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backend/drm: move restore logic to drm.c 

We'll need to use a bunch of internal functions from that file in
the next commits.
This commit is contained in:
Simon Ser 2024-02-14 18:30:16 +01:00
parent 505175e56f
commit d2acd4c362
3 changed files with 43 additions and 41 deletions
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39
backend/drm/backend.c
View File

@ -95,24 +95,6 @@ struct wlr_backend *wlr_drm_backend_get_parent(struct wlr_backend *backend) {
return drm->parent ? &drm->parent->backend : NULL;
}
static void build_current_connector_state(struct wlr_output_state *state,
struct wlr_drm_connector *conn) {
bool enabled = conn->status != DRM_MODE_DISCONNECTED && conn->output.enabled;
wlr_output_state_init(state);
wlr_output_state_set_enabled(state, enabled);
if (!enabled) {
return;
}
if (conn->output.current_mode != NULL) {
wlr_output_state_set_mode(state, conn->output.current_mode);
} else {
wlr_output_state_set_custom_mode(state,
conn->output.width, conn->output.height, conn->output.refresh);
}
}
static void handle_session_active(struct wl_listener *listener, void *data) {
struct wlr_drm_backend *drm =
wl_container_of(listener, drm, session_active);
@ -125,26 +107,7 @@ static void handle_session_active(struct wl_listener *listener, void *data) {
}
scan_drm_connectors(drm, NULL);
// The previous DRM master leaves KMS in an undefined state. We need
// to restore out own state, but be careful to avoid invalid
// configurations. The connector/CRTC mapping may have changed, so
// first disable all CRTCs, then light up the ones we were using
// before the VT switch.
// TODO: better use the atomic API to improve restoration after a VT switch
if (!drm->iface->reset(drm)) {
wlr_log(WLR_ERROR, "Failed to reset state after VT switch");
}
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->connectors, link) {
struct wlr_output_state state;
build_current_connector_state(&state, conn);
if (!drm_connector_commit_state(conn, &state)) {
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to restore state after VT switch");
}
wlr_output_state_finish(&state);
}
restore_drm_device(drm);
}
static void handle_dev_change(struct wl_listener *listener, void *data) {

42
backend/drm/drm.c
View File

@ -766,7 +766,7 @@ bool drm_connector_supports_vrr(struct wlr_drm_connector *conn) {
return true;
}
bool drm_connector_commit_state(struct wlr_drm_connector *conn,
static bool drm_connector_commit_state(struct wlr_drm_connector *conn,
const struct wlr_output_state *base) {
struct wlr_drm_backend *drm = conn->backend;
@ -1720,6 +1720,46 @@ void scan_drm_leases(struct wlr_drm_backend *drm) {
drmFree(list);
}
static void build_current_connector_state(struct wlr_output_state *state,
struct wlr_drm_connector *conn) {
bool enabled = conn->status != DRM_MODE_DISCONNECTED && conn->output.enabled;
wlr_output_state_init(state);
wlr_output_state_set_enabled(state, enabled);
if (!enabled) {
return;
}
if (conn->output.current_mode != NULL) {
wlr_output_state_set_mode(state, conn->output.current_mode);
} else {
wlr_output_state_set_custom_mode(state,
conn->output.width, conn->output.height, conn->output.refresh);
}
}
void restore_drm_device(struct wlr_drm_backend *drm) {
// The previous DRM master leaves KMS in an undefined state. We need
// to restore out own state, but be careful to avoid invalid
// configurations. The connector/CRTC mapping may have changed, so
// first disable all CRTCs, then light up the ones we were using
// before the VT switch.
// TODO: better use the atomic API to improve restoration after a VT switch
if (!drm->iface->reset(drm)) {
wlr_log(WLR_ERROR, "Failed to reset state after VT switch");
}
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->connectors, link) {
struct wlr_output_state state;
build_current_connector_state(&state, conn);
if (!drm_connector_commit_state(conn, &state)) {
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to restore state after VT switch");
}
wlr_output_state_finish(&state);
}
}
static int mhz_to_nsec(int mhz) {
return 1000000000000LL / mhz;
}

3
include/backend/drm/drm.h
View File

@ -185,10 +185,9 @@ void finish_drm_resources(struct wlr_drm_backend *drm);
void scan_drm_connectors(struct wlr_drm_backend *state,
struct wlr_device_hotplug_event *event);
void scan_drm_leases(struct wlr_drm_backend *drm);
void restore_drm_device(struct wlr_drm_backend *drm);
int handle_drm_event(int fd, uint32_t mask, void *data);
void destroy_drm_connector(struct wlr_drm_connector *conn);
bool drm_connector_commit_state(struct wlr_drm_connector *conn,
const struct wlr_output_state *state);
bool drm_connector_is_cursor_visible(struct wlr_drm_connector *conn);
bool drm_connector_supports_vrr(struct wlr_drm_connector *conn);
size_t drm_crtc_get_gamma_lut_size(struct wlr_drm_backend *drm,