[Intel-gfx] [PATCH 5/7] drm/i915: Prepare for atomic plane helpers (v6)
Matt Roper
matthew.d.roper at intel.com
Tue Dec 9 11:53:41 PST 2014
Add the new driver entrypoints that will be called by the atomic plane
helpers.
This patch does not actually switch over to the new plane helpers yet,
so there should be no functional change here. Also note that although
plane programming was already split into check/prepare/commit steps,
some of the semantics of those individual functions will need to change
slightly when we do make the jump so that they match the behavior the
plane helpers expect.
v2:
- Renamed file from intel_atomic.c to intel_atomic_plane.c (Daniel)
- Fix a copy/paste comment mistake (Bob)
v3:
- Use prepare/cleanup functions that we've already factored out
- Use newly refactored pre_commit/commit/post_commit to avoid sleeping
during vblank evasion
v4:
- Rebase to latest di-nightly requires adding an 'old_state' parameter
to atomic_update;
v5:
- Must have botched a rebase somewhere and lost some work. Restore
state 'dirty' flag to let begin/end code know which planes to
run the pre_commit/post_commit hooks for. This would have actually
shown up as broken in the next commit rather than this one.
v6:
- Squash kerneldoc patch into this one.
- Previous patches have now already taken care of most of the
infrastructure that used to be in this patch. All we're adding here
now is some thin wrappers.
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
Documentation/DocBook/drm.tmpl | 5 ++
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/intel_atomic_plane.c | 145 ++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_display.c | 22 ++++-
drivers/gpu/drm/i915/intel_drv.h | 8 ++
drivers/gpu/drm/i915/intel_sprite.c | 8 ++
6 files changed, 188 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/i915/intel_atomic_plane.c
diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 85287cb..3d9fef9 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -3907,6 +3907,11 @@ int num_ioctls;</synopsis>
</para>
</sect2>
<sect2>
+ <title>Atomic Plane Helpers</title>
+!Pdrivers/gpu/drm/i915/intel_atomic_plane.c atomic plane helpers
+!Idrivers/gpu/drm/i915/intel_atomic_plane.c
+ </sect2>
+ <sect2>
<title>Output Probing</title>
<para>
This section covers output probing and related infrastructure like the
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index e4083e4..f44fe9f 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -64,6 +64,7 @@ i915-y += dvo_ch7017.o \
dvo_ns2501.o \
dvo_sil164.o \
dvo_tfp410.o \
+ intel_atomic_plane.o \
intel_crt.o \
intel_ddi.o \
intel_dp.o \
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
new file mode 100644
index 0000000..3b08692
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -0,0 +1,145 @@
+/*
+ * 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 helper support
+ *
+ * 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/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_plane_helper.h>
+#include "intel_drv.h"
+
+/**
+ * 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.
+ */
+struct drm_plane_state *
+intel_plane_duplicate_state(struct drm_plane *plane)
+{
+ struct intel_plane_state *state;
+
+ if (plane->state)
+ state = kmemdup(plane->state, sizeof(*state), GFP_KERNEL);
+ else
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+
+ if (state && state->base.fb)
+ drm_framebuffer_reference(state->base.fb);
+
+ return &state->base;
+}
+
+/**
+ * intel_plane_destroy_state - destroy plane state
+ * @plane: drm plane
+ *
+ * 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)
+{
+ drm_atomic_helper_plane_destroy_state(plane, state);
+}
+
+static int intel_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct drm_crtc *crtc = state->crtc;
+ struct intel_crtc *intel_crtc;
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ struct intel_plane_state *intel_state = to_intel_plane_state(state);
+
+ crtc = crtc ? crtc : plane->crtc;
+ intel_crtc = to_intel_crtc(crtc);
+
+ /*
+ * The original src/dest coordinates are stored in state->base, but
+ * we want to keep another copy internal to our driver that we can
+ * clip/modify ourselves.
+ */
+ intel_state->src.x1 = state->src_x;
+ intel_state->src.y1 = state->src_y;
+ intel_state->src.x2 = state->src_x + state->src_w;
+ intel_state->src.y2 = state->src_y + state->src_h;
+ intel_state->dst.x1 = state->crtc_x;
+ intel_state->dst.y1 = state->crtc_y;
+ intel_state->dst.x2 = state->crtc_x + state->crtc_w;
+ intel_state->dst.y2 = state->crtc_y + state->crtc_h;
+
+ /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */
+ intel_state->clip.x1 = 0;
+ intel_state->clip.y1 = 0;
+ intel_state->clip.x2 =
+ intel_crtc->active ? intel_crtc->config.pipe_src_w : 0;
+ intel_state->clip.y2 =
+ intel_crtc->active ? intel_crtc->config.pipe_src_h : 0;
+
+ /*
+ * Disabling a plane is always okay; we just need to update
+ * fb tracking in a special way since cleanup_fb() won't
+ * get called by the plane helpers.
+ */
+ if (state->fb == NULL && plane->state->fb != NULL) {
+ /*
+ * 'prepare' is never called when plane is being disabled, so
+ * we need to handle frontbuffer tracking as a special case
+ */
+ intel_crtc->atomic.track_fbs |= (1 << drm_plane_index(plane));
+ }
+
+ return intel_plane->check_plane(plane, intel_state);
+}
+
+static void intel_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ struct intel_plane_state *intel_state =
+ to_intel_plane_state(plane->state);
+
+ /* Don't disable an already disabled plane */
+ if (!plane->state->fb && !old_state->fb)
+ return;
+
+ intel_plane->commit_plane(plane, intel_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,
+ .atomic_update = intel_plane_atomic_update,
+};
+
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 036f5b7..ea47923 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -98,6 +98,8 @@ static void vlv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_config *pipe_config);
static void chv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_config *pipe_config);
+static void intel_begin_crtc_commit(struct drm_crtc *crtc);
+static void intel_finish_crtc_commit(struct drm_crtc *crtc);
static struct intel_encoder *intel_find_encoder(struct intel_connector *connector, int pipe)
{
@@ -9794,6 +9796,8 @@ out_hang:
static struct drm_crtc_helper_funcs intel_helper_funcs = {
.mode_set_base_atomic = intel_pipe_set_base_atomic,
.load_lut = intel_crtc_load_lut,
+ .atomic_begin = intel_begin_crtc_commit,
+ .atomic_flush = intel_finish_crtc_commit,
};
/**
@@ -12005,6 +12009,7 @@ intel_disable_plane(struct drm_plane *plane)
void intel_plane_destroy(struct drm_plane *plane)
{
struct intel_plane *intel_plane = to_intel_plane(plane);
+ intel_plane_destroy_state(plane, plane->state);
drm_plane_cleanup(plane);
kfree(intel_plane);
}
@@ -12013,13 +12018,17 @@ static const struct drm_plane_funcs intel_primary_plane_funcs = {
.update_plane = intel_update_plane,
.disable_plane = intel_disable_plane,
.destroy = intel_plane_destroy,
- .set_property = intel_plane_set_property
+ .set_property = intel_plane_set_property,
+ .atomic_duplicate_state = intel_plane_duplicate_state,
+ .atomic_destroy_state = intel_plane_destroy_state,
+
};
static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
int pipe)
{
struct intel_plane *primary;
+ struct intel_plane_state *state;
const uint32_t *intel_primary_formats;
int num_formats;
@@ -12027,6 +12036,8 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
if (primary == NULL)
return NULL;
+ primary->base.state = intel_plane_duplicate_state(&primary->base);
+ state = to_intel_plane_state(primary->base.state);
primary->can_scale = false;
primary->max_downscale = 1;
primary->pipe = pipe;
@@ -12062,6 +12073,8 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
primary->rotation);
}
+ drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
+
return &primary->base;
}
@@ -12182,17 +12195,22 @@ static const struct drm_plane_funcs intel_cursor_plane_funcs = {
.disable_plane = intel_disable_plane,
.destroy = intel_plane_destroy,
.set_property = intel_plane_set_property,
+ .atomic_duplicate_state = intel_plane_duplicate_state,
+ .atomic_destroy_state = intel_plane_destroy_state,
};
static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
int pipe)
{
struct intel_plane *cursor;
+ struct intel_plane_state *state;
cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
if (cursor == NULL)
return NULL;
+ cursor->base.state = intel_plane_duplicate_state(&cursor->base);
+ state = to_intel_plane_state(cursor->base.state);
cursor->can_scale = false;
cursor->max_downscale = 1;
cursor->pipe = pipe;
@@ -12219,6 +12237,8 @@ static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
cursor->rotation);
}
+ drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
+
return &cursor->base;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 7cb837d..abb80e1 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -437,6 +437,7 @@ struct intel_crtc_atomic_commit {
bool disable_fbc;
bool pre_disable_primary;
bool update_wm;
+ unsigned track_fbs;
/* Sleepable operations to perform after commit */
unsigned fb_bits;
@@ -574,6 +575,7 @@ struct cxsr_latency {
#define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
#define to_intel_plane(x) container_of(x, struct intel_plane, base)
+#define to_intel_plane_state(x) container_of(x, struct intel_plane_state, base)
#define intel_fb_obj(x) (x ? to_intel_framebuffer(x)->obj : NULL)
struct intel_hdmi {
@@ -1247,4 +1249,10 @@ void intel_pre_disable_primary(struct drm_crtc *crtc);
/* intel_tv.c */
void intel_tv_init(struct drm_device *dev);
+/* intel_atomic.c */
+struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
+void intel_plane_destroy_state(struct drm_plane *plane,
+ struct drm_plane_state *state);
+extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
+
#endif /* __INTEL_DRV_H__ */
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 09f7be9..946ff10 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -33,6 +33,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_rect.h>
+#include <drm/drm_plane_helper.h>
#include "intel_drv.h"
#include <drm/i915_drm.h>
#include "i915_drv.h"
@@ -1392,6 +1393,8 @@ static const struct drm_plane_funcs intel_plane_funcs = {
.disable_plane = intel_disable_plane,
.destroy = intel_plane_destroy,
.set_property = intel_plane_set_property,
+ .atomic_duplicate_state = intel_plane_duplicate_state,
+ .atomic_destroy_state = intel_plane_destroy_state,
};
static uint32_t ilk_plane_formats[] = {
@@ -1453,6 +1456,9 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
if (!intel_plane)
return -ENOMEM;
+ intel_plane->base.state =
+ intel_plane_duplicate_state(&intel_plane->base);
+
switch (INTEL_INFO(dev)->gen) {
case 5:
case 6:
@@ -1546,6 +1552,8 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
dev->mode_config.rotation_property,
intel_plane->rotation);
+ drm_plane_helper_add(&intel_plane->base, &intel_plane_helper_funcs);
+
out:
return ret;
}
--
1.8.5.1
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