[PATCH v11 18/19] drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time

Yakir Yang
2015-12-16T03:59:46Z

Turn off the panel power in suspend time would help to reduce
power waste.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
Changes in v11: None
Changes in v10: None
Changes in v9: None
Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index d18054d..bc4a9e0 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1357,6 +1357,12 @@ int analogix_dp_suspend(struct device *dev)
struct analogix_dp_device *dp = dev_get_drvdata(dev);

clk_disable_unprepare(dp->clock);
+
+ if (dp->plat_data->panel) {
+ if (drm_panel_unprepare(dp->plat_data->panel))
+ DRM_ERROR("failed to turnoff the panel\n");
+ }
+
return 0;
}
EXPORT_SYMBOL_GPL(analogix_dp_suspend);
@@ -1372,6 +1378,13 @@ int analogix_dp_resume(struct device *dev)
return ret;
}

+ if (dp->plat_data->panel) {
+ if (drm_panel_prepare(dp->plat_data->panel)) {
+ DRM_ERROR("failed to setup the panel\n");
+ return -EBUSY;
+ }
+ }
+
return 0;
}
EXPORT_SYMBOL_GPL(analogix_dp_resume);
--
1.9.1

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