[PATCH 2/4] drm/plane: Allocate planes with drm_universal_plane_alloc()
Thomas Zimmermann
tzimmermann at suse.de
Fri Sep 9 10:59:45 UTC 2022
Provide drm_univeral_plane_alloc(), which allocated an initializes a
plane. Code for non-atomic drivers uses this pattern. Convert it to
the new function. The modeset helpers contain a quirk for handling their
color formats differently. Set the flag outside plane allocation.
The new function is already deprecated to some extend. Drivers should
rather use drmm_univeral_plane_alloc() or drm_universal_plane_init().
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
drivers/gpu/drm/drm_modeset_helper.c | 61 +++++++++++--------------
drivers/gpu/drm/drm_plane.c | 38 +++++++++++++++
drivers/gpu/drm/nouveau/dispnv04/crtc.c | 41 ++++++-----------
include/drm/drm_plane.h | 44 ++++++++++++++++++
4 files changed, 121 insertions(+), 63 deletions(-)
diff --git a/drivers/gpu/drm/drm_modeset_helper.c b/drivers/gpu/drm/drm_modeset_helper.c
index 611dd01fb604..38040eebfa16 100644
--- a/drivers/gpu/drm/drm_modeset_helper.c
+++ b/drivers/gpu/drm/drm_modeset_helper.c
@@ -113,38 +113,6 @@ static const struct drm_plane_funcs primary_plane_funcs = {
.destroy = drm_plane_helper_destroy,
};
-static struct drm_plane *create_primary_plane(struct drm_device *dev)
-{
- struct drm_plane *primary;
- int ret;
-
- primary = kzalloc(sizeof(*primary), GFP_KERNEL);
- if (primary == NULL) {
- DRM_DEBUG_KMS("Failed to allocate primary plane\n");
- return NULL;
- }
-
- /*
- * Remove the format_default field from drm_plane when dropping
- * this helper.
- */
- primary->format_default = true;
-
- /* possible_crtc's will be filled in later by crtc_init */
- ret = drm_universal_plane_init(dev, primary, 0,
- &primary_plane_funcs,
- safe_modeset_formats,
- ARRAY_SIZE(safe_modeset_formats),
- NULL,
- DRM_PLANE_TYPE_PRIMARY, NULL);
- if (ret) {
- kfree(primary);
- primary = NULL;
- }
-
- return primary;
-}
-
/**
* drm_crtc_init - Legacy CRTC initialization function
* @dev: DRM device
@@ -176,10 +144,33 @@ int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
const struct drm_crtc_funcs *funcs)
{
struct drm_plane *primary;
+ int ret;
+
+ /* possible_crtc's will be filled in later by crtc_init */
+ primary = __drm_universal_plane_alloc(dev, sizeof(*primary), 0, 0,
+ &primary_plane_funcs,
+ safe_modeset_formats,
+ ARRAY_SIZE(safe_modeset_formats),
+ NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
+ if (IS_ERR(primary))
+ return PTR_ERR(primary);
- primary = create_primary_plane(dev);
- return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs,
- NULL);
+ /*
+ * Remove the format_default field from drm_plane when dropping
+ * this helper.
+ */
+ primary->format_default = true;
+
+ ret = drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs, NULL);
+ if (ret)
+ goto err_drm_plane_cleanup;
+
+ return 0;
+
+err_drm_plane_cleanup:
+ drm_plane_cleanup(primary);
+ kfree(primary);
+ return ret;
}
EXPORT_SYMBOL(drm_crtc_init);
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 0f14b4d3bb10..33357629a7f5 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -448,6 +448,44 @@ void *__drmm_universal_plane_alloc(struct drm_device *dev, size_t size,
}
EXPORT_SYMBOL(__drmm_universal_plane_alloc);
+void *__drm_universal_plane_alloc(struct drm_device *dev, size_t size,
+ size_t offset, uint32_t possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats, unsigned int format_count,
+ const uint64_t *format_modifiers,
+ enum drm_plane_type type,
+ const char *name, ...)
+{
+ void *container;
+ struct drm_plane *plane;
+ va_list ap;
+ int ret;
+
+ if (drm_WARN_ON(dev, !funcs))
+ return ERR_PTR(-EINVAL);
+
+ container = kzalloc(size, GFP_KERNEL);
+ if (!container)
+ return ERR_PTR(-ENOMEM);
+
+ plane = container + offset;
+
+ va_start(ap, name);
+ ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
+ formats, format_count, format_modifiers,
+ type, name, ap);
+ va_end(ap);
+ if (ret)
+ goto err_kfree;
+
+ return container;
+
+err_kfree:
+ kfree(container);
+ return ERR_PTR(ret);
+}
+EXPORT_SYMBOL(__drm_universal_plane_alloc);
+
int drm_plane_register_all(struct drm_device *dev)
{
unsigned int num_planes = 0;
diff --git a/drivers/gpu/drm/nouveau/dispnv04/crtc.c b/drivers/gpu/drm/nouveau/dispnv04/crtc.c
index 660c4cbc0b3d..6b8a014b5e97 100644
--- a/drivers/gpu/drm/nouveau/dispnv04/crtc.c
+++ b/drivers/gpu/drm/nouveau/dispnv04/crtc.c
@@ -1281,32 +1281,6 @@ static const struct drm_plane_funcs nv04_primary_plane_funcs = {
.destroy = drm_plane_helper_destroy,
};
-static struct drm_plane *
-create_primary_plane(struct drm_device *dev)
-{
- struct drm_plane *primary;
- int ret;
-
- primary = kzalloc(sizeof(*primary), GFP_KERNEL);
- if (primary == NULL) {
- DRM_DEBUG_KMS("Failed to allocate primary plane\n");
- return NULL;
- }
-
- /* possible_crtc's will be filled in later by crtc_init */
- ret = drm_universal_plane_init(dev, primary, 0,
- &nv04_primary_plane_funcs,
- modeset_formats,
- ARRAY_SIZE(modeset_formats), NULL,
- DRM_PLANE_TYPE_PRIMARY, NULL);
- if (ret) {
- kfree(primary);
- primary = NULL;
- }
-
- return primary;
-}
-
static int nv04_crtc_vblank_handler(struct nvif_notify *notify)
{
struct nouveau_crtc *nv_crtc =
@@ -1321,6 +1295,7 @@ nv04_crtc_create(struct drm_device *dev, int crtc_num)
{
struct nouveau_display *disp = nouveau_display(dev);
struct nouveau_crtc *nv_crtc;
+ struct drm_plane *primary;
int ret;
nv_crtc = kzalloc(sizeof(*nv_crtc), GFP_KERNEL);
@@ -1335,8 +1310,18 @@ nv04_crtc_create(struct drm_device *dev, int crtc_num)
nv_crtc->save = nv_crtc_save;
nv_crtc->restore = nv_crtc_restore;
- drm_crtc_init_with_planes(dev, &nv_crtc->base,
- create_primary_plane(dev), NULL,
+ primary = __drm_universal_plane_alloc(dev, sizeof(*primary), 0, 0,
+ &nv04_primary_plane_funcs,
+ modeset_formats,
+ ARRAY_SIZE(modeset_formats), NULL,
+ DRM_PLANE_TYPE_PRIMARY, NULL);
+ if (IS_ERR(primary)) {
+ ret = PTR_ERR(primary);
+ kfree(nv_crtc);
+ return ret;
+ }
+
+ drm_crtc_init_with_planes(dev, &nv_crtc->base, primary, NULL,
&nv04_crtc_funcs, NULL);
drm_crtc_helper_add(&nv_crtc->base, &nv04_crtc_helper_funcs);
drm_mode_crtc_set_gamma_size(&nv_crtc->base, 256);
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 910cb941f3d5..21dfa7f97948 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -809,6 +809,50 @@ void *__drmm_universal_plane_alloc(struct drm_device *dev,
format_count, format_modifiers, \
plane_type, name, ##__VA_ARGS__))
+__printf(10, 11)
+void *__drm_universal_plane_alloc(struct drm_device *dev,
+ size_t size, size_t offset,
+ uint32_t possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats,
+ unsigned int format_count,
+ const uint64_t *format_modifiers,
+ enum drm_plane_type plane_type,
+ const char *name, ...);
+
+/**
+ * drm_universal_plane_alloc - Allocate and initialize an universal plane object
+ * @dev: DRM device
+ * @type: the type of the struct which contains struct &drm_plane
+ * @member: the name of the &drm_plane within @type
+ * @possible_crtcs: bitmask of possible CRTCs
+ * @funcs: callbacks for the new plane
+ * @formats: array of supported formats (DRM_FORMAT\_\*)
+ * @format_count: number of elements in @formats
+ * @format_modifiers: array of struct drm_format modifiers terminated by
+ * DRM_FORMAT_MOD_INVALID
+ * @plane_type: type of plane (overlay, primary, cursor)
+ * @name: printf style format string for the plane name, or NULL for default name
+ *
+ * Allocates and initializes a plane object of type @type. The caller
+ * is responsible for releasing the allocated memory with kfree().
+ *
+ * Drivers are encouraged to use drmm_universal_plane_alloc() instead.
+ *
+ * Drivers that only support the DRM_FORMAT_MOD_LINEAR modifier support may set
+ * @format_modifiers to NULL. The plane will advertise the linear modifier.
+ *
+ * Returns:
+ * Pointer to new plane, or ERR_PTR on failure.
+ */
+#define drm_universal_plane_alloc(dev, type, member, possible_crtcs, funcs, formats, \
+ format_count, format_modifiers, plane_type, name, ...) \
+ ((type *)__drm_universal_plane_alloc(dev, sizeof(type), \
+ offsetof(type, member), \
+ possible_crtcs, funcs, formats, \
+ format_count, format_modifiers, \
+ plane_type, name, ##__VA_ARGS__))
+
/**
* drm_plane_index - find the index of a registered plane
* @plane: plane to find index for
--
2.37.2
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