[PATCH 08/11] drm/komeda: Add komeda_crtc_funcs

[james qian wang (Arm Technology China)]

Added functions:
-  komeda_crtc_reset
-  komeda_crtc_vblank_enable
-  komeda_crtc_vblank_disable

Signed-off-by: James (Qian) Wang <james.qian.w...@arm.com>
---
 .../gpu/drm/arm/display/komeda/komeda_crtc.c  | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
index 6d9fb4626ba5..cc7f67fb08fd 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
@@ -347,6 +347,47 @@ struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
        .mode_fixup     = komeda_crtc_mode_fixup,
 };
 
+static void komeda_crtc_reset(struct drm_crtc *crtc)
+{
+       struct komeda_crtc_state *state;
+
+       if (crtc->state)
+               __drm_atomic_helper_crtc_destroy_state(crtc->state);
+
+       kfree(to_kcrtc_st(crtc->state));
+       crtc->state = NULL;
+
+       state = kzalloc(sizeof(*state), GFP_KERNEL);
+       if (state) {
+               crtc->state = &state->base;
+               crtc->state->crtc = crtc;
+       }
+}
+
+static struct drm_crtc_state *
+komeda_crtc_atomic_duplicate_state(struct drm_crtc *crtc)
+{
+       struct komeda_crtc_state *old = to_kcrtc_st(crtc->state);
+       struct komeda_crtc_state *new;
+
+       new = kzalloc(sizeof(*new), GFP_KERNEL);
+       if (!new)
+               return NULL;
+
+       __drm_atomic_helper_crtc_duplicate_state(crtc, &new->base);
+
+       new->affected_pipes = old->active_pipes;
+
+       return &new->base;
+}
+
+static void komeda_crtc_atomic_destroy_state(struct drm_crtc *crtc,
+                                            struct drm_crtc_state *state)
+{
+       __drm_atomic_helper_crtc_destroy_state(state);
+       kfree(to_kcrtc_st(state));
+}
+
 static int komeda_crtc_vblank_enable(struct drm_crtc *crtc)
 {
        struct komeda_dev *mdev = crtc->dev->dev_private;
@@ -365,6 +406,13 @@ static void komeda_crtc_vblank_disable(struct drm_crtc 
*crtc)
 }
 
 static const struct drm_crtc_funcs komeda_crtc_funcs = {
+       .gamma_set              = drm_atomic_helper_legacy_gamma_set,
+       .destroy                = drm_crtc_cleanup,
+       .set_config             = drm_atomic_helper_set_config,
+       .page_flip              = drm_atomic_helper_page_flip,
+       .reset                  = komeda_crtc_reset,
+       .atomic_duplicate_state = komeda_crtc_atomic_duplicate_state,
+       .atomic_destroy_state   = komeda_crtc_atomic_destroy_state,
        .enable_vblank          = komeda_crtc_vblank_enable,
        .disable_vblank         = komeda_crtc_vblank_disable,
 };
-- 
2.17.1