To avoid even more code duplication punt this all to the probe worker,
which needs some slight adjustment to also generate a uevent when the
status has changed to due connector->force.
v2: Instead of running the output_poll_work (which is kinda the wrong
thing and a layering violation since it's an internal of the probe
helpers), or calling ->detect (which is again a layering violation
since it's used only by probe helpers) just call the official
->fill_modes function, like a GET_CONNECTOR ioctl call.
v3: Restore the accidentally removed forced-probe for echo "detect" >
force.
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Reported-by: Chris Wilson <ch...@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
---
drivers/gpu/drm/drm_probe_helper.c | 46 +++++++++++++++++++-------------------
drivers/gpu/drm/drm_sysfs.c | 38 +++++++++++--------------------
2 files changed, 36 insertions(+), 48 deletions(-)
diff --git a/drivers/gpu/drm/drm_probe_helper.c
b/drivers/gpu/drm/drm_probe_helper.c
index a214a4a93b03..b7bdf12c54a5 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -147,6 +147,8 @@ static int
drm_helper_probe_single_connector_modes_merge_bits(struct drm_connect
list_for_each_entry(mode, &connector->modes, head)
mode->status = MODE_UNVERIFIED;
+ old_status = connector->status;
+
if (connector->force) {
if (connector->force == DRM_FORCE_ON ||
connector->force == DRM_FORCE_ON_DIGITAL)
@@ -156,33 +158,31 @@ static int
drm_helper_probe_single_connector_modes_merge_bits(struct drm_connect
if (connector->funcs->force)
connector->funcs->force(connector);
} else {
- old_status = connector->status;
-
connector->status = connector->funcs->detect(connector, true);
+ }
+
+ /*
+ * Normally either the driver's hpd code or the poll loop should
+ * pick up any changes and fire the hotplug event. But if
+ * userspace sneaks in a probe, we might miss a change. Hence
+ * check here, and if anything changed start the hotplug code.
+ */
+ if (old_status != connector->status) {
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to
%d\n",
+ connector->base.id,
+ connector->name,
+ old_status, connector->status);
/*
- * Normally either the driver's hpd code or the poll loop should
- * pick up any changes and fire the hotplug event. But if
- * userspace sneaks in a probe, we might miss a change. Hence
- * check here, and if anything changed start the hotplug code.
+ * The hotplug event code might call into the fb
+ * helpers, and so expects that we do not hold any
+ * locks. Fire up the poll struct instead, it will
+ * disable itself again.
*/
- if (old_status != connector->status) {
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d
to %d\n",
- connector->base.id,
- connector->name,
- old_status, connector->status);
-
- /*
- * The hotplug event code might call into the fb
- * helpers, and so expects that we do not hold any
- * locks. Fire up the poll struct instead, it will
- * disable itself again.
- */
- dev->mode_config.delayed_event = true;
- if (dev->mode_config.poll_enabled)
-
schedule_delayed_work(&dev->mode_config.output_poll_work,
- 0);
- }
+ dev->mode_config.delayed_event = true;
+ if (dev->mode_config.poll_enabled)
+
schedule_delayed_work(&dev->mode_config.output_poll_work,
+ 0);
}
/* Re-enable polling in case the global poll config changed. */
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 9ac4ffa6cce3..df66d9447cb0 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -167,47 +167,35 @@ static ssize_t status_store(struct device *device,
{
struct drm_connector *connector = to_drm_connector(device);
struct drm_device *dev = connector->dev;
- enum drm_connector_status old_status;
+ enum drm_connector_force old_force;
int ret;
ret = mutex_lock_interruptible(&dev->mode_config.mutex);
if (ret)
return ret;
- old_status = connector->status;
+ old_force = connector->force;
- if (sysfs_streq(buf, "detect")) {
+ if (sysfs_streq(buf, "detect"))
connector->force = 0;
- connector->status = connector->funcs->detect(connector, true);
- } else if (sysfs_streq(buf, "on")) {
+ else if (sysfs_streq(buf, "on"))
connector->force = DRM_FORCE_ON;
- } else if (sysfs_streq(buf, "on-digital")) {
+ else if (sysfs_streq(buf, "on-digital"))
connector->force = DRM_FORCE_ON_DIGITAL;
- } else if (sysfs_streq(buf, "off")) {
+ else if (sysfs_streq(buf, "off"))
connector->force = DRM_FORCE_OFF;
- } else
+ else
ret = -EINVAL;
- if (ret == 0 && connector->force) {
- if (connector->force == DRM_FORCE_ON ||
- connector->force == DRM_FORCE_ON_DIGITAL)
- connector->status = connector_status_connected;
- else
- connector->status = connector_status_disconnected;
- if (connector->funcs->force)
- connector->funcs->force(connector);
- }
-
- if (old_status != connector->status) {
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to
%d\n",
+ if (old_force != connector->force || !connector->force) {
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force updated from %d to %d or
reprobing\n",
connector->base.id,
connector->name,
- old_status, connector->status);
+ old_force, connector->force);
- dev->mode_config.delayed_event = true;
- if (dev->mode_config.poll_enabled)
-
schedule_delayed_work(&dev->mode_config.output_poll_work,
- 0);
+ connector->funcs->fill_modes(connector,
+ dev->mode_config.max_width,
+ dev->mode_config.max_height);
}
mutex_unlock(&dev->mode_config.mutex);
--
2.5.1
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