diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-11-02 21:07:00 +0300 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2023-01-05 16:59:44 +0300 |
| commit | c8268795c9a9cc7be50f78d4502fad83a2a4f8df (patch) | |
| tree | 168e5b8de4d09fc758e0ecd8d1d662fdf8a1eccf /drivers/gpu/drm/drm_probe_helper.c | |
| parent | 78b991ccfa64a438e2d8c2997d22d55621ab277d (diff) | |
| download | linux-c8268795c9a9cc7be50f78d4502fad83a2a4f8df.tar.xz | |
drm/probe-helper: enable and disable HPD on connectors
Introduce two drm_connector_helper_funcs: enable_hpd() and disable_hpd().
They are called by drm_kms_helper_poll_enable() and
drm_kms_helper_poll_disable() (and thus drm_kms_helper_poll_init() and
drm_kms_helper_poll_fini()) respectively.
This allows DRM drivers to rely on drm_kms_helper_poll for enabling and
disabling HPD detection rather than doing that manually.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221102180705.459294-3-dmitry.baryshkov@linaro.org
Diffstat (limited to 'drivers/gpu/drm/drm_probe_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_probe_helper.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index d07ad4c5696b..7973f2589ced 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -250,6 +250,12 @@ void drm_kms_helper_poll_enable(struct drm_device *dev) drm_connector_list_iter_begin(dev, &conn_iter); drm_for_each_connector_iter(connector, &conn_iter) { + const struct drm_connector_helper_funcs *funcs = + connector->helper_private; + + if (funcs && funcs->enable_hpd) + funcs->enable_hpd(connector); + if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) poll = true; @@ -804,12 +810,25 @@ EXPORT_SYMBOL(drm_kms_helper_is_poll_worker); static void drm_kms_helper_poll_disable_fini(struct drm_device *dev, bool fini) { + struct drm_connector *connector; + struct drm_connector_list_iter conn_iter; + if (!dev->mode_config.poll_enabled) return; if (fini) dev->mode_config.poll_enabled = false; + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + const struct drm_connector_helper_funcs *funcs = + connector->helper_private; + + if (funcs && funcs->disable_hpd) + funcs->disable_hpd(connector); + } + drm_connector_list_iter_end(&conn_iter); + cancel_delayed_work_sync(&dev->mode_config.output_poll_work); } |