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drm/vkms: Subclass plane state

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Subclass plane state struct to enable storing driver's private
state. This patch only adds the base drm_plane_state struct and
the atomic functions that handle it.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/c35c512c8987a7255aac94a9eb985d2dd3e6c90d.1533171495.git.hamohammed.sa@gmail.com
This commit is contained in:
Haneen Mohammed 2018-08-02 04:08:22 +03:00 committed by Sean Paul
parent 570913e0b1
commit 3e77c4d022
2 changed files with 55 additions and 3 deletions
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11
drivers/gpu/drm/vkms/vkms_drv.h
View File

@ -20,6 +20,14 @@ static const u32 vkms_formats[] = {
DRM_FORMAT_XRGB8888,
};
/**
* vkms_plane_state - Driver specific plane state
* @base: base plane state
*/
struct vkms_plane_state {
struct drm_plane_state base;
};
/**
* vkms_crtc_state - Driver specific CRTC state
* @base: base CRTC state
@ -63,6 +71,9 @@ struct vkms_gem_object {
#define to_vkms_crtc_state(target)\
container_of(target, struct vkms_crtc_state, base)
#define to_vkms_plane_state(target)\
container_of(target, struct vkms_plane_state, base)
/* CRTC */
int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_plane *primary, struct drm_plane *cursor);

47
drivers/gpu/drm/vkms/vkms_plane.c
View File

@ -12,13 +12,54 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
static struct drm_plane_state *
vkms_plane_duplicate_state(struct drm_plane *plane)
{
struct vkms_plane_state *vkms_state;
vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL);
if (!vkms_state)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane,
&vkms_state->base);
return &vkms_state->base;
}
static void vkms_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vkms_plane_state *vkms_state = to_vkms_plane_state(old_state);
__drm_atomic_helper_plane_destroy_state(old_state);
kfree(vkms_state);
}
static void vkms_plane_reset(struct drm_plane *plane)
{
struct vkms_plane_state *vkms_state;
if (plane->state)
vkms_plane_destroy_state(plane, plane->state);
vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL);
if (!vkms_state) {
DRM_ERROR("Cannot allocate vkms_plane_state\n");
return;
}
plane->state = &vkms_state->base;
plane->state->plane = plane;
}
static const struct drm_plane_funcs vkms_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_plane_cleanup,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.reset = vkms_plane_reset,
.atomic_duplicate_state = vkms_plane_duplicate_state,
.atomic_destroy_state = vkms_plane_destroy_state,
};
static void vkms_primary_plane_update(struct drm_plane *plane,