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gpu: drm: replace of_graph_get_next_endpoint()

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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@kernel.org
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/87frob3neo.wl-kuninori.morimoto.gx@renesas.com
This commit is contained in:
Kuninori Morimoto 2024-10-31 22:42:07 +00:00 committed by Thomas Zimmermann
parent d84927a4ad
commit 17558f97fe
3 changed files with 5 additions and 3 deletions
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4
drivers/gpu/drm/drm_of.c
View File

@ -564,6 +564,8 @@ EXPORT_SYMBOL_GPL(drm_of_get_data_lanes_count_ep);
* Gets parent DSI bus for a DSI device controlled through a bus other
* than MIPI-DCS (SPI, I2C, etc.) using the Device Tree.
*
* This function assumes that the device's port@0 is the DSI input.
*
* Returns pointer to mipi_dsi_host if successful, -EINVAL if the
* request is unsupported, -EPROBE_DEFER if the DSI host is found but
* not available, or -ENODEV otherwise.
@ -576,7 +578,7 @@ struct mipi_dsi_host *drm_of_get_dsi_bus(struct device *dev)
/*
* Get first endpoint child from device.
*/
endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1);
if (!endpoint)
return ERR_PTR(-ENODEV);

2
drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
View File

@ -400,7 +400,7 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c)
rpi_touchscreen_i2c_write(ts, REG_POWERON, 0);
/* Look up the DSI host. It needs to probe before we do. */
endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1);
if (!endpoint)
return -ENODEV;

2
drivers/gpu/drm/tiny/arcpgu.c
View File

@ -289,7 +289,7 @@ static int arcpgu_load(struct arcpgu_drm_private *arcpgu)
* There is only one output port inside each device. It is linked with
* encoder endpoint.
*/
endpoint_node = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
endpoint_node = of_graph_get_endpoint_by_regs(pdev->dev.of_node, 0, -1);
if (endpoint_node) {
encoder_node = of_graph_get_remote_port_parent(endpoint_node);
of_node_put(endpoint_node);