diff options
Diffstat (limited to 'drivers/gpu/drm/drm_bridge.c')
| -rw-r--r-- | drivers/gpu/drm/drm_bridge.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index c3d69af02e79..39e68e45bb12 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -27,8 +27,10 @@ #include <linux/mutex.h> #include <drm/drm_atomic_state_helper.h> +#include <drm/drm_debugfs.h> #include <drm/drm_bridge.h> #include <drm/drm_encoder.h> +#include <drm/drm_file.h> #include <drm/drm_of.h> #include <drm/drm_print.h> @@ -1345,6 +1347,50 @@ 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_minor *minor) +{ + drm_debugfs_add_files(minor->dev, drm_bridge_debugfs_list, + ARRAY_SIZE(drm_bridge_debugfs_list)); +} +#endif + MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>"); MODULE_DESCRIPTION("DRM bridge infrastructure"); MODULE_LICENSE("GPL and additional rights"); |