Subclass CRTC state struct to enable storing driver's private
state. This patch only adds the base drm_crtc_state struct and
the atomic functions that handle it.
Signed-off-by: Haneen Mohammed <hamohammed.sa@xxxxxxxxx>
---
drivers/gpu/drm/vkms/vkms_crtc.c | 55 ++++++++++++++++++++++++++++++--
drivers/gpu/drm/vkms/vkms_drv.h | 8 +++++
2 files changed, 60 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
index 84cc05506b09..56206437647d 100644
--- a/drivers/gpu/drm/vkms/vkms_crtc.c
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -10,13 +10,62 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
+static void vkms_crtc_reset(struct drm_crtc *crtc)
+{
+ struct vkms_crtc_state *state = NULL;
+
+ if (crtc->state) {
+ state = container_of(crtc->state, struct vkms_crtc_state,
+ base);
+ __drm_atomic_helper_crtc_destroy_state(crtc->state);
+ kfree(state);
+ crtc->state = NULL;
+ }
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return;
+
+ crtc->state = &state->base;
+ crtc->state->crtc = crtc;
+}
+
+static struct drm_crtc_state *
+vkms_crtc_duplicate_state(struct drm_crtc *crtc)
+{
+ struct vkms_crtc_state *state;
+
+ if (WARN_ON(!crtc->state))
+ return NULL;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
+
+ return &state->base;
+}
+
+static void vkms_crtc_destroy_state(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
+{
+ struct vkms_crtc_state *vkms_state;
+
+ vkms_state = container_of(state, struct vkms_crtc_state, base);
+
+ __drm_atomic_helper_crtc_destroy_state(state);
+ kfree(vkms_state);
+}
+
static const struct drm_crtc_funcs vkms_crtc_funcs = {
.set_config = drm_atomic_helper_set_config,
.destroy = drm_crtc_cleanup,
.page_flip = drm_atomic_helper_page_flip,
- .reset = drm_atomic_helper_crtc_reset,
- .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+
+ .reset = vkms_crtc_reset,
+ .atomic_duplicate_state = vkms_crtc_duplicate_state,
+ .atomic_destroy_state = vkms_crtc_destroy_state,
};
static int vkms_crtc_atomic_check(struct drm_crtc *crtc,
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index d339a8108d85..61e367d32308 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -19,6 +19,14 @@ static const u32 vkms_formats[] = {
DRM_FORMAT_XRGB8888,
};
+/**
+ * vkms_crtc_state - Driver specific CRTC state
+ * @base: base CRTC state
+ */
+struct vkms_crtc_state {
+ struct drm_crtc_state base;
+};
+
struct vkms_output {
struct drm_crtc crtc;
struct drm_encoder encoder;
--
2.17.1
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