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drm/ast: Automatically clean up poll helper

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Automatically clean up the conncetor-poll thread as part of the DRM
device release. The new helper drmm_kms_helper_poll_init() provides
a shared implementation for all drivers.

v6:
- fix kernel doc comment (Sui, kernel test robot)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325200855.21150-14-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2024-03-25 21:06:58 +01:00
parent 225a8d0bd9
commit 10021ef273
3 changed files with 32 additions and 1 deletions
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4
drivers/gpu/drm/ast/ast_mode.c
View File

@ -1905,7 +1905,9 @@ int ast_mode_config_init(struct ast_device *ast)
drm_mode_config_reset(dev); drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev); ret = drmm_kms_helper_poll_init(dev);
if (ret)
return ret;
return 0; return 0;
} }

27
drivers/gpu/drm/drm_probe_helper.c
View File

@ -37,6 +37,7 @@
#include <drm/drm_crtc.h> #include <drm/drm_crtc.h>
#include <drm/drm_edid.h> #include <drm/drm_edid.h>
#include <drm/drm_fourcc.h> #include <drm/drm_fourcc.h>
#include <drm/drm_managed.h>
#include <drm/drm_modeset_helper_vtables.h> #include <drm/drm_modeset_helper_vtables.h>
#include <drm/drm_print.h> #include <drm/drm_print.h>
#include <drm/drm_probe_helper.h> #include <drm/drm_probe_helper.h>
@ -951,6 +952,32 @@ void drm_kms_helper_poll_fini(struct drm_device *dev)
} }
EXPORT_SYMBOL(drm_kms_helper_poll_fini); EXPORT_SYMBOL(drm_kms_helper_poll_fini);
static void drm_kms_helper_poll_init_release(struct drm_device *dev, void *res)
{
drm_kms_helper_poll_fini(dev);
}
/**
* drmm_kms_helper_poll_init - initialize and enable output polling
* @dev: drm_device
*
* This function initializes and then also enables output polling support for
* @dev similar to drm_kms_helper_poll_init(). Polling will automatically be
* cleaned up when the DRM device goes away.
*
* See drm_kms_helper_poll_init() for more information.
*
* Returns:
* 0 on success, or a negative errno code otherwise.
*/
int drmm_kms_helper_poll_init(struct drm_device *dev)
{
drm_kms_helper_poll_init(dev);
return drmm_add_action_or_reset(dev, drm_kms_helper_poll_init_release, dev);
}
EXPORT_SYMBOL(drmm_kms_helper_poll_init);
static bool check_connector_changed(struct drm_connector *connector) static bool check_connector_changed(struct drm_connector *connector)
{ {
struct drm_device *dev = connector->dev; struct drm_device *dev = connector->dev;

2
include/drm/drm_probe_helper.h
View File

@ -16,6 +16,8 @@ int drm_helper_probe_single_connector_modes(struct drm_connector
int drm_helper_probe_detect(struct drm_connector *connector, int drm_helper_probe_detect(struct drm_connector *connector,
struct drm_modeset_acquire_ctx *ctx, struct drm_modeset_acquire_ctx *ctx,
bool force); bool force);
int drmm_kms_helper_poll_init(struct drm_device *dev);
void drm_kms_helper_poll_init(struct drm_device *dev); void drm_kms_helper_poll_init(struct drm_device *dev);
void drm_kms_helper_poll_fini(struct drm_device *dev); void drm_kms_helper_poll_fini(struct drm_device *dev);
bool drm_helper_hpd_irq_event(struct drm_device *dev); bool drm_helper_hpd_irq_event(struct drm_device *dev);