[PATCH 7/9] drm/verisilicon: Add drm plane funcs
Keith Zhao
keith.zhao at starfivetech.com
Fri Jun 2 00:40:41 PDT 2023
Implement plane functions for the DRM driver.
Signed-off-by: Keith Zhao <keith.zhao at starfivetech.com>
---
drivers/gpu/drm/verisilicon/Makefile | 3 +-
drivers/gpu/drm/verisilicon/vs_plane.c | 440 +++++++++++++++++++++++++
drivers/gpu/drm/verisilicon/vs_plane.h | 74 +++++
3 files changed, 516 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/verisilicon/vs_plane.c
create mode 100644 drivers/gpu/drm/verisilicon/vs_plane.h
diff --git a/drivers/gpu/drm/verisilicon/Makefile b/drivers/gpu/drm/verisilicon/Makefile
index bae5fbab9bbb..d96ad9399fc7 100644
--- a/drivers/gpu/drm/verisilicon/Makefile
+++ b/drivers/gpu/drm/verisilicon/Makefile
@@ -3,7 +3,8 @@
vs_drm-objs := vs_drv.o \
vs_crtc.o \
vs_fb.o \
- vs_gem.o
+ vs_gem.o \
+ vs_plane.o
obj-$(CONFIG_DRM_VERISILICON) += vs_drm.o
diff --git a/drivers/gpu/drm/verisilicon/vs_plane.c b/drivers/gpu/drm/verisilicon/vs_plane.c
new file mode 100644
index 000000000000..7b0dcef232ae
--- /dev/null
+++ b/drivers/gpu/drm/verisilicon/vs_plane.c
@@ -0,0 +1,440 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_fb_dma_helper.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_plane_helper.h>
+
+#include <drm/vs_drm.h>
+
+#include "vs_crtc.h"
+#include "vs_fb.h"
+#include "vs_gem.h"
+#include "vs_plane.h"
+#include "vs_type.h"
+
+void vs_plane_destory(struct drm_plane *plane)
+{
+ struct vs_plane *vs_plane = to_vs_plane(plane);
+
+ drm_plane_cleanup(plane);
+ kfree(vs_plane);
+}
+
+static void vs_plane_reset(struct drm_plane *plane)
+{
+ struct vs_plane_state *state;
+ struct vs_plane *vs_plane = to_vs_plane(plane);
+
+ if (plane->state) {
+ __drm_atomic_helper_plane_destroy_state(plane->state);
+
+ state = to_vs_plane_state(plane->state);
+ kfree(state);
+ plane->state = NULL;
+ }
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return;
+
+ __drm_atomic_helper_plane_reset(plane, &state->base);
+
+ state->degamma = VS_DEGAMMA_DISABLE;
+ state->degamma_changed = false;
+ state->base.zpos = vs_plane->id;
+
+ memset(&state->status, 0, sizeof(state->status));
+}
+
+static void _vs_plane_duplicate_blob(struct vs_plane_state *state,
+ struct vs_plane_state *ori_state)
+{
+ state->watermark = ori_state->watermark;
+ state->color_mgmt = ori_state->color_mgmt;
+ state->roi = ori_state->roi;
+
+ if (state->watermark)
+ drm_property_blob_get(state->watermark);
+ if (state->color_mgmt)
+ drm_property_blob_get(state->color_mgmt);
+ if (state->roi)
+ drm_property_blob_get(state->roi);
+}
+
+static int
+_vs_plane_set_property_blob_from_id(struct drm_device *dev,
+ struct drm_property_blob **blob,
+ u64 blob_id,
+ size_t expected_size)
+{
+ struct drm_property_blob *new_blob = NULL;
+
+ if (blob_id) {
+ new_blob = drm_property_lookup_blob(dev, blob_id);
+ if (!new_blob)
+ return -EINVAL;
+
+ if (new_blob->length != expected_size) {
+ drm_property_blob_put(new_blob);
+ return -EINVAL;
+ }
+ }
+
+ drm_property_replace_blob(blob, new_blob);
+ drm_property_blob_put(new_blob);
+
+ return 0;
+}
+
+static struct drm_plane_state *
+vs_plane_atomic_duplicate_state(struct drm_plane *plane)
+{
+ struct vs_plane_state *ori_state;
+ struct vs_plane_state *state;
+
+ if (WARN_ON(!plane->state))
+ return NULL;
+
+ ori_state = to_vs_plane_state(plane->state);
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
+
+ state->degamma = ori_state->degamma;
+ state->degamma_changed = ori_state->degamma_changed;
+
+ _vs_plane_duplicate_blob(state, ori_state);
+ memcpy(&state->status, &ori_state->status, sizeof(ori_state->status));
+
+ return &state->base;
+}
+
+static void vs_plane_atomic_destroy_state(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct vs_plane_state *vs_plane_state = to_vs_plane_state(state);
+
+ __drm_atomic_helper_plane_destroy_state(state);
+
+ drm_property_blob_put(vs_plane_state->watermark);
+ drm_property_blob_put(vs_plane_state->color_mgmt);
+ drm_property_blob_put(vs_plane_state->roi);
+ kfree(vs_plane_state);
+}
+
+static int vs_plane_atomic_set_property(struct drm_plane *plane,
+ struct drm_plane_state *state,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct drm_device *dev = plane->dev;
+ struct vs_plane *vs_plane = to_vs_plane(plane);
+ struct vs_plane_state *vs_plane_state = to_vs_plane_state(state);
+ int ret = 0;
+
+ if (property == vs_plane->degamma_mode) {
+ if (vs_plane_state->degamma != val) {
+ vs_plane_state->degamma = val;
+ vs_plane_state->degamma_changed = true;
+ } else {
+ vs_plane_state->degamma_changed = false;
+ }
+ } else if (property == vs_plane->watermark_prop) {
+ ret = _vs_plane_set_property_blob_from_id(dev,
+ &vs_plane_state->watermark,
+ val,
+ sizeof(struct drm_vs_watermark));
+ return ret;
+ } else if (property == vs_plane->color_mgmt_prop) {
+ ret = _vs_plane_set_property_blob_from_id(dev,
+ &vs_plane_state->color_mgmt,
+ val,
+ sizeof(struct drm_vs_color_mgmt));
+ return ret;
+ } else if (property == vs_plane->roi_prop) {
+ ret = _vs_plane_set_property_blob_from_id(dev,
+ &vs_plane_state->roi,
+ val,
+ sizeof(struct drm_vs_roi));
+ return ret;
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vs_plane_atomic_get_property(struct drm_plane *plane,
+ const struct drm_plane_state *state,
+ struct drm_property *property,
+ uint64_t *val)
+{
+ struct vs_plane *vs_plane = to_vs_plane(plane);
+ const struct vs_plane_state *vs_plane_state =
+ container_of(state, const struct vs_plane_state, base);
+
+ if (property == vs_plane->degamma_mode)
+ *val = vs_plane_state->degamma;
+ else if (property == vs_plane->watermark_prop)
+ *val = (vs_plane_state->watermark) ?
+ vs_plane_state->watermark->base.id : 0;
+ else if (property == vs_plane->color_mgmt_prop)
+ *val = (vs_plane_state->color_mgmt) ?
+ vs_plane_state->color_mgmt->base.id : 0;
+ else if (property == vs_plane->roi_prop)
+ *val = (vs_plane_state->roi) ?
+ vs_plane_state->roi->base.id : 0;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static bool vs_format_mod_supported(struct drm_plane *plane,
+ u32 format,
+ u64 modifier)
+{
+ int i;
+
+ /* We always have to allow these modifiers:
+ * 1. Core DRM checks for LINEAR support if userspace does not provide modifiers.
+ * 2. Not passing any modifiers is the same as explicitly passing INVALID.
+ */
+ if (modifier == DRM_FORMAT_MOD_LINEAR)
+ return true;
+
+ /* Check that the modifier is on the list of the plane's supported modifiers. */
+ for (i = 0; i < plane->modifier_count; i++) {
+ if (modifier == plane->modifiers[i])
+ break;
+ }
+
+ if (i == plane->modifier_count)
+ return false;
+
+ return true;
+}
+
+const struct drm_plane_funcs vs_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .destroy = vs_plane_destory,
+ .reset = vs_plane_reset,
+ .atomic_duplicate_state = vs_plane_atomic_duplicate_state,
+ .atomic_destroy_state = vs_plane_atomic_destroy_state,
+ .atomic_set_property = vs_plane_atomic_set_property,
+ .atomic_get_property = vs_plane_atomic_get_property,
+ .format_mod_supported = vs_format_mod_supported,
+};
+
+static unsigned char vs_get_plane_number(struct drm_framebuffer *fb)
+{
+ const struct drm_format_info *info;
+
+ if (!fb)
+ return 0;
+
+ info = drm_format_info(fb->format->format);
+ if (!info || info->num_planes > MAX_NUM_PLANES)
+ return 0;
+
+ return info->num_planes;
+}
+
+static int vs_plane_atomic_check(struct drm_plane *plane,
+ struct drm_atomic_state *state)
+{
+ struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+ plane);
+ struct vs_plane *vs_plane = to_vs_plane(plane);
+ struct drm_framebuffer *fb = new_plane_state->fb;
+ struct drm_crtc *crtc = new_plane_state->crtc;
+ struct vs_crtc *vs_crtc = to_vs_crtc(crtc);
+
+ if (!crtc || !fb)
+ return 0;
+
+ //return vs_plane->funcs->check(vs_crtc->dev, vs_plane, new_plane_state);
+ return vs_plane->funcs->check(vs_crtc->dev, plane, state);
+}
+
+static void vs_plane_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);
+ unsigned char i, num_planes;
+ struct drm_framebuffer *fb;
+ struct vs_plane *vs_plane = to_vs_plane(plane);
+ //struct drm_plane_state *state = plane->state;
+ struct vs_crtc *vs_crtc = to_vs_crtc(new_state->crtc);
+ struct vs_plane_state *plane_state = to_vs_plane_state(new_state);
+ //struct drm_format_name_buf *name = &plane_state->status.format_name;
+
+ if (!new_state->fb || !new_state->crtc)
+ return;
+
+ fb = new_state->fb;
+
+ num_planes = vs_get_plane_number(fb);
+
+ for (i = 0; i < num_planes; i++) {
+ struct vs_gem_object *vs_obj;
+
+ vs_obj = vs_fb_get_gem_obj(fb, i);
+ vs_plane->dma_addr[i] = vs_obj->iova + fb->offsets[i];
+ }
+
+ plane_state->status.src = drm_plane_state_src(new_state);
+ plane_state->status.dest = drm_plane_state_dest(new_state);
+
+ vs_plane->funcs->update(vs_crtc->dev, vs_plane, plane, state);
+}
+
+static void vs_plane_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 vs_plane *vs_plane = to_vs_plane(plane);
+ struct vs_crtc *vs_crtc = to_vs_crtc(old_state->crtc);
+
+ vs_plane->funcs->disable(vs_crtc->dev, vs_plane, old_state);
+}
+
+const struct drm_plane_helper_funcs vs_plane_helper_funcs = {
+ .atomic_check = vs_plane_atomic_check,
+ .atomic_update = vs_plane_atomic_update,
+ .atomic_disable = vs_plane_atomic_disable,
+};
+
+static const struct drm_prop_enum_list vs_degamma_mode_enum_list[] = {
+ { VS_DEGAMMA_DISABLE, "disabled" },
+ { VS_DEGAMMA_BT709, "preset degamma for BT709" },
+ { VS_DEGAMMA_BT2020, "preset degamma for BT2020" },
+};
+
+struct vs_plane *vs_plane_create(struct drm_device *drm_dev,
+ struct vs_plane_info *info,
+ unsigned int layer_num,
+ unsigned int possible_crtcs)
+{
+ struct vs_plane *plane;
+ int ret;
+
+ if (!info)
+ return NULL;
+
+ plane = kzalloc(sizeof(*plane), GFP_KERNEL);
+ if (!plane)
+ return NULL;
+
+ ret = drm_universal_plane_init(drm_dev, &plane->base, possible_crtcs,
+ &vs_plane_funcs, info->formats,
+ info->num_formats, info->modifiers, info->type,
+ info->name ? info->name : NULL);
+ if (ret)
+ goto err_free_plane;
+
+ drm_plane_helper_add(&plane->base, &vs_plane_helper_funcs);
+
+ /* Set up the plane properties */
+ if (info->degamma_size) {
+ plane->degamma_mode =
+ drm_property_create_enum(drm_dev, 0,
+ "DEGAMMA_MODE",
+ vs_degamma_mode_enum_list,
+ ARRAY_SIZE(vs_degamma_mode_enum_list));
+
+ if (!plane->degamma_mode)
+ goto error_cleanup_plane;
+
+ drm_object_attach_property(&plane->base.base,
+ plane->degamma_mode,
+ VS_DEGAMMA_DISABLE);
+ }
+
+ if (info->rotation) {
+ ret = drm_plane_create_rotation_property(&plane->base,
+ DRM_MODE_ROTATE_0,
+ info->rotation);
+ if (ret)
+ goto error_cleanup_plane;
+ }
+
+ if (info->blend_mode) {
+ ret = drm_plane_create_blend_mode_property(&plane->base,
+ info->blend_mode);
+ if (ret)
+ goto error_cleanup_plane;
+ ret = drm_plane_create_alpha_property(&plane->base);
+ if (ret)
+ goto error_cleanup_plane;
+ }
+
+ if (info->color_encoding) {
+ ret = drm_plane_create_color_properties(&plane->base,
+ info->color_encoding,
+ BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
+ DRM_COLOR_YCBCR_BT709,
+ DRM_COLOR_YCBCR_LIMITED_RANGE);
+ if (ret)
+ goto error_cleanup_plane;
+ }
+
+ if (info->zpos != 255) {
+ ret = drm_plane_create_zpos_property(&plane->base, info->zpos, 0,
+ layer_num - 1);
+ if (ret)
+ goto error_cleanup_plane;
+ } else {
+ ret = drm_plane_create_zpos_immutable_property(&plane->base,
+ info->zpos);
+ if (ret)
+ goto error_cleanup_plane;
+ }
+
+ if (info->watermark) {
+ plane->watermark_prop = drm_property_create(drm_dev, DRM_MODE_PROP_BLOB,
+ "WATERMARK", 0);
+ if (!plane->watermark_prop)
+ goto error_cleanup_plane;
+
+ drm_object_attach_property(&plane->base.base, plane->watermark_prop, 0);
+ }
+
+ if (info->color_mgmt) {
+ plane->color_mgmt_prop = drm_property_create(drm_dev, DRM_MODE_PROP_BLOB,
+ "COLOR_CONFIG", 0);
+ if (!plane->color_mgmt_prop)
+ goto error_cleanup_plane;
+
+ drm_object_attach_property(&plane->base.base, plane->color_mgmt_prop, 0);
+ }
+
+ if (info->roi) {
+ plane->roi_prop = drm_property_create(drm_dev, DRM_MODE_PROP_BLOB,
+ "ROI", 0);
+ if (!plane->roi_prop)
+ goto error_cleanup_plane;
+
+ drm_object_attach_property(&plane->base.base, plane->roi_prop, 0);
+ }
+
+ return plane;
+
+error_cleanup_plane:
+ drm_plane_cleanup(&plane->base);
+err_free_plane:
+ kfree(plane);
+ return NULL;
+}
diff --git a/drivers/gpu/drm/verisilicon/vs_plane.h b/drivers/gpu/drm/verisilicon/vs_plane.h
new file mode 100644
index 000000000000..76ef3c3de045
--- /dev/null
+++ b/drivers/gpu/drm/verisilicon/vs_plane.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
+ */
+
+#ifndef __VS_PLANE_H__
+#define __VS_PLANE_H__
+
+#include <drm/drm_fourcc.h>
+#include <drm/drm_plane_helper.h>
+
+#include "vs_fb.h"
+#include "vs_type.h"
+
+struct vs_plane;
+
+struct vs_plane_funcs {
+ void (*update)(struct device *dev, struct vs_plane *plane, struct drm_plane *drm_plane,
+ struct drm_atomic_state *state);
+ void (*disable)(struct device *dev, struct vs_plane *plane,
+ struct drm_plane_state *old_state);
+ int (*check)(struct device *dev, struct drm_plane *plane,
+ struct drm_atomic_state *state);
+};
+
+struct vs_plane_status {
+ u32 tile_mode;
+ struct drm_rect src;
+ struct drm_rect dest;
+};
+
+struct vs_plane_state {
+ struct drm_plane_state base;
+ struct vs_plane_status status; /* for debugfs */
+
+ struct drm_property_blob *watermark;
+ struct drm_property_blob *color_mgmt;
+ struct drm_property_blob *roi;
+
+ u32 degamma;
+ bool degamma_changed;
+};
+
+struct vs_plane {
+ struct drm_plane base;
+ u8 id;
+ dma_addr_t dma_addr[MAX_NUM_PLANES];
+
+ struct drm_property *degamma_mode;
+ struct drm_property *watermark_prop;
+ struct drm_property *color_mgmt_prop;
+ struct drm_property *roi_prop;
+
+ const struct vs_plane_funcs *funcs;
+};
+
+void vs_plane_destory(struct drm_plane *plane);
+
+struct vs_plane *vs_plane_create(struct drm_device *drm_dev,
+ struct vs_plane_info *info,
+ unsigned int layer_num,
+ unsigned int possible_crtcs);
+
+static inline struct vs_plane *to_vs_plane(struct drm_plane *plane)
+{
+ return container_of(plane, struct vs_plane, base);
+}
+
+static inline struct vs_plane_state *
+to_vs_plane_state(struct drm_plane_state *state)
+{
+ return container_of(state, struct vs_plane_state, base);
+}
+#endif /* __VS_PLANE_H__ */
--
2.34.1
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