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drm/rockchip: cdn-dp: Load firmware if no monitor connected 

If no monitor is connected, suspend/resume cycles result in firmware
load errors because the driver attempts to load the firmware while
the system is in suspend state. This results in a kernel warning and
traceback.

Loading the firmware during boot fixes the problem. Note that we can not
just call schedule_work conditionally in cdn_dp_pd_event() if the insertion
status changed. The problem would still be seen if a monitor is connected
for the first time during suspend.

Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
This commit is contained in:
Guenter Roeck 2017-02-05 15:54:57 +08:00 committed by Mark Yao
parent 1a0f7ed3ab
commit 83c132ed46
1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/rockchip/cdn-dp-core.c
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@ -1021,7 +1021,6 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
struct cdn_dp_port *port;
struct drm_device *drm_dev = data;
int ret, i;
bool schedule_event = false;
ret = cdn_dp_parse_dt(dp);
if (ret < 0)
@ -1083,15 +1082,11 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
"register EXTCON_DISP_DP notifier err\n");
goto err_free_connector;
}
if (extcon_get_state(port->extcon, EXTCON_DISP_DP))
schedule_event = true;
}
pm_runtime_enable(dev);
if (schedule_event)
schedule_work(&dp->event_work);
schedule_work(&dp->event_work);
return 0;