wlroots-hyprland/backend/drm/drm.c

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#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <errno.h>
#include <time.h>
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#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_mode.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <gbm.h>
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#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <wayland-server.h>
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#include <wlr/backend/interface.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/util/log.h>
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#include <wlr/render/matrix.h>
#include <wlr/render/gles2.h>
#include <wlr/render.h>
#include "backend/drm/drm.h"
#include "backend/drm/iface.h"
#include "backend/drm/util.h"
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bool wlr_drm_check_features(struct wlr_drm_backend *drm) {
if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1)) {
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wlr_log(L_ERROR, "DRM universal planes unsupported");
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return false;
}
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if (getenv("WLR_DRM_NO_ATOMIC")) {
wlr_log(L_DEBUG, "WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
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drm->iface = &legacy_iface;
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} else if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
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wlr_log(L_DEBUG, "Atomic modesetting unsupported, using legacy DRM interface");
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drm->iface = &legacy_iface;
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} else {
wlr_log(L_DEBUG, "Using atomic DRM interface");
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drm->iface = &atomic_iface;
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}
return true;
}
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static int cmp_plane(const void *arg1, const void *arg2) {
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const struct wlr_drm_plane *a = arg1;
const struct wlr_drm_plane *b = arg2;
return (int)a->type - (int)b->type;
}
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static bool init_planes(struct wlr_drm_backend *drm) {
drmModePlaneRes *plane_res = drmModeGetPlaneResources(drm->fd);
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if (!plane_res) {
wlr_log_errno(L_ERROR, "Failed to get DRM plane resources");
return false;
}
wlr_log(L_INFO, "Found %"PRIu32" DRM planes", plane_res->count_planes);
if (plane_res->count_planes == 0) {
drmModeFreePlaneResources(plane_res);
return true;
}
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drm->num_planes = plane_res->count_planes;
drm->planes = calloc(drm->num_planes, sizeof(*drm->planes));
if (!drm->planes) {
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wlr_log_errno(L_ERROR, "Allocation failed");
goto error_res;
}
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for (size_t i = 0; i < drm->num_planes; ++i) {
struct wlr_drm_plane *p = &drm->planes[i];
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drmModePlane *plane = drmModeGetPlane(drm->fd, plane_res->planes[i]);
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if (!plane) {
wlr_log_errno(L_ERROR, "Failed to get DRM plane");
goto error_planes;
}
p->id = plane->plane_id;
p->possible_crtcs = plane->possible_crtcs;
uint64_t type;
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if (!wlr_drm_get_plane_props(drm->fd, p->id, &p->props) ||
!wlr_drm_get_prop(drm->fd, p->id, p->props.type, &type)) {
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drmModeFreePlane(plane);
goto error_planes;
}
p->type = type;
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drm->num_type_planes[type]++;
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drmModeFreePlane(plane);
}
wlr_log(L_INFO, "(%zu overlay, %zu primary, %zu cursor)",
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drm->num_overlay_planes,
drm->num_primary_planes,
drm->num_cursor_planes);
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qsort(drm->planes, drm->num_planes, sizeof(*drm->planes), cmp_plane);
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drm->overlay_planes = drm->planes;
drm->primary_planes = drm->overlay_planes
+ drm->num_overlay_planes;
drm->cursor_planes = drm->primary_planes
+ drm->num_primary_planes;
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drmModeFreePlaneResources(plane_res);
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return true;
error_planes:
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free(drm->planes);
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error_res:
drmModeFreePlaneResources(plane_res);
return false;
}
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bool wlr_drm_resources_init(struct wlr_drm_backend *drm) {
drmModeRes *res = drmModeGetResources(drm->fd);
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if (!res) {
wlr_log_errno(L_ERROR, "Failed to get DRM resources");
return false;
}
wlr_log(L_INFO, "Found %d DRM CRTCs", res->count_crtcs);
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drm->num_crtcs = res->count_crtcs;
drm->crtcs = calloc(drm->num_crtcs, sizeof(drm->crtcs[0]));
if (!drm->crtcs) {
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wlr_log_errno(L_ERROR, "Allocation failed");
goto error_res;
}
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
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crtc->id = res->crtcs[i];
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wlr_drm_get_crtc_props(drm->fd, crtc->id, &crtc->props);
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}
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if (!init_planes(drm)) {
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goto error_crtcs;
}
drmModeFreeResources(res);
return true;
error_crtcs:
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free(drm->crtcs);
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error_res:
drmModeFreeResources(res);
return false;
}
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void wlr_drm_resources_free(struct wlr_drm_backend *drm) {
if (!drm) {
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return;
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}
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
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drmModeAtomicFree(crtc->atomic);
if (crtc->mode_id) {
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drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
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}
}
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for (size_t i = 0; i < drm->num_planes; ++i) {
struct wlr_drm_plane *plane = &drm->planes[i];
if (plane->cursor_bo) {
gbm_bo_destroy(plane->cursor_bo);
}
if (plane->wlr_tex) {
wlr_texture_destroy(plane->wlr_tex);
}
if (plane->wlr_rend) {
wlr_renderer_destroy(plane->wlr_rend);
}
}
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free(drm->crtcs);
free(drm->planes);
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}
static void wlr_drm_connector_make_current(struct wlr_output *output) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
wlr_drm_surface_make_current(&conn->crtc->primary->surf);
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}
static void wlr_drm_connector_swap_buffers(struct wlr_output *output) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = conn->drm;
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struct wlr_drm_crtc *crtc = conn->crtc;
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struct wlr_drm_plane *plane = crtc->primary;
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struct gbm_bo *bo = wlr_drm_surface_swap_buffers(&plane->surf);
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if (drm->parent) {
bo = wlr_drm_surface_mgpu_copy(&plane->mgpu_surf, bo);
}
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uint32_t fb_id = get_fb_for_bo(bo);
if (drm->iface->crtc_pageflip(drm, conn, crtc, fb_id, NULL)) {
conn->pageflip_pending = true;
} else {
wl_event_source_timer_update(conn->retry_pageflip,
1000.0f / conn->output.current_mode->refresh);
}
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}
static void wlr_drm_connector_set_gamma(struct wlr_output *output,
uint16_t size, uint16_t *r, uint16_t *g, uint16_t *b) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
drmModeCrtcSetGamma(conn->drm->fd, conn->crtc->id, size, r, g, b);
}
static uint16_t wlr_drm_connector_get_gamma_size(struct wlr_output *output) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
drmModeCrtc *crtc = conn->old_crtc;
return crtc ? crtc->gamma_size : 0;
}
void wlr_drm_connector_start_renderer(struct wlr_drm_connector *conn) {
if (conn->state != WLR_DRM_CONN_CONNECTED) {
return;
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}
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struct wlr_drm_backend *drm = conn->drm;
struct wlr_drm_crtc *crtc = conn->crtc;
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struct wlr_drm_plane *plane = crtc->primary;
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struct gbm_bo *bo = wlr_drm_surface_get_front(
drm->parent ? &plane->mgpu_surf : &plane->surf);
uint32_t fb_id = get_fb_for_bo(bo);
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struct wlr_drm_mode *mode = (struct wlr_drm_mode *)conn->output.current_mode;
if (drm->iface->crtc_pageflip(drm, conn, crtc, fb_id, &mode->drm_mode)) {
conn->pageflip_pending = true;
} else {
wl_event_source_timer_update(conn->retry_pageflip,
1000.0f / conn->output.current_mode->refresh);
}
}
static void wlr_drm_connector_enable(struct wlr_output *output, bool enable) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
if (conn->state != WLR_DRM_CONN_CONNECTED) {
return;
}
struct wlr_drm_backend *drm = conn->drm;
drm->iface->conn_enable(drm, conn, enable);
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if (enable) {
wlr_drm_connector_start_renderer(conn);
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}
}
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static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in) {
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// overlay, primary, cursor
for (int type = 0; type < 3; ++type) {
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if (drm->num_type_planes[type] == 0) {
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continue;
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}
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uint32_t possible[drm->num_type_planes[type]];
uint32_t crtc[drm->num_crtcs];
uint32_t crtc_res[drm->num_crtcs];
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for (size_t i = 0; i < drm->num_type_planes[type]; ++i) {
possible[i] = drm->type_planes[type][i].possible_crtcs;
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}
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
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if (crtc_in[i] == UNMATCHED) {
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crtc[i] = SKIP;
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} else if (drm->crtcs[i].planes[type]) {
crtc[i] = drm->crtcs[i].planes[type]
- drm->type_planes[type];
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} else {
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crtc[i] = UNMATCHED;
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}
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}
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match_obj(drm->num_type_planes[type], possible,
drm->num_crtcs, crtc, crtc_res);
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
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if (crtc_res[i] == UNMATCHED || crtc_res[i] == SKIP) {
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continue;
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}
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struct wlr_drm_crtc *c = &drm->crtcs[i];
struct wlr_drm_plane **old = &c->planes[type];
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struct wlr_drm_plane *new = &drm->type_planes[type][crtc_res[i]];
if (*old != new) {
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if (*old) {
wlr_drm_surface_finish(&(*old)->surf);
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}
wlr_drm_surface_finish(&new->surf);
*old = new;
}
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}
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}
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}
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static void realloc_crtcs(struct wlr_drm_backend *drm, struct wlr_drm_connector *conn) {
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uint32_t crtc[drm->num_crtcs];
uint32_t crtc_res[drm->num_crtcs];
uint32_t possible_crtc[drm->outputs->length];
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
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crtc[i] = UNMATCHED;
}
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memset(possible_crtc, 0, sizeof(possible_crtc));
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ssize_t index = -1;
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for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_drm_connector *c = drm->outputs->items[i];
if (c == conn) {
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index = i;
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}
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if (c->state != WLR_DRM_CONN_CONNECTED) {
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continue;
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}
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possible_crtc[i] = c->possible_crtc;
crtc[c->crtc - drm->crtcs] = i;
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}
assert(index != -1);
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possible_crtc[index] = conn->possible_crtc;
match_obj(drm->outputs->length, possible_crtc, drm->num_crtcs,
crtc, crtc_res);
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bool matched = false;
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
// We don't want any of the current monitors to be deactivated.
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if (crtc[i] != UNMATCHED && crtc_res[i] == UNMATCHED) {
return;
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}
if (crtc_res[i] == index) {
matched = true;
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}
}
// There is no point doing anything if this monitor doesn't get activated
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if (!matched) {
return;
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}
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
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if (crtc_res[i] == UNMATCHED) {
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continue;
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}
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if (crtc_res[i] != crtc[i]) {
struct wlr_drm_connector *c = drm->outputs->items[crtc_res[i]];
c->crtc = &drm->crtcs[i];
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}
}
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realloc_planes(drm, crtc_res);
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}
static uint32_t get_possible_crtcs(int fd, uint32_t conn_id) {
drmModeConnector *conn = drmModeGetConnector(fd, conn_id);
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if (!conn) {
wlr_log_errno(L_ERROR, "Failed to get DRM connector");
return 0;
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}
if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) {
wlr_log(L_ERROR, "Output is not connected");
goto error_conn;
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}
drmModeEncoder *enc = NULL;
for (int i = 0; !enc && i < conn->count_encoders; ++i) {
enc = drmModeGetEncoder(fd, conn->encoders[i]);
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}
if (!enc) {
wlr_log(L_ERROR, "Failed to get DRM encoder");
goto error_conn;
}
uint32_t ret = enc->possible_crtcs;
drmModeFreeEncoder(enc);
drmModeFreeConnector(conn);
return ret;
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error_conn:
drmModeFreeConnector(conn);
return 0;
}
static bool wlr_drm_connector_set_mode(struct wlr_output *output,
struct wlr_output_mode *mode) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = conn->drm;
wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", conn->output.name,
mode->width, mode->height, mode->refresh);
conn->possible_crtc = get_possible_crtcs(drm->fd, conn->id);
if (conn->possible_crtc == 0) {
goto error_conn;
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}
realloc_crtcs(drm, conn);
if (!conn->crtc) {
wlr_log(L_ERROR, "Unable to match %s with a CRTC", conn->output.name);
goto error_conn;
}
struct wlr_drm_crtc *crtc = conn->crtc;
wlr_log(L_DEBUG, "%s: crtc=%ju ovr=%jd pri=%jd cur=%jd", conn->output.name,
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crtc - drm->crtcs,
crtc->overlay ? crtc->overlay - drm->overlay_planes : -1,
crtc->primary ? crtc->primary - drm->primary_planes : -1,
crtc->cursor ? crtc->cursor - drm->cursor_planes : -1);
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conn->state = WLR_DRM_CONN_CONNECTED;
conn->output.width = mode->width;
conn->output.height = mode->height;
conn->output.current_mode = mode;
wl_signal_emit(&conn->output.events.resolution, &conn->output);
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// Since realloc_crtcs can deallocate planes on OTHER outputs,
// we actually need to reinitalise all of them
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for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_drm_connector *conn = drm->outputs->items[i];
struct wlr_output_mode *mode = conn->output.current_mode;
struct wlr_drm_crtc *crtc = conn->crtc;
if (conn->state != WLR_DRM_CONN_CONNECTED) {
continue;
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}
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if (!wlr_drm_plane_surfaces_init(crtc->primary, drm,
mode->width, mode->height, GBM_FORMAT_XRGB8888)) {
wlr_log(L_ERROR, "Failed to initalise renderer for plane");
goto error_conn;
}
wlr_drm_connector_start_renderer(conn);
}
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return true;
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error_conn:
wlr_drm_connector_cleanup(conn);
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return false;
}
static void wlr_drm_connector_transform(struct wlr_output *output,
enum wl_output_transform transform) {
output->transform = transform;
}
static bool wlr_drm_connector_set_cursor(struct wlr_output *output,
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const uint8_t *buf, int32_t stride, uint32_t width, uint32_t height,
int32_t hotspot_x, int32_t hotspot_y, bool update_pixels) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = conn->drm;
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struct wlr_drm_renderer *renderer = &drm->renderer;
struct wlr_drm_crtc *crtc = conn->crtc;
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struct wlr_drm_plane *plane = crtc->cursor;
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if (!buf && update_pixels) {
// Hide the cursor
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return drm->iface->crtc_set_cursor(drm, crtc, NULL);
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}
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// We don't have a real cursor plane, so we make a fake one
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if (!plane) {
plane = calloc(1, sizeof(*plane));
if (!plane) {
wlr_log_errno(L_ERROR, "Allocation failed");
return false;
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}
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crtc->cursor = plane;
}
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if (!plane->surf.gbm) {
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int ret;
uint64_t w, h;
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ret = drmGetCap(drm->fd, DRM_CAP_CURSOR_WIDTH, &w);
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w = ret ? 64 : w;
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ret = drmGetCap(drm->fd, DRM_CAP_CURSOR_HEIGHT, &h);
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h = ret ? 64 : h;
if (width > w || height > h) {
wlr_log(L_INFO, "Cursor too large (max %dx%d)", (int)w, (int)h);
return false;
}
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if (!wlr_drm_surface_init(&plane->surf, renderer, w, h, GBM_FORMAT_ARGB8888, 0)) {
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wlr_log(L_ERROR, "Cannot allocate cursor resources");
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return false;
}
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plane->cursor_bo = gbm_bo_create(renderer->gbm, w, h, GBM_FORMAT_ARGB8888,
GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
if (!plane->cursor_bo) {
wlr_log_errno(L_ERROR, "Failed to create cursor bo");
return false;
}
// OpenGL will read the pixels out upside down,
// so we need to flip the image vertically
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wlr_matrix_texture(plane->matrix, plane->surf.width, plane->surf.height,
conn->output.transform ^ WL_OUTPUT_TRANSFORM_FLIPPED_180);
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// TODO the image needs to be rotated depending on the output rotation
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plane->wlr_rend = wlr_gles2_renderer_create(&drm->backend);
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if (!plane->wlr_rend) {
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return false;
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}
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plane->wlr_tex = wlr_render_texture_create(plane->wlr_rend);
if (!plane->wlr_tex) {
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return false;
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}
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}
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switch (output->transform) {
case WL_OUTPUT_TRANSFORM_90:
output->cursor.hotspot_x = hotspot_x;
output->cursor.hotspot_y = -plane->surf.height + hotspot_y;
break;
case WL_OUTPUT_TRANSFORM_180:
output->cursor.hotspot_x = plane->surf.width - hotspot_x;
output->cursor.hotspot_y = plane->surf.height - hotspot_y;
break;
case WL_OUTPUT_TRANSFORM_270:
output->cursor.hotspot_x = -plane->surf.height + hotspot_x;
output->cursor.hotspot_y = hotspot_y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
output->cursor.hotspot_x = plane->surf.width - hotspot_x;
output->cursor.hotspot_y = hotspot_y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
output->cursor.hotspot_x = hotspot_x;
output->cursor.hotspot_y = -hotspot_y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
output->cursor.hotspot_x = hotspot_x;
output->cursor.hotspot_y = plane->surf.height - hotspot_y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
output->cursor.hotspot_x = -plane->surf.height + hotspot_x;
output->cursor.hotspot_y = plane->surf.width - hotspot_y;
break;
}
if (!update_pixels) {
// Only update the cursor hotspot
return true;
}
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struct gbm_bo *bo = plane->cursor_bo;
uint32_t bo_width = gbm_bo_get_width(bo);
uint32_t bo_height = gbm_bo_get_height(bo);
uint32_t bo_stride;
void *bo_data;
if (!gbm_bo_map(bo, 0, 0, bo_width, bo_height,
GBM_BO_TRANSFER_WRITE, &bo_stride, &bo_data)) {
wlr_log_errno(L_ERROR, "Unable to map buffer");
return false;
}
wlr_drm_surface_make_current(&plane->surf);
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wlr_texture_upload_pixels(plane->wlr_tex, WL_SHM_FORMAT_ARGB8888,
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stride, width, height, buf);
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glViewport(0, 0, plane->surf.width, plane->surf.height);
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glClear(GL_COLOR_BUFFER_BIT);
float matrix[16];
wlr_texture_get_matrix(plane->wlr_tex, &matrix, &plane->matrix, 0, 0);
wlr_render_with_matrix(plane->wlr_rend, plane->wlr_tex, &matrix);
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glFinish();
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, bo_stride);
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glReadPixels(0, 0, plane->surf.width, plane->surf.height, GL_BGRA_EXT, GL_UNSIGNED_BYTE, bo_data);
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glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
wlr_drm_surface_swap_buffers(&plane->surf);
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gbm_bo_unmap(bo, bo_data);
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return drm->iface->crtc_set_cursor(drm, crtc, bo);
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}
static bool wlr_drm_connector_move_cursor(struct wlr_output *output,
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int x, int y) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = conn->drm;
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int width, height, tmp;
wlr_output_effective_resolution(output, &width, &height);
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switch (output->transform) {
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case WL_OUTPUT_TRANSFORM_NORMAL:
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case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
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// nothing to do
break;
case WL_OUTPUT_TRANSFORM_270:
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case WL_OUTPUT_TRANSFORM_FLIPPED_270:
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tmp = x;
x = y;
y = -(tmp - width);
break;
case WL_OUTPUT_TRANSFORM_90:
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case WL_OUTPUT_TRANSFORM_FLIPPED_90:
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tmp = x;
x = -(y - height);
y = tmp;
break;
}
return drm->iface->crtc_move_cursor(drm, conn->crtc, x, y);
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}
static void wlr_drm_connector_destroy(struct wlr_output *output) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
wlr_drm_connector_cleanup(conn);
wl_event_source_remove(conn->retry_pageflip);
free(conn);
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}
static struct wlr_output_impl output_impl = {
.enable = wlr_drm_connector_enable,
.set_mode = wlr_drm_connector_set_mode,
.transform = wlr_drm_connector_transform,
.set_cursor = wlr_drm_connector_set_cursor,
.move_cursor = wlr_drm_connector_move_cursor,
.destroy = wlr_drm_connector_destroy,
.make_current = wlr_drm_connector_make_current,
.swap_buffers = wlr_drm_connector_swap_buffers,
.set_gamma = wlr_drm_connector_set_gamma,
.get_gamma_size = wlr_drm_connector_get_gamma_size,
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};
static int retry_pageflip(void *data) {
struct wlr_drm_connector *conn = data;
wlr_log(L_INFO, "%s: Retrying pageflip", conn->output.name);
wlr_drm_connector_start_renderer(conn);
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return 0;
}
static int find_id(const void *item, const void *cmp_to) {
const struct wlr_drm_connector *conn = item;
const uint32_t *id = cmp_to;
return (int)conn->id - (int)*id;
}
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static const int32_t subpixel_map[] = {
[DRM_MODE_SUBPIXEL_UNKNOWN] = WL_OUTPUT_SUBPIXEL_UNKNOWN,
[DRM_MODE_SUBPIXEL_HORIZONTAL_RGB] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB,
[DRM_MODE_SUBPIXEL_HORIZONTAL_BGR] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR,
[DRM_MODE_SUBPIXEL_VERTICAL_RGB] = WL_OUTPUT_SUBPIXEL_VERTICAL_RGB,
[DRM_MODE_SUBPIXEL_VERTICAL_BGR] = WL_OUTPUT_SUBPIXEL_VERTICAL_BGR,
[DRM_MODE_SUBPIXEL_NONE] = WL_OUTPUT_SUBPIXEL_NONE,
};
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void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
wlr_log(L_INFO, "Scanning DRM connectors");
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drmModeRes *res = drmModeGetResources(drm->fd);
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if (!res) {
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wlr_log_errno(L_ERROR, "Failed to get DRM resources");
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return;
}
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size_t seen_len = drm->outputs->length;
// +1 so it can never be 0
bool seen[seen_len + 1];
memset(seen, 0, sizeof(seen));
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for (int i = 0; i < res->count_connectors; ++i) {
drmModeConnector *drm_conn = drmModeGetConnector(drm->fd,
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res->connectors[i]);
if (!drm_conn) {
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wlr_log_errno(L_ERROR, "Failed to get DRM connector");
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continue;
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}
struct wlr_drm_connector *wlr_conn;
int index = list_seq_find(drm->outputs, find_id, &drm_conn->connector_id);
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if (index == -1) {
wlr_conn = calloc(1, sizeof(*wlr_conn));
if (!wlr_conn) {
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wlr_log_errno(L_ERROR, "Allocation failed");
drmModeFreeConnector(drm_conn);
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continue;
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}
wlr_output_init(&wlr_conn->output, &output_impl);
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struct wl_event_loop *ev = wl_display_get_event_loop(drm->display);
wlr_conn->retry_pageflip = wl_event_loop_add_timer(ev, retry_pageflip,
wlr_conn);
wlr_conn->drm = drm;
wlr_conn->state = WLR_DRM_CONN_DISCONNECTED;
wlr_conn->id = drm_conn->connector_id;
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drmModeEncoder *curr_enc = drmModeGetEncoder(drm->fd,
drm_conn->encoder_id);
if (curr_enc) {
wlr_conn->old_crtc = drmModeGetCrtc(drm->fd, curr_enc->crtc_id);
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drmModeFreeEncoder(curr_enc);
}
wlr_conn->output.phys_width = drm_conn->mmWidth;
wlr_conn->output.phys_height = drm_conn->mmHeight;
wlr_conn->output.subpixel = subpixel_map[drm_conn->subpixel];
snprintf(wlr_conn->output.name, sizeof(wlr_conn->output.name),
"%s-%"PRIu32,
conn_get_name(drm_conn->connector_type),
drm_conn->connector_type_id);
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wlr_drm_get_connector_props(drm->fd, wlr_conn->id, &wlr_conn->props);
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size_t edid_len = 0;
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uint8_t *edid = wlr_drm_get_prop_blob(drm->fd,
wlr_conn->id, wlr_conn->props.edid, &edid_len);
parse_edid(&wlr_conn->output, edid_len, edid);
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free(edid);
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if (list_add(drm->outputs, wlr_conn) == -1) {
wlr_log_errno(L_ERROR, "Allocation failed");
drmModeFreeConnector(drm_conn);
wl_event_source_remove(wlr_conn->retry_pageflip);
free(wlr_conn);
continue;
}
wlr_output_create_global(&wlr_conn->output, drm->display);
wlr_log(L_INFO, "Found display '%s'", wlr_conn->output.name);
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} else {
wlr_conn = drm->outputs->items[index];
seen[index] = true;
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}
if (wlr_conn->state == WLR_DRM_CONN_DISCONNECTED &&
drm_conn->connection == DRM_MODE_CONNECTED) {
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wlr_log(L_INFO, "'%s' connected", wlr_conn->output.name);
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wlr_log(L_INFO, "Detected modes:");
for (int i = 0; i < drm_conn->count_modes; ++i) {
struct wlr_drm_mode *mode = calloc(1, sizeof(*mode));
if (!mode) {
wlr_log_errno(L_ERROR, "Allocation failed");
continue;
}
mode->drm_mode = drm_conn->modes[i];
mode->wlr_mode.width = mode->drm_mode.hdisplay;
mode->wlr_mode.height = mode->drm_mode.vdisplay;
mode->wlr_mode.refresh = calculate_refresh_rate(&mode->drm_mode);
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wlr_log(L_INFO, " %"PRId32"@%"PRId32"@%"PRId32,
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mode->wlr_mode.width, mode->wlr_mode.height,
mode->wlr_mode.refresh);
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if (list_add(wlr_conn->output.modes, mode) == -1) {
wlr_log_errno(L_ERROR, "Allocation failed");
free(mode);
continue;
}
}
2017-05-01 05:20:48 +02:00
wlr_conn->state = WLR_DRM_CONN_NEEDS_MODESET;
wlr_log(L_INFO, "Sending modesetting signal for '%s'",
wlr_conn->output.name);
wl_signal_emit(&drm->backend.events.output_add, &wlr_conn->output);
} else if (wlr_conn->state == WLR_DRM_CONN_CONNECTED &&
drm_conn->connection != DRM_MODE_CONNECTED) {
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wlr_log(L_INFO, "'%s' disconnected", wlr_conn->output.name);
wlr_drm_connector_cleanup(wlr_conn);
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}
drmModeFreeConnector(drm_conn);
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}
drmModeFreeResources(res);
for (size_t i = seen_len; i-- > 0;) {
if (seen[i]) {
continue;
}
struct wlr_drm_connector *conn = drm->outputs->items[i];
wlr_log(L_INFO, "'%s' disappeared", conn->output.name);
wlr_drm_connector_cleanup(conn);
drmModeFreeCrtc(conn->old_crtc);
wl_event_source_remove(conn->retry_pageflip);
free(conn);
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list_del(drm->outputs, i);
}
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}
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static void page_flip_handler(int fd, unsigned seq,
unsigned tv_sec, unsigned tv_usec, void *user) {
struct wlr_drm_connector *conn = user;
struct wlr_drm_backend *drm = conn->drm;
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conn->pageflip_pending = false;
if (conn->state != WLR_DRM_CONN_CONNECTED) {
return;
}
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wlr_drm_surface_post(&conn->crtc->primary->surf);
if (drm->parent) {
wlr_drm_surface_post(&conn->crtc->primary->mgpu_surf);
}
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if (drm->session->active) {
wl_signal_emit(&conn->output.events.frame, &conn->output);
}
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}
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int wlr_drm_event(int fd, uint32_t mask, void *data) {
drmEventContext event = {
.version = DRM_EVENT_CONTEXT_VERSION,
.page_flip_handler = page_flip_handler,
};
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drmHandleEvent(fd, &event);
return 1;
}
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void wlr_drm_restore_outputs(struct wlr_drm_backend *drm) {
uint64_t to_close = (1 << drm->outputs->length) - 1;
for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_drm_connector *conn = drm->outputs->items[i];
if (conn->state == WLR_DRM_CONN_CONNECTED) {
conn->state = WLR_DRM_CONN_CLEANUP;
}
}
time_t timeout = time(NULL) + 5;
while (to_close && time(NULL) < timeout) {
wlr_drm_event(drm->fd, 0, NULL);
for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_drm_connector *conn = drm->outputs->items[i];
if (conn->state != WLR_DRM_CONN_CLEANUP || !conn->pageflip_pending) {
to_close &= ~(1 << i);
}
}
}
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if (to_close) {
wlr_log(L_ERROR, "Timed out stopping output renderers");
}
for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_drm_connector *conn = drm->outputs->items[i];
drmModeCrtc *crtc = conn->old_crtc;
if (!crtc) {
continue;
}
drmModeSetCrtc(drm->fd, crtc->crtc_id, crtc->buffer_id, crtc->x, crtc->y,
&conn->id, 1, &crtc->mode);
drmModeFreeCrtc(crtc);
}
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}
void wlr_drm_connector_cleanup(struct wlr_drm_connector *conn) {
if (!conn) {
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return;
}
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struct wlr_drm_backend *drm = conn->drm;
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switch (conn->state) {
case WLR_DRM_CONN_CONNECTED:
case WLR_DRM_CONN_CLEANUP:;
struct wlr_drm_crtc *crtc = conn->crtc;
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for (int i = 0; i < 3; ++i) {
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if (!crtc->planes[i]) {
continue;
}
wlr_drm_surface_finish(&crtc->planes[i]->surf);
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wlr_drm_surface_finish(&crtc->planes[i]->mgpu_surf);
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if (crtc->planes[i]->id == 0) {
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free(crtc->planes[i]);
crtc->planes[i] = NULL;
}
}
conn->crtc = NULL;
conn->possible_crtc = 0;
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/* Fallthrough */
case WLR_DRM_CONN_NEEDS_MODESET:
wlr_log(L_INFO, "Emmiting destruction signal for '%s'",
conn->output.name);
wl_signal_emit(&drm->backend.events.output_remove, &conn->output);
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break;
case WLR_DRM_CONN_DISCONNECTED:
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break;
}
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conn->state = WLR_DRM_CONN_DISCONNECTED;
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}