From 70e0bd74b9a22ecaa25793bf4f461cf84a1f348a Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Mon, 13 Jul 2015 16:30:29 +0200 Subject: [PATCH] drm/i915: Make intel_display_suspend atomic, try 2. Calculate all state using a normal transition, but afterwards fudge crtc->state->active back to its old value. This should still allow state restore in setup_hw_state to work properly. Signed-off-by: Maarten Lankhorst Reviewed-by: Daniel Stone Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 52 ++++++++++++++++++++++++++-- drivers/gpu/drm/i915/intel_drv.h | 2 +- 2 files changed, 50 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index f9ed3732f95f..4e64dae78360 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6225,12 +6225,58 @@ static void intel_crtc_disable_noatomic(struct drm_crtc *crtc) * turn all crtc's off, but do not adjust state * This has to be paired with a call to intel_modeset_setup_hw_state. */ -void intel_display_suspend(struct drm_device *dev) +int intel_display_suspend(struct drm_device *dev) { + struct drm_mode_config *config = &dev->mode_config; + struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx; + struct drm_atomic_state *state; struct drm_crtc *crtc; + unsigned crtc_mask = 0; + int ret = 0; + + if (WARN_ON(!ctx)) + return 0; + + lockdep_assert_held(&ctx->ww_ctx); + state = drm_atomic_state_alloc(dev); + if (WARN_ON(!state)) + return -ENOMEM; + + state->acquire_ctx = ctx; + state->allow_modeset = true; + + for_each_crtc(dev, crtc) { + struct drm_crtc_state *crtc_state = + drm_atomic_get_crtc_state(state, crtc); - for_each_crtc(dev, crtc) - intel_crtc_disable_noatomic(crtc); + ret = PTR_ERR_OR_ZERO(crtc_state); + if (ret) + goto free; + + if (!crtc_state->active) + continue; + + crtc_state->active = false; + crtc_mask |= 1 << drm_crtc_index(crtc); + } + + if (crtc_mask) { + ret = intel_set_mode(state); + + if (!ret) { + for_each_crtc(dev, crtc) + if (crtc_mask & (1 << drm_crtc_index(crtc))) + crtc->state->active = true; + + return ret; + } + } + +free: + if (ret) + DRM_ERROR("Suspending crtc's failed with %i\n", ret); + drm_atomic_state_free(state); + return ret; } /* Master function to enable/disable CRTC and corresponding power wells */ diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 217b773e0673..f4abce103221 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -988,7 +988,7 @@ int intel_pch_rawclk(struct drm_device *dev); void intel_mark_busy(struct drm_device *dev); void intel_mark_idle(struct drm_device *dev); void intel_crtc_restore_mode(struct drm_crtc *crtc); -void intel_display_suspend(struct drm_device *dev); +int intel_display_suspend(struct drm_device *dev); int intel_crtc_control(struct drm_crtc *crtc, bool enable); void intel_crtc_update_dpms(struct drm_crtc *crtc); void intel_encoder_destroy(struct drm_encoder *encoder); -- 2.39.5