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