Re: [PATCH 2/2] video: fbdev: replace of_graph_get_next_endpoint()

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On 3/25/24 03:57, Kuninori Morimoto wrote:
 From DT point of view, in general, drivers should be asking for a
specific port number because their function is fixed in the binding.

of_graph_get_next_endpoint() doesn't match to this concept.

Simply replace

	- of_graph_get_next_endpoint(xxx, NULL);
	+ of_graph_get_endpoint_by_regs(xxx, 0, -1);

Link: https://lore.kernel.org/r/20240202174941.GA310089-robh@xxxxxxxxxx
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

applied to fbdev git tree.

Thanks!
Helge


---
  drivers/video/fbdev/omap2/omapfb/dss/dsi.c    |  3 ++-
  drivers/video/fbdev/omap2/omapfb/dss/dss-of.c | 20 +------------------
  drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c  |  3 ++-
  drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c  |  3 ++-
  drivers/video/fbdev/omap2/omapfb/dss/venc.c   |  3 ++-
  drivers/video/fbdev/pxafb.c                   |  2 +-
  include/video/omapfb_dss.h                    |  3 ---
  7 files changed, 10 insertions(+), 27 deletions(-)

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dsi.c b/drivers/video/fbdev/omap2/omapfb/dss/dsi.c
index b7eb17a16ec4..1f13bcf73da5 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/dsi.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/dsi.c
@@ -28,6 +28,7 @@
  #include <linux/debugfs.h>
  #include <linux/pm_runtime.h>
  #include <linux/of.h>
+#include <linux/of_graph.h>
  #include <linux/of_platform.h>
  #include <linux/component.h>

@@ -5079,7 +5080,7 @@ static int dsi_probe_of(struct platform_device *pdev)
  	struct device_node *ep;
  	struct omap_dsi_pin_config pin_cfg;

-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
  	if (!ep)
  		return 0;

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c b/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c
index 0282d4eef139..14965a3fd05b 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c
@@ -130,24 +130,6 @@ static struct device_node *omapdss_of_get_remote_port(const struct device_node *
  	return np;
  }

-struct device_node *
-omapdss_of_get_first_endpoint(const struct device_node *parent)
-{
-	struct device_node *port, *ep;
-
-	port = omapdss_of_get_next_port(parent, NULL);
-
-	if (!port)
-		return NULL;
-
-	ep = omapdss_of_get_next_endpoint(port, NULL);
-
-	of_node_put(port);
-
-	return ep;
-}
-EXPORT_SYMBOL_GPL(omapdss_of_get_first_endpoint);
-
  struct omap_dss_device *
  omapdss_of_find_source_for_first_ep(struct device_node *node)
  {
@@ -155,7 +137,7 @@ omapdss_of_find_source_for_first_ep(struct device_node *node)
  	struct device_node *src_port;
  	struct omap_dss_device *src;

-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
  	if (!ep)
  		return ERR_PTR(-EINVAL);

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c
index f05b4e35a842..8f407ec134dc 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c
@@ -20,6 +20,7 @@
  #include <linux/pm_runtime.h>
  #include <linux/clk.h>
  #include <linux/of.h>
+#include <linux/of_graph.h>
  #include <linux/regulator/consumer.h>
  #include <linux/component.h>
  #include <video/omapfb_dss.h>
@@ -529,7 +530,7 @@ static int hdmi_probe_of(struct platform_device *pdev)
  	struct device_node *ep;
  	int r;

-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
  	if (!ep)
  		return 0;

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c
index 03292945b1d4..4ad219f522b9 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c
@@ -25,6 +25,7 @@
  #include <linux/pm_runtime.h>
  #include <linux/clk.h>
  #include <linux/of.h>
+#include <linux/of_graph.h>
  #include <linux/regulator/consumer.h>
  #include <linux/component.h>
  #include <video/omapfb_dss.h>
@@ -561,7 +562,7 @@ static int hdmi_probe_of(struct platform_device *pdev)
  	struct device_node *ep;
  	int r;

-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
  	if (!ep)
  		return 0;

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/venc.c b/drivers/video/fbdev/omap2/omapfb/dss/venc.c
index c9d40e28a06f..0bd80d3b8f1b 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/venc.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/venc.c
@@ -24,6 +24,7 @@
  #include <linux/regulator/consumer.h>
  #include <linux/pm_runtime.h>
  #include <linux/of.h>
+#include <linux/of_graph.h>
  #include <linux/component.h>

  #include <video/omapfb_dss.h>
@@ -764,7 +765,7 @@ static int venc_probe_of(struct platform_device *pdev)
  	u32 channels;
  	int r;

-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
  	if (!ep)
  		return 0;

diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c
index fa943612c4e2..2ef56fa28aff 100644
--- a/drivers/video/fbdev/pxafb.c
+++ b/drivers/video/fbdev/pxafb.c
@@ -2171,7 +2171,7 @@ static int of_get_pxafb_mode_info(struct device *dev,
  	u32 bus_width;
  	int ret, i;

-	np = of_graph_get_next_endpoint(dev->of_node, NULL);
+	np = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1);
  	if (!np) {
  		dev_err(dev, "could not find endpoint\n");
  		return -EINVAL;
diff --git a/include/video/omapfb_dss.h b/include/video/omapfb_dss.h
index e8eaac2cb7b8..a8c0c3eeeb5b 100644
--- a/include/video/omapfb_dss.h
+++ b/include/video/omapfb_dss.h
@@ -819,9 +819,6 @@ struct device_node *
  omapdss_of_get_next_endpoint(const struct device_node *parent,
  			     struct device_node *prev);

-struct device_node *
-omapdss_of_get_first_endpoint(const struct device_node *parent);
-
  struct omap_dss_device *
  omapdss_of_find_source_for_first_ep(struct device_node *node);
  #else






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