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| author | Leonard Crestez <leonard.crestez@nxp.com> | 2018-09-17 16:42:14 +0300 |
|---|---|---|
| committer | Stefan Agner <stefan@agner.ch> | 2018-09-26 22:07:40 +0200 |
| commit | f0525a1c922eefe8cb1a23a026ea90bad400797e (patch) | |
| tree | 5886f8809630d2903524cf50f078e0215d9e9585 /drivers/gpu/drm | |
| parent | 4201f4e8484509499a40feb9fd6a6642f453f61e (diff) | |
| download | lwn-f0525a1c922eefe8cb1a23a026ea90bad400797e.tar.gz lwn-f0525a1c922eefe8cb1a23a026ea90bad400797e.zip | |
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: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/cfa1a4083eefd112362e640deeb2e120584ac3f5.1537191359.git.leonard.crestez@nxp.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/mxsfb/mxsfb_drv.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c index 68d79f5dc0d3..5199a1febc01 100644 --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c @@ -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, }, }; |