Commit f0525a1c authored by Leonard Crestez's avatar Leonard Crestez Committed by Stefan Agner
Browse files

drm/mxsfb: Add PM_SLEEP support 



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: default avatarLeonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: default avatarStefan Agner <stefan@agner.ch>
Reviewed-by: default avatarSean Paul <seanpaul@chromium.org>
Signed-off-by: default avatarStefan Agner <stefan@agner.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/cfa1a4083eefd112362e640deeb2e120584ac3f5.1537191359.git.leonard.crestez@nxp.com
parent 4201f4e8

drivers/gpu/drm/mxsfb/mxsfb_drv.c

+21 −0
Original line number Diff line number Diff line
@@ -418,6 +418,26 @@ static int mxsfb_remove(struct platform_device *pdev) 
	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,
@@ -425,6 +445,7 @@ static struct platform_driver mxsfb_platform_driver = { 
	.driver	= {

		.name		= "mxsfb",

		.of_match_table	= mxsfb_dt_ids,

		.pm		= &mxsfb_pm_ops,

	},

};