From: Leonard Crestez <leonard.crestez@nxp.com>
To: Stefan Agner <stefan@agner.ch>, Marek Vasut <marex@denx.de>,
Shawn Guo <shawnguo@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>,
Robert Chiras <robert.chiras@nxp.com>,
Fabio Estevam <fabio.estevam@nxp.com>,
Anson Huang <Anson.Huang@nxp.com>,
dri-devel@lists.freedesktop.org,
Dong Aisheng <aisheng.dong@nxp.com>,
linux-imx@nxp.com, kernel@pengutronix.de,
linux-kernel@vger.kernel.org
Subject: [PATCH v4 4/5] drm/mxsfb: Add PM_SLEEP support
Date: Wed, 8 Aug 2018 19:09:01 +0300 [thread overview]
Message-ID: <3559b9b99a8a48042ee468034e5f1d538ffbd081.1533743954.git.leonard.crestez@nxp.com> (raw)
In-Reply-To: <cover.1533743954.git.leonard.crestez@nxp.com>
Since power to the lcdif block can be lost on suspend implement
PM_SLEEP_OPS using drm_mode_config_helper_suspend/resume to save/restore
the current mode.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
---
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 68d79f5dc0d3..d797dfd40d98 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -416,17 +416,38 @@ static int mxsfb_remove(struct platform_device *pdev)
drm_dev_unref(drm);
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int mxsfb_suspend(struct device *dev)
+{
+ struct drm_device *drm = dev_get_drvdata(dev);
+
+ return drm_mode_config_helper_suspend(drm);
+}
+
+static int mxsfb_resume(struct device *dev)
+{
+ struct drm_device *drm = dev_get_drvdata(dev);
+
+ return drm_mode_config_helper_resume(drm);
+}
+#endif
+
+static const struct dev_pm_ops mxsfb_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(mxsfb_suspend, mxsfb_resume)
+};
+
static struct platform_driver mxsfb_platform_driver = {
.probe = mxsfb_probe,
.remove = mxsfb_remove,
.id_table = mxsfb_devtype,
.driver = {
.name = "mxsfb",
.of_match_table = mxsfb_dt_ids,
+ .pm = &mxsfb_pm_ops,
},
};
module_platform_driver(mxsfb_platform_driver);
--
2.17.1
next prev parent reply other threads:[~2018-08-08 16:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-08 16:08 [PATCH v4 0/5] drm/mxsfb: Fix runtime PM for unpowering lcdif block Leonard Crestez
2018-08-08 16:08 ` [PATCH v4 1/5] drm/mxsfb: Move axi clk enable/disable to crtc enable/disable Leonard Crestez
2018-08-08 18:57 ` Stefan Agner
2018-08-13 13:19 ` Leonard Crestez
2018-08-08 16:08 ` [PATCH v4 2/5] drm/mxsfb: Fix initial corrupt frame when activating display Leonard Crestez
2018-08-08 18:58 ` Stefan Agner
2018-08-08 16:09 ` [PATCH v4 3/5] drm/mxsfb: Add pm_runtime calls to pipe_enable/disable Leonard Crestez
2018-08-08 16:09 ` Leonard Crestez [this message]
2018-08-08 16:09 ` [PATCH v4 5/5] drm/mxsfb: Switch to drm_atomic_helper_commit_tail_rpm Leonard Crestez
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