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Message-Id: <20220420114500.187664-2-jose.exposito89@gmail.com>
Date: Wed, 20 Apr 2022 13:44:59 +0200
From: José Expósito <jose.exposito89@...il.com>
To: emma@...olt.net
Cc: mripard@...nel.org, laurent.pinchart@...asonboard.com,
airlied@...ux.ie, daniel@...ll.ch, p.zabel@...gutronix.de,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
José Expósito <jose.exposito89@...il.com>
Subject: [PATCH v3 1/2] drm/vc4: hdmi: Replace drm_detect_hdmi_monitor() with is_hdmi
Once EDID is parsed, the monitor HDMI support information is cached in
drm_display_info.is_hdmi by drm_parse_hdmi_vsdb_video().
This driver calls drm_detect_hdmi_monitor() to receive the same
information and stores its own cached value in
vc4_hdmi_encoder.hdmi_monitor, which is less efficient.
Avoid calling drm_detect_hdmi_monitor() and use drm_display_info.is_hdmi
instead. This also allows to remove vc4_hdmi_encoder.hdmi_monitor.
drm_detect_hdmi_monitor() is called in vc4_hdmi_connector_detect() and
vc4_hdmi_connector_get_modes(). In both cases it is safe to rely on
drm_display_info.is_hdmi as shown by ftrace:
$ sudo trace-cmd record -p function_graph -l "vc4_hdmi_*" -l "drm_*"
vc4_hdmi_connector_detect:
vc4_hdmi_connector_detect() {
drm_get_edid() {
drm_connector_update_edid_property() {
drm_add_display_info() {
drm_reset_display_info();
drm_for_each_detailed_block.part.0();
drm_parse_cea_ext() {
drm_find_cea_extension();
drm_parse_hdmi_vsdb_video();
/* drm_display_info.is_hdmi is cached here */
}
}
}
}
/* drm_display_info.is_hdmi is used here */
}
vc4_hdmi_connector_get_modes:
vc4_hdmi_connector_get_modes() {
drm_get_edid() {
drm_connector_update_edid_property() {
drm_add_display_info() {
drm_reset_display_info();
drm_for_each_detailed_block.part.0();
drm_parse_cea_ext() {
drm_find_cea_extension();
drm_parse_hdmi_vsdb_video();
/* drm_display_info.is_hdmi is cached here */
}
}
}
}
/* drm_display_info.is_hdmi is used here */
drm_connector_update_edid_property();
}
Signed-off-by: José Expósito <jose.exposito89@...il.com>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 17 ++++++-----------
drivers/gpu/drm/vc4/vc4_hdmi.h | 1 -
2 files changed, 6 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 6c58b0fd13fb..9c73a211ae80 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -107,9 +107,9 @@ static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode)
static bool vc4_hdmi_is_full_range_rgb(struct vc4_hdmi *vc4_hdmi,
const struct drm_display_mode *mode)
{
- struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder;
+ struct drm_display_info *display = &vc4_hdmi->connector.display_info;
- return !vc4_encoder->hdmi_monitor ||
+ return !display->is_hdmi ||
drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL;
}
@@ -216,7 +216,6 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
if (edid) {
cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid);
- vc4_hdmi->encoder.hdmi_monitor = drm_detect_hdmi_monitor(edid);
kfree(edid);
}
}
@@ -242,7 +241,6 @@ static void vc4_hdmi_connector_destroy(struct drm_connector *connector)
static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
- struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder;
int ret = 0;
struct edid *edid;
@@ -255,8 +253,6 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
goto out;
}
- vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
-
drm_connector_update_edid_property(connector, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
@@ -578,13 +574,12 @@ static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder)
static bool vc4_hdmi_supports_scrambling(struct drm_encoder *encoder,
struct drm_display_mode *mode)
{
- struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
struct drm_display_info *display = &vc4_hdmi->connector.display_info;
lockdep_assert_held(&vc4_hdmi->mutex);
- if (!vc4_encoder->hdmi_monitor)
+ if (!display->is_hdmi)
return false;
if (!display->hdmi.scdc.supported ||
@@ -1147,7 +1142,7 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
- struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ struct drm_display_info *display = &vc4_hdmi->connector.display_info;
bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC;
bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC;
unsigned long flags;
@@ -1168,7 +1163,7 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
HDMI_WRITE(HDMI_VID_CTL,
HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_BLANKPIX);
- if (vc4_encoder->hdmi_monitor) {
+ if (display->is_hdmi) {
HDMI_WRITE(HDMI_SCHEDULER_CONTROL,
HDMI_READ(HDMI_SCHEDULER_CONTROL) |
VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI);
@@ -1195,7 +1190,7 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
"!VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE\n");
}
- if (vc4_encoder->hdmi_monitor) {
+ if (display->is_hdmi) {
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
WARN_ON(!(HDMI_READ(HDMI_SCHEDULER_CONTROL) &
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 1076faeab616..44977002445f 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -11,7 +11,6 @@
/* VC4 HDMI encoder KMS struct */
struct vc4_hdmi_encoder {
struct vc4_encoder base;
- bool hdmi_monitor;
};
static inline struct vc4_hdmi_encoder *
--
2.25.1
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