+const struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc)
+{
+ struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+ return &omap_crtc->timings;
+}
+
+enum omap_channel omap_crtc_channel(struct drm_crtc *crtc)
+{
+ struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+ return omap_crtc->channel;
+}
+
+static void omap_crtc_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
+{
+ struct omap_crtc *omap_crtc =
+ container_of(irq, struct omap_crtc, error_irq);
+ struct drm_crtc *crtc = &omap_crtc->base;
+ DRM_ERROR("%s: errors: %08x\n", omap_crtc->name, irqstatus);
+ /* avoid getting in a flood, unregister the irq until next vblank */
+ omap_irq_unregister(crtc->dev, &omap_crtc->error_irq);
+}
+
+static void omap_crtc_apply_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
+{
+ struct omap_crtc *omap_crtc =
+ container_of(irq, struct omap_crtc, apply_irq);
+ struct drm_crtc *crtc = &omap_crtc->base;
+
+ if (!omap_crtc->error_irq.registered)
+ omap_irq_register(crtc->dev, &omap_crtc->error_irq);
+
+ if (!dispc_mgr_go_busy(omap_crtc->channel)) {
+ struct omap_drm_private *priv =
+ crtc->dev->dev_private;
+ DBG("%s: apply done", omap_crtc->name);
+ omap_irq_unregister(crtc->dev, &omap_crtc->apply_irq);
+ queue_work(priv->wq, &omap_crtc->apply_work);
+ }
+}
+
+static void apply_worker(struct work_struct *work)
+{
+ struct omap_crtc *omap_crtc =
+ container_of(work, struct omap_crtc, apply_work);
+ struct drm_crtc *crtc = &omap_crtc->base;
+ struct drm_device *dev = crtc->dev;
+ struct omap_drm_apply *apply, *n;
+ bool need_apply;
+
+ /*
+ * Synchronize everything on mode_config.mutex, to keep
+ * the callbacks and list modification all serialized
+ * with respect to modesetting ioctls from userspace.
+ */
+ mutex_lock(&dev->mode_config.mutex);
+ dispc_runtime_get();
+
+ /*
+ * If we are still pending a previous update, wait.. when the
+ * pending update completes, we get kicked again.
+ */
+ if (omap_crtc->apply_irq.registered)
+ goto out;
+
+ /* finish up previous apply's: */
+ list_for_each_entry_safe(apply, n,
+ &omap_crtc->pending_applies, pending_node) {
+ apply->post_apply(apply);
+ list_del(&apply->pending_node);
+ }
+
+ need_apply = !list_empty(&omap_crtc->queued_applies);
+
+ /* then handle the next round of of queued apply's: */
+ list_for_each_entry_safe(apply, n,
+ &omap_crtc->queued_applies, queued_node) {
+ apply->pre_apply(apply);
+ list_del(&apply->queued_node);
+ apply->queued = false;
+ list_add_tail(&apply->pending_node,
+ &omap_crtc->pending_applies);
+ }
+
+ if (need_apply) {
+ enum omap_channel channel = omap_crtc->channel;
+
+ DBG("%s: GO", omap_crtc->name);
+
+ if (dispc_mgr_is_enabled(channel)) {
+ omap_irq_register(dev, &omap_crtc->apply_irq);
+ dispc_mgr_go(channel);
+ } else {
+ struct omap_drm_private *priv = dev->dev_private;
+ queue_work(priv->wq, &omap_crtc->apply_work);
+ }
+ }
+
+out:
+ dispc_runtime_put();
+ mutex_unlock(&dev->mode_config.mutex);
+}
+
+int omap_crtc_apply(struct drm_crtc *crtc,
+ struct omap_drm_apply *apply)
+{
+ struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+
+ WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
+
+ /* no need to queue it again if it is already queued: */
+ if (apply->queued)
+ return 0;
+
+ apply->queued = true;
+ list_add_tail(&apply->queued_node, &omap_crtc->queued_applies);
+
+ /*
+ * If there are no currently pending updates, then go ahead and
+ * kick the worker immediately, otherwise it will run again when
+ * the current update finishes.
+ */
+ if (list_empty(&omap_crtc->pending_applies)) {
+ struct omap_drm_private *priv = crtc->dev->dev_private;
+ queue_work(priv->wq, &omap_crtc->apply_work);
+ }
+
+ return 0;
+}
+
+/* called only from apply */
+static void set_enabled(struct drm_crtc *crtc, bool enable)
+{
+ struct drm_device *dev = crtc->dev;
+ struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+ enum omap_channel channel = omap_crtc->channel;
+ struct omap_irq_wait *wait = NULL;
+
+ if (dispc_mgr_is_enabled(channel) == enable)
+ return;
+
+ /* ignore sync-lost irqs during enable/disable */
+ omap_irq_unregister(crtc->dev, &omap_crtc->error_irq);
+
+ if (dispc_mgr_get_framedone_irq(channel)) {
+ if (!enable) {
+ wait = omap_irq_wait_init(dev,
+ dispc_mgr_get_framedone_irq(channel), 1);
+ }
+ } else {
+ /*
+ * When we disable digit output, we need to wait until fields
+ * are done. Otherwise the DSS is still working, and turning
+ * off the clocks prevents DSS from going to OFF mode. And when
+ * enabling, we need to wait for the extra sync losts
+ */
+ wait = omap_irq_wait_init(dev,
+ dispc_mgr_get_vsync_irq(channel), 2);
+ }
+
+ dispc_mgr_enable(channel, enable);
+
+ if (wait) {
+ int ret = omap_irq_wait(dev, wait, msecs_to_jiffies(100));
+ if (ret) {
+ dev_err(dev->dev, "%s: timeout waiting for %s\n",
+ omap_crtc->name, enable ? "enable" : "disable");
+ }
+ }
+
+ omap_irq_register(crtc->dev, &omap_crtc->error_irq);
+}
+
+static void omap_crtc_pre_apply(struct omap_drm_apply *apply)
+{
+ struct omap_crtc *omap_crtc =
+ container_of(apply, struct omap_crtc, apply);
+ struct drm_crtc *crtc = &omap_crtc->base;
+ struct drm_encoder *encoder = NULL;
+
+ DBG("%s: enabled=%d, full=%d", omap_crtc->name,
+ omap_crtc->enabled, omap_crtc->full_update);
+
+ if (omap_crtc->full_update) {
+ struct omap_drm_private *priv = crtc->dev->dev_private;
+ int i;
+ for (i = 0; i < priv->num_encoders; i++) {
+ if (priv->encoders[i]->crtc == crtc) {
+ encoder = priv->encoders[i];
+ break;
+ }
+ }
+ }
+
+ if (!omap_crtc->enabled) {
+ set_enabled(&omap_crtc->base, false);
+ if (encoder)
+ omap_encoder_set_enabled(encoder, false);
+ } else {
+ if (encoder) {
+ omap_encoder_set_enabled(encoder, false);
+ omap_encoder_update(encoder, &omap_crtc->mgr,
+ &omap_crtc->timings);
+ omap_encoder_set_enabled(encoder, true);
+ omap_crtc->full_update = false;
+ }
+
+ dispc_mgr_setup(omap_crtc->channel, &omap_crtc->info);
+ dispc_mgr_set_timings(omap_crtc->channel,
+ &omap_crtc->timings);
+ set_enabled(&omap_crtc->base, true);
+ }
+
+ omap_crtc->full_update = false;
+}
+
+static void omap_crtc_post_apply(struct omap_drm_apply *apply)
+{
+ /* nothing needed for post-apply */
+}
+
+static const char *channel_names[] = {
+ [OMAP_DSS_CHANNEL_LCD] = "lcd",
+ [OMAP_DSS_CHANNEL_DIGIT] = "tv",
+ [OMAP_DSS_CHANNEL_LCD2] = "lcd2",
+};
+