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drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time 

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

Tested-by: Caesar Wang <wxt@rock-chips.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
This commit is contained in:
Yakir Yang 2016-02-15 19:11:37 +08:00
parent 398a399534
commit 211f276ed3
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
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@ -1400,6 +1400,12 @@ int analogix_dp_suspend(struct device *dev)
struct analogix_dp_device *dp = dev_get_drvdata(dev); struct analogix_dp_device *dp = dev_get_drvdata(dev);
clk_disable_unprepare(dp->clock); 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; return 0;
} }
EXPORT_SYMBOL_GPL(analogix_dp_suspend); EXPORT_SYMBOL_GPL(analogix_dp_suspend);
@ -1415,6 +1421,13 @@ int analogix_dp_resume(struct device *dev)
return ret; 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; return 0;
} }
EXPORT_SYMBOL_GPL(analogix_dp_resume); EXPORT_SYMBOL_GPL(analogix_dp_resume);