From d4877cf2293f5463f531769fd12300cb3417c778 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 4 Dec 2009 16:56:37 -0500 Subject: drm/radeon/kms: enable hpd support This enabled interrupt driven hpd support for all radeon chips. Assuming the hpd pin is wired up correctly, the driver will generate uevents on digital monitor connect and disconnect and retrain DP monitors automatically. Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/atombios_dp.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/gpu/drm/radeon/atombios_dp.c') diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 784ba80..0d63c44 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -507,6 +507,18 @@ static bool atom_dp_get_link_status(struct radeon_connector *radeon_connector, return true; } +bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector) +{ + struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv; + u8 link_status[DP_LINK_STATUS_SIZE]; + + if (!atom_dp_get_link_status(radeon_connector, link_status)) + return false; + if (dp_channel_eq_ok(link_status, dig_connector->dp_lane_count)) + return false; + return true; +} + static void dp_set_power(struct radeon_connector *radeon_connector, u8 power_state) { struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv; -- cgit v1.1