Atomic modesetting: now with modesetting support.
v2: Moved drm_atomic_set_mode_prop_for_crtc from previous patch; removed state->active fiddling, documented return code. Changed property type to DRM_MODE_PROP_BLOB.
Signed-off-by: Daniel Stone daniels@collabora.com Tested-by: Sean Paul seanpaul@chromium.org --- drivers/gpu/drm/drm_atomic.c | 57 +++++++++++++++++++++++++++++++++++++++++++- drivers/gpu/drm/drm_crtc.c | 8 +++++++ include/drm/drm_atomic.h | 3 +++ include/drm/drm_crtc.h | 1 + 4 files changed, 68 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 327ccc7..c7e59b0 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -339,6 +339,51 @@ int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
/** + * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC + * @state: the CRTC whose incoming state to update + * @blob: pointer to blob property to use for mode + * + * Set a mode (originating from a blob property) on the desired CRTC state. + * This function will take a reference on the blob property for the CRTC state, + * and release the reference held on the state's existing mode property, if any + * was set. + * + * RETURNS: + * Zero on success, error code on failure. Cannot return -EDEADLK. + */ +int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, + struct drm_property_blob *blob) +{ + if (blob == state->mode_blob) + return 0; + + if (state->mode_blob) + drm_property_unreference_blob(state->mode_blob); + state->mode_blob = NULL; + + if (blob) { + if (blob->length != sizeof(struct drm_mode_modeinfo) || + drm_mode_convert_umode(&state->mode, + (const struct drm_mode_modeinfo *) + blob->data)) + return -EINVAL; + + state->mode_blob = drm_property_reference_blob(blob); + state->enable = true; + DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", + state->mode.name, state); + } else { + memset(&state->mode, 0, sizeof(state->mode)); + state->enable = false; + DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", + state); + } + + return 0; +} +EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); + +/** * drm_atomic_crtc_set_property - set property on CRTC * @crtc: the drm CRTC to set a property on * @state: the state object to update with the new property value @@ -360,10 +405,18 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc, { struct drm_device *dev = crtc->dev; struct drm_mode_config *config = &dev->mode_config; + int ret;
- /* FIXME: Mode prop is missing, which also controls ->enable. */ if (property == config->prop_active) state->active = val; + else if (property == config->prop_mode_id) { + struct drm_property_blob *mode = + drm_property_lookup_blob(dev, val); + ret = drm_atomic_set_mode_prop_for_crtc(state, mode); + if (mode) + drm_property_unreference_blob(mode); + return ret; + } else if (crtc->funcs->atomic_set_property) return crtc->funcs->atomic_set_property(crtc, state, property, val); else @@ -388,6 +441,8 @@ int drm_atomic_crtc_get_property(struct drm_crtc *crtc,
if (property == config->prop_active) *val = state->active; + else if (property == config->prop_mode_id) + *val = (state->mode_blob) ? state->mode_blob->base.id : 0; else if (crtc->funcs->atomic_get_property) return crtc->funcs->atomic_get_property(crtc, state, property, val); else diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 2de6edf..b4b365c 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -688,6 +688,7 @@ int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { drm_object_attach_property(&crtc->base, config->prop_active, 0); + drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); }
return 0; @@ -1454,6 +1455,13 @@ static int drm_mode_create_standard_properties(struct drm_device *dev) return -ENOMEM; dev->mode_config.prop_active = prop;
+ prop = drm_property_create(dev, + DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, + "MODE_ID", 0); + if (!prop) + return -ENOMEM; + dev->mode_config.prop_mode_id = prop; + return 0; }
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 1e8c61f..55f4604 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -113,6 +113,9 @@ int __must_check drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, struct drm_display_mode *mode); int __must_check +drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, + struct drm_property_blob *blob); +int __must_check drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, struct drm_crtc *crtc); void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index c54fa4a..3b4d8a4 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1146,6 +1146,7 @@ struct drm_mode_config { struct drm_property *prop_fb_id; struct drm_property *prop_crtc_id; struct drm_property *prop_active; + struct drm_property *prop_mode_id;
/* DVI-I properties */ struct drm_property *dvi_i_subconnector_property;