xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/stm: add sleep power management

Browse Source 
Implements system sleep power management ops.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1553156120-13851-1-git-send-email-yannick.fertre@st.com
This commit is contained in:
Yannick Fertré
2019-03-21 09:15:20 +01:00
committed by Benjamin Gaignard
parent 1861a1ffbc
commit df61c77665
3 changed files with 62 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/gpu/drm/stm/drv.c
View File

@@ -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,
},
};