| /* |
| * Copyright © 2015 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| |
| /** |
| * DOC: atomic modeset support |
| * |
| * The functions here implement the state management and hardware programming |
| * dispatch required by the atomic modeset infrastructure. |
| * See intel_atomic_plane.c for the plane-specific atomic functionality. |
| */ |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_atomic.h> |
| #include <drm/drm_atomic_helper.h> |
| #include <drm/drm_plane_helper.h> |
| #include "intel_drv.h" |
| |
| /** |
| * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property. |
| * @connector: Connector to get the property for. |
| * @state: Connector state to retrieve the property from. |
| * @property: Property to retrieve. |
| * @val: Return value for the property. |
| * |
| * Returns the atomic property value for a digital connector. |
| */ |
| int intel_digital_connector_atomic_get_property(struct drm_connector *connector, |
| const struct drm_connector_state *state, |
| struct drm_property *property, |
| uint64_t *val) |
| { |
| struct drm_device *dev = connector->dev; |
| struct drm_i915_private *dev_priv = to_i915(dev); |
| struct intel_digital_connector_state *intel_conn_state = |
| to_intel_digital_connector_state(state); |
| |
| if (property == dev_priv->force_audio_property) |
| *val = intel_conn_state->force_audio; |
| else if (property == dev_priv->broadcast_rgb_property) |
| *val = intel_conn_state->broadcast_rgb; |
| else { |
| DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n", |
| property->base.id, property->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property. |
| * @connector: Connector to set the property for. |
| * @state: Connector state to set the property on. |
| * @property: Property to set. |
| * @val: New value for the property. |
| * |
| * Sets the atomic property value for a digital connector. |
| */ |
| int intel_digital_connector_atomic_set_property(struct drm_connector *connector, |
| struct drm_connector_state *state, |
| struct drm_property *property, |
| uint64_t val) |
| { |
| struct drm_device *dev = connector->dev; |
| struct drm_i915_private *dev_priv = to_i915(dev); |
| struct intel_digital_connector_state *intel_conn_state = |
| to_intel_digital_connector_state(state); |
| |
| if (property == dev_priv->force_audio_property) { |
| intel_conn_state->force_audio = val; |
| return 0; |
| } |
| |
| if (property == dev_priv->broadcast_rgb_property) { |
| intel_conn_state->broadcast_rgb = val; |
| return 0; |
| } |
| |
| DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n", |
| property->base.id, property->name); |
| return -EINVAL; |
| } |
| |
| int intel_digital_connector_atomic_check(struct drm_connector *conn, |
| struct drm_connector_state *new_state) |
| { |
| struct intel_digital_connector_state *new_conn_state = |
| to_intel_digital_connector_state(new_state); |
| struct drm_connector_state *old_state = |
| drm_atomic_get_old_connector_state(new_state->state, conn); |
| struct intel_digital_connector_state *old_conn_state = |
| to_intel_digital_connector_state(old_state); |
| struct drm_crtc_state *crtc_state; |
| |
| intel_hdcp_atomic_check(conn, old_state, new_state); |
| |
| if (!new_state->crtc) |
| return 0; |
| |
| crtc_state = drm_atomic_get_new_crtc_state(new_state->state, new_state->crtc); |
| |
| /* |
| * These properties are handled by fastset, and might not end |
| * up in a modeset. |
| */ |
| if (new_conn_state->force_audio != old_conn_state->force_audio || |
| new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb || |
| new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio || |
| new_conn_state->base.content_type != old_conn_state->base.content_type || |
| new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode) |
| crtc_state->mode_changed = true; |
| |
| return 0; |
| } |
| |
| /** |
| * intel_digital_connector_duplicate_state - duplicate connector state |
| * @connector: digital connector |
| * |
| * Allocates and returns a copy of the connector state (both common and |
| * digital connector specific) for the specified connector. |
| * |
| * Returns: The newly allocated connector state, or NULL on failure. |
| */ |
| struct drm_connector_state * |
| intel_digital_connector_duplicate_state(struct drm_connector *connector) |
| { |
| struct intel_digital_connector_state *state; |
| |
| state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL); |
| if (!state) |
| return NULL; |
| |
| __drm_atomic_helper_connector_duplicate_state(connector, &state->base); |
| return &state->base; |
| } |
| |
| /** |
| * intel_crtc_duplicate_state - duplicate crtc state |
| * @crtc: drm crtc |
| * |
| * Allocates and returns a copy of the crtc state (both common and |
| * Intel-specific) for the specified crtc. |
| * |
| * Returns: The newly allocated crtc state, or NULL on failure. |
| */ |
| struct drm_crtc_state * |
| intel_crtc_duplicate_state(struct drm_crtc *crtc) |
| { |
| struct intel_crtc_state *crtc_state; |
| |
| crtc_state = kmemdup(crtc->state, sizeof(*crtc_state), GFP_KERNEL); |
| if (!crtc_state) |
| return NULL; |
| |
| __drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->base); |
| |
| crtc_state->update_pipe = false; |
| crtc_state->disable_lp_wm = false; |
| crtc_state->disable_cxsr = false; |
| crtc_state->update_wm_pre = false; |
| crtc_state->update_wm_post = false; |
| crtc_state->fb_changed = false; |
| crtc_state->fifo_changed = false; |
| crtc_state->wm.need_postvbl_update = false; |
| crtc_state->fb_bits = 0; |
| crtc_state->update_planes = 0; |
| |
| return &crtc_state->base; |
| } |
| |
| /** |
| * intel_crtc_destroy_state - destroy crtc state |
| * @crtc: drm crtc |
| * @state: the state to destroy |
| * |
| * Destroys the crtc state (both common and Intel-specific) for the |
| * specified crtc. |
| */ |
| void |
| intel_crtc_destroy_state(struct drm_crtc *crtc, |
| struct drm_crtc_state *state) |
| { |
| drm_atomic_helper_crtc_destroy_state(crtc, state); |
| } |
| |
| static void intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state, |
| int num_scalers_need, struct intel_crtc *intel_crtc, |
| const char *name, int idx, |
| struct intel_plane_state *plane_state, |
| int *scaler_id) |
| { |
| struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev); |
| int j; |
| u32 mode; |
| |
| if (*scaler_id < 0) { |
| /* find a free scaler */ |
| for (j = 0; j < intel_crtc->num_scalers; j++) { |
| if (scaler_state->scalers[j].in_use) |
| continue; |
| |
| *scaler_id = j; |
| scaler_state->scalers[*scaler_id].in_use = 1; |
| break; |
| } |
| } |
| |
| if (WARN(*scaler_id < 0, "Cannot find scaler for %s:%d\n", name, idx)) |
| return; |
| |
| /* set scaler mode */ |
| if (plane_state && plane_state->base.fb && |
| plane_state->base.fb->format->is_yuv && |
| plane_state->base.fb->format->num_planes > 1) { |
| if (IS_GEN9(dev_priv) && |
| !IS_GEMINILAKE(dev_priv)) { |
| mode = SKL_PS_SCALER_MODE_NV12; |
| } else if (icl_is_hdr_plane(to_intel_plane(plane_state->base.plane))) { |
| /* |
| * On gen11+'s HDR planes we only use the scaler for |
| * scaling. They have a dedicated chroma upsampler, so |
| * we don't need the scaler to upsample the UV plane. |
| */ |
| mode = PS_SCALER_MODE_NORMAL; |
| } else { |
| mode = PS_SCALER_MODE_PLANAR; |
| |
| if (plane_state->linked_plane) |
| mode |= PS_PLANE_Y_SEL(plane_state->linked_plane->id); |
| } |
| } else if (INTEL_GEN(dev_priv) > 9 || IS_GEMINILAKE(dev_priv)) { |
| mode = PS_SCALER_MODE_NORMAL; |
| } else if (num_scalers_need == 1 && intel_crtc->num_scalers > 1) { |
| /* |
| * when only 1 scaler is in use on a pipe with 2 scalers |
| * scaler 0 operates in high quality (HQ) mode. |
| * In this case use scaler 0 to take advantage of HQ mode |
| */ |
| scaler_state->scalers[*scaler_id].in_use = 0; |
| *scaler_id = 0; |
| scaler_state->scalers[0].in_use = 1; |
| mode = SKL_PS_SCALER_MODE_HQ; |
| } else { |
| mode = SKL_PS_SCALER_MODE_DYN; |
| } |
| |
| DRM_DEBUG_KMS("Attached scaler id %u.%u to %s:%d\n", |
| intel_crtc->pipe, *scaler_id, name, idx); |
| scaler_state->scalers[*scaler_id].mode = mode; |
| } |
| |
| /** |
| * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests |
| * @dev_priv: i915 device |
| * @intel_crtc: intel crtc |
| * @crtc_state: incoming crtc_state to validate and setup scalers |
| * |
| * This function sets up scalers based on staged scaling requests for |
| * a @crtc and its planes. It is called from crtc level check path. If request |
| * is a supportable request, it attaches scalers to requested planes and crtc. |
| * |
| * This function takes into account the current scaler(s) in use by any planes |
| * not being part of this atomic state |
| * |
| * Returns: |
| * 0 - scalers were setup succesfully |
| * error code - otherwise |
| */ |
| int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv, |
| struct intel_crtc *intel_crtc, |
| struct intel_crtc_state *crtc_state) |
| { |
| struct drm_plane *plane = NULL; |
| struct intel_plane *intel_plane; |
| struct intel_plane_state *plane_state = NULL; |
| struct intel_crtc_scaler_state *scaler_state = |
| &crtc_state->scaler_state; |
| struct drm_atomic_state *drm_state = crtc_state->base.state; |
| struct intel_atomic_state *intel_state = to_intel_atomic_state(drm_state); |
| int num_scalers_need; |
| int i; |
| |
| num_scalers_need = hweight32(scaler_state->scaler_users); |
| |
| /* |
| * High level flow: |
| * - staged scaler requests are already in scaler_state->scaler_users |
| * - check whether staged scaling requests can be supported |
| * - add planes using scalers that aren't in current transaction |
| * - assign scalers to requested users |
| * - as part of plane commit, scalers will be committed |
| * (i.e., either attached or detached) to respective planes in hw |
| * - as part of crtc_commit, scaler will be either attached or detached |
| * to crtc in hw |
| */ |
| |
| /* fail if required scalers > available scalers */ |
| if (num_scalers_need > intel_crtc->num_scalers){ |
| DRM_DEBUG_KMS("Too many scaling requests %d > %d\n", |
| num_scalers_need, intel_crtc->num_scalers); |
| return -EINVAL; |
| } |
| |
| /* walkthrough scaler_users bits and start assigning scalers */ |
| for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) { |
| int *scaler_id; |
| const char *name; |
| int idx; |
| |
| /* skip if scaler not required */ |
| if (!(scaler_state->scaler_users & (1 << i))) |
| continue; |
| |
| if (i == SKL_CRTC_INDEX) { |
| name = "CRTC"; |
| idx = intel_crtc->base.base.id; |
| |
| /* panel fitter case: assign as a crtc scaler */ |
| scaler_id = &scaler_state->scaler_id; |
| } else { |
| name = "PLANE"; |
| |
| /* plane scaler case: assign as a plane scaler */ |
| /* find the plane that set the bit as scaler_user */ |
| plane = drm_state->planes[i].ptr; |
| |
| /* |
| * to enable/disable hq mode, add planes that are using scaler |
| * into this transaction |
| */ |
| if (!plane) { |
| struct drm_plane_state *state; |
| plane = drm_plane_from_index(&dev_priv->drm, i); |
| state = drm_atomic_get_plane_state(drm_state, plane); |
| if (IS_ERR(state)) { |
| DRM_DEBUG_KMS("Failed to add [PLANE:%d] to drm_state\n", |
| plane->base.id); |
| return PTR_ERR(state); |
| } |
| |
| /* |
| * the plane is added after plane checks are run, |
| * but since this plane is unchanged just do the |
| * minimum required validation. |
| */ |
| crtc_state->base.planes_changed = true; |
| } |
| |
| intel_plane = to_intel_plane(plane); |
| idx = plane->base.id; |
| |
| /* plane on different crtc cannot be a scaler user of this crtc */ |
| if (WARN_ON(intel_plane->pipe != intel_crtc->pipe)) |
| continue; |
| |
| plane_state = intel_atomic_get_new_plane_state(intel_state, |
| intel_plane); |
| scaler_id = &plane_state->scaler_id; |
| } |
| |
| intel_atomic_setup_scaler(scaler_state, num_scalers_need, |
| intel_crtc, name, idx, |
| plane_state, scaler_id); |
| } |
| |
| return 0; |
| } |
| |
| struct drm_atomic_state * |
| intel_atomic_state_alloc(struct drm_device *dev) |
| { |
| struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL); |
| |
| if (!state || drm_atomic_state_init(dev, &state->base) < 0) { |
| kfree(state); |
| return NULL; |
| } |
| |
| return &state->base; |
| } |
| |
| void intel_atomic_state_clear(struct drm_atomic_state *s) |
| { |
| struct intel_atomic_state *state = to_intel_atomic_state(s); |
| drm_atomic_state_default_clear(&state->base); |
| state->dpll_set = state->modeset = false; |
| } |