blob: 47234d8985490dc82bbb637cbd7aa553d6f54b07 [file] [log] [blame]
/*
* 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_cdclk.h"
#include "intel_display_types.h"
#include "intel_pm.h"
#include "intel_sprite.h"
static void intel_plane_state_reset(struct intel_plane_state *plane_state,
struct intel_plane *plane)
{
memset(plane_state, 0, sizeof(*plane_state));
__drm_atomic_helper_plane_state_reset(&plane_state->uapi, &plane->base);
plane_state->scaler_id = -1;
}
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);
}
intel_plane_state_reset(plane_state, plane);
plane->base.state = &plane_state->uapi;
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 intel_plane_state *intel_state;
intel_state = to_intel_plane_state(plane->state);
intel_state = kmemdup(intel_state, sizeof(*intel_state), GFP_KERNEL);
if (!intel_state)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane, &intel_state->uapi);
intel_state->ggtt_vma = NULL;
intel_state->dpt_vma = NULL;
intel_state->flags = 0;
/* add reference to fb */
if (intel_state->hw.fb)
drm_framebuffer_get(intel_state->hw.fb);
return &intel_state->uapi;
}
/**
* 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)
{
struct intel_plane_state *plane_state = to_intel_plane_state(state);
drm_WARN_ON(plane->dev, plane_state->ggtt_vma);
drm_WARN_ON(plane->dev, plane_state->dpt_vma);
__drm_atomic_helper_plane_destroy_state(&plane_state->uapi);
if (plane_state->hw.fb)
drm_framebuffer_put(plane_state->hw.fb);
kfree(plane_state);
}
unsigned int intel_adjusted_rate(const struct drm_rect *src,
const struct drm_rect *dst,
unsigned int rate)
{
unsigned int src_w, src_h, dst_w, dst_h;
src_w = drm_rect_width(src) >> 16;
src_h = drm_rect_height(src) >> 16;
dst_w = drm_rect_width(dst);
dst_h = drm_rect_height(dst);
/* Downscaling limits the maximum pixel rate */
dst_w = min(src_w, dst_w);
dst_h = min(src_h, dst_h);
return DIV_ROUND_UP_ULL(mul_u32_u32(rate, src_w * src_h),
dst_w * dst_h);
}
unsigned int intel_plane_pixel_rate(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
/*
* Note we don't check for plane visibility here as
* we want to use this when calculating the cursor
* watermarks even if the cursor is fully offscreen.
* That depends on the src/dst rectangles being
* correctly populated whenever the watermark code
* considers the cursor to be visible, whether or not
* it is actually visible.
*
* See: intel_wm_plane_visible() and intel_check_cursor()
*/
return intel_adjusted_rate(&plane_state->uapi.src,
&plane_state->uapi.dst,
crtc_state->pixel_rate);
}
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->hw.fb;
unsigned int cpp;
unsigned int pixel_rate;
if (!plane_state->uapi.visible)
return 0;
pixel_rate = intel_plane_pixel_rate(crtc_state, plane_state);
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 pixel_rate * cpp;
}
int intel_plane_calc_min_cdclk(struct intel_atomic_state *state,
struct intel_plane *plane,
bool *need_cdclk_calc)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
const struct intel_plane_state *plane_state =
intel_atomic_get_new_plane_state(state, plane);
struct intel_crtc *crtc = to_intel_crtc(plane_state->hw.crtc);
const struct intel_cdclk_state *cdclk_state;
const struct intel_crtc_state *old_crtc_state;
struct intel_crtc_state *new_crtc_state;
if (!plane_state->uapi.visible || !plane->min_cdclk)
return 0;
old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
new_crtc_state->min_cdclk[plane->id] =
plane->min_cdclk(new_crtc_state, plane_state);
/*
* No need to check against the cdclk state if
* the min cdclk for the plane doesn't increase.
*
* Ie. we only ever increase the cdclk due to plane
* requirements. This can reduce back and forth
* display blinking due to constant cdclk changes.
*/
if (new_crtc_state->min_cdclk[plane->id] <=
old_crtc_state->min_cdclk[plane->id])
return 0;
cdclk_state = intel_atomic_get_cdclk_state(state);
if (IS_ERR(cdclk_state))
return PTR_ERR(cdclk_state);
/*
* No need to recalculate the cdclk state if
* the min cdclk for the pipe doesn't increase.
*
* Ie. we only ever increase the cdclk due to plane
* requirements. This can reduce back and forth
* display blinking due to constant cdclk changes.
*/
if (new_crtc_state->min_cdclk[plane->id] <=
cdclk_state->min_cdclk[crtc->pipe])
return 0;
drm_dbg_kms(&dev_priv->drm,
"[PLANE:%d:%s] min cdclk (%d kHz) > [CRTC:%d:%s] min cdclk (%d kHz)\n",
plane->base.base.id, plane->base.name,
new_crtc_state->min_cdclk[plane->id],
crtc->base.base.id, crtc->base.name,
cdclk_state->min_cdclk[crtc->pipe]);
*need_cdclk_calc = true;
return 0;
}
static void intel_plane_clear_hw_state(struct intel_plane_state *plane_state)
{
if (plane_state->hw.fb)
drm_framebuffer_put(plane_state->hw.fb);
memset(&plane_state->hw, 0, sizeof(plane_state->hw));
}
void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
const struct intel_plane_state *from_plane_state,
struct intel_crtc *crtc)
{
intel_plane_clear_hw_state(plane_state);
/*
* For the bigjoiner slave uapi.crtc will point at
* the master crtc. So we explicitly assign the right
* slave crtc to hw.crtc. uapi.crtc!=NULL simply indicates
* the plane is logically enabled on the uapi level.
*/
plane_state->hw.crtc = from_plane_state->uapi.crtc ? &crtc->base : NULL;
plane_state->hw.fb = from_plane_state->uapi.fb;
if (plane_state->hw.fb)
drm_framebuffer_get(plane_state->hw.fb);
plane_state->hw.alpha = from_plane_state->uapi.alpha;
plane_state->hw.pixel_blend_mode =
from_plane_state->uapi.pixel_blend_mode;
plane_state->hw.rotation = from_plane_state->uapi.rotation;
plane_state->hw.color_encoding = from_plane_state->uapi.color_encoding;
plane_state->hw.color_range = from_plane_state->uapi.color_range;
plane_state->hw.scaling_filter = from_plane_state->uapi.scaling_filter;
plane_state->uapi.src = drm_plane_state_src(&from_plane_state->uapi);
plane_state->uapi.dst = drm_plane_state_dest(&from_plane_state->uapi);
}
void intel_plane_copy_hw_state(struct intel_plane_state *plane_state,
const struct intel_plane_state *from_plane_state)
{
intel_plane_clear_hw_state(plane_state);
memcpy(&plane_state->hw, &from_plane_state->hw,
sizeof(plane_state->hw));
if (plane_state->hw.fb)
drm_framebuffer_get(plane_state->hw.fb);
}
void intel_plane_set_invisible(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
crtc_state->active_planes &= ~BIT(plane->id);
crtc_state->nv12_planes &= ~BIT(plane->id);
crtc_state->c8_planes &= ~BIT(plane->id);
crtc_state->data_rate[plane->id] = 0;
crtc_state->min_cdclk[plane->id] = 0;
plane_state->uapi.visible = false;
}
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->uapi.plane);
const struct drm_framebuffer *fb = new_plane_state->hw.fb;
int ret;
intel_plane_set_invisible(new_crtc_state, new_plane_state);
new_crtc_state->enabled_planes &= ~BIT(plane->id);
if (!new_plane_state->hw.crtc && !old_plane_state->hw.crtc)
return 0;
ret = plane->check_plane(new_crtc_state, new_plane_state);
if (ret)
return ret;
if (fb)
new_crtc_state->enabled_planes |= BIT(plane->id);
/* FIXME pre-g4x don't work like this */
if (new_plane_state->uapi.visible)
new_crtc_state->active_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible &&
intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
new_crtc_state->nv12_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible &&
fb->format->format == DRM_FORMAT_C8)
new_crtc_state->c8_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible || old_plane_state->uapi.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_plane *
intel_crtc_get_plane(struct intel_crtc *crtc, enum plane_id plane_id)
{
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
struct intel_plane *plane;
for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
if (plane->id == plane_id)
return plane;
}
return NULL;
}
int intel_plane_atomic_check(struct intel_atomic_state *state,
struct intel_plane *plane)
{
struct drm_i915_private *i915 = to_i915(state->base.dev);
struct intel_plane_state *new_plane_state =
intel_atomic_get_new_plane_state(state, plane);
const struct intel_plane_state *old_plane_state =
intel_atomic_get_old_plane_state(state, plane);
const struct intel_plane_state *new_master_plane_state;
struct intel_crtc *crtc = intel_get_crtc_for_pipe(i915, plane->pipe);
const 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);
if (new_crtc_state && new_crtc_state->bigjoiner_slave) {
struct intel_plane *master_plane =
intel_crtc_get_plane(new_crtc_state->bigjoiner_linked_crtc,
plane->id);
new_master_plane_state =
intel_atomic_get_new_plane_state(state, master_plane);
} else {
new_master_plane_state = new_plane_state;
}
intel_plane_copy_uapi_to_hw_state(new_plane_state,
new_master_plane_state,
crtc);
new_plane_state->uapi.visible = false;
if (!new_crtc_state)
return 0;
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 */
drm_WARN_ON(state->base.dev, 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->uapi.crtc);
trace_intel_update_plane(&plane->base, crtc);
if (crtc_state->uapi.async_flip && plane->async_flip)
plane->async_flip(plane, crtc_state, plane_state, true);
else
plane->update_plane(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->uapi.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->uapi.visible ||
new_plane_state->planar_slave) {
intel_update_plane(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->uapi.visible)
intel_update_plane(plane, new_crtc_state, new_plane_state);
else
intel_disable_plane(plane, new_crtc_state);
}
}
int intel_atomic_plane_check_clipping(struct intel_plane_state *plane_state,
struct intel_crtc_state *crtc_state,
int min_scale, int max_scale,
bool can_position)
{
struct drm_framebuffer *fb = plane_state->hw.fb;
struct drm_rect *src = &plane_state->uapi.src;
struct drm_rect *dst = &plane_state->uapi.dst;
unsigned int rotation = plane_state->hw.rotation;
struct drm_rect clip = {};
int hscale, vscale;
if (!fb) {
plane_state->uapi.visible = false;
return 0;
}
drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation);
/* Check scaling */
hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale);
vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale);
if (hscale < 0 || vscale < 0) {
DRM_DEBUG_KMS("Invalid scaling of plane\n");
drm_rect_debug_print("src: ", src, true);
drm_rect_debug_print("dst: ", dst, false);
return -ERANGE;
}
if (crtc_state->hw.enable) {
clip.x2 = crtc_state->pipe_src_w;
clip.y2 = crtc_state->pipe_src_h;
}
/* right side of the image is on the slave crtc, adjust dst to match */
if (crtc_state->bigjoiner_slave)
drm_rect_translate(dst, -crtc_state->pipe_src_w, 0);
/*
* FIXME: This might need further adjustment for seamless scaling
* with phase information, for the 2p2 and 2p1 scenarios.
*/
plane_state->uapi.visible = drm_rect_clip_scaled(src, dst, &clip);
drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation);
if (!can_position && plane_state->uapi.visible &&
!drm_rect_equals(dst, &clip)) {
DRM_DEBUG_KMS("Plane must cover entire CRTC\n");
drm_rect_debug_print("dst: ", dst, false);
drm_rect_debug_print("clip: ", &clip, false);
return -EINVAL;
}
return 0;
}
static const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
.prepare_fb = intel_prepare_plane_fb,
.cleanup_fb = intel_cleanup_plane_fb,
};
void intel_plane_helper_add(struct intel_plane *plane)
{
drm_plane_helper_add(&plane->base, &intel_plane_helper_funcs);
}