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 <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
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 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 @@
/* 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 373c2a0..228621d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5481,10 +5481,10 @@
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 @@
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 @@
* 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 @@
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 1d20712..fa46d32 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -291,10 +291,10 @@
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 6b22c1d..3322582 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1361,12 +1361,10 @@
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);