Re: [PATCH 04/11] drm/crtc: add interface to reinitialise the legacy mode group

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Tuesday, May 20, 2014 7:54 PM
From: Dave Airlie <airlied@xxxxxxxxxx>

This can be called to update things after dynamic connectors/encoders
are created/deleted.

Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
drivers/gpu/drm/drm_crtc.c | 9 +++++++++
include/drm/drm_crtc.h | 1 +
2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index f1753e6..8bf87a6 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1421,6 +1421,15 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
}
EXPORT_SYMBOL(drm_mode_group_init_legacy_group);

+void drm_reinit_primary_mode_group(struct drm_device *dev)
+{
+ drm_modeset_lock_all(dev);
+ drm_mode_group_destroy(&dev->primary->mode_group);
+ drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
+ drm_modeset_unlock_all(dev);
+}
+EXPORT_SYMBOL(drm_reinit_primary_mode_group);
+
/**
* drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
* @out: drm_mode_modeinfo struct to return to the user
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index c6b9e8a..55bc523 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -916,6 +916,7 @@ extern const char *drm_get_tv_select_name(int val);
extern void drm_fb_release(struct drm_file *file_priv);
extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
extern void drm_mode_group_destroy(struct drm_mode_group *group);
+extern void drm_reinit_primary_mode_group(struct drm_device *dev);
extern bool drm_probe_ddc(struct i2c_adapter *adapter);
extern struct edid *drm_get_edid(struct drm_connector *connector,
struct i2c_adapter *adapter);

Reviewed-by: Todd Previte <tprevite@xxxxxxxxx>
Tuesday, May 20, 2014 7:54 PM
Hey,

So this set is pretty close to what I think we should be merging initially,

Since the last set, it makes fbcon and suspend/resume work a lot better,

I've also fixed a couple of bugs in -intel that make things work a lot
better.

I've bashed on this a bit using kms-flip from intel-gpu-tools, hacked
to add 3 monitor support.

It still generates a fair few i915 state checker backtraces, and some
of them are fairly hard to work out, it might be we should just tone
down the state checker for encoders/connectors with no actual hw backing
them.

Dave.

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