lkml.org 
[lkml]   [2018]   [Aug]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 4/5] drm/mxsfb: Add PM_SLEEP support
Date
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
\
 
 \ /
  Last update: 2018-08-08 18:10    [W:0.067 / U:8.828 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site