Commit 17558f97 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Thomas Zimmermann
Browse files

gpu: drm: replace of_graph_get_next_endpoint() 

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: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/87frob3neo.wl-kuninori.morimoto.gx@renesas.com
parent d84927a4

drivers/gpu/drm/drm_of.c

+3 −1
Original line number Diff line number Diff line
@@ -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);

drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

drivers/gpu/drm/tiny/arcpgu.c

+1 −1
Original line number Diff line number Diff line
@@ -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);