mirror of https://github.com/torvalds/linux.git
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright (c) 2024 Linaro Ltd
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*/
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#include <drm/drm_bridge.h>
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#include <drm/drm_connector.h>
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#include <drm/drm_managed.h>
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#include <drm/display/drm_hdmi_cec_helper.h>
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#include <linux/export.h>
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#include <linux/mutex.h>
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#include <media/cec.h>
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#include <media/cec-notifier.h>
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static void drm_connector_hdmi_cec_notifier_phys_addr_invalidate(struct drm_connector *connector)
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{
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cec_notifier_phys_addr_invalidate(connector->cec.data);
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}
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static void drm_connector_hdmi_cec_notifier_phys_addr_set(struct drm_connector *connector,
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u16 addr)
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{
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cec_notifier_set_phys_addr(connector->cec.data, addr);
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}
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static void drm_connector_hdmi_cec_notifier_unregister(struct drm_device *dev, void *res)
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{
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struct drm_connector *connector = res;
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cec_notifier_conn_unregister(connector->cec.data);
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connector->cec.data = NULL;
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}
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static const struct drm_connector_cec_funcs drm_connector_cec_notifier_funcs = {
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.phys_addr_invalidate = drm_connector_hdmi_cec_notifier_phys_addr_invalidate,
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.phys_addr_set = drm_connector_hdmi_cec_notifier_phys_addr_set,
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};
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int drmm_connector_hdmi_cec_notifier_register(struct drm_connector *connector,
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const char *port_name,
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struct device *dev)
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{
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struct cec_connector_info conn_info;
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struct cec_notifier *notifier;
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cec_fill_conn_info_from_drm(&conn_info, connector);
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notifier = cec_notifier_conn_register(dev, port_name, &conn_info);
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if (!notifier)
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return -ENOMEM;
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mutex_lock(&connector->cec.mutex);
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connector->cec.data = notifier;
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connector->cec.funcs = &drm_connector_cec_notifier_funcs;
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mutex_unlock(&connector->cec.mutex);
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return drmm_add_action_or_reset(connector->dev,
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drm_connector_hdmi_cec_notifier_unregister,
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connector);
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}
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EXPORT_SYMBOL(drmm_connector_hdmi_cec_notifier_register);
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