638 lines
17 KiB
C
638 lines
17 KiB
C
/*
|
|
* Copyright © 2014 Red Hat.
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
* the above copyright notice appear in all copies and that both that copyright
|
|
* notice and this permission notice appear in supporting documentation, and
|
|
* that the name of the copyright holders not be used in advertising or
|
|
* publicity pertaining to distribution of the software without specific,
|
|
* written prior permission. The copyright holders make no representations
|
|
* about the suitability of this software for any purpose. It is provided "as
|
|
* is" without express or implied warranty.
|
|
*
|
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
|
* OF THIS SOFTWARE.
|
|
*/
|
|
#ifndef _DRM_DP_MST_HELPER_H_
|
|
#define _DRM_DP_MST_HELPER_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <drm/drm_dp_helper.h>
|
|
#include <drm/drm_atomic.h>
|
|
|
|
struct drm_dp_mst_branch;
|
|
|
|
/**
|
|
* struct drm_dp_vcpi - Virtual Channel Payload Identifier
|
|
* @vcpi: Virtual channel ID.
|
|
* @pbn: Payload Bandwidth Number for this channel
|
|
* @aligned_pbn: PBN aligned with slot size
|
|
* @num_slots: number of slots for this PBN
|
|
*/
|
|
struct drm_dp_vcpi {
|
|
int vcpi;
|
|
int pbn;
|
|
int aligned_pbn;
|
|
int num_slots;
|
|
};
|
|
|
|
/**
|
|
* struct drm_dp_mst_port - MST port
|
|
* @kref: reference count for this port.
|
|
* @port_num: port number
|
|
* @input: if this port is an input port.
|
|
* @mcs: message capability status - DP 1.2 spec.
|
|
* @ddps: DisplayPort Device Plug Status - DP 1.2
|
|
* @pdt: Peer Device Type
|
|
* @ldps: Legacy Device Plug Status
|
|
* @dpcd_rev: DPCD revision of device on this port
|
|
* @num_sdp_streams: Number of simultaneous streams
|
|
* @num_sdp_stream_sinks: Number of stream sinks
|
|
* @available_pbn: Available bandwidth for this port.
|
|
* @next: link to next port on this branch device
|
|
* @mstb: branch device attach below this port
|
|
* @aux: i2c aux transport to talk to device connected to this port.
|
|
* @parent: branch device parent of this port
|
|
* @vcpi: Virtual Channel Payload info for this port.
|
|
* @connector: DRM connector this port is connected to.
|
|
* @mgr: topology manager this port lives under.
|
|
*
|
|
* This structure represents an MST port endpoint on a device somewhere
|
|
* in the MST topology.
|
|
*/
|
|
struct drm_dp_mst_port {
|
|
struct kref kref;
|
|
|
|
u8 port_num;
|
|
bool input;
|
|
bool mcs;
|
|
bool ddps;
|
|
u8 pdt;
|
|
bool ldps;
|
|
u8 dpcd_rev;
|
|
u8 num_sdp_streams;
|
|
u8 num_sdp_stream_sinks;
|
|
uint16_t available_pbn;
|
|
struct list_head next;
|
|
struct drm_dp_mst_branch *mstb; /* pointer to an mstb if this port has one */
|
|
struct drm_dp_aux aux; /* i2c bus for this port? */
|
|
struct drm_dp_mst_branch *parent;
|
|
|
|
struct drm_dp_vcpi vcpi;
|
|
struct drm_connector *connector;
|
|
struct drm_dp_mst_topology_mgr *mgr;
|
|
|
|
/**
|
|
* @cached_edid: for DP logical ports - make tiling work by ensuring
|
|
* that the EDID for all connectors is read immediately.
|
|
*/
|
|
struct edid *cached_edid;
|
|
/**
|
|
* @has_audio: Tracks whether the sink connector to this port is
|
|
* audio-capable.
|
|
*/
|
|
bool has_audio;
|
|
};
|
|
|
|
/**
|
|
* struct drm_dp_mst_branch - MST branch device.
|
|
* @kref: reference count for this port.
|
|
* @rad: Relative Address to talk to this branch device.
|
|
* @lct: Link count total to talk to this branch device.
|
|
* @num_ports: number of ports on the branch.
|
|
* @msg_slots: one bit per transmitted msg slot.
|
|
* @ports: linked list of ports on this branch.
|
|
* @port_parent: pointer to the port parent, NULL if toplevel.
|
|
* @mgr: topology manager for this branch device.
|
|
* @tx_slots: transmission slots for this device.
|
|
* @last_seqno: last sequence number used to talk to this.
|
|
* @link_address_sent: if a link address message has been sent to this device yet.
|
|
* @guid: guid for DP 1.2 branch device. port under this branch can be
|
|
* identified by port #.
|
|
*
|
|
* This structure represents an MST branch device, there is one
|
|
* primary branch device at the root, along with any other branches connected
|
|
* to downstream port of parent branches.
|
|
*/
|
|
struct drm_dp_mst_branch {
|
|
struct kref kref;
|
|
u8 rad[8];
|
|
u8 lct;
|
|
int num_ports;
|
|
|
|
int msg_slots;
|
|
struct list_head ports;
|
|
|
|
/* list of tx ops queue for this port */
|
|
struct drm_dp_mst_port *port_parent;
|
|
struct drm_dp_mst_topology_mgr *mgr;
|
|
|
|
/* slots are protected by mstb->mgr->qlock */
|
|
struct drm_dp_sideband_msg_tx *tx_slots[2];
|
|
int last_seqno;
|
|
bool link_address_sent;
|
|
|
|
/* global unique identifier to identify branch devices */
|
|
u8 guid[16];
|
|
};
|
|
|
|
|
|
/* sideband msg header - not bit struct */
|
|
struct drm_dp_sideband_msg_hdr {
|
|
u8 lct;
|
|
u8 lcr;
|
|
u8 rad[8];
|
|
bool broadcast;
|
|
bool path_msg;
|
|
u8 msg_len;
|
|
bool somt;
|
|
bool eomt;
|
|
bool seqno;
|
|
};
|
|
|
|
struct drm_dp_nak_reply {
|
|
u8 guid[16];
|
|
u8 reason;
|
|
u8 nak_data;
|
|
};
|
|
|
|
struct drm_dp_link_address_ack_reply {
|
|
u8 guid[16];
|
|
u8 nports;
|
|
struct drm_dp_link_addr_reply_port {
|
|
bool input_port;
|
|
u8 peer_device_type;
|
|
u8 port_number;
|
|
bool mcs;
|
|
bool ddps;
|
|
bool legacy_device_plug_status;
|
|
u8 dpcd_revision;
|
|
u8 peer_guid[16];
|
|
u8 num_sdp_streams;
|
|
u8 num_sdp_stream_sinks;
|
|
} ports[16];
|
|
};
|
|
|
|
struct drm_dp_remote_dpcd_read_ack_reply {
|
|
u8 port_number;
|
|
u8 num_bytes;
|
|
u8 bytes[255];
|
|
};
|
|
|
|
struct drm_dp_remote_dpcd_write_ack_reply {
|
|
u8 port_number;
|
|
};
|
|
|
|
struct drm_dp_remote_dpcd_write_nak_reply {
|
|
u8 port_number;
|
|
u8 reason;
|
|
u8 bytes_written_before_failure;
|
|
};
|
|
|
|
struct drm_dp_remote_i2c_read_ack_reply {
|
|
u8 port_number;
|
|
u8 num_bytes;
|
|
u8 bytes[255];
|
|
};
|
|
|
|
struct drm_dp_remote_i2c_read_nak_reply {
|
|
u8 port_number;
|
|
u8 nak_reason;
|
|
u8 i2c_nak_transaction;
|
|
};
|
|
|
|
struct drm_dp_remote_i2c_write_ack_reply {
|
|
u8 port_number;
|
|
};
|
|
|
|
|
|
struct drm_dp_sideband_msg_rx {
|
|
u8 chunk[48];
|
|
u8 msg[256];
|
|
u8 curchunk_len;
|
|
u8 curchunk_idx; /* chunk we are parsing now */
|
|
u8 curchunk_hdrlen;
|
|
u8 curlen; /* total length of the msg */
|
|
bool have_somt;
|
|
bool have_eomt;
|
|
struct drm_dp_sideband_msg_hdr initial_hdr;
|
|
};
|
|
|
|
#define DRM_DP_MAX_SDP_STREAMS 16
|
|
struct drm_dp_allocate_payload {
|
|
u8 port_number;
|
|
u8 number_sdp_streams;
|
|
u8 vcpi;
|
|
u16 pbn;
|
|
u8 sdp_stream_sink[DRM_DP_MAX_SDP_STREAMS];
|
|
};
|
|
|
|
struct drm_dp_allocate_payload_ack_reply {
|
|
u8 port_number;
|
|
u8 vcpi;
|
|
u16 allocated_pbn;
|
|
};
|
|
|
|
struct drm_dp_connection_status_notify {
|
|
u8 guid[16];
|
|
u8 port_number;
|
|
bool legacy_device_plug_status;
|
|
bool displayport_device_plug_status;
|
|
bool message_capability_status;
|
|
bool input_port;
|
|
u8 peer_device_type;
|
|
};
|
|
|
|
struct drm_dp_remote_dpcd_read {
|
|
u8 port_number;
|
|
u32 dpcd_address;
|
|
u8 num_bytes;
|
|
};
|
|
|
|
struct drm_dp_remote_dpcd_write {
|
|
u8 port_number;
|
|
u32 dpcd_address;
|
|
u8 num_bytes;
|
|
u8 *bytes;
|
|
};
|
|
|
|
#define DP_REMOTE_I2C_READ_MAX_TRANSACTIONS 4
|
|
struct drm_dp_remote_i2c_read {
|
|
u8 num_transactions;
|
|
u8 port_number;
|
|
struct {
|
|
u8 i2c_dev_id;
|
|
u8 num_bytes;
|
|
u8 *bytes;
|
|
u8 no_stop_bit;
|
|
u8 i2c_transaction_delay;
|
|
} transactions[DP_REMOTE_I2C_READ_MAX_TRANSACTIONS];
|
|
u8 read_i2c_device_id;
|
|
u8 num_bytes_read;
|
|
};
|
|
|
|
struct drm_dp_remote_i2c_write {
|
|
u8 port_number;
|
|
u8 write_i2c_device_id;
|
|
u8 num_bytes;
|
|
u8 *bytes;
|
|
};
|
|
|
|
/* this covers ENUM_RESOURCES, POWER_DOWN_PHY, POWER_UP_PHY */
|
|
struct drm_dp_port_number_req {
|
|
u8 port_number;
|
|
};
|
|
|
|
struct drm_dp_enum_path_resources_ack_reply {
|
|
u8 port_number;
|
|
u16 full_payload_bw_number;
|
|
u16 avail_payload_bw_number;
|
|
};
|
|
|
|
/* covers POWER_DOWN_PHY, POWER_UP_PHY */
|
|
struct drm_dp_port_number_rep {
|
|
u8 port_number;
|
|
};
|
|
|
|
struct drm_dp_query_payload {
|
|
u8 port_number;
|
|
u8 vcpi;
|
|
};
|
|
|
|
struct drm_dp_resource_status_notify {
|
|
u8 port_number;
|
|
u8 guid[16];
|
|
u16 available_pbn;
|
|
};
|
|
|
|
struct drm_dp_query_payload_ack_reply {
|
|
u8 port_number;
|
|
u8 allocated_pbn;
|
|
};
|
|
|
|
struct drm_dp_sideband_msg_req_body {
|
|
u8 req_type;
|
|
union ack_req {
|
|
struct drm_dp_connection_status_notify conn_stat;
|
|
struct drm_dp_port_number_req port_num;
|
|
struct drm_dp_resource_status_notify resource_stat;
|
|
|
|
struct drm_dp_query_payload query_payload;
|
|
struct drm_dp_allocate_payload allocate_payload;
|
|
|
|
struct drm_dp_remote_dpcd_read dpcd_read;
|
|
struct drm_dp_remote_dpcd_write dpcd_write;
|
|
|
|
struct drm_dp_remote_i2c_read i2c_read;
|
|
struct drm_dp_remote_i2c_write i2c_write;
|
|
} u;
|
|
};
|
|
|
|
struct drm_dp_sideband_msg_reply_body {
|
|
u8 reply_type;
|
|
u8 req_type;
|
|
union ack_replies {
|
|
struct drm_dp_nak_reply nak;
|
|
struct drm_dp_link_address_ack_reply link_addr;
|
|
struct drm_dp_port_number_rep port_number;
|
|
|
|
struct drm_dp_enum_path_resources_ack_reply path_resources;
|
|
struct drm_dp_allocate_payload_ack_reply allocate_payload;
|
|
struct drm_dp_query_payload_ack_reply query_payload;
|
|
|
|
struct drm_dp_remote_dpcd_read_ack_reply remote_dpcd_read_ack;
|
|
struct drm_dp_remote_dpcd_write_ack_reply remote_dpcd_write_ack;
|
|
struct drm_dp_remote_dpcd_write_nak_reply remote_dpcd_write_nack;
|
|
|
|
struct drm_dp_remote_i2c_read_ack_reply remote_i2c_read_ack;
|
|
struct drm_dp_remote_i2c_read_nak_reply remote_i2c_read_nack;
|
|
struct drm_dp_remote_i2c_write_ack_reply remote_i2c_write_ack;
|
|
} u;
|
|
};
|
|
|
|
/* msg is queued to be put into a slot */
|
|
#define DRM_DP_SIDEBAND_TX_QUEUED 0
|
|
/* msg has started transmitting on a slot - still on msgq */
|
|
#define DRM_DP_SIDEBAND_TX_START_SEND 1
|
|
/* msg has finished transmitting on a slot - removed from msgq only in slot */
|
|
#define DRM_DP_SIDEBAND_TX_SENT 2
|
|
/* msg has received a response - removed from slot */
|
|
#define DRM_DP_SIDEBAND_TX_RX 3
|
|
#define DRM_DP_SIDEBAND_TX_TIMEOUT 4
|
|
|
|
struct drm_dp_sideband_msg_tx {
|
|
u8 msg[256];
|
|
u8 chunk[48];
|
|
u8 cur_offset;
|
|
u8 cur_len;
|
|
struct drm_dp_mst_branch *dst;
|
|
struct list_head next;
|
|
int seqno;
|
|
int state;
|
|
bool path_msg;
|
|
struct drm_dp_sideband_msg_reply_body reply;
|
|
};
|
|
|
|
/* sideband msg handler */
|
|
struct drm_dp_mst_topology_mgr;
|
|
struct drm_dp_mst_topology_cbs {
|
|
/* create a connector for a port */
|
|
struct drm_connector *(*add_connector)(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *path);
|
|
void (*register_connector)(struct drm_connector *connector);
|
|
void (*destroy_connector)(struct drm_dp_mst_topology_mgr *mgr,
|
|
struct drm_connector *connector);
|
|
void (*hotplug)(struct drm_dp_mst_topology_mgr *mgr);
|
|
|
|
};
|
|
|
|
#define DP_MAX_PAYLOAD (sizeof(unsigned long) * 8)
|
|
|
|
#define DP_PAYLOAD_LOCAL 1
|
|
#define DP_PAYLOAD_REMOTE 2
|
|
#define DP_PAYLOAD_DELETE_LOCAL 3
|
|
|
|
struct drm_dp_payload {
|
|
int payload_state;
|
|
int start_slot;
|
|
int num_slots;
|
|
int vcpi;
|
|
};
|
|
|
|
#define to_dp_mst_topology_state(x) container_of(x, struct drm_dp_mst_topology_state, base)
|
|
|
|
struct drm_dp_mst_topology_state {
|
|
struct drm_private_state base;
|
|
int avail_slots;
|
|
struct drm_atomic_state *state;
|
|
struct drm_dp_mst_topology_mgr *mgr;
|
|
};
|
|
|
|
#define to_dp_mst_topology_mgr(x) container_of(x, struct drm_dp_mst_topology_mgr, base)
|
|
|
|
/**
|
|
* struct drm_dp_mst_topology_mgr - DisplayPort MST manager
|
|
*
|
|
* This struct represents the toplevel displayport MST topology manager.
|
|
* There should be one instance of this for every MST capable DP connector
|
|
* on the GPU.
|
|
*/
|
|
struct drm_dp_mst_topology_mgr {
|
|
/**
|
|
* @base: Base private object for atomic
|
|
*/
|
|
struct drm_private_obj base;
|
|
|
|
/**
|
|
* @dev: device pointer for adding i2c devices etc.
|
|
*/
|
|
struct drm_device *dev;
|
|
/**
|
|
* @cbs: callbacks for connector addition and destruction.
|
|
*/
|
|
const struct drm_dp_mst_topology_cbs *cbs;
|
|
/**
|
|
* @max_dpcd_transaction_bytes: maximum number of bytes to read/write
|
|
* in one go.
|
|
*/
|
|
int max_dpcd_transaction_bytes;
|
|
/**
|
|
* @aux: AUX channel for the DP MST connector this topolgy mgr is
|
|
* controlling.
|
|
*/
|
|
struct drm_dp_aux *aux;
|
|
/**
|
|
* @max_payloads: maximum number of payloads the GPU can generate.
|
|
*/
|
|
int max_payloads;
|
|
/**
|
|
* @conn_base_id: DRM connector ID this mgr is connected to. Only used
|
|
* to build the MST connector path value.
|
|
*/
|
|
int conn_base_id;
|
|
|
|
/**
|
|
* @down_rep_recv: Message receiver state for down replies. This and
|
|
* @up_req_recv are only ever access from the work item, which is
|
|
* serialised.
|
|
*/
|
|
struct drm_dp_sideband_msg_rx down_rep_recv;
|
|
/**
|
|
* @up_req_recv: Message receiver state for up requests. This and
|
|
* @down_rep_recv are only ever access from the work item, which is
|
|
* serialised.
|
|
*/
|
|
struct drm_dp_sideband_msg_rx up_req_recv;
|
|
|
|
/**
|
|
* @lock: protects mst state, primary, dpcd.
|
|
*/
|
|
struct mutex lock;
|
|
|
|
/**
|
|
* @mst_state: If this manager is enabled for an MST capable port. False
|
|
* if no MST sink/branch devices is connected.
|
|
*/
|
|
bool mst_state;
|
|
/**
|
|
* @mst_primary: Pointer to the primary/first branch device.
|
|
*/
|
|
struct drm_dp_mst_branch *mst_primary;
|
|
|
|
/**
|
|
* @dpcd: Cache of DPCD for primary port.
|
|
*/
|
|
u8 dpcd[DP_RECEIVER_CAP_SIZE];
|
|
/**
|
|
* @sink_count: Sink count from DEVICE_SERVICE_IRQ_VECTOR_ESI0.
|
|
*/
|
|
u8 sink_count;
|
|
/**
|
|
* @pbn_div: PBN to slots divisor.
|
|
*/
|
|
int pbn_div;
|
|
|
|
/**
|
|
* @state: State information for topology manager
|
|
*/
|
|
struct drm_dp_mst_topology_state *state;
|
|
|
|
/**
|
|
* @funcs: Atomic helper callbacks
|
|
*/
|
|
const struct drm_private_state_funcs *funcs;
|
|
|
|
/**
|
|
* @qlock: protects @tx_msg_downq, the &drm_dp_mst_branch.txslost and
|
|
* &drm_dp_sideband_msg_tx.state once they are queued
|
|
*/
|
|
struct mutex qlock;
|
|
/**
|
|
* @tx_msg_downq: List of pending down replies.
|
|
*/
|
|
struct list_head tx_msg_downq;
|
|
|
|
/**
|
|
* @payload_lock: Protect payload information.
|
|
*/
|
|
struct mutex payload_lock;
|
|
/**
|
|
* @proposed_vcpis: Array of pointers for the new VCPI allocation. The
|
|
* VCPI structure itself is &drm_dp_mst_port.vcpi.
|
|
*/
|
|
struct drm_dp_vcpi **proposed_vcpis;
|
|
/**
|
|
* @payloads: Array of payloads.
|
|
*/
|
|
struct drm_dp_payload *payloads;
|
|
/**
|
|
* @payload_mask: Elements of @payloads actually in use. Since
|
|
* reallocation of active outputs isn't possible gaps can be created by
|
|
* disabling outputs out of order compared to how they've been enabled.
|
|
*/
|
|
unsigned long payload_mask;
|
|
/**
|
|
* @vcpi_mask: Similar to @payload_mask, but for @proposed_vcpis.
|
|
*/
|
|
unsigned long vcpi_mask;
|
|
|
|
/**
|
|
* @tx_waitq: Wait to queue stall for the tx worker.
|
|
*/
|
|
wait_queue_head_t tx_waitq;
|
|
/**
|
|
* @work: Probe work.
|
|
*/
|
|
struct work_struct work;
|
|
/**
|
|
* @tx_work: Sideband transmit worker. This can nest within the main
|
|
* @work worker for each transaction @work launches.
|
|
*/
|
|
struct work_struct tx_work;
|
|
|
|
/**
|
|
* @destroy_connector_list: List of to be destroyed connectors.
|
|
*/
|
|
struct list_head destroy_connector_list;
|
|
/**
|
|
* @destroy_connector_lock: Protects @connector_list.
|
|
*/
|
|
struct mutex destroy_connector_lock;
|
|
/**
|
|
* @destroy_connector_work: Work item to destroy connectors. Needed to
|
|
* avoid locking inversion.
|
|
*/
|
|
struct work_struct destroy_connector_work;
|
|
};
|
|
|
|
int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr,
|
|
struct drm_device *dev, struct drm_dp_aux *aux,
|
|
int max_dpcd_transaction_bytes,
|
|
int max_payloads, int conn_base_id);
|
|
|
|
void drm_dp_mst_topology_mgr_destroy(struct drm_dp_mst_topology_mgr *mgr);
|
|
|
|
|
|
int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool mst_state);
|
|
|
|
|
|
int drm_dp_mst_hpd_irq(struct drm_dp_mst_topology_mgr *mgr, u8 *esi, bool *handled);
|
|
|
|
|
|
enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
|
|
|
|
bool drm_dp_mst_port_has_audio(struct drm_dp_mst_topology_mgr *mgr,
|
|
struct drm_dp_mst_port *port);
|
|
struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
|
|
|
|
|
|
int drm_dp_calc_pbn_mode(int clock, int bpp);
|
|
|
|
|
|
bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr,
|
|
struct drm_dp_mst_port *port, int pbn, int slots);
|
|
|
|
int drm_dp_mst_get_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
|
|
|
|
|
|
void drm_dp_mst_reset_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
|
|
|
|
|
|
void drm_dp_mst_deallocate_vcpi(struct drm_dp_mst_topology_mgr *mgr,
|
|
struct drm_dp_mst_port *port);
|
|
|
|
|
|
int drm_dp_find_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr,
|
|
int pbn);
|
|
|
|
|
|
int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr);
|
|
|
|
|
|
int drm_dp_update_payload_part2(struct drm_dp_mst_topology_mgr *mgr);
|
|
|
|
int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr);
|
|
|
|
void drm_dp_mst_dump_topology(struct seq_file *m,
|
|
struct drm_dp_mst_topology_mgr *mgr);
|
|
|
|
void drm_dp_mst_topology_mgr_suspend(struct drm_dp_mst_topology_mgr *mgr);
|
|
int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr);
|
|
struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_atomic_state *state,
|
|
struct drm_dp_mst_topology_mgr *mgr);
|
|
int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state,
|
|
struct drm_dp_mst_topology_mgr *mgr,
|
|
struct drm_dp_mst_port *port, int pbn);
|
|
int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state,
|
|
struct drm_dp_mst_topology_mgr *mgr,
|
|
int slots);
|
|
int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr,
|
|
struct drm_dp_mst_port *port, bool power_up);
|
|
|
|
#endif
|