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Message-ID: <1701472789-25951-3-git-send-email-quic_khsieh@quicinc.com>
Date: Fri, 1 Dec 2023 15:19:44 -0800
From: Kuogee Hsieh <quic_khsieh@...cinc.com>
To: <dri-devel@...ts.freedesktop.org>, <robdclark@...il.com>,
<sean@...rly.run>, <swboyd@...omium.org>, <dianders@...omium.org>,
<vkoul@...nel.org>, <daniel@...ll.ch>, <airlied@...il.com>,
<agross@...nel.org>, <dmitry.baryshkov@...aro.org>,
<andersson@...nel.org>
CC: Kuogee Hsieh <quic_khsieh@...cinc.com>,
<quic_abhinavk@...cinc.com>, <quic_jesszhan@...cinc.com>,
<quic_sbillaka@...cinc.com>, <marijn.suijten@...ainline.org>,
<freedreno@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH v9 2/7] drm/msm/dp: rename is_connected with link_ready
The is_connected flag is set to true after DP mainlink successfully
finishes link training to enter into ST_MAINLINK_READY state rather
than being set after the DP dongle is connected. Rename the
is_connected flag with link_ready flag to match the state of DP
driver's state machine.
Changes in v5:
-- reworded commit text according to review comments from change #4
Changes in v4:
-- reworded commit text
Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
drivers/gpu/drm/msm/dp/dp_display.c | 19 +++++++++----------
drivers/gpu/drm/msm/dp/dp_display.h | 2 +-
drivers/gpu/drm/msm/dp/dp_drm.c | 14 +++++++-------
3 files changed, 17 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 2110862..56f8d91 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -351,12 +351,11 @@ static void dp_display_send_hpd_event(struct msm_dp *dp_display)
drm_helper_hpd_irq_event(connector->dev);
}
-
static int dp_display_send_hpd_notification(struct dp_display_private *dp,
bool hpd)
{
- if ((hpd && dp->dp_display.is_connected) ||
- (!hpd && !dp->dp_display.is_connected)) {
+ if ((hpd && dp->dp_display.link_ready) ||
+ (!hpd && !dp->dp_display.link_ready)) {
drm_dbg_dp(dp->drm_dev, "HPD already %s\n",
(hpd ? "on" : "off"));
return 0;
@@ -370,7 +369,7 @@ static int dp_display_send_hpd_notification(struct dp_display_private *dp,
dp->panel->dpcd, dp->panel->downstream_ports);
}
- dp->dp_display.is_connected = hpd;
+ dp->dp_display.link_ready = hpd;
drm_dbg_dp(dp->drm_dev, "type=%d hpd=%d\n",
dp->dp_display.connector_type, hpd);
@@ -913,7 +912,7 @@ int dp_display_set_plugged_cb(struct msm_dp *dp_display,
dp_display->plugged_cb = fn;
dp_display->codec_dev = codec_dev;
- plugged = dp_display->is_connected;
+ plugged = dp_display->link_ready;
dp_display_handle_plugged_change(dp_display, plugged);
return 0;
@@ -1344,16 +1343,16 @@ static int dp_pm_resume(struct device *dev)
* also only signal audio when disconnected
*/
if (dp->link->sink_count) {
- dp->dp_display.is_connected = true;
+ dp->dp_display.link_ready = true;
} else {
- dp->dp_display.is_connected = false;
+ dp->dp_display.link_ready = false;
dp_display_handle_plugged_change(dp_display, false);
}
drm_dbg_dp(dp->drm_dev,
"After, type=%d sink=%d conn=%d core_init=%d phy_init=%d power=%d\n",
dp->dp_display.connector_type, dp->link->sink_count,
- dp->dp_display.is_connected, dp->core_initialized,
+ dp->dp_display.link_ready, dp->core_initialized,
dp->phy_initialized, dp_display->power_on);
mutex_unlock(&dp->event_mutex);
@@ -1741,8 +1740,8 @@ void dp_bridge_hpd_notify(struct drm_bridge *bridge,
return;
}
- if (!dp_display->is_connected && status == connector_status_connected)
+ if (!dp_display->link_ready && status == connector_status_connected)
dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0);
- else if (dp_display->is_connected && status == connector_status_disconnected)
+ else if (dp_display->link_ready && status == connector_status_disconnected)
dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
}
diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h
index 15dbd2f..46780af 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.h
+++ b/drivers/gpu/drm/msm/dp/dp_display.h
@@ -17,7 +17,7 @@ struct msm_dp {
struct drm_bridge *bridge;
struct drm_connector *connector;
struct drm_bridge *next_bridge;
- bool is_connected;
+ bool link_ready;
bool audio_enabled;
bool power_on;
unsigned int connector_type;
diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c
index 40e7344..f18cb6f 100644
--- a/drivers/gpu/drm/msm/dp/dp_drm.c
+++ b/drivers/gpu/drm/msm/dp/dp_drm.c
@@ -24,10 +24,10 @@ static enum drm_connector_status dp_bridge_detect(struct drm_bridge *bridge)
dp = to_dp_bridge(bridge)->dp_display;
- drm_dbg_dp(dp->drm_dev, "is_connected = %s\n",
- (dp->is_connected) ? "true" : "false");
+ drm_dbg_dp(dp->drm_dev, "link_ready = %s\n",
+ (dp->link_ready) ? "true" : "false");
- return (dp->is_connected) ? connector_status_connected :
+ return (dp->link_ready) ? connector_status_connected :
connector_status_disconnected;
}
@@ -40,8 +40,8 @@ static int dp_bridge_atomic_check(struct drm_bridge *bridge,
dp = to_dp_bridge(bridge)->dp_display;
- drm_dbg_dp(dp->drm_dev, "is_connected = %s\n",
- (dp->is_connected) ? "true" : "false");
+ drm_dbg_dp(dp->drm_dev, "link_ready = %s\n",
+ (dp->link_ready) ? "true" : "false");
/*
* There is no protection in the DRM framework to check if the display
@@ -55,7 +55,7 @@ static int dp_bridge_atomic_check(struct drm_bridge *bridge,
* After that this piece of code can be removed.
*/
if (bridge->ops & DRM_BRIDGE_OP_HPD)
- return (dp->is_connected) ? 0 : -ENOTCONN;
+ return (dp->link_ready) ? 0 : -ENOTCONN;
return 0;
}
@@ -78,7 +78,7 @@ static int dp_bridge_get_modes(struct drm_bridge *bridge, struct drm_connector *
dp = to_dp_bridge(bridge)->dp_display;
/* pluggable case assumes EDID is read when HPD */
- if (dp->is_connected) {
+ if (dp->link_ready) {
rc = dp_display_get_modes(dp);
if (rc <= 0) {
DRM_ERROR("failed to get DP sink modes, rc=%d\n", rc);
--
2.7.4
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