dptx: MST: Clean-up, documentation, and general organization.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion
Jagannadha Sutradharudu Teki
parent
79093491e1
commit
3d6faf54b3
5 changed files with 1386 additions and 486 deletions
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@ -609,7 +609,7 @@ u32 XDptx_AuxRead(XDptx *InstancePtr, u32 Address, u32 NumBytes, void *Data)
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* to be written to the RX device.
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*
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* @return
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* - XST_SUCCESS if AUX write request was successfully
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* - XST_SUCCESS if the AUX write request was successfully
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* acknowledged.
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* - XST_DEVICE_NOT_FOUND if no RX device is connected.
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* - XST_ERROR_COUNT_MAX if the AUX request timed out.
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@ -155,7 +155,6 @@
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*
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* <b>Limitations</b>
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*
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* - The driver currently supports single-stream transport (SST) functionality.
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* - The driver does not handle audio. See the audio example in the driver
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* examples directory for the required sequence for enabling audio.
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*
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@ -182,32 +181,6 @@
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#include "xil_assert.h"
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#include "xil_types.h"
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/* Need to reorganize this... */
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/* To add to xstatus.h. */
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#define XST_CRC_ERROR 30L
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#define XDPTX_SBMSG_LINK_ADDRESS 0x01
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#define XDPTX_SBMSG_ENUM_PATH_RESOURCES 0x10
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#define XDPTX_SBMSG_ALLOCATE_PAYLOAD 0x11
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#define XDPTX_SBMSG_CLEAR_PAYLOAD_ID_TABLE 0x14
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#define XDPTX_SBMSG_REMOTE_DPCD_READ 0x20
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#define XDPTX_SBMSG_REMOTE_DPCD_WRITE 0x21
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#define XDPTX_SBMSG_REMOTE_I2C_READ 0x22
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/* When returning the reason for NACK reply, XST_SBREPLY_NACK is added in order
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* to differentiate between the return codes in xstatus.h. */
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#define XST_SBREPLY_NACK 1452L
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#define XDPTX_SBREPLY_NACK_WRITE_FAILURE 0x01
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#define XDPTX_SBREPLY_NACK_INVALID_RAD 0x02
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#define XDPTX_SBREPLY_NACK_CRC_FAILURE 0x03
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#define XDPTX_SBREPLY_NACK_BAD_PARAM 0x04
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#define XDPTX_SBREPLY_NACK_DEFER 0x05
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#define XDPTX_SBREPLY_NACK_LINK_FAILURE 0x06
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#define XDPTX_SBREPLY_NACK_NO_RESOURCES 0x07
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#define XDPTX_SBREPLY_NACK_DPCD_FAIL 0x08
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#define XDPTX_SBREPLY_NACK_I2C_NAK 0x09
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#define XDPTX_SBREPLY_NACK_ALLOCATE_FAIL 0x0A
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/******************* Macros (Inline Functions) Definitions ********************/
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/******************************************************************************/
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@ -490,10 +463,14 @@ typedef struct {
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in use by the video stream. */
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} XDptx_MainStreamAttributes;
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/**
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* This typedef describes a stream when the driver is running in multi-stream
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* transport (MST) mode.
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*/
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typedef struct {
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u8 LinkCountTotal; /** The total number of DisplayPort
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links from the DisplayPort TX
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to the sink device that this MST
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links from the DisplayPort TX to
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the sink device that this MST
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stream is targeting.*/
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u8 RelativeAddress[15]; /** The relative address from the
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DisplayPort TX to the sink
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@ -507,6 +484,49 @@ typedef struct {
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MSA configuration. */
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} XDptx_MstStream;
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/**
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* This typedef describes a downstream DisplayPort device when the driver is
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* running in multi-stream transport (MST) mode.
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*/
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typedef struct {
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u32 Guid[4]; /**< The global unique identifier (GUID)
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of the device. */
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u8 RelativeAddress[15]; /**< The relative address from the
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DisplayPort TX to this
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device. */
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u8 DeviceType; /**< The type of DisplayPort device.
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Either a branch or sink. */
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u8 LinkCountTotal; /**< The total number of DisplayPort
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links connecting this device to
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the DisplayPort TX. */
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u8 DpcdRev; /**< The revision of the device's
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DisplayPort Configuration Data
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(DPCD). For this device to
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support MST features, this value
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must represent a protocl version
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greater or equal to 1.2. */
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u8 MsgCapStatus; /**< This device is capable of sending
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and receiving sideband
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messages. */
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} XDptx_TopologyNode;
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/**
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* This typedef describes a the entire topology of connected downstream
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* DisplayPort devices (from the DisplayPort TX) when the driver is operating
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* in multi-stream transport (MST) mode.
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*/
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typedef struct {
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u8 NodeTotal;
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XDptx_TopologyNode NodeTable[63];
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u8 SinkTotal;
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XDptx_TopologyNode *SinkList[63];
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} XDptx_Topology;
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/**
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* This typedef describes a port that is connected to a DisplayPort branch
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* device. This structure is used when the driver is operating in multi-stream
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* transport (MST) mode.
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*/
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typedef struct {
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u8 InputPort;
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u8 PeerDeviceType;
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@ -521,6 +541,10 @@ typedef struct {
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u8 NumSdpStreamSinks;
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} XDptx_SbMsgLinkAddressReplyPortDetail;
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/**
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* This typedef describes a DisplayPort branch device. This structure is used
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* when the driver is operating in multi-stream transport (MST) mode.
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*/
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typedef struct {
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u8 ReplyType;
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u8 RequestId;
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@ -571,22 +595,6 @@ typedef void (*XDptx_HpdEventHandler)(void *InstancePtr);
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*******************************************************************************/
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typedef void (*XDptx_HpdPulseHandler)(void *InstancePtr);
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typedef struct {
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u32 Guid[4];
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u8 RelativeAddress[15];
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u8 DeviceType;
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u8 LinkCountTotal;
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u8 DpcdRev;
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u8 MsgCapStatus;
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} XDptx_TopologyNode;
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typedef struct {
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u8 NodeTotal;
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XDptx_TopologyNode NodeTable[63];
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u8 SinkTotal;
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XDptx_TopologyNode *SinkList[63];
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} XDptx_Topology;
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/**
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* The XDptx driver instance data. The user is required to allocate a variable
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* of this type for every XDptx device in the system. A pointer to a variable of
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@ -625,7 +633,11 @@ typedef struct {
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for a multi-stream
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transport (MST)
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stream. */
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XDptx_Topology Topology;
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XDptx_Topology Topology; /**< The topology of connected
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downstream DisplayPort
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devices when the driver
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is running in MST
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mode. */
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XDptx_TimerHandler UserTimerWaitUs; /**< Custom user function for
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delay/sleep. */
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void *UserTimerPtr; /**< Pointer to a timer instance
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@ -714,30 +726,53 @@ u32 XDptx_SelfTest(XDptx *InstancePtr);
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/* xdptx_sinit.c: Configuration extraction function.*/
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XDptx_Config *XDptx_LookupConfig(u16 DeviceId);
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/* xdptx_mst.c: Multi-stream transport (MST) functions. */
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/* xdptx_mst.c: Multi-stream transport (MST) functions for enabling or disabling
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* MST mode. */
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void XDptx_MstCfgModeEnable(XDptx *InstancePtr);
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void XDptx_MstCfgModeDisable(XDptx *InstancePtr);
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u32 XDptx_MstEnable(XDptx *InstancePtr);
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u32 XDptx_MstDisable(XDptx *InstancePtr);
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/* xdptx_mst.c: Multi-stream transport (MST) functions for enabling or disabling
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* MST streams and selecting their associated target sinks. */
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void XDptx_MstCfgStreamEnable(XDptx *InstancePtr, u8 Stream);
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void XDptx_MstCfgStreamDisable(XDptx *InstancePtr, u8 Stream);
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u8 XDptx_MstStreamIsEnabled(XDptx *InstancePtr, u8 Stream);
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void XDptx_SetStreamSelectFromSinkList(XDptx *InstancePtr, u8 Stream, u8
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SinkNum);
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void XDptx_SetStreamSinkRad(XDptx *InstancePtr, u8 Stream, u8 LinkCountTotal,
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u8 *RelativeAddress);
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u32 XDptx_MstEnable(XDptx *InstancePtr);
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u32 XDptx_MstDisable(XDptx *InstancePtr);
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/* xdptx_mst.c: Multi-stream transport (MST) functions related to MST topology
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* discovery. */
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void XDptx_FindAccessibleDpDevices(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress);
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void XDptx_WriteGuid(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress,
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u32 Guid[4]);
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void XDptx_GetGuid(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress,
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u32 *Guid);
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/* xdptx_mst.c: Multi-stream transport (MST) functions related to MST stream
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* allocation. */
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u32 XDptx_AllocatePayloadStreams(XDptx *InstancePtr);
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void XDptx_SetStreamSelectFromSinkList(XDptx *InstancePtr, u8 Stream, u8 SinkNum);
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void XDptx_SetStreamSinkRad(XDptx *InstancePtr, u8 Stream, u8 LinkCountTotal, u8 *RelativeAddress);
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u32 XDptx_AllocatePayloadVcIdTable(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress, u8 VcId, u16 Pbn, u8 Ts);
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u32 XDptx_ClearPayloadVcIdTable(XDptx *InstancePtr);
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void XDptx_FindAccessibleDpDevices(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress);
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void XDptx_WriteGuid(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, u32 Guid[4]);
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void XDptx_GetGuid(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, u32 *Guid);
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/* Sideband messages. */
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u32 XDptx_SendSbMsgRemoteDpcdWrite(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, u32 DpcdAddress, u8 BytesToWrite, u8 *WriteData);
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u32 XDptx_SendSbMsgRemoteDpcdRead(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, u32 DpcdAddress, u8 BytesToRead, u8 *ReadData);
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u32 XDptx_SendSbMsgRemoteIicRead(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, u32 IicDeviceId, u8 BytesToRead, u8 *ReadData);
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u32 XDptx_SendSbMsgLinkAddress(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, XDptx_SbMsgLinkAddressReplyDeviceInfo *FormatReply);
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u32 XDptx_SendSbMsgEnumPathResources(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, u16 *AvailPbn, u16 *FullPbn);
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u32 XDptx_SendSbMsgAllocatePayload(XDptx *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress, u8 VcId, u16 Pbn);
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/* xdptx_mst.c: Multi-stream transport (MST) functions for issuing sideband
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* messages. */
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u32 XDptx_SendSbMsgRemoteDpcdWrite(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress, u32 DpcdAddress, u8 BytesToWrite, u8 *WriteData);
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u32 XDptx_SendSbMsgRemoteDpcdRead(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress, u32 DpcdAddress, u8 BytesToRead, u8 *ReadData);
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u32 XDptx_SendSbMsgRemoteIicRead(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress, u32 IicDeviceId, u8 BytesToRead, u8 *ReadData);
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u32 XDptx_SendSbMsgLinkAddress(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress, XDptx_SbMsgLinkAddressReplyDeviceInfo *DeviceInfo);
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u32 XDptx_SendSbMsgEnumPathResources(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress, u16 *AvailPbn, u16 *FullPbn);
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u32 XDptx_SendSbMsgAllocatePayload(XDptx *InstancePtr, u8 LinkCountTotal,
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u8 *RelativeAddress, u8 VcId, u16 Pbn);
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u32 XDptx_SendSbMsgClearPayloadIdTable(XDptx *InstancePtr);
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#endif /* XDPTX_H_ */
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@ -1156,6 +1156,32 @@
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#define XDPTX_EDID_DTD_SIGNAL_VPOLARITY_SHIFT 2
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/* @} */
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/******************************************************************************/
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/**
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* Multi-stream transport (MST) definitions.
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*
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*******************************************************************************/
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/** @name Stream identification.
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* @{
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*/
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#define XDPTX_STREAM_ID1 1
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#define XDPTX_STREAM_ID2 2
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#define XDPTX_STREAM_ID3 3
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#define XDPTX_STREAM_ID4 4
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/* @} */
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/** @name Sideband message codes when the driver is in MST mode.
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* @{
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*/
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#define XDPTX_SBMSG_LINK_ADDRESS 0x01
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#define XDPTX_SBMSG_ENUM_PATH_RESOURCES 0x10
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#define XDPTX_SBMSG_ALLOCATE_PAYLOAD 0x11
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#define XDPTX_SBMSG_CLEAR_PAYLOAD_ID_TABLE 0x14
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#define XDPTX_SBMSG_REMOTE_DPCD_READ 0x20
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#define XDPTX_SBMSG_REMOTE_DPCD_WRITE 0x21
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#define XDPTX_SBMSG_REMOTE_I2C_READ 0x22
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/* @} */
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/******************* Macros (Inline Functions) Definitions ********************/
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/** @name Register access macro definitions.
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File diff suppressed because it is too large
Load diff
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@ -663,6 +663,24 @@ void XDptx_SetMsaValues(XDptx *InstancePtr, u8 Stream)
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StreamOffset[Stream - 1], MsaConfig->InitWait);
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}
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/******************************************************************************/
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/**
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* When the driver is in multi-stream transport (MST) mode, this function will
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* make the necessary calculations to describe a stream in MST mode. The key
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* values are the payload bandwidth number (PBN), the number of timeslots
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* required for allocating the bandwidth, and the average bytes per transfer
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* unit (both the integer and the fractional part).
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*
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* @param InstancePtr is a pointer to the XDptx instance.
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* @param Stream is the stream number to make the calculations for.
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* @param BitsPerPixel is the number of bits that is used to store one
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* pixel.
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*
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* @return None.
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*
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* @note None.
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*
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*******************************************************************************/
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static void XDptx_CalculateTs(XDptx *InstancePtr, u8 Stream, u8 BitsPerPixel)
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{
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XDptx_MainStreamAttributes *MsaConfig =
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