On Fri, Oct 21, 2016 at 10:14:21AM +0100, Chris Wilson wrote:
> If we know which connector was plugged/unplugged or
> connected/disconnected, we can pass that information along to userspace
> inside the uevent to reduce the amount of work userspace has to perform
> after the event (i.e. instead of looking over all connectors, it can
> just reprobe the affected one).
>
> v2: Don't convert intel_hotplug.c, it does a light probe and doesn't
> need the force.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Villle Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> ---
> drivers/gpu/drm/drm_probe_helper.c | 10 ++++++----
> drivers/gpu/drm/drm_sysfs.c | 19 +++++++++++++++----
> drivers/gpu/drm/i2c/tda998x_drv.c | 2 +-
> drivers/gpu/drm/i915/intel_dp.c | 3 ++-
> drivers/gpu/drm/i915/intel_dp_mst.c | 2 +-
> drivers/gpu/drm/i915/intel_hotplug.c | 2 +-
> drivers/gpu/drm/qxl/qxl_display.c | 2 +-
> drivers/gpu/drm/radeon/radeon_dp_mst.c | 2 +-
> drivers/gpu/drm/virtio/virtgpu_vq.c | 2 +-
> drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +-
> drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 2 +-
> include/drm/drmP.h | 3 ++-
> include/drm/drm_crtc_helper.h | 3 ++-
> 13 files changed, 35 insertions(+), 19 deletions(-)
>
<snip>
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
> index 3ffbd69e4551..2bd48a987934 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -493,7 +493,7 @@ static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
> struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
> struct drm_device *dev = intel_dig_port->base.base.dev;
>
> - drm_kms_helper_hotplug_event(dev);
> + drm_kms_helper_hotplug_event(dev, &intel_dp->attached_connector->base);
> }
>
> static const struct drm_dp_mst_topology_cbs mst_cbs = {
> diff --git a/drivers/gpu/drm/i915/intel_hotplug.c b/drivers/gpu/drm/i915/intel_hotplug.c
> index 334d47b5811a..da0649aff734 100644
> --- a/drivers/gpu/drm/i915/intel_hotplug.c
> +++ b/drivers/gpu/drm/i915/intel_hotplug.c
> @@ -340,7 +340,7 @@ static void i915_hotplug_work_func(struct work_struct *work)
> mutex_unlock(&mode_config->mutex);
>
> if (changed)
> - drm_kms_helper_hotplug_event(dev);
> + drm_kms_helper_hotplug_event(dev, NULL);
> }
So basically this patch deals with all the weird cases but doesn't do
anything for the normal case of a connector being connected/disconnected?
--
Ville Syrjälä
Intel OTC
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