On Thu, Nov 19, 2015 at 05:46:50PM +0100, Daniel Vetter wrote:
> 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.
>
> 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);
This now does fill_modes() before we call detect(). We rely on the
ordering of detect() before doing fill_modes() as in many cases we use
the EDID gathered in detect() to generate the modes (if I am not
mistaken, I think we merged those patches to cache the EDID for a
detection cycle).
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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