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Subject[PATCH v4 7/9] drm/komeda: Attach komeda_dev to DRM-KMS
Date
From: "james qian wang (Arm Technology China)" <james.qian.wang@arm.com>

Add komeda_kms abstracton to attach komeda_dev to DRM-KMS
CRTC: according to the komeda_pipeline
PLANE: according to komeda_layer (layer input pipeline)
PRIVATE_OBJS: komeda_pipeline/component all will be treat as private_objs

komeda_kms is for connecting DRM-KMS and komeda_dev, like reporting the
kms object properties according to the komeda_dev, and pass/convert KMS's
requirement to komeda_dev.

Changes in v4:
- Set drm_atomic_helper_check as mode_config->atomic_check.

Changes in v3:
- Fixed style problem found by checkpatch.pl --strict.

Changes in v2:
- Unified abbreviation of "pipeline" to "pipe".

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
---
drivers/gpu/drm/arm/display/komeda/Makefile | 6 +-
.../gpu/drm/arm/display/komeda/komeda_crtc.c | 106 +++++++++++
.../gpu/drm/arm/display/komeda/komeda_drv.c | 12 ++
.../gpu/drm/arm/display/komeda/komeda_kms.c | 169 ++++++++++++++++++
.../gpu/drm/arm/display/komeda/komeda_kms.h | 113 ++++++++++++
.../drm/arm/display/komeda/komeda_pipeline.h | 3 +
.../gpu/drm/arm/display/komeda/komeda_plane.c | 109 +++++++++++
.../arm/display/komeda/komeda_private_obj.c | 88 +++++++++
8 files changed, 605 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_kms.c
create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_kms.h
create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_plane.c
create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c

diff --git a/drivers/gpu/drm/arm/display/komeda/Makefile b/drivers/gpu/drm/arm/display/komeda/Makefile
index 25beae900ed2..1b875e5dc0f6 100644
--- a/drivers/gpu/drm/arm/display/komeda/Makefile
+++ b/drivers/gpu/drm/arm/display/komeda/Makefile
@@ -9,7 +9,11 @@ komeda-y := \
komeda_dev.o \
komeda_format_caps.o \
komeda_pipeline.o \
- komeda_framebuffer.o
+ komeda_framebuffer.o \
+ komeda_kms.o \
+ komeda_crtc.o \
+ komeda_plane.o \
+ komeda_private_obj.o

komeda-y += \
d71/d71_dev.o
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
new file mode 100644
index 000000000000..5bb5a55f6b31
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#include <linux/clk.h>
+#include <linux/spinlock.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <linux/pm_runtime.h>
+#include "komeda_dev.h"
+#include "komeda_kms.h"
+
+struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
+};
+
+static const struct drm_crtc_funcs komeda_crtc_funcs = {
+};
+
+int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
+ struct komeda_dev *mdev)
+{
+ struct komeda_crtc *crtc;
+ struct komeda_pipeline *master;
+ char str[16];
+ int i;
+
+ kms->n_crtcs = 0;
+
+ for (i = 0; i < mdev->n_pipelines; i++) {
+ crtc = &kms->crtcs[kms->n_crtcs];
+ master = mdev->pipelines[i];
+
+ crtc->master = master;
+ crtc->slave = NULL;
+
+ if (crtc->slave)
+ sprintf(str, "pipe-%d", crtc->slave->id);
+ else
+ sprintf(str, "None");
+
+ DRM_INFO("crtc%d: master(pipe-%d) slave(%s) output: %s.\n",
+ kms->n_crtcs, master->id, str,
+ master->of_output_dev ?
+ master->of_output_dev->full_name : "None");
+
+ kms->n_crtcs++;
+ }
+
+ return 0;
+}
+
+static struct drm_plane *
+get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc)
+{
+ struct komeda_plane *kplane;
+ struct drm_plane *plane;
+
+ drm_for_each_plane(plane, &kms->base) {
+ if (plane->type != DRM_PLANE_TYPE_PRIMARY)
+ continue;
+
+ kplane = to_kplane(plane);
+ /* only master can be primary */
+ if (kplane->layer->base.pipeline == crtc->master)
+ return plane;
+ }
+
+ return NULL;
+}
+
+static int komeda_crtc_add(struct komeda_kms_dev *kms,
+ struct komeda_crtc *kcrtc)
+{
+ struct drm_crtc *crtc = &kcrtc->base;
+ int err;
+
+ err = drm_crtc_init_with_planes(&kms->base, crtc,
+ get_crtc_primary(kms, kcrtc), NULL,
+ &komeda_crtc_funcs, NULL);
+ if (err)
+ return err;
+
+ drm_crtc_helper_add(crtc, &komeda_crtc_helper_funcs);
+ drm_crtc_vblank_reset(crtc);
+
+ crtc->port = kcrtc->master->of_output_port;
+
+ return 0;
+}
+
+int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
+{
+ int i, err;
+
+ for (i = 0; i < kms->n_crtcs; i++) {
+ err = komeda_crtc_add(kms, &kms->crtcs[i]);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
index dd386d82d143..2bdd189b041d 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
@@ -10,9 +10,11 @@
#include <linux/component.h>
#include <drm/drm_of.h>
#include "komeda_dev.h"
+#include "komeda_kms.h"

struct komeda_drv {
struct komeda_dev *mdev;
+ struct komeda_kms_dev *kms;
};

static void komeda_unbind(struct device *dev)
@@ -22,6 +24,7 @@ static void komeda_unbind(struct device *dev)
if (!mdrv)
return;

+ komeda_kms_detach(mdrv->kms);
komeda_dev_destroy(mdrv->mdev);

dev_set_drvdata(dev, NULL);
@@ -43,10 +46,19 @@ static int komeda_bind(struct device *dev)
goto free_mdrv;
}

+ mdrv->kms = komeda_kms_attach(mdrv->mdev);
+ if (IS_ERR(mdrv->kms)) {
+ err = PTR_ERR(mdrv->kms);
+ goto destroy_mdev;
+ }
+
dev_set_drvdata(dev, mdrv);

return 0;

+destroy_mdev:
+ komeda_dev_destroy(mdrv->mdev);
+
free_mdrv:
devm_kfree(dev, mdrv);
return err;
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
new file mode 100644
index 000000000000..f41b20235130
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#include <linux/component.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <linux/interrupt.h>
+#include "komeda_dev.h"
+#include "komeda_kms.h"
+#include "komeda_framebuffer.h"
+
+DEFINE_DRM_GEM_CMA_FOPS(komeda_cma_fops);
+
+static int komeda_gem_cma_dumb_create(struct drm_file *file,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ u32 alignment = 16; /* TODO get alignment from dev */
+
+ args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8),
+ alignment);
+
+ return drm_gem_cma_dumb_create_internal(file, dev, args);
+}
+
+static struct drm_driver komeda_kms_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC |
+ DRIVER_PRIME,
+ .lastclose = drm_fb_helper_lastclose,
+ .gem_free_object_unlocked = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+ .dumb_create = komeda_gem_cma_dumb_create,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+ .fops = &komeda_cma_fops,
+ .name = "komeda",
+ .desc = "Arm Komeda Display Processor driver",
+ .date = "20181101",
+ .major = 0,
+ .minor = 1,
+};
+
+static void komeda_kms_commit_tail(struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = old_state->dev;
+
+ drm_atomic_helper_commit_modeset_disables(dev, old_state);
+
+ drm_atomic_helper_commit_planes(dev, old_state, 0);
+
+ drm_atomic_helper_commit_modeset_enables(dev, old_state);
+
+ drm_atomic_helper_wait_for_flip_done(dev, old_state);
+
+ drm_atomic_helper_commit_hw_done(old_state);
+
+ drm_atomic_helper_cleanup_planes(dev, old_state);
+}
+
+static const struct drm_mode_config_helper_funcs komeda_mode_config_helpers = {
+ .atomic_commit_tail = komeda_kms_commit_tail,
+};
+
+static const struct drm_mode_config_funcs komeda_mode_config_funcs = {
+ .fb_create = komeda_fb_create,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+static void komeda_kms_mode_config_init(struct komeda_kms_dev *kms,
+ struct komeda_dev *mdev)
+{
+ struct drm_mode_config *config = &kms->base.mode_config;
+
+ drm_mode_config_init(&kms->base);
+
+ komeda_kms_setup_crtcs(kms, mdev);
+
+ /* Get value from dev */
+ config->min_width = 0;
+ config->min_height = 0;
+ config->max_width = 4096;
+ config->max_height = 4096;
+ config->allow_fb_modifiers = false;
+
+ config->funcs = &komeda_mode_config_funcs;
+ config->helper_private = &komeda_mode_config_helpers;
+}
+
+struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
+{
+ struct komeda_kms_dev *kms = kzalloc(sizeof(*kms), GFP_KERNEL);
+ struct drm_device *drm;
+ int err;
+
+ if (!kms)
+ return ERR_PTR(-ENOMEM);
+
+ drm = &kms->base;
+ err = drm_dev_init(drm, &komeda_kms_driver, mdev->dev);
+ if (err)
+ goto free_kms;
+
+ drm->dev_private = mdev;
+
+ komeda_kms_mode_config_init(kms, mdev);
+
+ err = komeda_kms_add_private_objs(kms, mdev);
+ if (err)
+ goto cleanup_mode_config;
+
+ err = komeda_kms_add_planes(kms, mdev);
+ if (err)
+ goto cleanup_mode_config;
+
+ err = drm_vblank_init(drm, kms->n_crtcs);
+ if (err)
+ goto cleanup_mode_config;
+
+ err = komeda_kms_add_crtcs(kms, mdev);
+ if (err)
+ goto cleanup_mode_config;
+
+ err = component_bind_all(mdev->dev, kms);
+ if (err)
+ goto cleanup_mode_config;
+
+ drm_mode_config_reset(drm);
+
+ err = drm_dev_register(drm, 0);
+ if (err)
+ goto uninstall_irq;
+
+ return kms;
+
+uninstall_irq:
+ drm_irq_uninstall(drm);
+cleanup_mode_config:
+ drm_mode_config_cleanup(drm);
+free_kms:
+ kfree(kms);
+ return ERR_PTR(err);
+}
+
+void komeda_kms_detach(struct komeda_kms_dev *kms)
+{
+ struct drm_device *drm = &kms->base;
+ struct komeda_dev *mdev = drm->dev_private;
+
+ drm_dev_unregister(drm);
+ component_unbind_all(mdev->dev, drm);
+ komeda_kms_cleanup_private_objs(mdev);
+ drm_mode_config_cleanup(drm);
+ drm->dev_private = NULL;
+ drm_dev_put(drm);
+}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
new file mode 100644
index 000000000000..f13666004a42
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#ifndef _KOMEDA_KMS_H_
+#define _KOMEDA_KMS_H_
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_writeback.h>
+
+/** struct komeda_plane - komeda instance of drm_plane */
+struct komeda_plane {
+ /** @base: &drm_plane */
+ struct drm_plane base;
+ /**
+ * @layer:
+ *
+ * represents available layer input pipelines for this plane.
+ *
+ * NOTE:
+ * the layer is not for a specific Layer, but indicate a group of
+ * Layers with same capabilities.
+ */
+ struct komeda_layer *layer;
+};
+
+/**
+ * struct komeda_plane_state
+ *
+ * The plane_state can be split into two data flow (left/right) and handled
+ * by two layers &komeda_plane.layer and &komeda_plane.layer.right
+ */
+struct komeda_plane_state {
+ /** @base: &drm_plane_state */
+ struct drm_plane_state base;
+
+ /* private properties */
+};
+
+/**
+ * struct komeda_wb_connector
+ */
+struct komeda_wb_connector {
+ /** @base: &drm_writeback_connector */
+ struct drm_writeback_connector base;
+
+ /** @wb_layer: represents associated writeback pipeline of komeda */
+ struct komeda_layer *wb_layer;
+};
+
+/**
+ * struct komeda_crtc
+ */
+struct komeda_crtc {
+ /** @base: &drm_crtc */
+ struct drm_crtc base;
+ /** @master: only master has display output */
+ struct komeda_pipeline *master;
+ /**
+ * @slave: optional
+ *
+ * Doesn't have its own display output, the handled data flow will
+ * merge into the master.
+ */
+ struct komeda_pipeline *slave;
+};
+
+/** struct komeda_crtc_state */
+struct komeda_crtc_state {
+ /** @base: &drm_crtc_state */
+ struct drm_crtc_state base;
+
+ /* private properties */
+
+ /* computed state which are used by validate/check */
+ u32 affected_pipes;
+ u32 active_pipes;
+};
+
+/** struct komeda_kms_dev - for gather KMS related things */
+struct komeda_kms_dev {
+ /** @base: &drm_device */
+ struct drm_device base;
+
+ /** @n_crtcs: valid numbers of crtcs in &komeda_kms_dev.crtcs */
+ int n_crtcs;
+ /** @crtcs: crtcs list */
+ struct komeda_crtc crtcs[KOMEDA_MAX_PIPELINES];
+};
+
+#define to_kplane(p) container_of(p, struct komeda_plane, base)
+#define to_kplane_st(p) container_of(p, struct komeda_plane_state, base)
+#define to_kconn(p) container_of(p, struct komeda_wb_connector, base)
+#define to_kcrtc(p) container_of(p, struct komeda_crtc, base)
+#define to_kcrtc_st(p) container_of(p, struct komeda_crtc_state, base)
+#define to_kdev(p) container_of(p, struct komeda_kms_dev, base)
+
+int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
+
+int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
+int komeda_kms_add_planes(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
+int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
+ struct komeda_dev *mdev);
+void komeda_kms_cleanup_private_objs(struct komeda_dev *mdev);
+
+struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev);
+void komeda_kms_detach(struct komeda_kms_dev *kms);
+
+#endif /*_KOMEDA_KMS_H_*/
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index 35dc71acd7ec..8c950bc8ae96 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -331,6 +331,9 @@ struct komeda_pipeline_state {
#define to_improc_st(c) container_of(c, struct komeda_improc_state, base)
#define to_ctrlr_st(c) container_of(c, struct komeda_timing_ctrlr_state, base)

+#define priv_to_comp_st(o) container_of(o, struct komeda_component_state, obj)
+#define priv_to_pipe_st(o) container_of(o, struct komeda_pipeline_state, obj)
+
/* pipeline APIs */
struct komeda_pipeline *
komeda_pipeline_add(struct komeda_dev *mdev, size_t size,
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
new file mode 100644
index 000000000000..0a4953a9a909
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_plane_helper.h>
+#include "komeda_dev.h"
+#include "komeda_kms.h"
+
+static const struct drm_plane_helper_funcs komeda_plane_helper_funcs = {
+};
+
+static void komeda_plane_destroy(struct drm_plane *plane)
+{
+ drm_plane_cleanup(plane);
+
+ kfree(to_kplane(plane));
+}
+
+static const struct drm_plane_funcs komeda_plane_funcs = {
+};
+
+/* for komeda, which is pipeline can be share between crtcs */
+static u32 get_possible_crtcs(struct komeda_kms_dev *kms,
+ struct komeda_pipeline *pipe)
+{
+ struct komeda_crtc *crtc;
+ u32 possible_crtcs = 0;
+ int i;
+
+ for (i = 0; i < kms->n_crtcs; i++) {
+ crtc = &kms->crtcs[i];
+
+ if ((pipe == crtc->master) || (pipe == crtc->slave))
+ possible_crtcs |= BIT(i);
+ }
+
+ return possible_crtcs;
+}
+
+/* use Layer0 as primary */
+static u32 get_plane_type(struct komeda_kms_dev *kms,
+ struct komeda_component *c)
+{
+ bool is_primary = (c->id == KOMEDA_COMPONENT_LAYER0);
+
+ return is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
+}
+
+static int komeda_plane_add(struct komeda_kms_dev *kms,
+ struct komeda_layer *layer)
+{
+ struct komeda_dev *mdev = kms->base.dev_private;
+ struct komeda_component *c = &layer->base;
+ struct komeda_plane *kplane;
+ struct drm_plane *plane;
+ u32 *formats, n_formats = 0;
+ int err;
+
+ kplane = kzalloc(sizeof(*kplane), GFP_KERNEL);
+ if (!kplane)
+ return -ENOMEM;
+
+ plane = &kplane->base;
+ kplane->layer = layer;
+
+ formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl,
+ layer->layer_type, &n_formats);
+
+ err = drm_universal_plane_init(&kms->base, plane,
+ get_possible_crtcs(kms, c->pipeline),
+ &komeda_plane_funcs,
+ formats, n_formats, NULL,
+ get_plane_type(kms, c),
+ "%s", c->name);
+
+ komeda_put_fourcc_list(formats);
+
+ if (err)
+ goto cleanup;
+
+ drm_plane_helper_add(plane, &komeda_plane_helper_funcs);
+
+ return 0;
+cleanup:
+ komeda_plane_destroy(plane);
+ return err;
+}
+
+int komeda_kms_add_planes(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
+{
+ struct komeda_pipeline *pipe;
+ int i, j, err;
+
+ for (i = 0; i < mdev->n_pipelines; i++) {
+ pipe = mdev->pipelines[i];
+
+ for (j = 0; j < pipe->n_layers; j++) {
+ err = komeda_plane_add(kms, pipe->layers[j]);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c b/drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c
new file mode 100644
index 000000000000..9edfd6ab0c12
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#include "komeda_dev.h"
+#include "komeda_kms.h"
+
+static struct drm_private_state *
+komeda_pipeline_atomic_duplicate_state(struct drm_private_obj *obj)
+{
+ struct komeda_pipeline_state *st;
+
+ st = kmemdup(obj->state, sizeof(*st), GFP_KERNEL);
+ if (!st)
+ return NULL;
+
+ st->active_comps = 0;
+
+ __drm_atomic_helper_private_obj_duplicate_state(obj, &st->obj);
+
+ return &st->obj;
+}
+
+static void
+komeda_pipeline_atomic_destroy_state(struct drm_private_obj *obj,
+ struct drm_private_state *state)
+{
+ kfree(priv_to_pipe_st(state));
+}
+
+static const struct drm_private_state_funcs komeda_pipeline_obj_funcs = {
+ .atomic_duplicate_state = komeda_pipeline_atomic_duplicate_state,
+ .atomic_destroy_state = komeda_pipeline_atomic_destroy_state,
+};
+
+static int komeda_pipeline_obj_add(struct komeda_kms_dev *kms,
+ struct komeda_pipeline *pipe)
+{
+ struct komeda_pipeline_state *st;
+
+ st = kzalloc(sizeof(*st), GFP_KERNEL);
+ if (!st)
+ return -ENOMEM;
+
+ st->pipe = pipe;
+ drm_atomic_private_obj_init(&pipe->obj, &st->obj,
+ &komeda_pipeline_obj_funcs);
+
+ return 0;
+}
+
+int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
+ struct komeda_dev *mdev)
+{
+ struct komeda_pipeline *pipe;
+ int i, err;
+
+ for (i = 0; i < mdev->n_pipelines; i++) {
+ pipe = mdev->pipelines[i];
+
+ err = komeda_pipeline_obj_add(kms, pipe);
+ if (err)
+ return err;
+
+ /* Add component */
+ }
+
+ return 0;
+}
+
+void komeda_kms_cleanup_private_objs(struct komeda_dev *mdev)
+{
+ struct komeda_pipeline *pipe;
+ struct komeda_component *c;
+ int i, id;
+
+ for (i = 0; i < mdev->n_pipelines; i++) {
+ pipe = mdev->pipelines[i];
+ dp_for_each_set_bit(id, pipe->avail_comps) {
+ c = komeda_pipeline_get_component(pipe, id);
+
+ drm_atomic_private_obj_fini(&c->obj);
+ }
+ drm_atomic_private_obj_fini(&pipe->obj);
+ }
+}
--
2.17.1
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