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Message-Id: <20230411114235.366042-16-biju.das.jz@bp.renesas.com>
Date: Tue, 11 Apr 2023 12:42:33 +0100
From: Biju Das <biju.das.jz@...renesas.com>
To: David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-media@...r.kernel.org,
Geert Uytterhoeven <geert+renesas@...der.be>,
Chris Paterson <Chris.Paterson2@...esas.com>,
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
linux-renesas-soc@...r.kernel.org
Subject: [PATCH v7 15/17] drm: rcar-du: Move rcar_du_encoders_init()
RZ/G2L supports only DSI and DPI. Add rcar_du_encoders_init() to handle
the pointer to du_output_name(), so that we can share du_encoders_init()
between RCar and RZ/G2L kms drivers.
Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
---
v6->v7:
* Rebased to drm-tip.
v1->v6:
* Rebased on drm-misc-next and DU-next.
v1:
* Created the lib suggested by Laurent.
Ref:
https://patchwork.kernel.org/project/linux-renesas-soc/patch/20220316131100.30685-6-biju.das.jz@bp.renesas.com/
---
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 92 +------------------
drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c | 102 ++++++++++++++++++++++
drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h | 6 ++
3 files changed, 110 insertions(+), 90 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index b0b40b1cc37d..94f1602ea707 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -69,95 +69,6 @@ static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = {
.atomic_commit = drm_atomic_helper_commit,
};
-static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu,
- enum rcar_du_output output,
- struct of_endpoint *ep)
-{
- struct device_node *entity;
- int ret;
-
- /* Locate the connected entity and initialize the encoder. */
- entity = of_graph_get_remote_port_parent(ep->local_node);
- if (!entity) {
- dev_dbg(rcdu->dev, "unconnected endpoint %pOF, skipping\n",
- ep->local_node);
- return -ENODEV;
- }
-
- if (!of_device_is_available(entity)) {
- dev_dbg(rcdu->dev,
- "connected entity %pOF is disabled, skipping\n",
- entity);
- of_node_put(entity);
- return -ENODEV;
- }
-
- ret = rcar_du_encoder_init(rcdu, output, entity);
- if (ret && ret != -EPROBE_DEFER && ret != -ENOLINK)
- dev_warn(rcdu->dev,
- "failed to initialize encoder %pOF on output %s (%d), skipping\n",
- entity, rcar_du_output_name(output), ret);
-
- of_node_put(entity);
-
- return ret;
-}
-
-static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
-{
- struct device_node *np = rcdu->dev->of_node;
- struct device_node *ep_node;
- unsigned int num_encoders = 0;
-
- /*
- * Iterate over the endpoints and create one encoder for each output
- * pipeline.
- */
- for_each_endpoint_of_node(np, ep_node) {
- enum rcar_du_output output;
- struct of_endpoint ep;
- unsigned int i;
- int ret;
-
- ret = of_graph_parse_endpoint(ep_node, &ep);
- if (ret < 0) {
- of_node_put(ep_node);
- return ret;
- }
-
- /* Find the output route corresponding to the port number. */
- for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) {
- if (rcdu->info->routes[i].possible_crtcs &&
- rcdu->info->routes[i].port == ep.port) {
- output = i;
- break;
- }
- }
-
- if (i == RCAR_DU_OUTPUT_MAX) {
- dev_warn(rcdu->dev,
- "port %u references unexisting output, skipping\n",
- ep.port);
- continue;
- }
-
- /* Process the output pipeline. */
- ret = rcar_du_encoders_init_one(rcdu, output, &ep);
- if (ret < 0) {
- if (ret == -EPROBE_DEFER) {
- of_node_put(ep_node);
- return ret;
- }
-
- continue;
- }
-
- num_encoders++;
- }
-
- return num_encoders;
-}
-
static int rcar_du_properties_init(struct rcar_du_device *rcdu)
{
/*
@@ -457,7 +368,8 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
}
/* Initialize the encoders. */
- ret = rcar_du_encoders_init(rcdu);
+ ret = rcar_du_encoders_init(rcdu, rcar_du_output_name,
+ rcar_du_encoder_init);
if (ret < 0)
return ret;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c
index 13d033009c9f..781e666a45a8 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c
@@ -15,6 +15,8 @@
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
+#include <linux/of_graph.h>
+#include <linux/of_platform.h>
#include <linux/videodev2.h>
#include "rcar_du_drv.h"
@@ -535,3 +537,103 @@ rcar_du_lib_mode_cfg_helper_get(void)
{
return &rcar_du_mode_config_helper;
}
+
+static int
+rcar_du_encoders_init_one(struct rcar_du_device *rcdu,
+ enum rcar_du_output output,
+ struct of_endpoint *ep,
+ const char *output_name,
+ int (*rcar_du_encoder_init_fn)(struct rcar_du_device *r,
+ enum rcar_du_output op,
+ struct device_node *d))
+{
+ struct device_node *entity;
+ int ret;
+
+ /* Locate the connected entity and initialize the encoder. */
+ entity = of_graph_get_remote_port_parent(ep->local_node);
+ if (!entity) {
+ dev_dbg(rcdu->dev, "unconnected endpoint %pOF, skipping\n",
+ ep->local_node);
+ return -ENODEV;
+ }
+
+ if (!of_device_is_available(entity)) {
+ dev_dbg(rcdu->dev,
+ "connected entity %pOF is disabled, skipping\n",
+ entity);
+ of_node_put(entity);
+ return -ENODEV;
+ }
+
+ ret = rcar_du_encoder_init_fn(rcdu, output, entity);
+ if (ret && ret != -EPROBE_DEFER && ret != -ENOLINK)
+ dev_warn(rcdu->dev,
+ "failed to initialize encoder %pOF on output %s (%d), skipping\n",
+ entity, output_name, ret);
+
+ of_node_put(entity);
+
+ return ret;
+}
+
+int rcar_du_encoders_init(struct rcar_du_device *rcdu,
+ const char* (*out_name)(enum rcar_du_output output),
+ int (*encoder_init_fn)(struct rcar_du_device *rcdu,
+ enum rcar_du_output output,
+ struct device_node *enc_node))
+{
+ struct device_node *np = rcdu->dev->of_node;
+ struct device_node *ep_node;
+ unsigned int num_encoders = 0;
+
+ /*
+ * Iterate over the endpoints and create one encoder for each output
+ * pipeline.
+ */
+ for_each_endpoint_of_node(np, ep_node) {
+ enum rcar_du_output output;
+ struct of_endpoint ep;
+ unsigned int i;
+ int ret;
+
+ ret = of_graph_parse_endpoint(ep_node, &ep);
+ if (ret < 0) {
+ of_node_put(ep_node);
+ return ret;
+ }
+
+ /* Find the output route corresponding to the port number. */
+ for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) {
+ if (rcdu->info->routes[i].possible_crtcs &&
+ rcdu->info->routes[i].port == ep.port) {
+ output = i;
+ break;
+ }
+ }
+
+ if (i == RCAR_DU_OUTPUT_MAX) {
+ dev_warn(rcdu->dev,
+ "port %u references unexisting output, skipping\n",
+ ep.port);
+ continue;
+ }
+
+ /* Process the output pipeline. */
+ ret = rcar_du_encoders_init_one(rcdu, output, &ep,
+ out_name(output),
+ encoder_init_fn);
+ if (ret < 0) {
+ if (ret == -EPROBE_DEFER) {
+ of_node_put(ep_node);
+ return ret;
+ }
+
+ continue;
+ }
+
+ num_encoders++;
+ }
+
+ return num_encoders;
+}
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h
index be36b98b2d5d..ace973b80fe6 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h
@@ -45,4 +45,10 @@ rcar_du_lib_fb_create(struct drm_device *dev, struct drm_file *file_priv,
const struct drm_mode_config_helper_funcs *
rcar_du_lib_mode_cfg_helper_get(void);
+int rcar_du_encoders_init(struct rcar_du_device *rcdu,
+ const char* (*out_name)(enum rcar_du_output output),
+ int (*encoder_init_fn)(struct rcar_du_device *rcdu,
+ enum rcar_du_output output,
+ struct device_node *enc_node));
+
#endif /* __RCAR_DU_KMS_LIB_H__ */
--
2.25.1
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