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Commit 3c8a0922 authored by Dave Airlie's avatar Dave Airlie
Browse files

drm/dp_helper: add defines for DP 1.2 and MST support. (v2) 



This just adds the defines from the DP 1.2 spec, which we
will use later.

fix some DP MST to 1.2 MST

Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
Reviewed-by: default avatarTodd Previte <tprevite@gmail.com>
Reviewed-by: default avatarJingoo Han <jg1.han@samsung.com>
parent 263432b0

include/drm/drm_dp_helper.h

+78 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
 * eDP: Embedded DisplayPort version 1

 * DPI: DisplayPort Interoperability Guideline v1.1a

 * 1.2: DisplayPort 1.2

 * MST: Multistream Transport - part of DP 1.2a

 *

 * 1.2 formally includes both eDP and DPI definitions.

 */
@@ -103,9 +104,14 @@ 
#define DP_TRAINING_AUX_RD_INTERVAL         0x00e   /* XXX 1.2? */



/* Multiple stream transport */

#define DP_FAUX_CAP			    0x020   /* 1.2 */

# define DP_FAUX_CAP_1			    (1 << 0)



#define DP_MSTM_CAP			    0x021   /* 1.2 */

# define DP_MST_CAP			    (1 << 0)



#define DP_GUID				    0x030   /* 1.2 */



#define DP_PSR_SUPPORT                      0x070   /* XXX 1.2? */

# define DP_PSR_IS_SUPPORTED                1

#define DP_PSR_CAPS                         0x071   /* XXX 1.2? */
@@ -221,6 +227,16 @@ 
# define DP_PSR_CRC_VERIFICATION	    (1 << 2)

# define DP_PSR_FRAME_CAPTURE		    (1 << 3)



#define DP_ADAPTER_CTRL			    0x1a0

# define DP_ADAPTER_CTRL_FORCE_LOAD_SENSE   (1 << 0)



#define DP_BRANCH_DEVICE_CTRL		    0x1a1

# define DP_BRANCH_DEVICE_IRQ_HPD	    (1 << 0)



#define DP_PAYLOAD_ALLOCATE_SET		    0x1c0

#define DP_PAYLOAD_ALLOCATE_START_TIME_SLOT 0x1c1

#define DP_PAYLOAD_ALLOCATE_TIME_SLOT_COUNT 0x1c2



#define DP_SINK_COUNT			    0x200

/* prior to 1.2 bit 7 was reserved mbz */

# define DP_GET_SINK_COUNT(x)		    ((((x) & 0x80) >> 1) | ((x) & 0x3f))
@@ -230,6 +246,9 @@ 
# define DP_REMOTE_CONTROL_COMMAND_PENDING  (1 << 0)

# define DP_AUTOMATED_TEST_REQUEST	    (1 << 1)

# define DP_CP_IRQ			    (1 << 2)

# define DP_MCCS_IRQ			    (1 << 3)

# define DP_DOWN_REP_MSG_RDY		    (1 << 4) /* 1.2 MST */

# define DP_UP_REQ_MSG_RDY		    (1 << 5) /* 1.2 MST */

# define DP_SINK_SPECIFIC_IRQ		    (1 << 6)



#define DP_LANE0_1_STATUS		    0x202
@@ -294,6 +313,13 @@ 
#define DP_TEST_SINK			    0x270

#define DP_TEST_SINK_START	    (1 << 0)



#define DP_PAYLOAD_TABLE_UPDATE_STATUS      0x2c0   /* 1.2 MST */

# define DP_PAYLOAD_TABLE_UPDATED           (1 << 0)

# define DP_PAYLOAD_ACT_HANDLED             (1 << 1)



#define DP_VC_PAYLOAD_ID_SLOT_1             0x2c1   /* 1.2 MST */

/* up to ID_SLOT_63 at 0x2ff */



#define DP_SOURCE_OUI			    0x300

#define DP_SINK_OUI			    0x400

#define DP_BRANCH_OUI			    0x500
@@ -303,6 +329,21 @@ 
# define DP_SET_POWER_D3                    0x2

# define DP_SET_POWER_MASK                  0x3



#define DP_SIDEBAND_MSG_DOWN_REQ_BASE	    0x1000   /* 1.2 MST */

#define DP_SIDEBAND_MSG_UP_REP_BASE	    0x1200   /* 1.2 MST */

#define DP_SIDEBAND_MSG_DOWN_REP_BASE	    0x1400   /* 1.2 MST */

#define DP_SIDEBAND_MSG_UP_REQ_BASE	    0x1600   /* 1.2 MST */



#define DP_SINK_COUNT_ESI		    0x2002   /* 1.2 */

/* 0-5 sink count */

# define DP_SINK_COUNT_CP_READY             (1 << 6)



#define DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0   0x2003   /* 1.2 */



#define DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1   0x2004   /* 1.2 */



#define DP_LINK_SERVICE_IRQ_VECTOR_ESI0     0x2005   /* 1.2 */



#define DP_PSR_ERROR_STATUS                 0x2006  /* XXX 1.2? */

# define DP_PSR_LINK_CRC_ERROR              (1 << 0)

# define DP_PSR_RFB_STORAGE_ERROR           (1 << 1)
@@ -319,6 +360,43 @@ 
# define DP_PSR_SINK_INTERNAL_ERROR         7

# define DP_PSR_SINK_STATE_MASK             0x07



/* DP 1.2 Sideband message defines */

/* peer device type - DP 1.2a Table 2-92 */

#define DP_PEER_DEVICE_NONE		0x0

#define DP_PEER_DEVICE_SOURCE_OR_SST	0x1

#define DP_PEER_DEVICE_MST_BRANCHING	0x2

#define DP_PEER_DEVICE_SST_SINK		0x3

#define DP_PEER_DEVICE_DP_LEGACY_CONV	0x4



/* DP 1.2 MST sideband request names DP 1.2a Table 2-80 */

#define DP_LINK_ADDRESS			0x01

#define DP_CONNECTION_STATUS_NOTIFY	0x02

#define DP_ENUM_PATH_RESOURCES		0x10

#define DP_ALLOCATE_PAYLOAD		0x11

#define DP_QUERY_PAYLOAD		0x12

#define DP_RESOURCE_STATUS_NOTIFY	0x13

#define DP_CLEAR_PAYLOAD_ID_TABLE	0x14

#define DP_REMOTE_DPCD_READ		0x20

#define DP_REMOTE_DPCD_WRITE		0x21

#define DP_REMOTE_I2C_READ		0x22

#define DP_REMOTE_I2C_WRITE		0x23

#define DP_POWER_UP_PHY			0x24

#define DP_POWER_DOWN_PHY		0x25

#define DP_SINK_EVENT_NOTIFY		0x30

#define DP_QUERY_STREAM_ENC_STATUS	0x38



/* DP 1.2 MST sideband nak reasons - table 2.84 */

#define DP_NAK_WRITE_FAILURE		0x01

#define DP_NAK_INVALID_READ		0x02

#define DP_NAK_CRC_FAILURE		0x03

#define DP_NAK_BAD_PARAM		0x04

#define DP_NAK_DEFER			0x05

#define DP_NAK_LINK_FAILURE		0x06

#define DP_NAK_NO_RESOURCES		0x07

#define DP_NAK_DPCD_FAIL		0x08

#define DP_NAK_I2C_NAK			0x09

#define DP_NAK_ALLOCATE_FAIL		0x0a



#define MODE_I2C_START	1

#define MODE_I2C_WRITE	2

#define MODE_I2C_READ	4