This patch adds a hook in drm_connector_helper_funcs to get the
support of the driver for adaptive sync functionality.
This can be called in the connector probe helper function after
the connector detect() and get_modes() hooks to also
query the adaptive sync support of the driver.
Cc: Jani Nikula <jani.nik...@linux.intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Harry Wentland <harry.wentl...@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
---
drivers/gpu/drm/drm_probe_helper.c | 4 ++++
include/drm/drm_modeset_helper_vtables.h | 16 ++++++++++++++++
2 files changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/drm_probe_helper.c
b/drivers/gpu/drm/drm_probe_helper.c
index 576b4b7dcd89..4403817bfb02 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -482,6 +482,10 @@ int drm_helper_probe_single_connector_modes(struct
drm_connector *connector,
count = (*connector_funcs->get_modes)(connector);
+ /* Get the Adaptive Sync Support if helper exists */
+ if (*connector_funcs->get_adaptive_sync_support)
+ (**connector_funcs->get_adaptive_sync_support)(connector);
+
/*
* Fallback for when DDC probe failed in drm_get_edid() and thus skipped
* override/firmware EDID.
diff --git a/include/drm/drm_modeset_helper_vtables.h
b/include/drm/drm_modeset_helper_vtables.h
index 7c20b1c8b6a7..0b203fdd25df 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -1079,6 +1079,22 @@ struct drm_connector_helper_funcs {
struct drm_writeback_job *job);
void (*cleanup_writeback_job)(struct drm_writeback_connector *connector,
struct drm_writeback_job *job);
+
+ /**
+ * @get_adaptive_sync_support:
+ *
+ * This hook is used by the probe helper to get the driver's support
+ * for adaptive sync or variable refresh rate.
+ * This is called from drm_helper_probe_single_connector_modes()
+ * This is called after the @get_modes hook so that the connector modes
+ * are already obtained and EDID is parsed to obtain the monitor
+ * range descriptor information.
+ *
+ * This hook is optional and defined only for the drivers and on
+ * connectors that advertise adaptive sync support.
+ *
+ */
+ void (*get_adaptive_sync_support)(struct drm_connector *connector);
};
/**
--
2.19.1
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