[Intel-gfx] [PATCH v2] drm/i915: Start tracking PSR state in crtc state
Ville Syrjala
ville.syrjala at linux.intel.com
Thu Oct 12 13:02:01 UTC 2017
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Add the minimal amount of PSR tracking into the crtc state. This allows
precomputing the possibility of using PSR correctly, and it means we can
safely call the psr enable/disable functions for any DP endcoder.
As a nice bonus we get rid of some more crtc->config usage, which we
want to kill off eventually.
v2: Fix 'goto unlock' fail in intel_psr_enable() (Jani)
Check intel_dp_is_edp() in is_edp_psr() (Jani)
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Jani Nikula <jani.nikula at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 2 +
drivers/gpu/drm/i915/intel_drv.h | 5 +++
drivers/gpu/drm/i915/intel_psr.c | 85 +++++++++++++++++++++-------------------
3 files changed, 52 insertions(+), 40 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index b0f446b68f42..753404280a19 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1832,6 +1832,8 @@ intel_dp_compute_config(struct intel_encoder *encoder,
if (!HAS_DDI(dev_priv))
intel_dp_set_clock(encoder, pipe_config);
+ intel_psr_compute_config(intel_dp, pipe_config);
+
return true;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b87946dcc53f..d61985f93d40 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -718,6 +718,9 @@ struct intel_crtc_state {
struct intel_link_m_n dp_m2_n2;
bool has_drrs;
+ bool has_psr;
+ bool has_psr2;
+
/*
* Frequence the dpll for the port should run at. Differs from the
* adjusted dotclock e.g. for DP or 12bpc hdmi mode. This is also
@@ -1764,6 +1767,8 @@ void intel_psr_flush(struct drm_i915_private *dev_priv,
void intel_psr_init(struct drm_i915_private *dev_priv);
void intel_psr_single_frame_update(struct drm_i915_private *dev_priv,
unsigned frontbuffer_bits);
+void intel_psr_compute_config(struct intel_dp *intel_dp,
+ struct intel_crtc_state *crtc_state);
/* intel_runtime_pm.c */
int intel_power_domains_init(struct drm_i915_private *);
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 5419cda83ba8..93b177cc4cbf 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -58,6 +58,9 @@
static bool is_edp_psr(struct intel_dp *intel_dp)
{
+ if (!intel_dp_is_edp(intel_dp))
+ return false;
+
return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED;
}
@@ -376,22 +379,25 @@ static void hsw_psr_activate(struct intel_dp *intel_dp)
hsw_activate_psr1(intel_dp);
}
-static bool intel_psr_match_conditions(struct intel_dp *intel_dp)
+void intel_psr_compute_config(struct intel_dp *intel_dp,
+ struct intel_crtc_state *crtc_state)
{
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
- struct drm_device *dev = dig_port->base.base.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct drm_crtc *crtc = dig_port->base.base.crtc;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
const struct drm_display_mode *adjusted_mode =
- &intel_crtc->config->base.adjusted_mode;
+ &crtc_state->base.adjusted_mode;
int psr_setup_time;
- lockdep_assert_held(&dev_priv->psr.lock);
- WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
- WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
+ if (!HAS_PSR(dev_priv))
+ return;
- dev_priv->psr.source_ok = false;
+ if (!is_edp_psr(intel_dp))
+ return;
+
+ if (!i915_modparams.enable_psr) {
+ DRM_DEBUG_KMS("PSR disable by flag\n");
+ return;
+ }
/*
* HSW spec explicitly says PSR is tied to port A.
@@ -402,66 +408,70 @@ static bool intel_psr_match_conditions(struct intel_dp *intel_dp)
*/
if (HAS_DDI(dev_priv) && dig_port->port != PORT_A) {
DRM_DEBUG_KMS("PSR condition failed: Port not supported\n");
- return false;
- }
-
- if (!i915_modparams.enable_psr) {
- DRM_DEBUG_KMS("PSR disable by flag\n");
- return false;
+ return;
}
if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
!dev_priv->psr.link_standby) {
DRM_ERROR("PSR condition failed: Link off requested but not supported on this platform\n");
- return false;
+ return;
}
if (IS_HASWELL(dev_priv) &&
- I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config->cpu_transcoder)) &
+ I915_READ(HSW_STEREO_3D_CTL(crtc_state->cpu_transcoder)) &
S3D_ENABLE) {
DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n");
- return false;
+ return;
}
if (IS_HASWELL(dev_priv) &&
adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n");
- return false;
+ return;
}
psr_setup_time = drm_dp_psr_setup_time(intel_dp->psr_dpcd);
if (psr_setup_time < 0) {
DRM_DEBUG_KMS("PSR condition failed: Invalid PSR setup time (0x%02x)\n",
intel_dp->psr_dpcd[1]);
- return false;
+ return;
}
if (intel_usecs_to_scanlines(adjusted_mode, psr_setup_time) >
adjusted_mode->crtc_vtotal - adjusted_mode->crtc_vdisplay - 1) {
DRM_DEBUG_KMS("PSR condition failed: PSR setup time (%d us) too long\n",
psr_setup_time);
- return false;
+ return;
+ }
+
+ /*
+ * FIXME psr2_support is messed up. It's both computed
+ * dynamically during PSR enable, and extracted from sink
+ * caps during eDP detection.
+ */
+ if (!dev_priv->psr.psr2_support) {
+ crtc_state->has_psr = true;
+ return;
}
/* PSR2 is restricted to work with panel resolutions upto 3200x2000 */
- if (dev_priv->psr.psr2_support &&
- (intel_crtc->config->pipe_src_w > 3200 ||
- intel_crtc->config->pipe_src_h > 2000)) {
- dev_priv->psr.psr2_support = false;
- return false;
+ if (adjusted_mode->crtc_hdisplay > 3200 ||
+ adjusted_mode->crtc_vdisplay > 2000) {
+ DRM_DEBUG_KMS("PSR2 disabled, panel resolution too big\n");
+ return;
}
/*
* FIXME:enable psr2 only for y-cordinate psr2 panels
* After gtc implementation , remove this restriction.
*/
- if (!dev_priv->psr.y_cord_support && dev_priv->psr.psr2_support) {
+ if (!dev_priv->psr.y_cord_support) {
DRM_DEBUG_KMS("PSR2 disabled, panel does not support Y coordinate\n");
- return false;
+ return;
}
- dev_priv->psr.source_ok = true;
- return true;
+ crtc_state->has_psr = true;
+ crtc_state->has_psr2 = true;
}
static void intel_psr_activate(struct intel_dp *intel_dp)
@@ -531,14 +541,9 @@ void intel_psr_enable(struct intel_dp *intel_dp,
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
- if (!HAS_PSR(dev_priv))
+ if (!crtc_state->has_psr)
return;
- if (!is_edp_psr(intel_dp)) {
- DRM_DEBUG_KMS("PSR not supported by this panel\n");
- return;
- }
-
WARN_ON(dev_priv->drrs.dp);
mutex_lock(&dev_priv->psr.lock);
if (dev_priv->psr.enabled) {
@@ -546,8 +551,8 @@ void intel_psr_enable(struct intel_dp *intel_dp,
goto unlock;
}
- if (!intel_psr_match_conditions(intel_dp))
- goto unlock;
+ dev_priv->psr.psr2_support = crtc_state->has_psr2;
+ dev_priv->psr.source_ok = true;
dev_priv->psr.busy_frontbuffer_bits = 0;
@@ -668,7 +673,7 @@ void intel_psr_disable(struct intel_dp *intel_dp,
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
- if (!HAS_PSR(dev_priv))
+ if (!old_crtc_state->has_psr)
return;
mutex_lock(&dev_priv->psr.lock);
--
2.13.6
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