118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
// 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);
|
|
}
|