Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 262 insertions, 0 deletions

diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
new file mode 100644
index 000000000..98f317636
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_gem_atomic_helper.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_frontend.h"
+#include "sun4i_layer.h"
+#include "sunxi_engine.h"
+
+static void sun4i_backend_layer_reset(struct drm_plane *plane)
+{
+	struct sun4i_layer_state *state;
+
+	if (plane->state) {
+		state = state_to_sun4i_layer_state(plane->state);
+
+		__drm_atomic_helper_plane_destroy_state(&state->state);
+
+		kfree(state);
+		plane->state = NULL;
+	}
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (state)
+		__drm_atomic_helper_plane_reset(plane, &state->state);
+}
+
+static struct drm_plane_state *
+sun4i_backend_layer_duplicate_state(struct drm_plane *plane)
+{
+	struct sun4i_layer_state *orig = state_to_sun4i_layer_state(plane->state);
+	struct sun4i_layer_state *copy;
+
+	copy = kzalloc(sizeof(*copy), GFP_KERNEL);
+	if (!copy)
+		return NULL;
+
+	__drm_atomic_helper_plane_duplicate_state(plane, &copy->state);
+	copy->uses_frontend = orig->uses_frontend;
+
+	return &copy->state;
+}
+
+static void sun4i_backend_layer_destroy_state(struct drm_plane *plane,
+					      struct drm_plane_state *state)
+{
+	struct sun4i_layer_state *s_state = state_to_sun4i_layer_state(state);
+
+	__drm_atomic_helper_plane_destroy_state(state);
+
+	kfree(s_state);
+}
+
+static void sun4i_backend_layer_atomic_disable(struct drm_plane *plane,
+					       struct drm_atomic_state *state)
+{
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct sun4i_layer_state *layer_state = state_to_sun4i_layer_state(old_state);
+	struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
+	struct sun4i_backend *backend = layer->backend;
+
+	sun4i_backend_layer_enable(backend, layer->id, false);
+
+	if (layer_state->uses_frontend) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&backend->frontend_lock, flags);
+		backend->frontend_teardown = true;
+		spin_unlock_irqrestore(&backend->frontend_lock, flags);
+	}
+}
+
+static void sun4i_backend_layer_atomic_update(struct drm_plane *plane,
+					      struct drm_atomic_state *state)
+{
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct sun4i_layer_state *layer_state = state_to_sun4i_layer_state(new_state);
+	struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
+	struct sun4i_backend *backend = layer->backend;
+	struct sun4i_frontend *frontend = backend->frontend;
+
+	sun4i_backend_cleanup_layer(backend, layer->id);
+
+	if (layer_state->uses_frontend) {
+		sun4i_frontend_init(frontend);
+		sun4i_frontend_update_coord(frontend, plane);
+		sun4i_frontend_update_buffer(frontend, plane);
+		sun4i_frontend_update_formats(frontend, plane,
+					      DRM_FORMAT_XRGB8888);
+		sun4i_backend_update_layer_frontend(backend, layer->id,
+						    DRM_FORMAT_XRGB8888);
+		sun4i_frontend_enable(frontend);
+	} else {
+		sun4i_backend_update_layer_formats(backend, layer->id, plane);
+		sun4i_backend_update_layer_buffer(backend, layer->id, plane);
+	}
+
+	sun4i_backend_update_layer_coord(backend, layer->id, plane);
+	sun4i_backend_update_layer_zpos(backend, layer->id, plane);
+	sun4i_backend_layer_enable(backend, layer->id, true);
+}
+
+static bool sun4i_layer_format_mod_supported(struct drm_plane *plane,
+					     uint32_t format, uint64_t modifier)
+{
+	struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
+
+	if (IS_ERR_OR_NULL(layer->backend->frontend))
+		return sun4i_backend_format_is_supported(format, modifier);
+
+	return sun4i_backend_format_is_supported(format, modifier) ||
+	       sun4i_frontend_format_is_supported(format, modifier);
+}
+
+static const struct drm_plane_helper_funcs sun4i_backend_layer_helper_funcs = {
+	.atomic_disable	= sun4i_backend_layer_atomic_disable,
+	.atomic_update	= sun4i_backend_layer_atomic_update,
+};
+
+static const struct drm_plane_funcs sun4i_backend_layer_funcs = {
+	.atomic_destroy_state	= sun4i_backend_layer_destroy_state,
+	.atomic_duplicate_state	= sun4i_backend_layer_duplicate_state,
+	.destroy		= drm_plane_cleanup,
+	.disable_plane		= drm_atomic_helper_disable_plane,
+	.reset			= sun4i_backend_layer_reset,
+	.update_plane		= drm_atomic_helper_update_plane,
+	.format_mod_supported	= sun4i_layer_format_mod_supported,
+};
+
+static const uint32_t sun4i_layer_formats[] = {
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ARGB4444,
+	DRM_FORMAT_ARGB1555,
+	DRM_FORMAT_BGRX8888,
+	DRM_FORMAT_RGBA5551,
+	DRM_FORMAT_RGBA4444,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_NV12,
+	DRM_FORMAT_NV16,
+	DRM_FORMAT_NV21,
+	DRM_FORMAT_NV61,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_YUV411,
+	DRM_FORMAT_YUV420,
+	DRM_FORMAT_YUV422,
+	DRM_FORMAT_YUV444,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVU411,
+	DRM_FORMAT_YVU420,
+	DRM_FORMAT_YVU422,
+	DRM_FORMAT_YVU444,
+	DRM_FORMAT_YVYU,
+};
+
+static const uint32_t sun4i_backend_layer_formats[] = {
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ARGB4444,
+	DRM_FORMAT_ARGB1555,
+	DRM_FORMAT_RGBA5551,
+	DRM_FORMAT_RGBA4444,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+};
+
+static const uint64_t sun4i_layer_modifiers[] = {
+	DRM_FORMAT_MOD_LINEAR,
+	DRM_FORMAT_MOD_ALLWINNER_TILED,
+	DRM_FORMAT_MOD_INVALID
+};
+
+static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
+						struct sun4i_backend *backend,
+						enum drm_plane_type type,
+						unsigned int id)
+{
+	const uint64_t *modifiers = sun4i_layer_modifiers;
+	const uint32_t *formats = sun4i_layer_formats;
+	unsigned int formats_len = ARRAY_SIZE(sun4i_layer_formats);
+	struct sun4i_layer *layer;
+	int ret;
+
+	layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
+	if (!layer)
+		return ERR_PTR(-ENOMEM);
+
+	layer->id = id;
+	layer->backend = backend;
+
+	if (IS_ERR_OR_NULL(backend->frontend)) {
+		formats = sun4i_backend_layer_formats;
+		formats_len = ARRAY_SIZE(sun4i_backend_layer_formats);
+		modifiers = NULL;
+	}
+
+	/* possible crtcs are set later */
+	ret = drm_universal_plane_init(drm, &layer->plane, 0,
+				       &sun4i_backend_layer_funcs,
+				       formats, formats_len,
+				       modifiers, type, NULL);
+	if (ret) {
+		dev_err(drm->dev, "Couldn't initialize layer\n");
+		return ERR_PTR(ret);
+	}
+
+	drm_plane_helper_add(&layer->plane,
+			     &sun4i_backend_layer_helper_funcs);
+
+	drm_plane_create_alpha_property(&layer->plane);
+	drm_plane_create_zpos_property(&layer->plane, layer->id,
+				       0, SUN4I_BACKEND_NUM_LAYERS - 1);
+
+	return layer;
+}
+
+struct drm_plane **sun4i_layers_init(struct drm_device *drm,
+				     struct sunxi_engine *engine)
+{
+	struct drm_plane **planes;
+	struct sun4i_backend *backend = engine_to_sun4i_backend(engine);
+	int i;
+
+	/* We need to have a sentinel at the need, hence the overallocation */
+	planes = devm_kcalloc(drm->dev, SUN4I_BACKEND_NUM_LAYERS + 1,
+			      sizeof(*planes), GFP_KERNEL);
+	if (!planes)
+		return ERR_PTR(-ENOMEM);
+
+	for (i = 0; i < SUN4I_BACKEND_NUM_LAYERS; i++) {
+		enum drm_plane_type type = i ? DRM_PLANE_TYPE_OVERLAY : DRM_PLANE_TYPE_PRIMARY;
+		struct sun4i_layer *layer;
+
+		layer = sun4i_layer_init_one(drm, backend, type, i);
+		if (IS_ERR(layer)) {
+			dev_err(drm->dev, "Couldn't initialize %s plane\n",
+				i ? "overlay" : "primary");
+			return ERR_CAST(layer);
+		}
+
+		planes[i] = &layer->plane;
+	}
+
+	return planes;
+}