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b0a76faea6
A specific allocation for the connector is not strictly necessary at this point, but in order to implement dynamic configuration of VKMS (configFS), it will be easier to have one allocation per connector. Reviewed-by: Maxime Ripard <mripard@kernel.org> Reviewed-by: José Expósito <jose.exposito89@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250117-b4-vkms-allocated-v4-1-8ec8fd21aaf6@bootlin.com Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include "vkms_drv.h"
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_probe_helper.h>
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static const struct drm_connector_funcs vkms_connector_funcs = {
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.fill_modes = drm_helper_probe_single_connector_modes,
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.reset = drm_atomic_helper_connector_reset,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static int vkms_conn_get_modes(struct drm_connector *connector)
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{
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int count;
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/* Use the default modes list from DRM */
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count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
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drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
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return count;
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}
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static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
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.get_modes = vkms_conn_get_modes,
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};
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int vkms_output_init(struct vkms_device *vkmsdev)
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{
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struct vkms_output *output = &vkmsdev->output;
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struct drm_device *dev = &vkmsdev->drm;
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struct drm_connector *connector;
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struct drm_encoder *encoder = &output->encoder;
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struct drm_crtc *crtc = &output->crtc;
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struct vkms_plane *primary, *overlay, *cursor = NULL;
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int ret;
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int writeback;
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unsigned int n;
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/*
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* Initialize used plane. One primary plane is required to perform the composition.
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*
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* The overlay and cursor planes are not mandatory, but can be used to perform complex
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* composition.
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*/
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primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY);
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if (IS_ERR(primary))
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return PTR_ERR(primary);
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if (vkmsdev->config->cursor) {
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cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR);
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if (IS_ERR(cursor))
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return PTR_ERR(cursor);
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}
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ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base);
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if (ret)
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return ret;
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if (vkmsdev->config->overlay) {
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for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
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overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY);
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if (IS_ERR(overlay)) {
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DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n");
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return PTR_ERR(overlay);
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}
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overlay->base.possible_crtcs = drm_crtc_mask(crtc);
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}
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}
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connector = drmm_kzalloc(dev, sizeof(*connector), GFP_KERNEL);
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if (!connector) {
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DRM_ERROR("Failed to allocate connector\n");
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return -ENOMEM;
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}
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ret = drmm_connector_init(dev, connector, &vkms_connector_funcs,
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DRM_MODE_CONNECTOR_VIRTUAL, NULL);
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if (ret) {
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DRM_ERROR("Failed to init connector\n");
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return ret;
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}
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drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
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ret = drmm_encoder_init(dev, encoder, NULL,
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DRM_MODE_ENCODER_VIRTUAL, NULL);
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if (ret) {
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DRM_ERROR("Failed to init encoder\n");
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return ret;
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}
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encoder->possible_crtcs = drm_crtc_mask(crtc);
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ret = drm_connector_attach_encoder(connector, encoder);
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if (ret) {
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DRM_ERROR("Failed to attach connector to encoder\n");
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return ret;
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}
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if (vkmsdev->config->writeback) {
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writeback = vkms_enable_writeback_connector(vkmsdev, crtc);
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if (writeback)
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DRM_ERROR("Failed to init writeback connector\n");
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}
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drm_mode_config_reset(dev);
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return 0;
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return ret;
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}
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