247 lines
6.8 KiB
C
247 lines
6.8 KiB
C
#include <assert.h>
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#include <stdlib.h>
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#include <wlr/util/log.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include "backend/drm/drm.h"
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#include "backend/drm/fb.h"
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#include "backend/drm/iface.h"
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#include "backend/drm/util.h"
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static bool legacy_fb_props_match(struct wlr_drm_fb *fb1,
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struct wlr_drm_fb *fb2) {
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struct wlr_dmabuf_attributes dmabuf1 = {0}, dmabuf2 = {0};
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if (!wlr_buffer_get_dmabuf(fb1->wlr_buf, &dmabuf1) ||
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!wlr_buffer_get_dmabuf(fb2->wlr_buf, &dmabuf2)) {
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return false;
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}
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if (dmabuf1.width != dmabuf2.width ||
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dmabuf1.height != dmabuf2.height ||
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dmabuf1.format != dmabuf2.format ||
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dmabuf1.modifier != dmabuf2.modifier ||
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dmabuf1.n_planes != dmabuf2.n_planes) {
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return false;
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}
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for (int i = 0; i < dmabuf1.n_planes; i++) {
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if (dmabuf1.stride[i] != dmabuf2.stride[i] ||
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dmabuf1.offset[i] != dmabuf2.offset[i]) {
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return false;
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}
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}
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return true;
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}
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static bool legacy_crtc_test(struct wlr_drm_connector *conn,
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const struct wlr_drm_connector_state *state) {
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struct wlr_drm_crtc *crtc = conn->crtc;
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if ((state->base->committed & WLR_OUTPUT_STATE_BUFFER) && !state->modeset) {
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struct wlr_drm_fb *pending_fb = state->primary_fb;
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struct wlr_drm_fb *prev_fb = crtc->primary->queued_fb;
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if (!prev_fb) {
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prev_fb = crtc->primary->current_fb;
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}
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/* Legacy is only guaranteed to be able to display a FB if it's been
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* allocated the same way as the previous one. */
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if (prev_fb != NULL && !legacy_fb_props_match(prev_fb, pending_fb)) {
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wlr_drm_conn_log(conn, WLR_DEBUG,
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"Cannot change scan-out buffer parameters with legacy KMS API");
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return false;
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}
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}
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return true;
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}
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static bool legacy_crtc_commit(struct wlr_drm_connector *conn,
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struct wlr_drm_connector_state *state,
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struct wlr_drm_page_flip *page_flip, uint32_t flags, bool test_only) {
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if (!legacy_crtc_test(conn, state)) {
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return false;
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}
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if (test_only) {
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return true;
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}
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struct wlr_drm_backend *drm = conn->backend;
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struct wlr_output *output = &conn->output;
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struct wlr_drm_crtc *crtc = conn->crtc;
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struct wlr_drm_plane *cursor = crtc->cursor;
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uint32_t fb_id = 0;
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if (state->active) {
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if (state->primary_fb == NULL) {
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wlr_log(WLR_ERROR, "%s: failed to acquire primary FB",
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conn->output.name);
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return false;
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}
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fb_id = state->primary_fb->id;
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}
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if (state->modeset) {
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uint32_t *conns = NULL;
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size_t conns_len = 0;
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drmModeModeInfo *mode = NULL;
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if (state->active) {
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conns = &conn->id;
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conns_len = 1;
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mode = (drmModeModeInfo *)&state->mode;
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}
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uint32_t dpms = state->active ? DRM_MODE_DPMS_ON : DRM_MODE_DPMS_OFF;
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if (drmModeConnectorSetProperty(drm->fd, conn->id, conn->props.dpms,
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dpms) != 0) {
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wlr_drm_conn_log_errno(conn, WLR_ERROR,
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"Failed to set DPMS property");
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return false;
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}
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if (drmModeSetCrtc(drm->fd, crtc->id, fb_id, 0, 0,
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conns, conns_len, mode)) {
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wlr_drm_conn_log_errno(conn, WLR_ERROR, "Failed to set CRTC");
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return false;
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}
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}
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if (state->base->committed & WLR_OUTPUT_STATE_GAMMA_LUT) {
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if (!drm_legacy_crtc_set_gamma(drm, crtc,
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state->base->gamma_lut_size, state->base->gamma_lut)) {
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return false;
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}
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}
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if (state->base->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) {
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if (!drm_connector_supports_vrr(conn)) {
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return false;
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}
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if (drmModeObjectSetProperty(drm->fd, crtc->id, DRM_MODE_OBJECT_CRTC,
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crtc->props.vrr_enabled,
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state->base->adaptive_sync_enabled) != 0) {
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wlr_drm_conn_log_errno(conn, WLR_ERROR,
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"drmModeObjectSetProperty(VRR_ENABLED) failed");
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return false;
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}
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output->adaptive_sync_status = state->base->adaptive_sync_enabled ?
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WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED :
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WLR_OUTPUT_ADAPTIVE_SYNC_DISABLED;
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wlr_drm_conn_log(conn, WLR_DEBUG, "VRR %s",
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state->base->adaptive_sync_enabled ? "enabled" : "disabled");
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}
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if (cursor != NULL && drm_connector_is_cursor_visible(conn)) {
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struct wlr_drm_fb *cursor_fb = state->cursor_fb;
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if (cursor_fb == NULL) {
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wlr_drm_conn_log(conn, WLR_DEBUG, "Failed to acquire cursor FB");
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return false;
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}
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drmModeFB *drm_fb = drmModeGetFB(drm->fd, cursor_fb->id);
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if (drm_fb == NULL) {
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wlr_drm_conn_log_errno(conn, WLR_DEBUG, "Failed to get cursor "
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"BO handle: drmModeGetFB failed");
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return false;
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}
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uint32_t cursor_handle = drm_fb->handle;
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uint32_t cursor_width = drm_fb->width;
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uint32_t cursor_height = drm_fb->height;
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drmModeFreeFB(drm_fb);
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int ret = drmModeSetCursor(drm->fd, crtc->id, cursor_handle,
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cursor_width, cursor_height);
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int set_cursor_errno = errno;
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if (drmCloseBufferHandle(drm->fd, cursor_handle) != 0) {
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wlr_log_errno(WLR_ERROR, "drmCloseBufferHandle failed");
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}
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if (ret != 0) {
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wlr_drm_conn_log(conn, WLR_DEBUG, "drmModeSetCursor failed: %s",
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strerror(set_cursor_errno));
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return false;
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}
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if (drmModeMoveCursor(drm->fd,
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crtc->id, conn->cursor_x, conn->cursor_y) != 0) {
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wlr_drm_conn_log_errno(conn, WLR_ERROR, "drmModeMoveCursor failed");
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return false;
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}
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} else {
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if (drmModeSetCursor(drm->fd, crtc->id, 0, 0, 0)) {
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wlr_drm_conn_log_errno(conn, WLR_DEBUG, "drmModeSetCursor failed");
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return false;
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}
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}
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if (flags & DRM_MODE_PAGE_FLIP_EVENT) {
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if (drmModePageFlip(drm->fd, crtc->id, fb_id, flags, page_flip)) {
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wlr_drm_conn_log_errno(conn, WLR_ERROR, "drmModePageFlip failed");
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return false;
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}
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}
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return true;
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}
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static void fill_empty_gamma_table(size_t size,
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uint16_t *r, uint16_t *g, uint16_t *b) {
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assert(0xFFFF < UINT64_MAX / (size - 1));
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for (uint32_t i = 0; i < size; ++i) {
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uint16_t val = (uint64_t)0xFFFF * i / (size - 1);
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r[i] = g[i] = b[i] = val;
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}
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}
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bool drm_legacy_crtc_set_gamma(struct wlr_drm_backend *drm,
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struct wlr_drm_crtc *crtc, size_t size, uint16_t *lut) {
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uint16_t *linear_lut = NULL;
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if (size == 0) {
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// The legacy interface doesn't offer a way to reset the gamma LUT
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size = drm_crtc_get_gamma_lut_size(drm, crtc);
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if (size == 0) {
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return false;
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}
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linear_lut = malloc(3 * size * sizeof(uint16_t));
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if (linear_lut == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return false;
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}
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fill_empty_gamma_table(size, linear_lut, linear_lut + size,
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linear_lut + 2 * size);
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lut = linear_lut;
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}
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uint16_t *r = lut, *g = lut + size, *b = lut + 2 * size;
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if (drmModeCrtcSetGamma(drm->fd, crtc->id, size, r, g, b) != 0) {
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wlr_log_errno(WLR_ERROR, "Failed to set gamma LUT on CRTC %"PRIu32,
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crtc->id);
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free(linear_lut);
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return false;
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}
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free(linear_lut);
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return true;
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}
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static bool legacy_reset(struct wlr_drm_backend *drm) {
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bool ok = true;
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for (size_t i = 0; i < drm->num_crtcs; i++) {
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struct wlr_drm_crtc *crtc = &drm->crtcs[i];
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if (drmModeSetCrtc(drm->fd, crtc->id, 0, 0, 0, NULL, 0, NULL) != 0) {
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wlr_log_errno(WLR_ERROR, "Failed to disable CRTC %"PRIu32,
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crtc->id);
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ok = false;
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}
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}
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return ok;
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}
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const struct wlr_drm_interface legacy_iface = {
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.crtc_commit = legacy_crtc_commit,
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.reset = legacy_reset,
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};
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