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Date:   Tue, 22 Jan 2019 11:11:35 +0000
From:   "james qian wang (Arm Technology China)" <james.qian.wang@....com>
To:     Liviu Dudau <Liviu.Dudau@....com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        Brian Starkey <Brian.Starkey@....com>
CC:     "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
        "Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
        "thomas Sun (Arm Technology China)" <thomas.Sun@....com>,
        "Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
        Ayan Halder <Ayan.Halder@....com>,
        "Tiannan Zhu (Arm Technology China)" <Tiannan.Zhu@....com>,
        "Jin Gao (Arm Technology China)" <Jin.Gao@....com>,
        "Yiqi Kang (Arm Technology China)" <Yiqi.Kang@....com>,
        nd <nd@....com>, "malidp@...s.arm.com" <malidp@...s.arm.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "james qian wang (Arm Technology China)" <james.qian.wang@....com>
Subject: [PATCH v2 08/11] drm/komeda: Add komeda_crtc_funcs

From: "james qian wang (Arm Technology China)" <james.qian.wang@....com>

Added functions:
-  komeda_crtc_reset
-  komeda_crtc_vblank_enable
-  komeda_crtc_vblank_disable

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@....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 e19ba9468d31..7adda663b956 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

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