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Signed-off-by: Mohit Dsor --- drivers/gpu/drm/bridge/lontium-lt9611c.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611c.c b/drivers/gpu/drm/bridge/lontium-lt9611c.c index 81ca9d62eae3..30a07e97626a 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611c.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611c.c @@ -923,6 +923,23 @@ static void lt9611c_hdmi_audio_shutdown(struct drm_bridge *bridge, drm_atomic_helper_connector_hdmi_clear_audio_infoframe(connector); } +static void lt9611c_bridge_hpd_enable(struct drm_bridge *bridge) +{ + struct lt9611c *lt9611c = bridge_to_lt9611c(bridge); + u8 cmd[5] = {0x52, 0x48, 0x31, 0x3a, 0x00}; + u8 data[5]; + int ret; + + mutex_lock(<9611c->ocm_lock); + ret = lt9611c_read_write_flow(lt9611c, cmd, ARRAY_SIZE(cmd), + data, ARRAY_SIZE(data)); + if (!ret) + lt9611c->hdmi_connected = (data[4] == 0x02); + mutex_unlock(<9611c->ocm_lock); + + schedule_work(<9611c->work); +} + static int lt9611c_hdmi_audio_startup(struct drm_bridge *bridge, struct drm_connector *connector) { @@ -939,6 +956,7 @@ static const struct drm_bridge_funcs lt9611c_bridge_funcs = { .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_reset = drm_atomic_helper_bridge_reset, + .hpd_enable = lt9611c_bridge_hpd_enable, .hdmi_tmds_char_rate_valid = lt9611c_hdmi_tmds_char_rate_valid, .hdmi_write_avi_infoframe = lt9611c_hdmi_write_avi_infoframe, -- 2.34.1