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backend/drm: add support for custom modes

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Use the CVT algorithm to create a drmModeModeInfo.
This commit is contained in:
Simon Ser 2019-10-26 22:35:51 +02:00 • committed by Drew DeVault
parent e97c2c3639
commit 0e57effd38
5 changed files with 307 additions and 6 deletions
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27
backend/drm/drm.c
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@ -23,6 +23,7 @@
#include <wlr/util/log.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "backend/drm/cvt.h"
#include "backend/drm/drm.h"
#include "backend/drm/iface.h"
#include "backend/drm/util.h"
@ -672,25 +673,39 @@ bool drm_connector_set_mode(struct wlr_output *output,
return true;
}
bool wlr_drm_connector_add_mode(struct wlr_output *output,
static bool drm_connector_set_custom_mode(struct wlr_output *output,
int32_t width, int32_t height, int32_t refresh) {
drmModeModeInfo mode = {0};
generate_cvt_mode(&mode, width, height, (float)refresh / 1000, false, false);
mode.type = DRM_MODE_TYPE_USERDEF;
struct wlr_output_mode *wlr_mode = wlr_drm_connector_add_mode(output, &mode);
if (wlr_mode == NULL) {
return false;
}
return drm_connector_set_mode(output, wlr_mode);
}
struct wlr_output_mode *wlr_drm_connector_add_mode(struct wlr_output *output,
const drmModeModeInfo *modeinfo) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
if (modeinfo->type != DRM_MODE_TYPE_USERDEF) {
return false;
return NULL;
}
struct wlr_output_mode *wlr_mode;
wl_list_for_each(wlr_mode, &conn->output.modes, link) {
struct wlr_drm_mode *mode = (struct wlr_drm_mode *)wlr_mode;
if (memcmp(&mode->drm_mode, modeinfo, sizeof(*modeinfo)) == 0) {
return true;
return wlr_mode;
}
}
struct wlr_drm_mode *mode = calloc(1, sizeof(*mode));
if (!mode) {
return false;
return NULL;
}
memcpy(&mode->drm_mode, modeinfo, sizeof(*modeinfo));
@ -703,7 +718,8 @@ bool wlr_drm_connector_add_mode(struct wlr_output *output,
mode->wlr_mode.width, mode->wlr_mode.height,
mode->wlr_mode.refresh);
wl_list_insert(&conn->output.modes, &mode->wlr_mode.link);
return true;
return &mode->wlr_mode;
}
static bool drm_connector_set_cursor(struct wlr_output *output,
@ -988,6 +1004,7 @@ static void drm_connector_destroy(struct wlr_output *output) {
static const struct wlr_output_impl output_impl = {
.enable = enable_drm_connector,
.set_mode = drm_connector_set_mode,
.set_custom_mode = drm_connector_set_custom_mode,
.set_cursor = drm_connector_set_cursor,
.move_cursor = drm_connector_move_cursor,
.destroy = drm_connector_destroy,