From 7173188d5d5e50b95c588dbae3b3bc78fde4138e Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 19 Apr 2011 23:10:58 +0100 Subject: [PATCH] drm/i915: Simplify return value from intel_get_load_detect_pipe ... and so remove the confusion as to whether to use the returned crtc or intel_encoder->base.crtc with the subsequent load-detection. Even though they were the same, the two instances of load-detection code disagreed over which was the more correct. Signed-off-by: Chris Wilson Signed-off-by: Keith Packard --- drivers/gpu/drm/i915/intel_crt.c | 17 +++++++---------- drivers/gpu/drm/i915/intel_display.c | 16 +++++++++------- drivers/gpu/drm/i915/intel_drv.h | 8 ++++---- drivers/gpu/drm/i915/intel_tv.c | 6 ++---- 4 files changed, 22 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index d03fc05b39c0..2eb60cd47b33 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -305,13 +305,11 @@ static bool intel_crt_detect_ddc(struct drm_connector *connector) } static enum drm_connector_status -intel_crt_load_detect(struct drm_crtc *crtc, struct intel_crt *crt) +intel_crt_load_detect(struct intel_crt *crt) { - struct drm_encoder *encoder = &crt->base.base; - struct drm_device *dev = encoder->dev; + struct drm_device *dev = crt->base.base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - uint32_t pipe = intel_crtc->pipe; + uint32_t pipe = to_intel_crtc(crt->base.base.crtc)->pipe; uint32_t save_bclrpat; uint32_t save_vtotal; uint32_t vtotal, vactive; @@ -454,15 +452,14 @@ intel_crt_detect(struct drm_connector *connector, bool force) /* for pre-945g platforms use load detect */ crtc = crt->base.base.crtc; if (crtc && crtc->enabled) { - status = intel_crt_load_detect(crtc, crt); + status = intel_crt_load_detect(crt); } else { - crtc = intel_get_load_detect_pipe(&crt->base, connector, - NULL, &dpms_mode); - if (crtc) { + if (intel_get_load_detect_pipe(&crt->base, connector, + NULL, &dpms_mode)) { if (intel_crt_detect_ddc(connector)) status = connector_status_connected; else - status = intel_crt_load_detect(crtc, crt); + status = intel_crt_load_detect(crt); intel_release_load_detect_pipe(&crt->base, connector, dpms_mode); } else diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 373c2a005ec1..228621d07743 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5481,10 +5481,10 @@ static struct drm_display_mode load_detect_mode = { 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC), }; -struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, - struct drm_connector *connector, - struct drm_display_mode *mode, - int *dpms_mode) +bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, + struct drm_connector *connector, + struct drm_display_mode *mode, + int *dpms_mode) { struct intel_crtc *intel_crtc; struct drm_crtc *possible_crtc; @@ -5517,7 +5517,7 @@ struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); } - return crtc; + return true; } /* Find an unused one (if possible) */ @@ -5537,7 +5537,8 @@ struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, * If we didn't find an unused CRTC, don't use any. */ if (!crtc) { - return NULL; + DRM_DEBUG_KMS("no pipe available for load-detect\n"); + return false; } encoder->crtc = crtc; @@ -5561,10 +5562,11 @@ struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, encoder_funcs->mode_set(encoder, &crtc->mode, &crtc->mode); encoder_funcs->commit(encoder); } + /* let the connector get through one full cycle before testing */ intel_wait_for_vblank(dev, intel_crtc->pipe); - return crtc; + return true; } void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 1d20712d527f..fa46d329a8ea 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -291,10 +291,10 @@ int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data, struct drm_file *file_priv); extern void intel_wait_for_vblank(struct drm_device *dev, int pipe); extern void intel_wait_for_pipe_off(struct drm_device *dev, int pipe); -extern struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, - struct drm_connector *connector, - struct drm_display_mode *mode, - int *dpms_mode); +extern bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder, + struct drm_connector *connector, + struct drm_display_mode *mode, + int *dpms_mode); extern void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, struct drm_connector *connector, int dpms_mode); diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c index 6b22c1dcc015..3322582ba3ec 100644 --- a/drivers/gpu/drm/i915/intel_tv.c +++ b/drivers/gpu/drm/i915/intel_tv.c @@ -1361,12 +1361,10 @@ intel_tv_detect(struct drm_connector *connector, bool force) if (intel_tv->base.base.crtc && intel_tv->base.base.crtc->enabled) { type = intel_tv_detect_type(intel_tv, connector); } else if (force) { - struct drm_crtc *crtc; int dpms_mode; - crtc = intel_get_load_detect_pipe(&intel_tv->base, connector, - &mode, &dpms_mode); - if (crtc) { + if (intel_get_load_detect_pipe(&intel_tv->base, connector, + &mode, &dpms_mode)) { type = intel_tv_detect_type(intel_tv, connector); intel_release_load_detect_pipe(&intel_tv->base, connector, dpms_mode); -- 2.20.1