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Message-Id: <20170329194613.55548-5-icenowy@aosc.io>
Date: Thu, 30 Mar 2017 03:46:06 +0800
From: Icenowy Zheng <icenowy@...c.io>
To: Rob Herring <robh+dt@...nel.org>,
Maxime Ripard <maxime.ripard@...e-electrons.com>,
Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...l.net>
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
dri-devel@...ts.freedesktop.org, linux-sunxi@...glegroups.com,
Icenowy Zheng <icenowy@...c.io>
Subject: [PATCH v3 04/11] drm/sun4i: abstract the layer type
As we are going to add support for the Allwinner DE2 Mixer in sun4i-drm
driver, we will finally have two types of layer.
Abstract the layer type to void * and a ops struct, which contains the
only function used by crtc -- get the drm_plane struct of the layer.
Signed-off-by: Icenowy Zheng <icenowy@...c.io>
---
Refactored patch in v3.
drivers/gpu/drm/sun4i/sun4i_crtc.c | 19 +++++++++++--------
drivers/gpu/drm/sun4i/sun4i_crtc.h | 3 ++-
drivers/gpu/drm/sun4i/sun4i_layer.c | 19 ++++++++++++++++++-
drivers/gpu/drm/sun4i/sun4i_layer.h | 2 +-
drivers/gpu/drm/sun4i/sunxi_layer.h | 17 +++++++++++++++++
5 files changed, 49 insertions(+), 11 deletions(-)
create mode 100644 drivers/gpu/drm/sun4i/sunxi_layer.h
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index 3c876c3a356a..33854ee7f636 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -29,6 +29,7 @@
#include "sun4i_crtc.h"
#include "sun4i_drv.h"
#include "sun4i_layer.h"
+#include "sunxi_layer.h"
#include "sun4i_tcon.h"
static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc,
@@ -149,7 +150,7 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
scrtc->tcon = tcon;
/* Create our layers */
- scrtc->layers = sun4i_layers_init(drm, scrtc->backend);
+ scrtc->layers = (void **)sun4i_layers_init(drm, scrtc);
if (IS_ERR(scrtc->layers)) {
dev_err(drm->dev, "Couldn't create the planes\n");
return NULL;
@@ -157,14 +158,15 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
/* find primary and cursor planes for drm_crtc_init_with_planes */
for (i = 0; scrtc->layers[i]; i++) {
- struct sun4i_layer *layer = scrtc->layers[i];
+ void *layer = scrtc->layers[i];
+ struct drm_plane *plane = scrtc->layer_ops->get_plane(layer);
- switch (layer->plane.type) {
+ switch (plane->type) {
case DRM_PLANE_TYPE_PRIMARY:
- primary = &layer->plane;
+ primary = plane;
break;
case DRM_PLANE_TYPE_CURSOR:
- cursor = &layer->plane;
+ cursor = plane;
break;
default:
break;
@@ -190,10 +192,11 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
/* Set possible_crtcs to this crtc for overlay planes */
for (i = 0; scrtc->layers[i]; i++) {
uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
- struct sun4i_layer *layer = scrtc->layers[i];
+ void *layer = scrtc->layers[i];
+ struct drm_plane *plane = scrtc->layer_ops->get_plane(layer);
- if (layer->plane.type == DRM_PLANE_TYPE_OVERLAY)
- layer->plane.possible_crtcs = possible_crtcs;
+ if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+ plane->possible_crtcs = possible_crtcs;
}
return scrtc;
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.h b/drivers/gpu/drm/sun4i/sun4i_crtc.h
index 230cb8f0d601..a4036ee44cf8 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.h
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.h
@@ -19,7 +19,8 @@ struct sun4i_crtc {
struct sun4i_backend *backend;
struct sun4i_tcon *tcon;
- struct sun4i_layer **layers;
+ void **layers;
+ const struct sunxi_layer_ops *layer_ops;
};
static inline struct sun4i_crtc *drm_crtc_to_sun4i_crtc(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index f26bde5b9117..bc4a70d6968b 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -16,7 +16,9 @@
#include <drm/drmP.h>
#include "sun4i_backend.h"
+#include "sun4i_crtc.h"
#include "sun4i_layer.h"
+#include "sunxi_layer.h"
struct sun4i_plane_desc {
enum drm_plane_type type;
@@ -100,6 +102,17 @@ static const struct sun4i_plane_desc sun4i_backend_planes[] = {
},
};
+static struct drm_plane *sun4i_layer_get_plane(void *layer)
+{
+ struct sun4i_layer *sun4i_layer = layer;
+
+ return &sun4i_layer->plane;
+}
+
+static const struct sunxi_layer_ops layer_ops = {
+ .get_plane = sun4i_layer_get_plane,
+};
+
static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
struct sun4i_backend *backend,
const struct sun4i_plane_desc *plane)
@@ -129,9 +142,10 @@ static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
}
struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
- struct sun4i_backend *backend)
+ struct sun4i_crtc *crtc)
{
struct sun4i_layer **layers;
+ struct sun4i_backend *backend = crtc->backend;
int i;
layers = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
@@ -181,5 +195,8 @@ struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
layers[i] = layer;
};
+ /* Assign layer ops to the CRTC */
+ crtc->layer_ops = &layer_ops;
+
return layers;
}
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.h b/drivers/gpu/drm/sun4i/sun4i_layer.h
index 4be1f0919df2..425eea7b9e3b 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.h
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.h
@@ -27,6 +27,6 @@ plane_to_sun4i_layer(struct drm_plane *plane)
}
struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
- struct sun4i_backend *backend);
+ struct sun4i_crtc *crtc);
#endif /* _SUN4I_LAYER_H_ */
diff --git a/drivers/gpu/drm/sun4i/sunxi_layer.h b/drivers/gpu/drm/sun4i/sunxi_layer.h
new file mode 100644
index 000000000000..d8838ec39299
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sunxi_layer.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2017 Icenowy Zheng <icenowy@...c.xyz>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUNXI_LAYER_H_
+#define _SUNXI_LAYER_H_
+
+struct sunxi_layer_ops {
+ struct drm_plane *(*get_plane)(void *layer);
+};
+
+#endif /* _SUNXI_LAYER_H_ */
--
2.12.0
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