diff options
Diffstat (limited to 'drivers/gpu/drm/vkms/vkms_output.c')
| -rw-r--r-- | drivers/gpu/drm/vkms/vkms_output.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c new file mode 100644 index 0000000000..5ce70dd946 --- /dev/null +++ b/drivers/gpu/drm/vkms/vkms_output.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include "vkms_drv.h" +#include <drm/drm_atomic_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_probe_helper.h> + +static const struct drm_connector_funcs vkms_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = drm_connector_cleanup, + .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 const struct drm_encoder_funcs vkms_encoder_funcs = { + .destroy = drm_encoder_cleanup, +}; + +static int vkms_conn_get_modes(struct drm_connector *connector) +{ + int count; + + 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, +}; + +static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index, + struct drm_crtc *crtc) +{ + struct vkms_plane *overlay; + + overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index); + if (IS_ERR(overlay)) + return PTR_ERR(overlay); + + if (!overlay->base.possible_crtcs) + overlay->base.possible_crtcs = drm_crtc_mask(crtc); + + return 0; +} + +int vkms_output_init(struct vkms_device *vkmsdev, int index) +{ + struct vkms_output *output = &vkmsdev->output; + struct drm_device *dev = &vkmsdev->drm; + struct drm_connector *connector = &output->connector; + struct drm_encoder *encoder = &output->encoder; + struct drm_crtc *crtc = &output->crtc; + struct vkms_plane *primary, *cursor = NULL; + int ret; + int writeback; + unsigned int n; + + primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); + if (IS_ERR(primary)) + return PTR_ERR(primary); + + if (vkmsdev->config->overlay) { + for (n = 0; n < NUM_OVERLAY_PLANES; n++) { + ret = vkms_add_overlay_plane(vkmsdev, index, crtc); + if (ret) + return ret; + } + } + + if (vkmsdev->config->cursor) { + cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); + if (IS_ERR(cursor)) + return PTR_ERR(cursor); + } + + ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base); + if (ret) + return ret; + + ret = drm_connector_init(dev, connector, &vkms_connector_funcs, + DRM_MODE_CONNECTOR_VIRTUAL); + if (ret) { + DRM_ERROR("Failed to init connector\n"); + goto err_connector; + } + + drm_connector_helper_add(connector, &vkms_conn_helper_funcs); + + ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs, + DRM_MODE_ENCODER_VIRTUAL, NULL); + if (ret) { + DRM_ERROR("Failed to init encoder\n"); + goto err_encoder; + } + encoder->possible_crtcs = 1; + + ret = drm_connector_attach_encoder(connector, encoder); + if (ret) { + DRM_ERROR("Failed to attach connector to encoder\n"); + goto err_attach; + } + + if (vkmsdev->config->writeback) { + writeback = vkms_enable_writeback_connector(vkmsdev); + if (writeback) + DRM_ERROR("Failed to init writeback connector\n"); + } + + drm_mode_config_reset(dev); + + return 0; + +err_attach: + drm_encoder_cleanup(encoder); + +err_encoder: + drm_connector_cleanup(connector); + +err_connector: + drm_crtc_cleanup(crtc); + + return ret; +} |