diff options
| author | Roman Li <Roman.Li@amd.com> | 2024-08-21 10:53:15 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-09-18 16:15:07 -0400 |
| commit | 5a3d3e11349c2e298c0b6b4d37c8241f44d37e3d (patch) | |
| tree | 3bc4a1eecc98e01647e3ff05ba5dea9dc8fcca9d /drivers/gpu | |
| parent | d18a56b247f4f3f7dbdd3adeeebd05c23f1e3d3e (diff) | |
| download | linux-stable-5a3d3e11349c2e298c0b6b4d37c8241f44d37e3d.tar.gz linux-stable-5a3d3e11349c2e298c0b6b4d37c8241f44d37e3d.tar.bz2 linux-stable-5a3d3e11349c2e298c0b6b4d37c8241f44d37e3d.zip | |
drm/amd/display: Add dmub hpd sense callback
[WHY]
HPD sense notification has been implemented in DMUB, which
can occur during low power states and need to be
notified from firmware to driver.
[HOW]
Define callback and register new HPD sense notification.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 2 |
2 files changed, 21 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 0cff66735cfe..4ab329e00714 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -808,6 +808,20 @@ static void dmub_hpd_callback(struct amdgpu_device *adev, } /** + * dmub_hpd_sense_callback - DMUB HPD sense processing callback. + * @adev: amdgpu_device pointer + * @notify: dmub notification structure + * + * HPD sense changes can occur during low power states and need to be + * notified from firmware to driver. + */ +static void dmub_hpd_sense_callback(struct amdgpu_device *adev, + struct dmub_notification *notify) +{ + DRM_DEBUG_DRIVER("DMUB HPD SENSE callback.\n"); +} + +/** * register_dmub_notify_callback - Sets callback for DMUB notify * @adev: amdgpu_device pointer * @type: Type of dmub notification @@ -3808,6 +3822,12 @@ static int register_hpd_handlers(struct amdgpu_device *adev) DRM_ERROR("amdgpu: fail to register dmub hpd callback"); return -EINVAL; } + + if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD_SENSE_NOTIFY, + dmub_hpd_sense_callback, true)) { + DRM_ERROR("amdgpu: fail to register dmub hpd sense callback"); + return -EINVAL; + } } list_for_each_entry(connector, diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 2d7755e2b6c3..15d4690c74d6 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -50,7 +50,7 @@ #define AMDGPU_DM_MAX_NUM_EDP 2 -#define AMDGPU_DMUB_NOTIFICATION_MAX 6 +#define AMDGPU_DMUB_NOTIFICATION_MAX 7 #define HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_IEEE_REGISTRATION_ID 0x00001A #define AMD_VSDB_VERSION_3_FEATURECAP_REPLAYMODE 0x40 |