From 24218aacac65f5b731bbff8eeb09ea7847dda2ef Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sun, 12 Aug 2012 19:27:11 +0200 Subject: [PATCH] drm/i915: prepare load-detect pipe code for dpms changes A few things need adjustement: - Change the dpms state by calling the dpms connector function and not some crtc helper internal callbacks. Otherwise this will break once we switch to our own dpms handling. - Instead of tracking and restoring intel_crtc->dpms_mode use the connector's dpms variable - the former relies on the dpms compuation rules used by the crtc helper. And it would break when the encoder is cloned and the other output has a different dpms state. But luckily no one is crazy enough for that. - Properly clear the connector -> encoder -> crtc linking, even when failing (note that the crtc helper removes the encoder -> crtc link in disabled_unused_functions for us). Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 38 ++++++++++------------------ 1 file changed, 14 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a55f6642be20..f851474fe066 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5615,21 +5615,12 @@ bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, if (encoder->crtc) { crtc = encoder->crtc; - intel_crtc = to_intel_crtc(crtc); - old->dpms_mode = intel_crtc->dpms_mode; + old->dpms_mode = connector->dpms; old->load_detect_temp = false; /* Make sure the crtc and connector are running */ - if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) { - struct drm_encoder_helper_funcs *encoder_funcs; - struct drm_crtc_helper_funcs *crtc_funcs; - - crtc_funcs = crtc->helper_private; - crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); - - encoder_funcs = encoder->helper_private; - encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); - } + if (connector->dpms != DRM_MODE_DPMS_ON) + connector->funcs->dpms(connector, DRM_MODE_DPMS_ON); return true; } @@ -5657,7 +5648,7 @@ bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, connector->encoder = encoder; intel_crtc = to_intel_crtc(crtc); - old->dpms_mode = intel_crtc->dpms_mode; + old->dpms_mode = connector->dpms; old->load_detect_temp = true; old->release_fb = NULL; @@ -5682,22 +5673,25 @@ bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n"); if (IS_ERR(crtc->fb)) { DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n"); - crtc->fb = old_fb; - return false; + goto fail; } if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) { DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n"); if (old->release_fb) old->release_fb->funcs->destroy(old->release_fb); - crtc->fb = old_fb; - return false; + goto fail; } /* let the connector get through one full cycle before testing */ intel_wait_for_vblank(dev, intel_crtc->pipe); return true; +fail: + connector->encoder = NULL; + encoder->crtc = NULL; + crtc->fb = old_fb; + return false; } void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, @@ -5706,9 +5700,6 @@ void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, { struct drm_encoder *encoder = &intel_encoder->base; struct drm_device *dev = encoder->dev; - struct drm_crtc *crtc = encoder->crtc; - struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; - struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n", connector->base.id, drm_get_connector_name(connector), @@ -5716,6 +5707,7 @@ void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, if (old->load_detect_temp) { connector->encoder = NULL; + encoder->crtc = NULL; drm_helper_disable_unused_functions(dev); if (old->release_fb) @@ -5725,10 +5717,8 @@ void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, } /* Switch crtc and encoder back off if necessary */ - if (old->dpms_mode != DRM_MODE_DPMS_ON) { - encoder_funcs->dpms(encoder, old->dpms_mode); - crtc_funcs->dpms(crtc, old->dpms_mode); - } + if (old->dpms_mode != DRM_MODE_DPMS_ON) + connector->funcs->dpms(connector, old->dpms_mode); } /* Returns the clock of the currently programmed mode of the given pipe. */ -- 2.20.1