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drm/probe_helper: extract two helper functions 

Extract drm_kms_helper_enable_hpd() and drm_kms_helper_disable_hpd(),
two helpers that enable and disable HPD handling on all device's
connectors.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124104548.3234554-1-dmitry.baryshkov@linaro.org
This commit is contained in:
Dmitry Baryshkov 2023-01-24 12:45:47 +02:00 committed by Neil Armstrong
parent 6ca80b9e5c
commit cbf143b282
1 changed files with 41 additions and 27 deletions
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68
drivers/gpu/drm/drm_probe_helper.c
View File

@ -222,6 +222,45 @@ drm_connector_mode_valid(struct drm_connector *connector,
return ret;
}
static void drm_kms_helper_disable_hpd(struct drm_device *dev)
{
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
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);
}
static bool drm_kms_helper_enable_hpd(struct drm_device *dev)
{
bool poll = false;
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
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;
}
drm_connector_list_iter_end(&conn_iter);
return poll;
}
#define DRM_OUTPUT_POLL_PERIOD (10*HZ)
/**
* drm_kms_helper_poll_enable - re-enable output polling.
@ -241,26 +280,12 @@ drm_connector_mode_valid(struct drm_connector *connector,
void drm_kms_helper_poll_enable(struct drm_device *dev)
{
bool poll = false;
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
unsigned long delay = DRM_OUTPUT_POLL_PERIOD;
if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll)
return;
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;
}
drm_connector_list_iter_end(&conn_iter);
poll = drm_kms_helper_enable_hpd(dev);
if (dev->mode_config.delayed_event) {
/*
@ -810,24 +835,13 @@ 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);
drm_kms_helper_disable_hpd(dev);
cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
}