diff options
Diffstat (limited to 'drivers/gpu/drm/stm/drv.c')
| -rw-r--r-- | drivers/gpu/drm/stm/drv.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c index 0a7f933ab007..5834ef56fbaa 100644 --- a/drivers/gpu/drm/stm/drv.c +++ b/drivers/gpu/drm/stm/drv.c @@ -129,6 +129,40 @@ static void drv_unload(struct drm_device *ddev) drm_mode_config_cleanup(ddev); } +static __maybe_unused int drv_suspend(struct device *dev) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct ltdc_device *ldev = ddev->dev_private; + struct drm_atomic_state *state; + + drm_kms_helper_poll_disable(ddev); + state = drm_atomic_helper_suspend(ddev); + if (IS_ERR(state)) { + drm_kms_helper_poll_enable(ddev); + return PTR_ERR(state); + } + ldev->suspend_state = state; + ltdc_suspend(ddev); + + return 0; +} + +static __maybe_unused int drv_resume(struct device *dev) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct ltdc_device *ldev = ddev->dev_private; + + ltdc_resume(ddev); + drm_atomic_helper_resume(ddev, ldev->suspend_state); + drm_kms_helper_poll_enable(ddev); + + return 0; +} + +static const struct dev_pm_ops drv_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(drv_suspend, drv_resume) +}; + static int stm_drm_platform_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -186,6 +220,7 @@ static struct platform_driver stm_drm_platform_driver = { .driver = { .name = "stm32-display", .of_match_table = drv_dt_ids, + .pm = &drv_pm_ops, }, }; |