[PATCH v5 04/10] drm/bridge: display-connector: Use fwnode APIs to acquire device properties

Sui Jingfeng
2024-05-03T16:41:39Z

Switch to use the fwnode APIs, which is a fundamental step to make this
driver OF-independent possible. No functional changes for DT-based systems.

Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
---
drivers/gpu/drm/bridge/display-connector.c | 25 +++++++++++-----------
1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/bridge/display-connector.c b/drivers/gpu/drm/bridge/display-connector.c
index ab8e00baf3f1..ac680c6e9bd6 100644
--- a/drivers/gpu/drm/bridge/display-connector.c
+++ b/drivers/gpu/drm/bridge/display-connector.c
@@ -9,7 +9,6 @@
#include <linux/media-bus-format.h>
#include <linux/module.h>
#include <linux/mutex.h>
-#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>

@@ -204,6 +203,7 @@ static int display_connector_get_supply(struct platform_device *pdev,

static int display_connector_probe(struct platform_device *pdev)
{
+ struct fwnode_handle *fwnode = dev_fwnode(&pdev->dev);
struct display_connector *conn;
unsigned int type;
const char *label = NULL;
@@ -215,15 +215,15 @@ static int display_connector_probe(struct platform_device *pdev)

platform_set_drvdata(pdev, conn);

- type = (uintptr_t)of_device_get_match_data(&pdev->dev);
+ type = (uintptr_t)device_get_match_data(&pdev->dev);

/* Get the exact connector type. */
switch (type) {
case DRM_MODE_CONNECTOR_DVII: {
bool analog, digital;

- analog = of_property_read_bool(pdev->dev.of_node, "analog");
- digital = of_property_read_bool(pdev->dev.of_node, "digital");
+ analog = fwnode_property_present(fwnode, "analog");
+ digital = fwnode_property_present(fwnode, "digital");
if (analog && !digital) {
conn->bridge.type = DRM_MODE_CONNECTOR_DVIA;
} else if (!analog && digital) {
@@ -240,8 +240,7 @@ static int display_connector_probe(struct platform_device *pdev)
case DRM_MODE_CONNECTOR_HDMIA: {
const char *hdmi_type;

- ret = of_property_read_string(pdev->dev.of_node, "type",
- &hdmi_type);
+ ret = fwnode_property_read_string(fwnode, "type", &hdmi_type);
if (ret < 0) {
dev_err(&pdev->dev, "HDMI connector with no type\n");
return -EINVAL;
@@ -271,7 +270,7 @@ static int display_connector_probe(struct platform_device *pdev)
conn->bridge.interlace_allowed = true;

/* Get the optional connector label. */
- of_property_read_string(pdev->dev.of_node, "label", &label);
+ fwnode_property_read_string(fwnode, "label", &label);

/*
* Get the HPD GPIO for DVI, HDMI and DP connectors. If the GPIO can provide
@@ -309,12 +308,12 @@ static int display_connector_probe(struct platform_device *pdev)
if (type == DRM_MODE_CONNECTOR_DVII ||
type == DRM_MODE_CONNECTOR_HDMIA ||
type == DRM_MODE_CONNECTOR_VGA) {
- struct device_node *phandle;
+ struct fwnode_handle *phandle;

- phandle = of_parse_phandle(pdev->dev.of_node, "ddc-i2c-bus", 0);
- if (phandle) {
- conn->bridge.ddc = of_get_i2c_adapter_by_node(phandle);
- of_node_put(phandle);
+ phandle = fwnode_find_reference(fwnode, "ddc-i2c-bus", 0);
+ if (!IS_ERR(phandle)) {
+ conn->bridge.ddc = i2c_get_adapter_by_fwnode(phandle);
+ fwnode_handle_put(phandle);
if (!conn->bridge.ddc)
return -EPROBE_DEFER;
} else {
@@ -358,7 +357,7 @@ static int display_connector_probe(struct platform_device *pdev)
}

conn->bridge.funcs = &display_connector_bridge_funcs;
- conn->bridge.of_node = pdev->dev.of_node;
+ drm_bridge_set_node(&conn->bridge, fwnode);

if (conn->bridge.ddc)
conn->bridge.ops |= DRM_BRIDGE_OP_EDID
--
2.34.1