[Intel-gfx] [PATCH 3/3] drm/plane: Move drm_plane_enable_fb_damage_clips into core
Daniel Vetter
daniel.vetter at ffwll.ch
Wed Jul 21 13:30:14 UTC 2021
We're trying to have a fairly strict split between core functionality
that defines the uapi, including the docs, and the helper functions to
implement it.
Move drm_plane_enable_fb_damage_clips and associated kerneldoc into
drm_plane from drm_damage_helper.c to fix this.
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
Cc: José Roberto de Souza <jose.souza at intel.com>
Cc: Hans de Goede <hdegoede at redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Maxime Ripard <mripard at kernel.org>
Cc: Thomas Zimmermann <tzimmermann at suse.de>
Cc: David Airlie <airlied at linux.ie>
Cc: Daniel Vetter <daniel at ffwll.ch>
---
Documentation/gpu/drm-kms.rst | 4 +--
drivers/gpu/drm/drm_damage_helper.c | 54 -----------------------------
drivers/gpu/drm/drm_plane.c | 54 +++++++++++++++++++++++++++++
include/drm/drm_damage_helper.h | 1 -
include/drm/drm_plane.h | 3 +-
5 files changed, 58 insertions(+), 58 deletions(-)
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index 87e5023e3f55..7399f497e7e2 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -508,8 +508,8 @@ Plane Composition Properties
Damage Tracking Properties
--------------------------
-.. kernel-doc:: drivers/gpu/drm/drm_damage_helper.c
- :doc: overview
+.. kernel-doc:: drivers/gpu/drm/drm_plane.c
+ :doc: damage tracking
Color Management Properties
---------------------------
diff --git a/drivers/gpu/drm/drm_damage_helper.c b/drivers/gpu/drm/drm_damage_helper.c
index eb69b7123af5..245959dad7bb 100644
--- a/drivers/gpu/drm/drm_damage_helper.c
+++ b/drivers/gpu/drm/drm_damage_helper.c
@@ -34,44 +34,6 @@
#include <drm/drm_damage_helper.h>
#include <drm/drm_device.h>
-/**
- * DOC: overview
- *
- * FB_DAMAGE_CLIPS is an optional plane property which provides a means to
- * specify a list of damage rectangles on a plane in framebuffer coordinates of
- * the framebuffer attached to the plane. In current context damage is the area
- * of plane framebuffer that has changed since last plane update (also called
- * page-flip), irrespective of whether currently attached framebuffer is same as
- * framebuffer attached during last plane update or not.
- *
- * FB_DAMAGE_CLIPS is a hint to kernel which could be helpful for some drivers
- * to optimize internally especially for virtual devices where each framebuffer
- * change needs to be transmitted over network, usb, etc.
- *
- * Since FB_DAMAGE_CLIPS is a hint so it is an optional property. User-space can
- * ignore damage clips property and in that case driver will do a full plane
- * update. In case damage clips are provided then it is guaranteed that the area
- * inside damage clips will be updated to plane. For efficiency driver can do
- * full update or can update more than specified in damage clips. Since driver
- * is free to read more, user-space must always render the entire visible
- * framebuffer. Otherwise there can be corruptions. Also, if a user-space
- * provides damage clips which doesn't encompass the actual damage to
- * framebuffer (since last plane update) can result in incorrect rendering.
- *
- * FB_DAMAGE_CLIPS is a blob property with the layout of blob data is simply an
- * array of &drm_mode_rect. Unlike plane &drm_plane_state.src coordinates,
- * damage clips are not in 16.16 fixed point. Similar to plane src in
- * framebuffer, damage clips cannot be negative. In damage clip, x1/y1 are
- * inclusive and x2/y2 are exclusive. While kernel does not error for overlapped
- * damage clips, it is strongly discouraged.
- *
- * Drivers that are interested in damage interface for plane should enable
- * FB_DAMAGE_CLIPS property by calling drm_plane_enable_fb_damage_clips().
- * Drivers implementing damage can use drm_atomic_helper_damage_iter_init() and
- * drm_atomic_helper_damage_iter_next() helper iterator function to get damage
- * rectangles clipped to &drm_plane_state.src.
- */
-
static void convert_clip_rect_to_rect(const struct drm_clip_rect *src,
struct drm_mode_rect *dest,
uint32_t num_clips, uint32_t src_inc)
@@ -87,22 +49,6 @@ static void convert_clip_rect_to_rect(const struct drm_clip_rect *src,
}
}
-/**
- * drm_plane_enable_fb_damage_clips - Enables plane fb damage clips property.
- * @plane: Plane on which to enable damage clips property.
- *
- * This function lets driver to enable the damage clips property on a plane.
- */
-void drm_plane_enable_fb_damage_clips(struct drm_plane *plane)
-{
- struct drm_device *dev = plane->dev;
- struct drm_mode_config *config = &dev->mode_config;
-
- drm_object_attach_property(&plane->base, config->prop_fb_damage_clips,
- 0);
-}
-EXPORT_SYMBOL(drm_plane_enable_fb_damage_clips);
-
/**
* drm_atomic_helper_check_plane_damage - Verify plane damage on atomic_check.
* @state: The driver state object.
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 40f099c67a8d..b68d06f536fa 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -1397,6 +1397,60 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
return ret;
}
+/**
+ * DOC: damage tracking
+ *
+ * FB_DAMAGE_CLIPS is an optional plane property which provides a means to
+ * specify a list of damage rectangles on a plane in framebuffer coordinates of
+ * the framebuffer attached to the plane. In current context damage is the area
+ * of plane framebuffer that has changed since last plane update (also called
+ * page-flip), irrespective of whether currently attached framebuffer is same as
+ * framebuffer attached during last plane update or not.
+ *
+ * FB_DAMAGE_CLIPS is a hint to kernel which could be helpful for some drivers
+ * to optimize internally especially for virtual devices where each framebuffer
+ * change needs to be transmitted over network, usb, etc.
+ *
+ * Since FB_DAMAGE_CLIPS is a hint so it is an optional property. User-space can
+ * ignore damage clips property and in that case driver will do a full plane
+ * update. In case damage clips are provided then it is guaranteed that the area
+ * inside damage clips will be updated to plane. For efficiency driver can do
+ * full update or can update more than specified in damage clips. Since driver
+ * is free to read more, user-space must always render the entire visible
+ * framebuffer. Otherwise there can be corruptions. Also, if a user-space
+ * provides damage clips which doesn't encompass the actual damage to
+ * framebuffer (since last plane update) can result in incorrect rendering.
+ *
+ * FB_DAMAGE_CLIPS is a blob property with the layout of blob data is simply an
+ * array of &drm_mode_rect. Unlike plane &drm_plane_state.src coordinates,
+ * damage clips are not in 16.16 fixed point. Similar to plane src in
+ * framebuffer, damage clips cannot be negative. In damage clip, x1/y1 are
+ * inclusive and x2/y2 are exclusive. While kernel does not error for overlapped
+ * damage clips, it is strongly discouraged.
+ *
+ * Drivers that are interested in damage interface for plane should enable
+ * FB_DAMAGE_CLIPS property by calling drm_plane_enable_fb_damage_clips().
+ * Drivers implementing damage can use drm_atomic_helper_damage_iter_init() and
+ * drm_atomic_helper_damage_iter_next() helper iterator function to get damage
+ * rectangles clipped to &drm_plane_state.src.
+ */
+
+/**
+ * drm_plane_enable_fb_damage_clips - Enables plane fb damage clips property.
+ * @plane: Plane on which to enable damage clips property.
+ *
+ * This function lets driver to enable the damage clips property on a plane.
+ */
+void drm_plane_enable_fb_damage_clips(struct drm_plane *plane)
+{
+ struct drm_device *dev = plane->dev;
+ struct drm_mode_config *config = &dev->mode_config;
+
+ drm_object_attach_property(&plane->base, config->prop_fb_damage_clips,
+ 0);
+}
+EXPORT_SYMBOL(drm_plane_enable_fb_damage_clips);
+
/**
* drm_plane_get_damage_clips_count - Returns damage clips count.
* @state: Plane state.
diff --git a/include/drm/drm_damage_helper.h b/include/drm/drm_damage_helper.h
index 1ae8bce6a5ce..effda42cce31 100644
--- a/include/drm/drm_damage_helper.h
+++ b/include/drm/drm_damage_helper.h
@@ -64,7 +64,6 @@ struct drm_atomic_helper_damage_iter {
bool full_update;
};
-void drm_plane_enable_fb_damage_clips(struct drm_plane *plane);
void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state,
struct drm_plane_state *plane_state);
int drm_atomic_helper_dirtyfb(struct drm_framebuffer *fb,
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index a2684aab8372..fed97e35626f 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -897,9 +897,10 @@ static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
bool drm_any_plane_has_format(struct drm_device *dev,
u32 format, u64 modifier);
+
+void drm_plane_enable_fb_damage_clips(struct drm_plane *plane);
unsigned int
drm_plane_get_damage_clips_count(const struct drm_plane_state *state);
-
struct drm_mode_rect *
drm_plane_get_damage_clips(const struct drm_plane_state *state);
--
2.32.0
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