diff options
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 84ad34f71244..ab73e1a82b15 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1540,6 +1540,26 @@ out: return ret; } +static int analogix_dpaux_wait_hpd_asserted(struct drm_dp_aux *aux, unsigned long wait_us) +{ + struct analogix_dp_device *dp = to_dp(aux); + int val; + int ret; + + if (dp->force_hpd) + return 0; + + pm_runtime_get_sync(dp->dev); + + ret = readx_poll_timeout(analogix_dp_get_plug_in_status, dp, val, !val, + wait_us / 100, wait_us); + + pm_runtime_mark_last_busy(dp->dev); + pm_runtime_put_autosuspend(dp->dev); + + return ret; +} + struct analogix_dp_device * analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data) { @@ -1648,6 +1668,7 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data) dp->aux.name = "DP-AUX"; dp->aux.transfer = analogix_dpaux_transfer; + dp->aux.wait_hpd_asserted = analogix_dpaux_wait_hpd_asserted; dp->aux.dev = dp->dev; drm_dp_aux_init(&dp->aux); |