mirror of https://gitee.com/openkylin/linux.git
drm/i915/fbdev: Move intel_fb_initial_config() to fbdev helper
It is generic code and having it in the helper will let other drivers benefit from it. One change was necessary assuming this to be true: INTEL_INFO(dev_priv)->num_pipes == dev->mode_config.num_crtc Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: intel-gfx@lists.freedesktop.org Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190407165243.54043-4-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes
parent
e33898a207
commit
09ded8af57
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@ -2559,6 +2559,194 @@ static void drm_setup_crtc_rotation(struct drm_fb_helper *fb_helper,
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fb_helper->sw_rotations |= DRM_MODE_ROTATE_0;
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}
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static struct drm_fb_helper_crtc *
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drm_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc)
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{
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int i;
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for (i = 0; i < fb_helper->crtc_count; i++)
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if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
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return &fb_helper->crtc_info[i];
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return NULL;
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}
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/* Try to read the BIOS display configuration and use it for the initial config */
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static bool drm_fb_helper_firmware_config(struct drm_fb_helper *fb_helper,
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struct drm_fb_helper_crtc **crtcs,
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struct drm_display_mode **modes,
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struct drm_fb_offset *offsets,
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bool *enabled, int width, int height)
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{
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struct drm_device *dev = fb_helper->dev;
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unsigned int count = min(fb_helper->connector_count, BITS_PER_LONG);
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unsigned long conn_configured, conn_seq;
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int i, j;
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bool *save_enabled;
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bool fallback = true, ret = true;
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int num_connectors_enabled = 0;
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int num_connectors_detected = 0;
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struct drm_modeset_acquire_ctx ctx;
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save_enabled = kcalloc(count, sizeof(bool), GFP_KERNEL);
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if (!save_enabled)
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return false;
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drm_modeset_acquire_init(&ctx, 0);
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while (drm_modeset_lock_all_ctx(dev, &ctx) != 0)
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drm_modeset_backoff(&ctx);
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memcpy(save_enabled, enabled, count);
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conn_seq = GENMASK(count - 1, 0);
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conn_configured = 0;
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retry:
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for (i = 0; i < count; i++) {
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struct drm_fb_helper_connector *fb_conn;
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struct drm_connector *connector;
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struct drm_encoder *encoder;
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struct drm_fb_helper_crtc *new_crtc;
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fb_conn = fb_helper->connector_info[i];
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connector = fb_conn->connector;
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if (conn_configured & BIT(i))
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continue;
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/* First pass, only consider tiled connectors */
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if (conn_seq == GENMASK(count - 1, 0) && !connector->has_tile)
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continue;
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if (connector->status == connector_status_connected)
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num_connectors_detected++;
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if (!enabled[i]) {
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DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
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connector->name);
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conn_configured |= BIT(i);
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continue;
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}
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if (connector->force == DRM_FORCE_OFF) {
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DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
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connector->name);
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enabled[i] = false;
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continue;
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}
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encoder = connector->state->best_encoder;
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if (!encoder || WARN_ON(!connector->state->crtc)) {
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if (connector->force > DRM_FORCE_OFF)
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goto bail;
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DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
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connector->name);
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enabled[i] = false;
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conn_configured |= BIT(i);
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continue;
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}
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num_connectors_enabled++;
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new_crtc = drm_fb_helper_crtc(fb_helper, connector->state->crtc);
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/*
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* Make sure we're not trying to drive multiple connectors
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* with a single CRTC, since our cloning support may not
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* match the BIOS.
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*/
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for (j = 0; j < count; j++) {
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if (crtcs[j] == new_crtc) {
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DRM_DEBUG_KMS("fallback: cloned configuration\n");
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goto bail;
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}
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}
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DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
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connector->name);
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/* go for command line mode first */
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modes[i] = drm_pick_cmdline_mode(fb_conn);
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/* try for preferred next */
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if (!modes[i]) {
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DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
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connector->name, connector->has_tile);
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modes[i] = drm_has_preferred_mode(fb_conn, width,
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height);
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}
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/* No preferred mode marked by the EDID? Are there any modes? */
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if (!modes[i] && !list_empty(&connector->modes)) {
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DRM_DEBUG_KMS("using first mode listed on connector %s\n",
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connector->name);
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modes[i] = list_first_entry(&connector->modes,
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struct drm_display_mode,
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head);
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}
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/* last resort: use current mode */
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if (!modes[i]) {
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/*
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* IMPORTANT: We want to use the adjusted mode (i.e.
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* after the panel fitter upscaling) as the initial
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* config, not the input mode, which is what crtc->mode
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* usually contains. But since our current
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* code puts a mode derived from the post-pfit timings
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* into crtc->mode this works out correctly.
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*
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* This is crtc->mode and not crtc->state->mode for the
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* fastboot check to work correctly.
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*/
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DRM_DEBUG_KMS("looking for current mode on connector %s\n",
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connector->name);
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modes[i] = &connector->state->crtc->mode;
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}
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crtcs[i] = new_crtc;
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DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n",
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connector->name,
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connector->state->crtc->base.id,
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connector->state->crtc->name,
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modes[i]->hdisplay, modes[i]->vdisplay,
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modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" : "");
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fallback = false;
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conn_configured |= BIT(i);
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}
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if (conn_configured != conn_seq) { /* repeat until no more are found */
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conn_seq = conn_configured;
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goto retry;
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}
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/*
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* If the BIOS didn't enable everything it could, fall back to have the
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* same user experiencing of lighting up as much as possible like the
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* fbdev helper library.
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*/
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if (num_connectors_enabled != num_connectors_detected &&
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num_connectors_enabled < dev->mode_config.num_crtc) {
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DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
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DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,
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num_connectors_detected);
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fallback = true;
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}
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if (fallback) {
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bail:
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DRM_DEBUG_KMS("Not using firmware configuration\n");
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memcpy(enabled, save_enabled, count);
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ret = false;
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}
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drm_modeset_drop_locks(&ctx);
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drm_modeset_acquire_fini(&ctx);
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kfree(save_enabled);
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return ret;
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}
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static void drm_setup_crtcs(struct drm_fb_helper *fb_helper,
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u32 width, u32 height)
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{
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@ -2591,10 +2779,8 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper,
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DRM_DEBUG_KMS("No connectors reported connected with modes\n");
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drm_enable_connectors(fb_helper, enabled);
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if (!(fb_helper->funcs->initial_config &&
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fb_helper->funcs->initial_config(fb_helper, crtcs, modes,
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offsets,
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enabled, width, height))) {
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if (!drm_fb_helper_firmware_config(fb_helper, crtcs, modes, offsets,
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enabled, width, height)) {
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memset(modes, 0, fb_helper->connector_count*sizeof(modes[0]));
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memset(crtcs, 0, fb_helper->connector_count*sizeof(crtcs[0]));
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memset(offsets, 0, fb_helper->connector_count*sizeof(offsets[0]));
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@ -284,225 +284,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
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return ret;
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}
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static struct drm_fb_helper_crtc *
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intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc)
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{
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int i;
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for (i = 0; i < fb_helper->crtc_count; i++)
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if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
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return &fb_helper->crtc_info[i];
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return NULL;
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}
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/*
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* Try to read the BIOS display configuration and use it for the initial
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* fb configuration.
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*
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* The BIOS or boot loader will generally create an initial display
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* configuration for us that includes some set of active pipes and displays.
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* This routine tries to figure out which pipes and connectors are active
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* and stuffs them into the crtcs and modes array given to us by the
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* drm_fb_helper code.
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*
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* The overall sequence is:
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* intel_fbdev_init - from driver load
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* intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
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* drm_fb_helper_init - build fb helper structs
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* drm_fb_helper_single_add_all_connectors - more fb helper structs
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* intel_fbdev_initial_config - apply the config
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* drm_fb_helper_initial_config - call ->probe then register_framebuffer()
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* drm_setup_crtcs - build crtc config for fbdev
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* intel_fb_initial_config - find active connectors etc
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* drm_fb_helper_single_fb_probe - set up fbdev
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* intelfb_create - re-use or alloc fb, build out fbdev structs
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*
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* Note that we don't make special consideration whether we could actually
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* switch to the selected modes without a full modeset. E.g. when the display
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* is in VGA mode we need to recalculate watermarks and set a new high-res
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* framebuffer anyway.
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*/
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static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
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struct drm_fb_helper_crtc **crtcs,
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struct drm_display_mode **modes,
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struct drm_fb_offset *offsets,
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bool *enabled, int width, int height)
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{
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struct drm_i915_private *dev_priv = to_i915(fb_helper->dev);
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unsigned int count = min(fb_helper->connector_count, BITS_PER_LONG);
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unsigned long conn_configured, conn_seq;
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int i, j;
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bool *save_enabled;
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bool fallback = true, ret = true;
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int num_connectors_enabled = 0;
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int num_connectors_detected = 0;
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struct drm_modeset_acquire_ctx ctx;
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save_enabled = kcalloc(count, sizeof(bool), GFP_KERNEL);
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if (!save_enabled)
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return false;
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drm_modeset_acquire_init(&ctx, 0);
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while (drm_modeset_lock_all_ctx(fb_helper->dev, &ctx) != 0)
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drm_modeset_backoff(&ctx);
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memcpy(save_enabled, enabled, count);
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conn_seq = GENMASK(count - 1, 0);
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conn_configured = 0;
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retry:
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for (i = 0; i < count; i++) {
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struct drm_fb_helper_connector *fb_conn;
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struct drm_connector *connector;
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struct drm_encoder *encoder;
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struct drm_fb_helper_crtc *new_crtc;
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fb_conn = fb_helper->connector_info[i];
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connector = fb_conn->connector;
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if (conn_configured & BIT(i))
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continue;
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/* First pass, only consider tiled connectors */
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if (conn_seq == GENMASK(count - 1, 0) && !connector->has_tile)
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continue;
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if (connector->status == connector_status_connected)
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num_connectors_detected++;
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if (!enabled[i]) {
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DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
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connector->name);
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conn_configured |= BIT(i);
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continue;
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}
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if (connector->force == DRM_FORCE_OFF) {
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DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
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connector->name);
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enabled[i] = false;
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continue;
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}
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encoder = connector->state->best_encoder;
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if (!encoder || WARN_ON(!connector->state->crtc)) {
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if (connector->force > DRM_FORCE_OFF)
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goto bail;
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DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
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connector->name);
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enabled[i] = false;
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conn_configured |= BIT(i);
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continue;
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}
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num_connectors_enabled++;
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new_crtc = intel_fb_helper_crtc(fb_helper,
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connector->state->crtc);
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/*
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* Make sure we're not trying to drive multiple connectors
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* with a single CRTC, since our cloning support may not
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* match the BIOS.
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*/
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for (j = 0; j < count; j++) {
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if (crtcs[j] == new_crtc) {
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DRM_DEBUG_KMS("fallback: cloned configuration\n");
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goto bail;
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}
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}
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DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
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connector->name);
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/* go for command line mode first */
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modes[i] = drm_pick_cmdline_mode(fb_conn);
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/* try for preferred next */
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if (!modes[i]) {
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DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
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connector->name, connector->has_tile);
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modes[i] = drm_has_preferred_mode(fb_conn, width,
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height);
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}
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/* No preferred mode marked by the EDID? Are there any modes? */
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if (!modes[i] && !list_empty(&connector->modes)) {
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DRM_DEBUG_KMS("using first mode listed on connector %s\n",
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connector->name);
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modes[i] = list_first_entry(&connector->modes,
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struct drm_display_mode,
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head);
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}
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/* last resort: use current mode */
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if (!modes[i]) {
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/*
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* IMPORTANT: We want to use the adjusted mode (i.e.
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* after the panel fitter upscaling) as the initial
|
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* config, not the input mode, which is what crtc->mode
|
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* usually contains. But since our current
|
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* code puts a mode derived from the post-pfit timings
|
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* into crtc->mode this works out correctly.
|
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*
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* This is crtc->mode and not crtc->state->mode for the
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* fastboot check to work correctly. crtc_state->mode has
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* I915_MODE_FLAG_INHERITED, which we clear to force check
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* state.
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*/
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DRM_DEBUG_KMS("looking for current mode on connector %s\n",
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connector->name);
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modes[i] = &connector->state->crtc->mode;
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}
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crtcs[i] = new_crtc;
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DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n",
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connector->name,
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connector->state->crtc->base.id,
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connector->state->crtc->name,
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modes[i]->hdisplay, modes[i]->vdisplay,
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modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");
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fallback = false;
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conn_configured |= BIT(i);
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}
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if (conn_configured != conn_seq) { /* repeat until no more are found */
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conn_seq = conn_configured;
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goto retry;
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}
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/*
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* If the BIOS didn't enable everything it could, fall back to have the
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* same user experiencing of lighting up as much as possible like the
|
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* fbdev helper library.
|
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*/
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if (num_connectors_enabled != num_connectors_detected &&
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num_connectors_enabled < INTEL_INFO(dev_priv)->num_pipes) {
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DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
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DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,
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num_connectors_detected);
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fallback = true;
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}
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if (fallback) {
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bail:
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DRM_DEBUG_KMS("Not using firmware configuration\n");
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memcpy(enabled, save_enabled, count);
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ret = false;
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}
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drm_modeset_drop_locks(&ctx);
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drm_modeset_acquire_fini(&ctx);
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kfree(save_enabled);
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return ret;
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}
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static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
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.initial_config = intel_fb_initial_config,
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.fb_probe = intelfb_create,
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};
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|
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@ -102,29 +102,6 @@ struct drm_fb_helper_funcs {
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*/
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int (*fb_probe)(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes);
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/**
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* @initial_config:
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*
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* Driver callback to setup an initial fbdev display configuration.
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* Drivers can use this callback to tell the fbdev emulation what the
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* preferred initial configuration is. This is useful to implement
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* smooth booting where the fbdev (and subsequently all userspace) never
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* changes the mode, but always inherits the existing configuration.
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*
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* This callback is optional.
|
||||
*
|
||||
* RETURNS:
|
||||
*
|
||||
* The driver should return true if a suitable initial configuration has
|
||||
* been filled out and false when the fbdev helper should fall back to
|
||||
* the default probing logic.
|
||||
*/
|
||||
bool (*initial_config)(struct drm_fb_helper *fb_helper,
|
||||
struct drm_fb_helper_crtc **crtcs,
|
||||
struct drm_display_mode **modes,
|
||||
struct drm_fb_offset *offsets,
|
||||
bool *enabled, int width, int height);
|
||||
};
|
||||
|
||||
struct drm_fb_helper_connector {
|
||||
|
|
|
|||
Loading…
Reference in New Issue