diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index 9a13f47022df..1b6b15708b96 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -3012,7 +3012,7 @@ static int trigger_hpd_mst_set(void *data, u64 val) if (!aconnector->dc_link) continue; - if (!(aconnector->port && &aconnector->mst_port->mst_mgr)) + if (!aconnector->mst_port) continue; link = aconnector->dc_link; @@ -3077,6 +3077,37 @@ static int force_timing_sync_get(void *data, u64 *val) DEFINE_DEBUGFS_ATTRIBUTE(force_timing_sync_ops, force_timing_sync_get, force_timing_sync_set, "%llu\n"); + +/* + * Disables all HPD and HPD RX interrupt handling in the + * driver when set to 1. Default is 0. + */ +static int disable_hpd_set(void *data, u64 val) +{ + struct amdgpu_device *adev = data; + + adev->dm.disable_hpd_irq = (bool)val; + + return 0; +} + + +/* + * Returns 1 if HPD and HPRX interrupt handling is disabled, + * 0 otherwise. + */ +static int disable_hpd_get(void *data, u64 *val) +{ + struct amdgpu_device *adev = data; + + *val = adev->dm.disable_hpd_irq; + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(disable_hpd_ops, disable_hpd_get, + disable_hpd_set, "%llu\n"); + /* * Sets the DC visual confirm debug option from the given string. * Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_visual_confirm @@ -3213,4 +3244,8 @@ void dtn_debugfs_init(struct amdgpu_device *adev) debugfs_create_file_unsafe("amdgpu_dm_dcc_en", 0644, root, adev, &dcc_en_bits_fops); + + debugfs_create_file_unsafe("amdgpu_dm_disable_hpd", 0644, root, adev, + &disable_hpd_ops); + } |