linux-kernel - [PATCH 01/11] drm/komeda: Add komeda_build_display_data

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Message-ID: <20181224092435.2792-2-james.qian.wang@arm.com>
Date:   Mon, 24 Dec 2018 09:25:25 +0000
From:   "james qian wang (Arm Technology China)" <james.qian.wang@....com>
To:     Liviu Dudau <Liviu.Dudau@....com>
CC:     "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
        Brian Starkey <Brian.Starkey@....com>,
        "Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
        "thomas Sun (Arm Technology China)" <thomas.Sun@....com>,
        Alexandru-Cosmin Gheorghe <Alexandru-Cosmin.Gheorghe@....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>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "yamada.masahiro@...ionext.com" <yamada.masahiro@...ionext.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "maxime.ripard@...tlin.com" <maxime.ripard@...tlin.com>,
        "sean@...rly.run" <sean@...rly.run>,
        "james qian wang (Arm Technology China)" <james.qian.wang@....com>
Subject: [PATCH 01/11] drm/komeda: Add komeda_build_display_data_flow

This function builds a display output pipeline according to crtc_state.
And this change only added single pipeline support, the dual pipeline with
slave enabled data flow support will be added in the following change.

Signed-off-by: James (Qian) Wang <james.qian.wang@....com>
---
 .../drm/arm/display/komeda/komeda_pipeline.h  |  3 +
 .../display/komeda/komeda_pipeline_state.c    | 72 +++++++++++++++++++
 2 files changed, 75 insertions(+)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index c78edfc6ed5b..bc4ed1513348 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -408,11 +408,14 @@ void komeda_component_destroy(struct komeda_dev *mdev,
 
 struct komeda_plane_state;
 struct komeda_crtc_state;
+struct komeda_crtc;
 
 int komeda_build_layer_data_flow(struct komeda_layer *layer,
 				 struct komeda_component_output *dflow,
 				 struct komeda_plane_state *kplane_st,
 				 struct komeda_crtc_state *kcrtc_st,
 				 struct komeda_layer_viewport *vp);
+int komeda_build_display_data_flow(struct komeda_crtc *kcrtc,
+				   struct komeda_crtc_state *kcrtc_st);
 
 #endif /* _KOMEDA_PIPELINE_H_*/
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
index b98163211cfd..05386e9d1749 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
@@ -380,6 +380,51 @@ int komeda_compiz_validate(struct komeda_compiz *compiz,
 	return 0;
 }
 
+int komeda_improc_validate(struct komeda_improc *improc,
+			   struct komeda_component_output *input,
+			   struct komeda_component_output *slave_in,
+			   struct komeda_crtc_state *kcrtc_st)
+{
+	struct drm_crtc *crtc = kcrtc_st->base.crtc;
+	struct komeda_component_state *c_st;
+	struct komeda_improc_state *st;
+
+	c_st = komeda_component_get_state_and_set_user(&improc->base,
+			kcrtc_st->base.state, crtc, crtc);
+	if (IS_ERR(c_st))
+		return PTR_ERR(c_st);
+
+	st = to_improc_st(c_st);
+
+	pipeline_composition_size(kcrtc_st, &st->hsize, &st->vsize);
+
+	komeda_component_add_input(&st->base, input, 0);
+	komeda_component_set_output(input, &improc->base, 0);
+
+	return 0;
+}
+
+int komeda_timing_ctrlr_validate(struct komeda_timing_ctrlr *ctrlr,
+				 struct komeda_component_output *input,
+				 struct komeda_crtc_state *kcrtc_st)
+{
+	struct drm_crtc *crtc = kcrtc_st->base.crtc;
+	struct komeda_timing_ctrlr_state *st;
+	struct komeda_component_state *c_st;
+
+	c_st = komeda_component_get_state_and_set_user(&ctrlr->base,
+			kcrtc_st->base.state, crtc, crtc);
+	if (IS_ERR(c_st))
+		return PTR_ERR(c_st);
+
+	st = to_ctrlr_st(c_st);
+
+	komeda_component_add_input(&st->base, input, 0);
+	komeda_component_set_output(input, &ctrlr->base, 0);
+
+	return 0;
+}
+
 int komeda_build_layer_data_flow(struct komeda_layer *layer,
 				 struct komeda_component_output *dflow,
 				 struct komeda_plane_state *kplane_st,
@@ -406,3 +451,30 @@ int komeda_build_layer_data_flow(struct komeda_layer *layer,
 
 	return err;
 }
+
+/* build display output data flow, the data path is:
+ * compiz -> improc -> timing_ctrlr
+ */
+int komeda_build_display_data_flow(struct komeda_crtc *kcrtc,
+				   struct komeda_crtc_state *kcrtc_st)
+{
+	struct komeda_pipeline *master = kcrtc->master;
+	struct komeda_component_output m_dflow; /* master data flow */
+	int err;
+
+	memset(&m_dflow, 0, sizeof(m_dflow));
+
+	err = komeda_compiz_validate(master->compiz, &m_dflow, kcrtc_st, NULL);
+	if (err)
+		return err;
+
+	err = komeda_improc_validate(master->improc, &m_dflow, NULL, kcrtc_st);
+	if (err)
+		return err;
+
+	err = komeda_timing_ctrlr_validate(master->ctrlr, &m_dflow, kcrtc_st);
+	if (err)
+		return err;
+
+	return 0;
+}
-- 
2.17.1