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Message-Id: <20250209-fd-hdmi-hpd-v4-15-6224568ed87f@linaro.org>
Date: Sun, 09 Feb 2025 07:04:59 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Rob Clark <robdclark@...il.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>,
Simona Vetter <simona.vetter@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, Jessica Zhang <quic_jesszhan@...cinc.com>
Subject: [PATCH v4 15/16] drm/msm/hdmi: wire in hpd_enable/hpd_disable
bridge ops
The HDMI driver already has msm_hdmi_hpd_enable() and
msm_hdmi_hpd_disable() functions. Wire them into the
msm_hdmi_bridge_funcs, so that HPD can be enabled and disabled
dynamically rather than always having HPD events generation enabled.
Reviewed-by: Jessica Zhang <quic_jesszhan@...cinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
drivers/gpu/drm/msm/hdmi/hdmi.c | 9 ---------
drivers/gpu/drm/msm/hdmi/hdmi.h | 4 ++--
drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 2 ++
drivers/gpu/drm/msm/hdmi/hdmi_hpd.c | 12 ++++++------
4 files changed, 10 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index b0292750265082c47093ed5cf50bbcba9e67c955..f1898d8eed6fa46c47c9b632a90daeabe74f4359 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -200,12 +200,6 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
goto fail;
}
- ret = msm_hdmi_hpd_enable(hdmi->bridge);
- if (ret < 0) {
- DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
- goto fail;
- }
-
return 0;
fail:
@@ -261,9 +255,6 @@ static void msm_hdmi_unbind(struct device *dev, struct device *master,
struct msm_drm_private *priv = dev_get_drvdata(master);
if (priv->hdmi) {
- if (priv->hdmi->bridge)
- msm_hdmi_hpd_disable(priv->hdmi);
-
msm_hdmi_destroy(priv->hdmi);
priv->hdmi = NULL;
}
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index 39adc8929bd601d4846f75b35c087de93c3df6be..679a2dab762c1333153c97709c99db8cc5a76d1a 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -214,8 +214,8 @@ int msm_hdmi_bridge_init(struct hdmi *hdmi);
void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
enum drm_connector_status msm_hdmi_bridge_detect(
struct drm_bridge *bridge);
-int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
-void msm_hdmi_hpd_disable(struct hdmi *hdmi);
+void msm_hdmi_hpd_enable(struct drm_bridge *bridge);
+void msm_hdmi_hpd_disable(struct drm_bridge *bridge);
/*
* i2c adapter for ddc:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index f97f8b104f93bcca20e5f81f928d9b23c14fbe28..4de0f9b870a426bca825469195b1e3fac7729445 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -462,6 +462,8 @@ static const struct drm_bridge_funcs msm_hdmi_bridge_funcs = {
.atomic_post_disable = msm_hdmi_bridge_atomic_post_disable,
.edid_read = msm_hdmi_bridge_edid_read,
.detect = msm_hdmi_bridge_detect,
+ .hpd_enable = msm_hdmi_hpd_enable,
+ .hpd_disable = msm_hdmi_hpd_disable,
.hdmi_tmds_char_rate_valid = msm_hdmi_bridge_tmds_char_rate_valid,
.hdmi_clear_infoframe = msm_hdmi_bridge_clear_infoframe,
.hdmi_write_infoframe = msm_hdmi_bridge_write_infoframe,
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
index 7726de95be4891e4a821ec4e056482263f23ac05..bd17f63546dd2e3d3484aa9d46bae87274001a82 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
@@ -60,7 +60,7 @@ static void msm_hdmi_phy_reset(struct hdmi *hdmi)
}
}
-int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
+void msm_hdmi_hpd_enable(struct drm_bridge *bridge)
{
struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
struct hdmi *hdmi = hdmi_bridge->hdmi;
@@ -70,8 +70,8 @@ int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
unsigned long flags;
ret = pm_runtime_resume_and_get(dev);
- if (ret)
- return ret;
+ if (WARN_ON(ret))
+ return;
mutex_lock(&hdmi->state_mutex);
msm_hdmi_set_mode(hdmi, false);
@@ -99,12 +99,12 @@ int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
hdmi_write(hdmi, REG_HDMI_HPD_CTRL,
HDMI_HPD_CTRL_ENABLE | hpd_ctrl);
spin_unlock_irqrestore(&hdmi->reg_lock, flags);
-
- return 0;
}
-void msm_hdmi_hpd_disable(struct hdmi *hdmi)
+void msm_hdmi_hpd_disable(struct drm_bridge *bridge)
{
+ struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
+ struct hdmi *hdmi = hdmi_bridge->hdmi;
struct device *dev = &hdmi->pdev->dev;
/* Disable HPD interrupt */
--
2.39.5
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