No functional change. This patch only splits the xe_display_pm suspend/resume functions in the regular suspend/resume from the runtime/d3cold ones. The goal is to continue with a clean-up on the sequences that might not be needed on runtime, even for D3cold. But, for now, bring them to a separate place where it can be easily seen and scrutinized. Cc: Imre Deak <imre.deak@xxxxxxxxx> Cc: Vinod Govindapillai <vinod.govindapillai@xxxxxxxxx> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> --- drivers/gpu/drm/xe/display/xe_display.c | 83 +++++++++++++++++++------ drivers/gpu/drm/xe/display/xe_display.h | 8 +-- drivers/gpu/drm/xe/xe_pm.c | 8 +-- 3 files changed, 72 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c index 75736faf2a80..c93b753fc88e 100644 --- a/drivers/gpu/drm/xe/display/xe_display.c +++ b/drivers/gpu/drm/xe/display/xe_display.c @@ -308,22 +308,78 @@ static void xe_display_flush_cleanup_work(struct xe_device *xe) } } -/* TODO: System and runtime suspend/resume sequences will be sanitized as a follow-up. */ +/* TODO: Sanitize D3Cold bringing it to a minimal possible sequence */ +static void xe_display_to_d3cold(struct xe_device *xe) +{ + struct intel_display *display = &xe->display; + + /* + * We do a lot of poking in a lot of registers, make sure they work + * properly. + */ + intel_power_domains_disable(xe); + intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_SUSPENDED, true); + + xe_display_flush_cleanup_work(xe); + + intel_dp_mst_suspend(xe); + + intel_hpd_cancel_work(xe); + + intel_opregion_suspend(display, PCI_D3cold); + + intel_dmc_suspend(xe); +} + +static void xe_display_from_d3cold(struct xe_device *xe) +{ + struct intel_display *display = &xe->display; + + intel_dmc_resume(xe); + + if (has_display(xe)) + drm_mode_config_reset(&xe->drm); + + intel_display_driver_init_hw(xe); + intel_hpd_init(xe); + + /* MST sideband requires HPD interrupts enabled */ + intel_dp_mst_resume(xe); + + intel_opregion_resume(display); + + intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_RUNNING, false); + + intel_power_domains_enable(xe); +} + void xe_display_pm_runtime_suspend(struct xe_device *xe) { if (!xe->info.probe_display) return; if (xe->d3cold.allowed) - xe_display_pm_suspend(xe, true); + xe_display_to_d3cold(xe); intel_hpd_poll_enable(xe); } -void xe_display_pm_suspend(struct xe_device *xe, bool runtime) +void xe_display_pm_runtime_resume(struct xe_device *xe) +{ + if (!xe->info.probe_display) + return; + + intel_hpd_poll_disable(xe); + + if (xe->d3cold.allowed) + xe_display_from_d3cold(xe); +} + +void xe_display_pm_suspend(struct xe_device *xe) { struct intel_display *display = &xe->display; bool s2idle = suspend_to_idle(); + if (!xe->info.probe_display) return; @@ -333,7 +389,7 @@ void xe_display_pm_suspend(struct xe_device *xe, bool runtime) */ intel_power_domains_disable(xe); intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_SUSPENDED, true); - if (!runtime && has_display(xe)) { + if (has_display(xe)) { drm_kms_helper_poll_disable(&xe->drm); intel_display_driver_disable_user_access(xe); intel_display_driver_suspend(xe); @@ -345,7 +401,7 @@ void xe_display_pm_suspend(struct xe_device *xe, bool runtime) intel_hpd_cancel_work(xe); - if (!runtime && has_display(xe)) { + if (has_display(xe)) { intel_display_driver_suspend_access(xe); intel_encoder_suspend_all(&xe->display); } @@ -366,17 +422,6 @@ void xe_display_pm_suspend_late(struct xe_device *xe) intel_display_power_suspend_late(xe); } -void xe_display_pm_runtime_resume(struct xe_device *xe) -{ - if (!xe->info.probe_display) - return; - - intel_hpd_poll_disable(xe); - - if (xe->d3cold.allowed) - xe_display_pm_resume(xe, true); -} - void xe_display_pm_resume_early(struct xe_device *xe) { if (!xe->info.probe_display) @@ -387,7 +432,7 @@ void xe_display_pm_resume_early(struct xe_device *xe) intel_power_domains_resume(xe); } -void xe_display_pm_resume(struct xe_device *xe, bool runtime) +void xe_display_pm_resume(struct xe_device *xe) { struct intel_display *display = &xe->display; @@ -402,12 +447,12 @@ void xe_display_pm_resume(struct xe_device *xe, bool runtime) intel_display_driver_init_hw(xe); intel_hpd_init(xe); - if (!runtime && has_display(xe)) + if (has_display(xe)) intel_display_driver_resume_access(xe); /* MST sideband requires HPD interrupts enabled */ intel_dp_mst_resume(xe); - if (!runtime && has_display(xe)) { + if (has_display(xe)) { intel_display_driver_resume(xe); drm_kms_helper_poll_enable(&xe->drm); intel_display_driver_enable_user_access(xe); diff --git a/drivers/gpu/drm/xe/display/xe_display.h b/drivers/gpu/drm/xe/display/xe_display.h index 53d727fd792b..bed55fd26f30 100644 --- a/drivers/gpu/drm/xe/display/xe_display.h +++ b/drivers/gpu/drm/xe/display/xe_display.h @@ -34,10 +34,10 @@ void xe_display_irq_enable(struct xe_device *xe, u32 gu_misc_iir); void xe_display_irq_reset(struct xe_device *xe); void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt); -void xe_display_pm_suspend(struct xe_device *xe, bool runtime); +void xe_display_pm_suspend(struct xe_device *xe); void xe_display_pm_suspend_late(struct xe_device *xe); void xe_display_pm_resume_early(struct xe_device *xe); -void xe_display_pm_resume(struct xe_device *xe, bool runtime); +void xe_display_pm_resume(struct xe_device *xe); void xe_display_pm_runtime_suspend(struct xe_device *xe); void xe_display_pm_runtime_resume(struct xe_device *xe); @@ -65,10 +65,10 @@ static inline void xe_display_irq_enable(struct xe_device *xe, u32 gu_misc_iir) static inline void xe_display_irq_reset(struct xe_device *xe) {} static inline void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt) {} -static inline void xe_display_pm_suspend(struct xe_device *xe, bool runtime) {} +static inline void xe_display_pm_suspend(struct xe_device *xe) {} static inline void xe_display_pm_suspend_late(struct xe_device *xe) {} static inline void xe_display_pm_resume_early(struct xe_device *xe) {} -static inline void xe_display_pm_resume(struct xe_device *xe, bool runtime) {} +static inline void xe_display_pm_resume(struct xe_device *xe) {} static inline void xe_display_pm_runtime_suspend(struct xe_device *xe) {} static inline void xe_display_pm_runtime_resume(struct xe_device *xe) {} diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c index 2600c936527e..da68cd689a96 100644 --- a/drivers/gpu/drm/xe/xe_pm.c +++ b/drivers/gpu/drm/xe/xe_pm.c @@ -116,7 +116,7 @@ int xe_pm_suspend(struct xe_device *xe) for_each_gt(gt, xe, id) xe_gt_suspend_prepare(gt); - xe_display_pm_suspend(xe, false); + xe_display_pm_suspend(xe); /* FIXME: Super racey... */ err = xe_bo_evict_all(xe); @@ -126,7 +126,7 @@ int xe_pm_suspend(struct xe_device *xe) for_each_gt(gt, xe, id) { err = xe_gt_suspend(gt); if (err) { - xe_display_pm_resume(xe, false); + xe_display_pm_resume(xe); goto err; } } @@ -180,7 +180,7 @@ int xe_pm_resume(struct xe_device *xe) for_each_gt(gt, xe, id) xe_gt_resume(gt); - xe_display_pm_resume(xe, false); + xe_display_pm_resume(xe); err = xe_bo_restore_user(xe); if (err) @@ -409,7 +409,7 @@ int xe_pm_runtime_suspend(struct xe_device *xe) xe_display_pm_suspend_late(xe); out: if (err) - xe_display_pm_resume(xe, true); + xe_display_pm_runtime_resume(xe); xe_rpm_lockmap_release(xe); xe_pm_write_callback_task(xe, NULL); return err; -- 2.46.0