From: Leo Li <sunpeng.li@xxxxxxx> [Why] On DCN hardware, the crtc_high_irq handler makes vupdate_high_irq handler redundant. All the vupdate handler does is handle vblank events, and update vrr for DCE hw (excluding VEGA, more on that later). As far as usermode is concerned. vstartup happens close enough to vupdate on DCN that it can be considered the "same". Handling vblank and updating vrr at vstartup effectively replaces vupdate on DCN. Vega is a bit special. Like DCN, the VRR registers on Vega are double-buffered, and swapped at vupdate. But Unlike DCN, it lacks a vstartup interrupt. This means we can't quite remove the vupdate handler for it, since delayed user events due to vrr are sent off there. [How] Remove registration of vupdate interrupt handler for DCN. Disable vupdate interrupt if asic family DCN, enable otherwise. Signed-off-by: Leo Li <sunpeng.li@xxxxxxx> --- v2: Don't exclude vega when enabling vupdate interrupts v3: Move FAMILY_AI check inside dm_set_vupdate_irq() v4: Correct a brain fart .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 32 +++---------------- 1 file changed, 4 insertions(+), 28 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 256a23a0ec28..d40185dfd0c0 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2241,34 +2241,6 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev) dm_dcn_crtc_high_irq, c_irq_params); } - /* Use VUPDATE_NO_LOCK interrupt on DCN, which seems to correspond to - * the regular VUPDATE interrupt on DCE. We want DC_IRQ_SOURCE_VUPDATEx - * to trigger at end of each vblank, regardless of state of the lock, - * matching DCE behaviour. - */ - for (i = DCN_1_0__SRCID__OTG0_IHC_V_UPDATE_NO_LOCK_INTERRUPT; - i <= DCN_1_0__SRCID__OTG0_IHC_V_UPDATE_NO_LOCK_INTERRUPT + adev->mode_info.num_crtc - 1; - i++) { - r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_DCE, i, &adev->vupdate_irq); - - if (r) { - DRM_ERROR("Failed to add vupdate irq id!\n"); - return r; - } - - int_params.int_context = INTERRUPT_HIGH_IRQ_CONTEXT; - int_params.irq_source = - dc_interrupt_to_irq_source(dc, i, 0); - - c_irq_params = &adev->dm.vupdate_params[int_params.irq_source - DC_IRQ_SOURCE_VUPDATE1]; - - c_irq_params->adev = adev; - c_irq_params->irq_src = int_params.irq_source; - - amdgpu_dm_irq_register_interrupt(adev, &int_params, - dm_vupdate_high_irq, c_irq_params); - } - /* 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; @@ -4249,6 +4221,10 @@ static inline int dm_set_vupdate_irq(struct drm_crtc *crtc, bool enable) struct amdgpu_device *adev = crtc->dev->dev_private; int rc; + /* Do not set vupdate for DCN hardware */ + if (adev->family > AMDGPU_FAMILY_AI) + return 0; + irq_source = IRQ_TYPE_VUPDATE + acrtc->otg_inst; rc = dc_interrupt_set(adev->dm.dc, irq_source, enable) ? 0 : -EBUSY; -- 2.23.0 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx