Re: [Intel-gfx] [PATCH v4 13/13] drm/i915: replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi

Claudio Suarez
2021-11-02T13:00:35Z

Commit a92d083d08b0 created the new flag is_hdmi in drm_display_info
which is set when sink compliant with CEA-861 (EDID) will be treated
as an HDMI sink.

From that day, this value can be used in some cases instead of
calling drm_detect_hdmi_monitor() and a second parse is avoided
because drm_detect_hdmi_monitor() parses. A TODO task was
registered in Documentation/gpu/todo.rst to perform that task in
the future.

The flag drm_display_info.is_hdmi is set in the function
drm_add_display_info(), which is called from
drm_connector_update_edid_property(). Since commit 5186421cbfe2,
drm_get_edid() calls drm_connector_update_edid_property() when
reading the edid data from an i2c adapter. Therefore, in these
cases drm_display_info.is_hdmi is updated to its correct
value when returning from drm_get_edid().

Replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi
in the cases when drm_detect_hdmi_monitor() is called after a
read from an i2c adapter using drm_get_edid() in the i915 driver.

Signed-off-by: Claudio Suarez <cssk@net-c.es>
---
drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
drivers/gpu/drm/i915/display/intel_sdvo.c | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index b04685bb6439..008e5b0ba408 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2355,7 +2355,7 @@ intel_hdmi_set_edid(struct drm_connector *connector)
to_intel_connector(connector)->detect_edid = edid;
if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
- intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
+ intel_hdmi->has_hdmi_sink = connector->display_info.is_hdmi;

connected = true;
}
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 6cb27599ea03..b4065e4df644 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -2060,8 +2060,9 @@ intel_sdvo_tmds_sink_detect(struct drm_connector *connector)
if (edid->input & DRM_EDID_INPUT_DIGITAL) {
status = connector_status_connected;
if (intel_sdvo_connector->is_hdmi) {
- intel_sdvo->has_hdmi_monitor = drm_detect_hdmi_monitor(edid);
intel_sdvo->has_hdmi_audio = drm_detect_monitor_audio(edid);
+ intel_sdvo->has_hdmi_monitor =
+ connector->display_info.is_hdmi;
}
} else
status = connector_status_disconnected;
--
2.33.0