Instead of having a single file with all bridge chains, list bridges
under a corresponding per-encoder debugfs directory.
While we are at it, also slightly improve the formatting of the bridge
data: split a single line entry into multiple lines, include the symbol
name of the bridge funcs and add the textual representation of the
bridge ops.
Example of the listing:
$ cat /sys/kernel/debug/dri/0/encoder-0/bridges
bridge[0]: dsi_mgr_bridge_funcs
type: [0] Unknown
ops: [0]
bridge[1]: lt9611uxc_bridge_funcs
type: [11] HDMI-A
OF: /soc@0/geniqup@9c0000/i2c@994000/hdmi-bridge@2b:lontium,lt9611uxc
ops: [7] detect edid hpd
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/gpu/drm/drm_bridge.c | 44 -----------------------------------
drivers/gpu/drm/drm_debugfs.c | 40 ++++++++++++++++++++++++++++---
include/drm/drm_bridge.h | 2 --
3 files changed, 37 insertions(+), 49 deletions(-)
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 30d66bee0ec6..cee3188adf3d 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -1347,50 +1347,6 @@ struct drm_bridge *of_drm_find_bridge(struct device_node *np)
EXPORT_SYMBOL(of_drm_find_bridge);
#endif
-#ifdef CONFIG_DEBUG_FS
-static int drm_bridge_chains_info(struct seq_file *m, void *data)
-{
- struct drm_debugfs_entry *entry = m->private;
- struct drm_device *dev = entry->dev;
- struct drm_printer p = drm_seq_file_printer(m);
- struct drm_mode_config *config = &dev->mode_config;
- struct drm_encoder *encoder;
- unsigned int bridge_idx = 0;
-
- list_for_each_entry(encoder, &config->encoder_list, head) {
- struct drm_bridge *bridge;
-
- drm_printf(&p, "encoder[%u]\n", encoder->base.id);
-
- drm_for_each_bridge_in_chain(encoder, bridge) {
- drm_printf(&p, "\tbridge[%u] type: %u, ops: %#x",
- bridge_idx, bridge->type, bridge->ops);
-
-#ifdef CONFIG_OF
- if (bridge->of_node)
- drm_printf(&p, ", OF: %pOFfc", bridge->of_node);
-#endif
-
- drm_printf(&p, "\n");
-
- bridge_idx++;
- }
- }
-
- return 0;
-}
-
-static const struct drm_debugfs_info drm_bridge_debugfs_list[] = {
- { "bridge_chains", drm_bridge_chains_info, 0 },
-};
-
-void drm_bridge_debugfs_init(struct drm_device *dev)
-{
- drm_debugfs_add_files(dev, drm_bridge_debugfs_list,
- ARRAY_SIZE(drm_bridge_debugfs_list));
-}
-#endif
-
MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@xxxxxxxxxxx>");
MODULE_DESCRIPTION("DRM bridge infrastructure");
MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 00406b4f3235..02e7481758c0 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -314,10 +314,8 @@ void drm_debugfs_dev_register(struct drm_device *dev)
drm_framebuffer_debugfs_init(dev);
drm_client_debugfs_init(dev);
}
- if (drm_drv_uses_atomic_modeset(dev)) {
+ if (drm_drv_uses_atomic_modeset(dev))
drm_atomic_debugfs_init(dev);
- drm_bridge_debugfs_init(dev);
- }
}
int drm_debugfs_register(struct drm_minor *minor, int minor_id,
@@ -589,6 +587,38 @@ void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
crtc->debugfs_entry = NULL;
}
+static int bridges_show(struct seq_file *m, void *data)
+{
+ struct drm_encoder *encoder = m->private;
+ struct drm_printer p = drm_seq_file_printer(m);
+ struct drm_bridge *bridge;
+ unsigned int idx = 0;
+
+ drm_for_each_bridge_in_chain(encoder, bridge) {
+ drm_printf(&p, "bridge[%d]: %ps\n", idx++, bridge->funcs);
+ drm_printf(&p, "\ttype: [%d] %s\n",
+ bridge->type,
+ drm_get_connector_type_name(bridge->type));
+#ifdef CONFIG_OF
+ if (bridge->of_node)
+ drm_printf(&p, "\tOF: %pOFfc\n", bridge->of_node);
+#endif
+ drm_printf(&p, "\tops: [0x%x]", bridge->ops);
+ if (bridge->ops & DRM_BRIDGE_OP_DETECT)
+ drm_puts(&p, " detect");
+ if (bridge->ops & DRM_BRIDGE_OP_EDID)
+ drm_puts(&p, " edid");
+ if (bridge->ops & DRM_BRIDGE_OP_HPD)
+ drm_puts(&p, " hpd");
+ if (bridge->ops & DRM_BRIDGE_OP_MODES)
+ drm_puts(&p, " modes");
+ drm_puts(&p, "\n");
+ }
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(bridges);
+
void drm_debugfs_encoder_add(struct drm_encoder *encoder)
{
struct drm_minor *minor = encoder->dev->primary;
@@ -604,6 +634,10 @@ void drm_debugfs_encoder_add(struct drm_encoder *encoder)
encoder->debugfs_entry = root;
+ /* bridges list */
+ debugfs_create_file("bridges", 0444, root, encoder,
+ &bridges_fops);
+
if (encoder->funcs->debugfs_init)
encoder->funcs->debugfs_init(encoder, root);
}
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index cfb7dcdb66c4..6cace8ca132e 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -950,6 +950,4 @@ static inline struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm,
}
#endif
-void drm_bridge_debugfs_init(struct drm_device *dev);
-
#endif
--
2.39.2
