drm: mali-dp: add malidp_crtc_state struct
Add a custom 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: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c
index fab776c..ec1396f 100644
--- a/drivers/gpu/drm/arm/malidp_crtc.c
+++ b/drivers/gpu/drm/arm/malidp_crtc.c
@@ -178,6 +178,52 @@ static const struct drm_crtc_helper_funcs malidp_crtc_helper_funcs = {
.atomic_check = malidp_crtc_atomic_check,
};
+static struct drm_crtc_state *malidp_crtc_duplicate_state(struct drm_crtc *crtc)
+{
+ struct malidp_crtc_state *state;
+
+ if (WARN_ON(!crtc->state))
+ return NULL;
+
+ state = kmalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
+
+ return &state->base;
+}
+
+static void malidp_crtc_reset(struct drm_crtc *crtc)
+{
+ struct malidp_crtc_state *state = NULL;
+
+ if (crtc->state) {
+ state = to_malidp_crtc_state(crtc->state);
+ __drm_atomic_helper_crtc_destroy_state(crtc->state);
+ }
+
+ kfree(state);
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (state) {
+ crtc->state = &state->base;
+ crtc->state->crtc = crtc;
+ }
+}
+
+static void malidp_crtc_destroy_state(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
+{
+ struct malidp_crtc_state *mali_state = NULL;
+
+ if (state) {
+ mali_state = to_malidp_crtc_state(state);
+ __drm_atomic_helper_crtc_destroy_state(state);
+ }
+
+ kfree(mali_state);
+}
+
static int malidp_crtc_enable_vblank(struct drm_crtc *crtc)
{
struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
@@ -201,9 +247,9 @@ static const struct drm_crtc_funcs malidp_crtc_funcs = {
.destroy = drm_crtc_cleanup,
.set_config = drm_atomic_helper_set_config,
.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 = malidp_crtc_reset,
+ .atomic_duplicate_state = malidp_crtc_duplicate_state,
+ .atomic_destroy_state = malidp_crtc_destroy_state,
.enable_vblank = malidp_crtc_enable_vblank,
.disable_vblank = malidp_crtc_disable_vblank,
};