed to init writeback connector\n");
|
|
}
|
|
|
|
drm_mode_config_reset(dev);
|
|
|
|
return ret;
|
|
}
|