linux-kernel - [PATCH v4 2/2] drm/bridge: anx7625: add suspend / resume hooks

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Message-Id: <20210514083804.3594748-2-pihsun@chromium.org>
Date:   Fri, 14 May 2021 16:37:43 +0800
From:   Pi-Hsun Shih <pihsun@...omium.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Pi-Hsun Shih <pihsun@...omium.org>,
        Tzung-Bi Shih <tzungbi@...gle.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, Xin Ji <xji@...logixsemi.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v4 2/2] drm/bridge: anx7625: add suspend / resume hooks

Add suspend / resume hooks for anx7625 driver, that power off the device
on suspend and power on the device on resume if it was previously
powered.

Signed-off-by: Pi-Hsun Shih <pihsun@...omium.org>
---

Changes from v2, v3:
* No change.

---
 drivers/gpu/drm/bridge/analogix/anx7625.c | 27 +++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index b0a53d6a2343..4f5537c9b3d4 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1707,7 +1707,34 @@ static int __maybe_unused anx7625_runtime_pm_resume(struct device *dev)
 	return 0;
 }
 
+static int __maybe_unused anx7625_resume(struct device *dev)
+{
+	struct anx7625_data *ctx = dev_get_drvdata(dev);
+
+	if (!ctx->pdata.intp_irq)
+		return 0;
+
+	if (!pm_runtime_enabled(dev) || !pm_runtime_suspended(dev))
+		anx7625_runtime_pm_resume(dev);
+
+	return 0;
+}
+
+static int __maybe_unused anx7625_suspend(struct device *dev)
+{
+	struct anx7625_data *ctx = dev_get_drvdata(dev);
+
+	if (!ctx->pdata.intp_irq)
+		return 0;
+
+	if (!pm_runtime_enabled(dev) || !pm_runtime_suspended(dev))
+		anx7625_runtime_pm_suspend(dev);
+
+	return 0;
+}
+
 static const struct dev_pm_ops anx7625_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(anx7625_suspend, anx7625_resume)
 	SET_RUNTIME_PM_OPS(anx7625_runtime_pm_suspend,
 			   anx7625_runtime_pm_resume, NULL)
 };
-- 
2.31.1.751.gd2f1c929bd-goog