248 lines
6.2 KiB
C
248 lines
6.2 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#ifndef __DRM_DP_TUNNEL_H__
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#define __DRM_DP_TUNNEL_H__
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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struct drm_dp_aux;
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struct drm_device;
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struct drm_atomic_state;
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struct drm_dp_tunnel_mgr;
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struct drm_dp_tunnel_state;
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struct ref_tracker;
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struct drm_dp_tunnel_ref {
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struct drm_dp_tunnel *tunnel;
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struct ref_tracker *tracker;
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};
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#ifdef CONFIG_DRM_DISPLAY_DP_TUNNEL
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struct drm_dp_tunnel *
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drm_dp_tunnel_get(struct drm_dp_tunnel *tunnel, struct ref_tracker **tracker);
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void
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drm_dp_tunnel_put(struct drm_dp_tunnel *tunnel, struct ref_tracker **tracker);
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static inline void drm_dp_tunnel_ref_get(struct drm_dp_tunnel *tunnel,
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struct drm_dp_tunnel_ref *tunnel_ref)
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{
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tunnel_ref->tunnel = drm_dp_tunnel_get(tunnel, &tunnel_ref->tracker);
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}
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static inline void drm_dp_tunnel_ref_put(struct drm_dp_tunnel_ref *tunnel_ref)
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{
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drm_dp_tunnel_put(tunnel_ref->tunnel, &tunnel_ref->tracker);
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tunnel_ref->tunnel = NULL;
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}
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struct drm_dp_tunnel *
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drm_dp_tunnel_detect(struct drm_dp_tunnel_mgr *mgr,
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struct drm_dp_aux *aux);
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int drm_dp_tunnel_destroy(struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_enable_bw_alloc(struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_disable_bw_alloc(struct drm_dp_tunnel *tunnel);
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bool drm_dp_tunnel_bw_alloc_is_enabled(const struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_alloc_bw(struct drm_dp_tunnel *tunnel, int bw);
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int drm_dp_tunnel_get_allocated_bw(struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_update_state(struct drm_dp_tunnel *tunnel);
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void drm_dp_tunnel_set_io_error(struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_handle_irq(struct drm_dp_tunnel_mgr *mgr,
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struct drm_dp_aux *aux);
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int drm_dp_tunnel_max_dprx_rate(const struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_max_dprx_lane_count(const struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_available_bw(const struct drm_dp_tunnel *tunnel);
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const char *drm_dp_tunnel_name(const struct drm_dp_tunnel *tunnel);
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struct drm_dp_tunnel_state *
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drm_dp_tunnel_atomic_get_state(struct drm_atomic_state *state,
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struct drm_dp_tunnel *tunnel);
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struct drm_dp_tunnel_state *
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drm_dp_tunnel_atomic_get_old_state(struct drm_atomic_state *state,
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const struct drm_dp_tunnel *tunnel);
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struct drm_dp_tunnel_state *
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drm_dp_tunnel_atomic_get_new_state(struct drm_atomic_state *state,
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const struct drm_dp_tunnel *tunnel);
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int drm_dp_tunnel_atomic_set_stream_bw(struct drm_atomic_state *state,
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struct drm_dp_tunnel *tunnel,
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u8 stream_id, int bw);
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int drm_dp_tunnel_atomic_get_group_streams_in_state(struct drm_atomic_state *state,
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const struct drm_dp_tunnel *tunnel,
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u32 *stream_mask);
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int drm_dp_tunnel_atomic_check_stream_bws(struct drm_atomic_state *state,
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u32 *failed_stream_mask);
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int drm_dp_tunnel_atomic_get_required_bw(const struct drm_dp_tunnel_state *tunnel_state);
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struct drm_dp_tunnel_mgr *
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drm_dp_tunnel_mgr_create(struct drm_device *dev, int max_group_count);
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void drm_dp_tunnel_mgr_destroy(struct drm_dp_tunnel_mgr *mgr);
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#else
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static inline struct drm_dp_tunnel *
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drm_dp_tunnel_get(struct drm_dp_tunnel *tunnel, struct ref_tracker **tracker)
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{
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return NULL;
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}
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static inline void
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drm_dp_tunnel_put(struct drm_dp_tunnel *tunnel, struct ref_tracker **tracker) {}
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static inline void drm_dp_tunnel_ref_get(struct drm_dp_tunnel *tunnel,
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struct drm_dp_tunnel_ref *tunnel_ref) {}
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static inline void drm_dp_tunnel_ref_put(struct drm_dp_tunnel_ref *tunnel_ref) {}
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static inline struct drm_dp_tunnel *
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drm_dp_tunnel_detect(struct drm_dp_tunnel_mgr *mgr,
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struct drm_dp_aux *aux)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline int
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drm_dp_tunnel_destroy(struct drm_dp_tunnel *tunnel)
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{
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return 0;
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}
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static inline int drm_dp_tunnel_enable_bw_alloc(struct drm_dp_tunnel *tunnel)
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{
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return -EOPNOTSUPP;
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}
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static inline int drm_dp_tunnel_disable_bw_alloc(struct drm_dp_tunnel *tunnel)
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{
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return -EOPNOTSUPP;
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}
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static inline bool drm_dp_tunnel_bw_alloc_is_enabled(const struct drm_dp_tunnel *tunnel)
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{
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return false;
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}
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static inline int
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drm_dp_tunnel_alloc_bw(struct drm_dp_tunnel *tunnel, int bw)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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drm_dp_tunnel_get_allocated_bw(struct drm_dp_tunnel *tunnel)
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{
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return -1;
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}
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static inline int
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drm_dp_tunnel_update_state(struct drm_dp_tunnel *tunnel)
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{
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return -EOPNOTSUPP;
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}
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static inline void drm_dp_tunnel_set_io_error(struct drm_dp_tunnel *tunnel) {}
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static inline int
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drm_dp_tunnel_handle_irq(struct drm_dp_tunnel_mgr *mgr,
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struct drm_dp_aux *aux)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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drm_dp_tunnel_max_dprx_rate(const struct drm_dp_tunnel *tunnel)
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{
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return 0;
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}
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static inline int
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drm_dp_tunnel_max_dprx_lane_count(const struct drm_dp_tunnel *tunnel)
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{
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return 0;
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}
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static inline int
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drm_dp_tunnel_available_bw(const struct drm_dp_tunnel *tunnel)
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{
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return -1;
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}
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static inline const char *
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drm_dp_tunnel_name(const struct drm_dp_tunnel *tunnel)
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{
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return NULL;
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}
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static inline struct drm_dp_tunnel_state *
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drm_dp_tunnel_atomic_get_state(struct drm_atomic_state *state,
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struct drm_dp_tunnel *tunnel)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct drm_dp_tunnel_state *
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drm_dp_tunnel_atomic_get_new_state(struct drm_atomic_state *state,
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const struct drm_dp_tunnel *tunnel)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline int
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drm_dp_tunnel_atomic_set_stream_bw(struct drm_atomic_state *state,
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struct drm_dp_tunnel *tunnel,
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u8 stream_id, int bw)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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drm_dp_tunnel_atomic_get_group_streams_in_state(struct drm_atomic_state *state,
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const struct drm_dp_tunnel *tunnel,
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u32 *stream_mask)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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drm_dp_tunnel_atomic_check_stream_bws(struct drm_atomic_state *state,
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u32 *failed_stream_mask)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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drm_dp_tunnel_atomic_get_required_bw(const struct drm_dp_tunnel_state *tunnel_state)
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{
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return 0;
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}
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static inline struct drm_dp_tunnel_mgr *
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drm_dp_tunnel_mgr_create(struct drm_device *dev, int max_group_count)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline
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void drm_dp_tunnel_mgr_destroy(struct drm_dp_tunnel_mgr *mgr) {}
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#endif /* CONFIG_DRM_DISPLAY_DP_TUNNEL */
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#endif /* __DRM_DP_TUNNEL_H__ */
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