linux-kernel - [PATCH v7 05/15] drm/bridge: analogix_dp: Remove CONFIG_PM related check in analogix_dp_bind()/analogix_dp

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Message-Id: <20250224081325.96724-6-damon.ding@rock-chips.com>
Date: Mon, 24 Feb 2025 16:13:15 +0800
From: Damon Ding <damon.ding@...k-chips.com>
To: heiko@...ech.de
Cc: andy.yan@...k-chips.com,
	hjc@...k-chips.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
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	cristian.ciocaltea@...labora.com,
	boris.brezillon@...labora.com,
	l.stach@...gutronix.de,
	dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
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	linux-kernel@...r.kernel.org,
	Damon Ding <damon.ding@...k-chips.com>
Subject: [PATCH v7 05/15] drm/bridge: analogix_dp: Remove CONFIG_PM related check in analogix_dp_bind()/analogix_dp_unbind()

Remove the check related to CONFIG_PM in order to make the code more
concise, as the CONFIG_PM should be a required option for many drivers.

In addition, it is preferable to use devm_pm_runtime_enable() instead of
manually invoking pm_runtime_enable() followed by pm_runtime_disable().

Signed-off-by: Damon Ding <damon.ding@...k-chips.com>
---
 .../drm/bridge/analogix/analogix_dp_core.c    | 30 ++++---------------
 1 file changed, 6 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index d9dafb038e7a..174e7011bba9 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1698,15 +1698,11 @@ int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev)
 	dp->drm_dev = drm_dev;
 	dp->encoder = dp->plat_data->encoder;
 
-	if (IS_ENABLED(CONFIG_PM)) {
-		pm_runtime_use_autosuspend(dp->dev);
-		pm_runtime_set_autosuspend_delay(dp->dev, 100);
-		pm_runtime_enable(dp->dev);
-	} else {
-		ret = analogix_dp_resume(dp);
-		if (ret)
-			return ret;
-	}
+	pm_runtime_use_autosuspend(dp->dev);
+	pm_runtime_set_autosuspend_delay(dp->dev, 100);
+	ret = devm_pm_runtime_enable(dp->dev);
+	if (ret)
+		return ret;
 
 	dp->aux.name = "DP-AUX";
 	dp->aux.transfer = analogix_dpaux_transfer;
@@ -1716,7 +1712,7 @@ int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev)
 	ret = drm_dp_aux_register(&dp->aux);
 	if (ret) {
 		DRM_ERROR("failed to register AUX (%d)\n", ret);
-		goto err_disable_pm_runtime;
+		return ret;
 	}
 
 	ret = analogix_dp_create_bridge(drm_dev, dp);
@@ -1729,13 +1725,6 @@ int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev)
 
 err_unregister_aux:
 	drm_dp_aux_unregister(&dp->aux);
-err_disable_pm_runtime:
-	if (IS_ENABLED(CONFIG_PM)) {
-		pm_runtime_dont_use_autosuspend(dp->dev);
-		pm_runtime_disable(dp->dev);
-	} else {
-		analogix_dp_suspend(dp);
-	}
 
 	return ret;
 }
@@ -1752,13 +1741,6 @@ void analogix_dp_unbind(struct analogix_dp_device *dp)
 	}
 
 	drm_dp_aux_unregister(&dp->aux);
-
-	if (IS_ENABLED(CONFIG_PM)) {
-		pm_runtime_dont_use_autosuspend(dp->dev);
-		pm_runtime_disable(dp->dev);
-	} else {
-		analogix_dp_suspend(dp);
-	}
 }
 EXPORT_SYMBOL_GPL(analogix_dp_unbind);
 
-- 
2.34.1