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| author | Thierry Reding <treding@nvidia.com> | 2014-12-18 19:15:25 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2015-01-27 12:14:58 +0300 |
| commit | 359ae687dbd16c76f5519a5750444f5a3b00ad18 (patch) | |
| tree | ac1ed7e54cff8e8609e4414f39b12cf7123b366e /drivers/gpu/drm/tegra | |
| parent | 666cb873328b5075eb511662858bab02d084ff64 (diff) | |
| download | linux-359ae687dbd16c76f5519a5750444f5a3b00ad18.tar.xz | |
drm/tegra: Add minimal power management
For now only disable the KMS hotplug polling helper logic upon suspend
and re-enable it on resume.
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Mark Zhang <markz@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra')
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 0edfb5e0b374..5bccb20889f7 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -996,6 +996,30 @@ static int host1x_drm_remove(struct host1x_device *dev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int host1x_drm_suspend(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + + drm_kms_helper_poll_disable(drm); + + return 0; +} + +static int host1x_drm_resume(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + + drm_kms_helper_poll_enable(drm); + + return 0; +} +#endif + +static const struct dev_pm_ops host1x_drm_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(host1x_drm_suspend, host1x_drm_resume) +}; + static const struct of_device_id host1x_drm_subdevs[] = { { .compatible = "nvidia,tegra20-dc", }, { .compatible = "nvidia,tegra20-hdmi", }, @@ -1017,6 +1041,7 @@ static const struct of_device_id host1x_drm_subdevs[] = { static struct host1x_driver host1x_drm_driver = { .driver = { .name = "drm", + .pm = &host1x_drm_pm_ops, }, .probe = host1x_drm_probe, .remove = host1x_drm_remove, |