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| author |  Roman Li <Roman.Li@amd.com>
| 2022-02-02 14:30:09 -0500 |
|---|---|---|
| committer |  Alex Deucher <alexander.deucher@amd.com>
| 2022-02-09 15:09:42 -0500 |
| commit | 328e34a5ad227399391891d454043e5d73e598d2 (patch) | |
| tree | d97ca4cf0e6809e19ab3ddc77bbb81bede5bb9c7 /drivers/gpu | |
| parent | drm/amdgpu: add utcl2_harvest to gc 10.3.1 (diff) | |
| download | linux-328e34a5ad227399391891d454043e5d73e598d2.tar.gz linux-328e34a5ad227399391891d454043e5d73e598d2.tar.bz2 linux-328e34a5ad227399391891d454043e5d73e598d2.zip | |
drm/amd/display: Cap pflip irqs per max otg number
[Why]
pflip interrupt order are mapped 1 to 1 to otg id.
e.g. if irq_src=26 corresponds to otg0 then 27->otg1, 28->otg2...
Linux DM registers pflip interrupts per number of crtcs.
In fused pipe case crtc numbers can be less than otg id.
e.g. if one pipe out of 3(otg#0-2) is fused adev->mode_info.num_crtc=2
so DM only registers irq_src 26,27.
This is a bug since if pipe#2 remains unfused DM never gets
otg2 pflip interrupt (irq_src=28)
That may results in gfx failure due to pflip timeout.
[How]
Register pflip interrupts per max num of otg instead of num_crtc
Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@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 | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 1 |
3 files changed, 4 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 7f9773f8dab6..7c1c623ba799 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3653,7 +3653,7 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev) /* Use GRPH_PFLIP interrupt */ for (i = DCN_1_0__SRCID__HUBP0_FLIP_INTERRUPT; - i <= DCN_1_0__SRCID__HUBP0_FLIP_INTERRUPT + adev->mode_info.num_crtc - 1; + i <= DCN_1_0__SRCID__HUBP0_FLIP_INTERRUPT + dc->caps.max_otg_num - 1; i++) { r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_DCE, i, &adev->pageflip_irq); if (r) { diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 6f5528d34093..d18e9f3ea998 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1220,6 +1220,8 @@ struct dc *dc_create(const struct dc_init_data *init_params) dc->caps.max_dp_protocol_version = DP_VERSION_1_4; + dc->caps.max_otg_num = dc->res_pool->res_cap->num_timing_generator; + if (dc->res_pool->dmcu != NULL) dc->versions.dmcu_version = dc->res_pool->dmcu->dmcu_version; } diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 288e7b01f561..b51864890621 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -202,6 +202,7 @@ struct dc_caps { bool edp_dsc_support; bool vbios_lttpr_aware; bool vbios_lttpr_enable; + uint32_t max_otg_num; }; struct dc_bug_wa { |