[Intel-gfx] [PATCH v.2 07/12] DRM/i915: (re)init HPD interrupt storm statistics.
Egbert Eich
eich at suse.de
Mon Feb 25 18:06:54 CET 2013
When an encoder is shared on several connectors there is only
one hotplug line, thus this line needs to be shared among these
connectors.
If HPD detect only works reliably on a subset of those connectors,
we want to poll the others. Thus we need to make sure that storm
detection doesn't mess up the settings for those connectors.
Therefore we store the settings in the intel_connector struct and
restore them from there.
If nothing is set but the encoder has a hpd_pin set we assume this
connector is hotplug capable.
On init/reset we make sure the polled state of the connectors
is (re)set to the default value, the HPD interrupts are marked
enabled.
Signed-off-by: Egbert Eich <eich at suse.de>
---
drivers/gpu/drm/i915/i915_irq.c | 13 +++++++++++++
drivers/gpu/drm/i915/intel_crt.c | 6 ++----
drivers/gpu/drm/i915/intel_dp.c | 1 -
drivers/gpu/drm/i915/intel_drv.h | 4 ++++
drivers/gpu/drm/i915/intel_hdmi.c | 1 -
drivers/gpu/drm/i915/intel_sdvo.c | 5 ++---
drivers/gpu/drm/i915/intel_tv.c | 2 +-
7 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 08a0934..d1ccff7 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2918,7 +2918,20 @@ void intel_irq_init(struct drm_device *dev)
void intel_hpd_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct drm_connector *connector;
+ int i;
+ for (i = 1; i < HPD_NUM_PINS; i++) {
+ dev_priv->hpd_stats[i].hpd_cnt = 0;
+ dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED;
+ }
+ list_for_each_entry(connector, &mode_config->connector_list, head) {
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+ connector->polled = intel_connector->polled;
+ if (!connector->polled && I915_HAS_HOTPLUG(dev) && intel_connector->encoder->hpd_pin > HPD_NONE)
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+ }
if (dev_priv->display.hpd_irq_setup)
dev_priv->display.hpd_irq_setup(dev);
}
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 5654583..4318f3e 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -790,10 +790,8 @@ void intel_crt_init(struct drm_device *dev)
drm_sysfs_connector_add(connector);
- if (I915_HAS_HOTPLUG(dev))
- connector->polled = DRM_CONNECTOR_POLL_HPD;
- else
- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+ if (!I915_HAS_HOTPLUG(dev))
+ intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
/*
* Configure the automatic hotplug detection stuff
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 5a77d40..66134d1 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2816,7 +2816,6 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
drm_connector_init(dev, connector, &intel_dp_connector_funcs, type);
drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs);
- connector->polled = DRM_CONNECTOR_POLL_HPD;
connector->interlace_allowed = true;
connector->doublescan_allowed = 0;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index c9003bd..142f40a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -198,6 +198,10 @@ struct intel_connector {
/* Cached EDID for eDP and LVDS. May hold ERR_PTR for invalid EDID. */
struct edid *edid;
+
+ /* since POLL and HPD connectors may use the same HPD line keep the native
+ state of connector->polled in case hotplug storm detection changes it */
+ u8 polled;
};
struct intel_crtc {
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index e48452a..82c9b9b 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1015,7 +1015,6 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
DRM_MODE_CONNECTOR_HDMIA);
drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
- connector->polled = DRM_CONNECTOR_POLL_HPD;
connector->interlace_allowed = 1;
connector->doublescan_allowed = 0;
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index d362dd5..30635c6 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -2270,7 +2270,6 @@ intel_sdvo_dvi_init(struct intel_sdvo *intel_sdvo, int device)
connector = &intel_connector->base;
if (intel_sdvo_get_hotplug_support(intel_sdvo) &
intel_sdvo_connector->output_flag) {
- connector->polled = DRM_CONNECTOR_POLL_HPD;
intel_sdvo->hotplug_active |= intel_sdvo_connector->output_flag;
/* Some SDVO devices have one-shot hotplug interrupts.
* Ensure that they get re-enabled when an interrupt happens.
@@ -2278,7 +2277,7 @@ intel_sdvo_dvi_init(struct intel_sdvo *intel_sdvo, int device)
intel_encoder->hot_plug = intel_sdvo_enable_hotplug;
intel_sdvo_enable_hotplug(intel_encoder);
} else {
- connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+ intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
}
encoder->encoder_type = DRM_MODE_ENCODER_TMDS;
connector->connector_type = DRM_MODE_CONNECTOR_DVID;
@@ -2347,7 +2346,7 @@ intel_sdvo_analog_init(struct intel_sdvo *intel_sdvo, int device)
intel_connector = &intel_sdvo_connector->base;
connector = &intel_connector->base;
- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+ intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
encoder->encoder_type = DRM_MODE_ENCODER_DAC;
connector->connector_type = DRM_MODE_CONNECTOR_VGA;
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 984a113..a5a3fc0 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1613,7 +1613,7 @@ intel_tv_init(struct drm_device *dev)
*
* More recent chipsets favour HDMI rather than integrated S-Video.
*/
- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+ intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
drm_connector_init(dev, connector, &intel_tv_connector_funcs,
DRM_MODE_CONNECTOR_SVIDEO);
--
1.7.7
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