// SPDX-License-Identifier: GPL-2.0 OR MIT
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/*
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* Xen para-virtual DRM device
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*
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* Copyright (C) 2016-2018 EPAM Systems Inc.
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*
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* Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
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*/
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_probe_helper.h>
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#include <video/videomode.h>
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#include "xen_drm_front.h"
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#include "xen_drm_front_conn.h"
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#include "xen_drm_front_kms.h"
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static struct xen_drm_front_drm_pipeline *
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to_xen_drm_pipeline(struct drm_connector *connector)
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{
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return container_of(connector, struct xen_drm_front_drm_pipeline, conn);
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}
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static const u32 plane_formats[] = {
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DRM_FORMAT_RGB565,
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DRM_FORMAT_RGB888,
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DRM_FORMAT_XRGB8888,
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DRM_FORMAT_ARGB8888,
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DRM_FORMAT_XRGB4444,
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DRM_FORMAT_ARGB4444,
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DRM_FORMAT_XRGB1555,
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DRM_FORMAT_ARGB1555,
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DRM_FORMAT_YUYV,
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};
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const u32 *xen_drm_front_conn_get_formats(int *format_count)
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{
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*format_count = ARRAY_SIZE(plane_formats);
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return plane_formats;
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}
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static int connector_detect(struct drm_connector *connector,
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struct drm_modeset_acquire_ctx *ctx,
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bool force)
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{
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struct xen_drm_front_drm_pipeline *pipeline =
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to_xen_drm_pipeline(connector);
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if (drm_dev_is_unplugged(connector->dev))
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pipeline->conn_connected = false;
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return pipeline->conn_connected ? connector_status_connected :
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connector_status_disconnected;
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}
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#define XEN_DRM_CRTC_VREFRESH_HZ 60
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static int connector_get_modes(struct drm_connector *connector)
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{
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struct xen_drm_front_drm_pipeline *pipeline =
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to_xen_drm_pipeline(connector);
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struct drm_display_mode *mode;
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struct videomode videomode;
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int width, height;
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mode = drm_mode_create(connector->dev);
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if (!mode)
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return 0;
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memset(&videomode, 0, sizeof(videomode));
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videomode.hactive = pipeline->width;
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videomode.vactive = pipeline->height;
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width = videomode.hactive + videomode.hfront_porch +
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videomode.hback_porch + videomode.hsync_len;
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height = videomode.vactive + videomode.vfront_porch +
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videomode.vback_porch + videomode.vsync_len;
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videomode.pixelclock = width * height * XEN_DRM_CRTC_VREFRESH_HZ;
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mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
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drm_display_mode_from_videomode(&videomode, mode);
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drm_mode_probed_add(connector, mode);
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return 1;
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}
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static const struct drm_connector_helper_funcs connector_helper_funcs = {
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.get_modes = connector_get_modes,
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.detect_ctx = connector_detect,
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};
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static const struct drm_connector_funcs connector_funcs = {
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = drm_connector_cleanup,
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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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int xen_drm_front_conn_init(struct xen_drm_front_drm_info *drm_info,
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struct drm_connector *connector)
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{
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struct xen_drm_front_drm_pipeline *pipeline =
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to_xen_drm_pipeline(connector);
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drm_connector_helper_add(connector, &connector_helper_funcs);
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pipeline->conn_connected = true;
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connector->polled = DRM_CONNECTOR_POLL_CONNECT |
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DRM_CONNECTOR_POLL_DISCONNECT;
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return drm_connector_init(drm_info->drm_dev, connector,
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&connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
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}
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