diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2013-04-11 12:45:34 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-05-13 15:02:18 +0100 |
| commit | fb0b82ae4ec8e67379b51ac4e5e34c90857298ad (patch) | |
| tree | 5e5e7085e97f4d45ee8defc1e146a9f6e05b0caf /drivers/gpu | |
| parent | 7766cdc32e03471a00dec6dd4cb487ceca811501 (diff) | |
drm/radeon/evergreen+: don't enable HPD interrupts on eDP/LVDS
commit 2e97be73e5f74a317232740ae82eb8f95326a660 upstream.
Avoids potential interrupt storms when the display is disabled.
May fix:
https://bugzilla.kernel.org/show_bug.cgi?id=56041
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 60d13fe4d67..0495a50309e 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -412,6 +412,16 @@ void evergreen_hpd_init(struct radeon_device *rdev) list_for_each_entry(connector, &dev->mode_config.connector_list, head) { struct radeon_connector *radeon_connector = to_radeon_connector(connector); + + if (connector->connector_type == DRM_MODE_CONNECTOR_eDP || + connector->connector_type == DRM_MODE_CONNECTOR_LVDS) { + /* don't try to enable hpd on eDP or LVDS avoid breaking the + * aux dp channel on imac and help (but not completely fix) + * https://bugzilla.redhat.com/show_bug.cgi?id=726143 + * also avoid interrupt storms during dpms. + */ + continue; + } switch (radeon_connector->hpd.hpd) { case RADEON_HPD_1: WREG32(DC_HPD1_CONTROL, tmp); |