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From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 1/2] drm/i915: Simplify return value from intel_get_load_detect_pipe
Date: Wed, 20 Apr 2011 19:26:06 +0100
Message-ID: <1303323967-22541-1-git-send-email-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <yunwriolrpa.fsf@aiko.keithp.com>

... 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 <chris@chris-wilson.co.uk>
---
 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 d03fc05..2eb60cd 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 e6df160..a0df09b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5539,10 +5539,10 @@ 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;
@@ -5575,7 +5575,7 @@ 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) */
@@ -5595,7 +5595,8 @@ 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;
@@ -5619,10 +5620,11 @@ 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 aeb1b98..7ea4bab 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -298,10 +298,10 @@ static inline void intel_wait_for_crtc_vblank_safe(struct drm_crtc *crtc)
 		msleep(50);
 }
 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 3047a66..1174f77 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1370,12 +1370,10 @@ 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);
-- 
1.7.4.1

  reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-20  9:22 Remove dead code " Chris Wilson
2011-04-20  9:22 ` [PATCH 1/6] drm/i915: Simplify return value " Chris Wilson
2011-04-20 18:10   ` Keith Packard
2011-04-20 18:26     ` Chris Wilson [this message]
2011-04-20 18:26       ` [PATCH 2/2] drm/i915: Propagate failure to set mode for load-detect pipe Chris Wilson
2011-04-20  9:22 ` [PATCH 2/6] drm/i915: Don't store temporary load-detect variables in the generic encoder Chris Wilson
2011-04-20 18:12   ` Keith Packard
2011-04-20  9:22 ` [PATCH 3/6] drm/i915: Remove unused supported_crtc from intel_load_detect_pipe Chris Wilson
2011-04-20 18:12   ` Keith Packard
2011-04-20  9:22 ` [PATCH 4/6] drm/i915: Pass the saved adjusted_mode when adding to the load-detect crtc Chris Wilson
2011-04-20 18:23   ` Keith Packard
2011-04-20 19:38     ` Chris Wilson
2011-04-20 21:00       ` Keith Packard
2011-04-20  9:22 ` [PATCH 5/6] drm/i915: Remove dead code from intel_get_load_detect_pipe() Chris Wilson
2011-04-20 18:26   ` Keith Packard
2011-04-20  9:22 ` [PATCH 6/6] drm/i915: Attach a fb to the load-detect pipe Chris Wilson
2011-04-20 18:43   ` Keith Packard
2011-04-20 18:55     ` Chris Wilson
2011-04-20 21:03       ` Keith Packard
2011-04-20 21:43         ` [PATCH] " Chris Wilson
2011-04-21  8:45           ` When in doubt, use a temporary fb Chris Wilson
2011-04-21  8:45             ` [PATCH 1/3] drm/i915: Remove dead code from intel_release_load_detect_pipe() Chris Wilson
2011-04-21  8:45             ` [PATCH 2/3] drm/i915: Attach a fb to the load-detect pipe Chris Wilson
2011-04-21  8:45             ` [PATCH 3/3] drm/i915: Move the tracking of dpms_mode down into crtc enable/disable Chris Wilson
2011-04-20 20:16     ` [PATCH] drm/i915: Attach a fb to the load-detect pipe Chris Wilson

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