sna: Use the existing configuration for initial modes
After checking for user overrides (preferred output modes, rotation and placement), copy the current CRTC configuration from the kernel into the desired modes. This should enable X to start without introducing any extra flicker. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson
parent
362b0dc6a3
commit
8a6a21bff8
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@ -2945,6 +2945,159 @@ static void set_size_range(struct sna *sna)
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xf86CrtcSetSizeRange(sna->scrn, 320, 200, INT16_MAX, INT16_MAX);
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}
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static bool sna_probe_initial_configuration(struct sna *sna)
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{
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ScrnInfoPtr scrn = sna->scrn;
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xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
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const int user_overrides[] = {
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2, 3, 4, 5, 6, /* position */
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11, /* rotate */
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12, /* panning */
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};
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int width, height;
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int i, j;
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/* First scan through all outputs and look for user overrides */
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for (i = 0; i < config->num_output; i++) {
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xf86OutputPtr output = config->output[i];
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DisplayModePtr mode;
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for (j = 0; j < ARRAY_SIZE(user_overrides); j++) {
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if (xf86GetOptValString(output->options, user_overrides[j])) {
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DBG(("%s: user placement [%d] for %s\j",
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__FUNCTION__,
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user_overrides[j],
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output->name));
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return false;
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}
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}
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for (mode = output->probed_modes;
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mode && mode->next != output->probed_modes;
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mode = mode->next) {
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if (mode->type & M_T_USERPREF) {
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DBG(("%s: user mode for %s\n",
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__FUNCTION__,
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output->name));
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return false;
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}
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}
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}
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/* Copy the existing modes on each CRTCs */
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for (i = 0; i < config->num_crtc; i++) {
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xf86CrtcPtr crtc = config->crtc[i];
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struct sna_crtc *sna_crtc = to_sna_crtc(crtc);
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struct drm_mode_crtc mode;
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uint16_t *gamma;
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crtc->enabled = FALSE;
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crtc->desiredMode.status = MODE_NOMODE;
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VG_CLEAR(mode);
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mode.crtc_id = sna_crtc->id;
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if (drmIoctl(sna->kgem.fd, DRM_IOCTL_MODE_GETCRTC, &mode))
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continue;
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if (!mode.mode_valid)
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continue;
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memset(&crtc->desiredMode, 0, sizeof(crtc->desiredMode));
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mode_from_kmode(scrn, &mode.mode, &crtc->desiredMode);
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crtc->desiredRotation = 0;
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crtc->desiredX = mode.x;
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crtc->desiredY = mode.y;
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memset(&crtc->panningTotalArea, 0, sizeof(BoxRec));
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memset(&crtc->panningTrackingArea, 0, sizeof(BoxRec));
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memset(crtc->panningBorder, 0, 4 * sizeof(INT16));
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gamma = malloc(3 * mode.gamma_size * sizeof(uint16_t));
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if (gamma) {
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struct drm_mode_crtc_lut lut;
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lut.crtc_id = mode.crtc_id;
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lut.gamma_size = mode.gamma_size;
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lut.red = (uintptr_t)(gamma);
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lut.green = (uintptr_t)(gamma + mode.gamma_size);
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lut.blue = (uintptr_t)(gamma + 2 * mode.gamma_size);
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if (drmIoctl(sna->kgem.fd, DRM_IOCTL_MODE_GETGAMMA, &lut) == 0) {
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free(crtc->gamma_red);
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crtc->gamma_size = mode.gamma_size;
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crtc->gamma_red = gamma;
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crtc->gamma_green = gamma + mode.gamma_size;
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crtc->gamma_blue = gamma + 2*mode.gamma_size;
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}
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}
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}
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/* Reconstruct outputs pointing to active CRTC */
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for (i = 0; i < config->num_output; i++) {
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xf86OutputPtr output = config->output[i];
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struct sna_output *sna_output = to_sna_output(output);
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struct drm_mode_get_encoder enc;
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Bool disable;
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output->crtc = NULL;
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if (xf86GetOptValBool(output->options,
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8 /* OPTION_DISABLE */,
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&disable) && disable)
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continue;
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VG_CLEAR(enc);
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enc.encoder_id = sna->mode.kmode->encoders[sna_output->encoder_idx];
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if (drmIoctl(sna->kgem.fd, DRM_IOCTL_MODE_GETENCODER, &enc))
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continue;
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if (enc.crtc_id == 0)
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continue;
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for (j = 0; j < config->num_crtc; j++) {
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xf86CrtcPtr crtc = config->crtc[j];
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if (to_sna_crtc(crtc)->id == enc.crtc_id) {
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if (crtc->desiredMode.status == MODE_OK) {
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xf86DrvMsg(scrn->scrnIndex, X_INFO,
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"Output %s using initial mode %s on pipe %d\n",
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output->name,
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crtc->desiredMode.name,
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to_sna_crtc(crtc)->pipe);
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output->crtc = crtc;
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crtc->enabled = TRUE;
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}
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break;
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}
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}
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}
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width = height = 0;
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for (i = 0; i < config->num_crtc; i++) {
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xf86CrtcPtr crtc = config->crtc[i];
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int w, h;
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if (!crtc->enabled)
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continue;
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w = crtc->desiredX + crtc->desiredMode.HDisplay;
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if (w > width)
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width = w;
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h = crtc->desiredY + crtc->desiredMode.VDisplay;
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if (h > height)
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height = h;
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}
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scrn->display->frameX0 = 0;
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scrn->display->frameY0 = 0;
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scrn->display->virtualX = width;
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scrn->display->virtualY = height;
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scrn->virtualX = width;
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scrn->virtualY = height;
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xf86SetScrnInfoModes(sna->scrn);
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return true;
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}
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bool sna_mode_pre_init(ScrnInfoPtr scrn, struct sna *sna)
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{
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struct sna_mode *mode = &sna->mode;
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@ -2975,7 +3128,8 @@ bool sna_mode_pre_init(ScrnInfoPtr scrn, struct sna *sna)
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set_size_range(sna);
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xf86InitialConfiguration(scrn, TRUE);
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if (!sna_probe_initial_configuration(sna))
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xf86InitialConfiguration(scrn, TRUE);
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return scrn->modes != NULL;
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}
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