42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2024 Rockchip Electronics Co., Ltd.
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* Author: Zhang Yubing <yubing.zhang@rock-chips.com>
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*/
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#ifndef _ROCKCHIP_DP_MST_AUX_CLIENT_H_
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#define _ROCKCHIP_DP_MST_AUX_CLIENT_H_
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#include <linux/types.h>
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#include <drm/display/drm_dp_helper.h>
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struct rockchip_dp_aux_client {
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struct device *dev;
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struct list_head head;
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void *mst_ctx;
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void *host_dev;
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void (*hpd_irq_cb)(void *host_dev);
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ssize_t (*transfer_cb)(struct drm_dp_aux *drm_aux,
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struct drm_dp_aux_msg *msg);
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int (*register_hpd_irq)(struct rockchip_dp_aux_client *aux_client,
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void (*hpd_irq_cb)(void *), void *dev);
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int (*register_transfer)(struct rockchip_dp_aux_client *aux_client,
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ssize_t (*transfer)(struct drm_dp_aux *, struct drm_dp_aux_msg *));
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ssize_t (*transfer)(struct rockchip_dp_aux_client *aux_client,
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struct drm_dp_aux *drm_aux,
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struct drm_dp_aux_msg *msg);
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};
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#if IS_REACHABLE(CONFIG_ROCKCHIP_DP_MST_AUX_CLIENT)
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struct rockchip_dp_aux_client *rockchip_dp_get_aux_client(struct device_node *node,
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char *handle_name);
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#else
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static inline struct rockchip_dp_aux_client *rockchip_dp_get_aux_client(struct device_node *node,
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char *handle_name)
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{
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return NULL;
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}
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#endif
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#endif
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