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drm/bridge: analogix_dp: Ensure edp is disabled when shutting down the panel

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When panel is shut down, we should make sure edp can be disabled to avoid
undefined behavior.

Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-8-enric.balletbo@collabora.com
This commit is contained in:
Lin Huang 2018-04-23 12:49:43 +02:00 committed by Andrzej Hajda
parent d79acb5932
commit 63872659fc
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
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@ -1160,6 +1160,12 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
pm_runtime_get_sync(dp->dev);
ret = clk_prepare_enable(dp->clock);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the clock clk [%d]\n", ret);
goto out_dp_clk_pre;
}
if (dp->plat_data->power_on)
dp->plat_data->power_on(dp->plat_data);
@ -1191,6 +1197,8 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
phy_power_off(dp->phy);
if (dp->plat_data->power_off)
dp->plat_data->power_off(dp->plat_data);
clk_disable_unprepare(dp->clock);
out_dp_clk_pre:
pm_runtime_put_sync(dp->dev);
return ret;
@ -1233,11 +1241,14 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
}
disable_irq(dp->irq);
analogix_dp_set_analog_power_down(dp, POWER_ALL, 1);
phy_power_off(dp->phy);
if (dp->plat_data->power_off)
dp->plat_data->power_off(dp->plat_data);
clk_disable_unprepare(dp->clock);
pm_runtime_put_sync(dp->dev);
ret = analogix_dp_prepare_panel(dp, false, true);