From: Daniel Mack Date: Mon, 28 May 2018 21:53:38 +0200 Subject: drm/msm: call drm_atomic_helper_suspend() and drm_atomic_helper_resume() Git-commit: ec446d09366cea199214b30810e368c5178841cd Patch-mainline: v4.19-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 To make suspend and resume work on msm8916 platforms, call into the generic helpers and preserve the state across suspends. Signed-off-by: Daniel Mack Signed-off-by: Rob Clark Acked-by: Petr Tesarik --- drivers/gpu/drm/msm/msm_drv.c | 9 +++++++++ drivers/gpu/drm/msm/msm_drv.h | 1 + 2 files changed, 10 insertions(+) --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -894,16 +894,25 @@ static struct drm_driver msm_driver = { static int msm_pm_suspend(struct device *dev) { struct drm_device *ddev = dev_get_drvdata(dev); + struct msm_drm_private *priv = ddev->dev_private; drm_kms_helper_poll_disable(ddev); + priv->pm_state = drm_atomic_helper_suspend(ddev); + if (IS_ERR(priv->pm_state)) { + drm_kms_helper_poll_enable(ddev); + return PTR_ERR(priv->pm_state); + } + return 0; } static int msm_pm_resume(struct device *dev) { struct drm_device *ddev = dev_get_drvdata(dev); + struct msm_drm_private *priv = ddev->dev_private; + drm_atomic_helper_resume(ddev, priv->pm_state); drm_kms_helper_poll_enable(ddev); return 0; --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -150,6 +150,7 @@ struct msm_drm_private { struct shrinker shrinker; struct msm_vblank_ctrl vblank_ctrl; + struct drm_atomic_state *pm_state; }; struct msm_format {