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drm: Improve the output_poll_changed description

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this callback was used by drm_kms_helper_hotplug_event()

V2: (Thanks for Daniel's suggestions)
- remove the FIXME below.since with the drm_client
- infrastructure and the generic fbdev emulation we've
- resolved this all very neatly now.

V3: Add comments that This hook is deprecated
- new implementation methods instead of this hook

v4: used by drm_kms_helper_hotplug_event()
- drm_fb_helper_hotplug_changed() is not found
instead by drm_kms_helper_hotplug_event()

Signed-off-by: ZhiJie.Zhang <zhangzhijie@loongson.cn>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210903032402.11935-1-zhangzhijie@loongson.cn
This commit is contained in:
zhangzhijie 2021-09-03 11:24:02 +08:00 committed by Daniel Vetter
parent 98cca519df
commit a9fc431555
1 changed files with 6 additions and 7 deletions
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13
include/drm/drm_mode_config.h
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@ -103,14 +103,13 @@ struct drm_mode_config_funcs {
* Callback used by helpers to inform the driver of output configuration * Callback used by helpers to inform the driver of output configuration
* changes. * changes.
* *
* Drivers implementing fbdev emulation with the helpers can call * Drivers implementing fbdev emulation use drm_kms_helper_hotplug_event()
* drm_fb_helper_hotplug_changed from this hook to inform the fbdev * to call this hook to inform the fbdev helper of output changes.
* helper of output changes.
* *
* FIXME: * This hook is deprecated, drivers should instead use
* * drm_fbdev_generic_setup() which takes care of any necessary
* Except that there's no vtable for device-level helper callbacks * hotplug event forwarding already without further involvement by
* there's no reason this is a core function. * the driver.
*/ */
void (*output_poll_changed)(struct drm_device *dev); void (*output_poll_changed)(struct drm_device *dev);