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* Copyright © 2014 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 plane helpers
*
* The functions here are used by the atomic plane helper functions to
* implement legacy plane updates (i.e., drm_plane->update_plane() and
* drm_plane->disable_plane()). This allows plane updates to use the
* atomic state infrastructure and perform plane updates as separate
* prepare/check/commit/cleanup steps.
*/
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_plane_helper.h>
#include "i915_trace.h"
#include "intel_atomic_plane.h"
#include "intel_display_types.h"
#include "intel_pm.h"
#include "intel_sprite.h"
struct intel_plane *intel_plane_alloc(void)
{
struct intel_plane_state *plane_state;
struct intel_plane *plane;
plane = kzalloc(sizeof(*plane), GFP_KERNEL);
if (!plane)
return ERR_PTR(-ENOMEM);
plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL);
if (!plane_state) {
kfree(plane);
return ERR_PTR(-ENOMEM);
}
__drm_atomic_helper_plane_reset(&plane->base, &plane_state->base);
plane_state->scaler_id = -1;
return plane;
}
void intel_plane_free(struct intel_plane *plane)
{
intel_plane_destroy_state(&plane->base, plane->base.state);
kfree(plane);
}
/**
* intel_plane_duplicate_state - duplicate plane state
* @plane: drm plane
*
* Allocates and returns a copy of the plane state (both common and
* Intel-specific) for the specified plane.
*
* Returns: The newly allocated plane state, or NULL on failure.
*/
struct drm_plane_state *
intel_plane_duplicate_state(struct drm_plane *plane)
{
struct drm_plane_state *state;
struct intel_plane_state *intel_state;
intel_state = kmemdup(plane->state, sizeof(*intel_state), GFP_KERNEL);
if (!intel_state)
return NULL;
state = &intel_state->base;
__drm_atomic_helper_plane_duplicate_state(plane, state);
intel_state->vma = NULL;
intel_state->flags = 0;
return state;
}
/**
* intel_plane_destroy_state - destroy plane state
* @plane: drm plane
* @state: state object to destroy
*
* Destroys the plane state (both common and Intel-specific) for the
* specified plane.
*/
void
intel_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
WARN_ON(to_intel_plane_state(state)->vma);
drm_atomic_helper_plane_destroy_state(plane, state);
}
unsigned int intel_plane_data_rate(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int cpp;
if (!plane_state->base.visible)
return 0;
cpp = fb->format->cpp[0];
/*
* Based on HSD#:1408715493
* NV12 cpp == 4, P010 cpp == 8
*
* FIXME what is the logic behind this?
*/
if (fb->format->is_yuv && fb->format->num_planes > 1)
cpp *= 4;
return cpp * crtc_state->pixel_rate;
}
int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state,
const struct intel_plane_state *old_plane_state,
struct intel_plane_state *new_plane_state)
{
struct intel_plane *plane = to_intel_plane(new_plane_state->base.plane);
int ret;
new_crtc_state->active_planes &= ~BIT(plane->id);
new_crtc_state->nv12_planes &= ~BIT(plane->id);
new_crtc_state->c8_planes &= ~BIT(plane->id);
new_crtc_state->data_rate[plane->id] = 0;
new_plane_state->base.visible = false;
if (!new_plane_state->base.crtc && !old_plane_state->base.crtc)
return 0;
ret = plane->check_plane(new_crtc_state, new_plane_state);
if (ret)
return ret;
/* FIXME pre-g4x don't work like this */
if (new_plane_state->base.visible)
new_crtc_state->active_planes |= BIT(plane->id);
if (new_plane_state->base.visible &&
is_planar_yuv_format(new_plane_state->base.fb->format->format))
new_crtc_state->nv12_planes |= BIT(plane->id);
if (new_plane_state->base.visible &&
new_plane_state->base.fb->format->format == DRM_FORMAT_C8)
new_crtc_state->c8_planes |= BIT(plane->id);
if (new_plane_state->base.visible || old_plane_state->base.visible)
new_crtc_state->update_planes |= BIT(plane->id);
new_crtc_state->data_rate[plane->id] =
intel_plane_data_rate(new_crtc_state, new_plane_state);
return intel_plane_atomic_calc_changes(old_crtc_state, new_crtc_state,
old_plane_state, new_plane_state);
}
static struct intel_crtc *
get_crtc_from_states(const struct intel_plane_state *old_plane_state,
const struct intel_plane_state *new_plane_state)
{
if (new_plane_state->base.crtc)
return to_intel_crtc(new_plane_state->base.crtc);
if (old_plane_state->base.crtc)
return to_intel_crtc(old_plane_state->base.crtc);
return NULL;
}
static int intel_plane_atomic_check(struct drm_plane *_plane,
struct drm_plane_state *_new_plane_state)
{
struct intel_plane *plane = to_intel_plane(_plane);
struct intel_atomic_state *state =
to_intel_atomic_state(_new_plane_state->state);
struct intel_plane_state *new_plane_state =
to_intel_plane_state(_new_plane_state);
const struct intel_plane_state *old_plane_state =
intel_atomic_get_old_plane_state(state, plane);
struct intel_crtc *crtc =
get_crtc_from_states(old_plane_state, new_plane_state);
const struct intel_crtc_state *old_crtc_state;
struct intel_crtc_state *new_crtc_state;
new_plane_state->base.visible = false;
if (!crtc)
return 0;
old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
return intel_plane_atomic_check_with_state(old_crtc_state,
new_crtc_state,
old_plane_state,
new_plane_state);
}
static struct intel_plane *
skl_next_plane_to_commit(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct skl_ddb_entry entries_y[I915_MAX_PLANES],
struct skl_ddb_entry entries_uv[I915_MAX_PLANES],
unsigned int *update_mask)
{
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
struct intel_plane_state *plane_state;
struct intel_plane *plane;
int i;
if (*update_mask == 0)
return NULL;
for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
enum plane_id plane_id = plane->id;
if (crtc->pipe != plane->pipe ||
!(*update_mask & BIT(plane_id)))
continue;
if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.plane_ddb_y[plane_id],
entries_y,
I915_MAX_PLANES, plane_id) ||
skl_ddb_allocation_overlaps(&crtc_state->wm.skl.plane_ddb_uv[plane_id],
entries_uv,
I915_MAX_PLANES, plane_id))
continue;
*update_mask &= ~BIT(plane_id);
entries_y[plane_id] = crtc_state->wm.skl.plane_ddb_y[plane_id];
entries_uv[plane_id] = crtc_state->wm.skl.plane_ddb_uv[plane_id];
return plane;
}
/* should never happen */
WARN_ON(1);
return NULL;
}
void intel_update_plane(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
trace_intel_update_plane(&plane->base, crtc);
plane->update_plane(plane, crtc_state, plane_state);
}
void intel_update_slave(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
trace_intel_update_plane(&plane->base, crtc);
plane->update_slave(plane, crtc_state, plane_state);
}
void intel_disable_plane(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
trace_intel_disable_plane(&plane->base, crtc);
plane->disable_plane(plane, crtc_state);
}
void skl_update_planes_on_crtc(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct intel_crtc_state *old_crtc_state =
intel_atomic_get_old_crtc_state(state, crtc);
struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
struct skl_ddb_entry entries_y[I915_MAX_PLANES];
struct skl_ddb_entry entries_uv[I915_MAX_PLANES];
u32 update_mask = new_crtc_state->update_planes;
struct intel_plane *plane;
memcpy(entries_y, old_crtc_state->wm.skl.plane_ddb_y,
sizeof(old_crtc_state->wm.skl.plane_ddb_y));
memcpy(entries_uv, old_crtc_state->wm.skl.plane_ddb_uv,
sizeof(old_crtc_state->wm.skl.plane_ddb_uv));
while ((plane = skl_next_plane_to_commit(state, crtc,
entries_y, entries_uv,
&update_mask))) {
struct intel_plane_state *new_plane_state =
intel_atomic_get_new_plane_state(state, plane);
if (new_plane_state->base.visible) {
intel_update_plane(plane, new_crtc_state, new_plane_state);
} else if (new_plane_state->slave) {
struct intel_plane *master =
new_plane_state->linked_plane;
/*
* We update the slave plane from this function because
* programming it from the master plane's update_plane
* callback runs into issues when the Y plane is
* reassigned, disabled or used by a different plane.
*
* The slave plane is updated with the master plane's
* plane_state.
*/
new_plane_state =
intel_atomic_get_new_plane_state(state, master);
intel_update_slave(plane, new_crtc_state, new_plane_state);
} else {
intel_disable_plane(plane, new_crtc_state);
}
}
}
void i9xx_update_planes_on_crtc(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
u32 update_mask = new_crtc_state->update_planes;
struct intel_plane_state *new_plane_state;
struct intel_plane *plane;
int i;
for_each_new_intel_plane_in_state(state, plane, new_plane_state, i) {
if (crtc->pipe != plane->pipe ||
!(update_mask & BIT(plane->id)))
continue;
if (new_plane_state->base.visible)
intel_update_plane(plane, new_crtc_state, new_plane_state);
else
intel_disable_plane(plane, new_crtc_state);
}
}
const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
.prepare_fb = intel_prepare_plane_fb,
.cleanup_fb = intel_cleanup_plane_fb,
.atomic_check = intel_plane_atomic_check,
};
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