static int set_property_atomic(struct drm_mode_object *obj,
struct drm_property *prop,
uint64_t prop_value)
{
struct drm_device *dev = prop->dev;
struct drm_atomic_state *state;
struct drm_modeset_acquire_ctx ctx;
int ret;
drm_modeset_acquire_init(&ctx, 0);
state = drm_atomic_state_alloc(dev);
if (!state)
return -ENOMEM;
state->acquire_ctx = &ctx;
retry:
if (prop == state->dev->mode_config.dpms_property) {
if (obj->type != DRM_MODE_OBJECT_CONNECTOR) {
ret = -EINVAL;
goto out;
}
ret = drm_atomic_connector_commit_dpms(state,
obj_to_connector(obj),
prop_value);
} else {
ret = drm_atomic_set_property(state, obj, prop, prop_value);
if (ret)
goto out;
ret = drm_atomic_commit(state);
}
out:
if (ret == -EDEADLK) {
drm_atomic_state_clear(state);
drm_modeset_backoff(&ctx);
goto retry;
}
drm_atomic_state_put(state);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
return ret;
}
/* The (potentially) asynchronous part of the commit. At this point
* nothing can fail short of armageddon.
*/
static void complete_commit(struct msm_commit *c, bool async)
{
struct drm_atomic_state *state = c->state;
struct drm_device *dev = state->dev;
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
drm_atomic_helper_wait_for_fences(dev, state, false);
kms->funcs->prepare_commit(kms, state);
drm_atomic_helper_commit_modeset_disables(dev, state);
drm_atomic_helper_commit_planes(dev, state, 0);
drm_atomic_helper_commit_modeset_enables(dev, state);
/* NOTE: _wait_for_vblanks() only waits for vblank on
* enabled CRTCs. So we end up faulting when disabling
* due to (potentially) unref'ing the outgoing fb's
* before the vblank when the disable has latched.
*
* But if it did wait on disabled (or newly disabled)
* CRTCs, that would be racy (ie. we could have missed
* the irq. We need some way to poll for pipe shut
* down. Or just live with occasionally hitting the
* timeout in the CRTC disable path (which really should
* not be critical path)
*/
msm_atomic_wait_for_commit_done(dev, state);
drm_atomic_helper_cleanup_planes(dev, state);
kms->funcs->complete_commit(kms, state);
drm_atomic_state_put(state);
commit_destroy(c);
}
static void hsw_trans_edp_pipe_A_crc_wa(struct drm_i915_private *dev_priv,
bool enable)
{
struct drm_device *dev = &dev_priv->drm;
struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_A);
struct intel_crtc_state *pipe_config;
struct drm_atomic_state *state;
int ret = 0;
drm_modeset_lock_all(dev);
state = drm_atomic_state_alloc(dev);
if (!state) {
ret = -ENOMEM;
goto unlock;
}
state->acquire_ctx = drm_modeset_legacy_acquire_ctx(&crtc->base);
pipe_config = intel_atomic_get_crtc_state(state, crtc);
if (IS_ERR(pipe_config)) {
ret = PTR_ERR(pipe_config);
goto put_state;
}
pipe_config->pch_pfit.force_thru = enable;
if (pipe_config->cpu_transcoder == TRANSCODER_EDP &&
pipe_config->pch_pfit.enabled != enable)
pipe_config->base.connectors_changed = true;
ret = drm_atomic_commit(state);
put_state:
drm_atomic_state_put(state);
unlock:
WARN(ret, "Toggling workaround to %i returns %i\n", enable, ret);
drm_modeset_unlock_all(dev);
}
static void hsw_pipe_A_crc_wa(struct drm_i915_private *dev_priv,
bool enable)
{
struct drm_device *dev = &dev_priv->drm;
struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_A);
struct intel_crtc_state *pipe_config;
struct drm_atomic_state *state;
struct drm_modeset_acquire_ctx ctx;
int ret = 0;
drm_modeset_acquire_init(&ctx, 0);
state = drm_atomic_state_alloc(dev);
if (!state) {
ret = -ENOMEM;
goto unlock;
}
state->acquire_ctx = &ctx;
retry:
pipe_config = intel_atomic_get_crtc_state(state, crtc);
if (IS_ERR(pipe_config)) {
ret = PTR_ERR(pipe_config);
goto put_state;
}
if (HAS_IPS(dev_priv)) {
/*
* When IPS gets enabled, the pipe CRC changes. Since IPS gets
* enabled and disabled dynamically based on package C states,
* user space can't make reliable use of the CRCs, so let's just
* completely disable it.
*/
pipe_config->ips_force_disable = enable;
if (pipe_config->ips_enabled == enable)
pipe_config->base.connectors_changed = true;
}
if (IS_HASWELL(dev_priv)) {
pipe_config->pch_pfit.force_thru = enable;
if (pipe_config->cpu_transcoder == TRANSCODER_EDP &&
pipe_config->pch_pfit.enabled != enable)
pipe_config->base.connectors_changed = true;
}
ret = drm_atomic_commit(state);
put_state:
if (ret == -EDEADLK) {
drm_atomic_state_clear(state);
drm_modeset_backoff(&ctx);
goto retry;
}
drm_atomic_state_put(state);
unlock:
WARN(ret, "Toggling workaround to %i returns %i\n", enable, ret);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
}
