diff options
Diffstat (limited to 'include/drm/drm_dp_helper.h')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 92 |
1 files changed, 89 insertions, 3 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index b4f58914bf7d..a21568bf1514 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -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 @@ -291,9 +310,18 @@ # define DP_TEST_NAK (1 << 1) # define DP_TEST_EDID_CHECKSUM_WRITE (1 << 2) +#define DP_TEST_EDID_CHECKSUM 0x261 + #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 +331,21 @@ # 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 +362,43 @@ # 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 @@ -431,8 +511,10 @@ struct drm_dp_aux_msg { /** * struct drm_dp_aux - DisplayPort AUX channel + * @name: user-visible name of this AUX channel and the I2C-over-AUX adapter * @ddc: I2C adapter that can be used for I2C-over-AUX communication * @dev: pointer to struct device that is the parent for this AUX channel + * @hw_mutex: internal mutex used for locking transfers * @transfer: transfers a message representing a single AUX transaction * * The .dev field should be set to a pointer to the device that implements @@ -456,12 +538,16 @@ struct drm_dp_aux_msg { * transactions. The drm_dp_aux_register_i2c_bus() function registers an * I2C adapter that can be passed to drm_probe_ddc(). Upon removal, drivers * should call drm_dp_aux_unregister_i2c_bus() to remove the I2C adapter. + * + * Note that the aux helper code assumes that the .transfer() function + * only modifies the reply field of the drm_dp_aux_msg structure. The + * retry logic and i2c helpers assume this is the case. */ struct drm_dp_aux { const char *name; struct i2c_adapter ddc; struct device *dev; - + struct mutex hw_mutex; ssize_t (*transfer)(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg); }; @@ -520,7 +606,7 @@ int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_power_up(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link); -int drm_dp_aux_register_i2c_bus(struct drm_dp_aux *aux); -void drm_dp_aux_unregister_i2c_bus(struct drm_dp_aux *aux); +int drm_dp_aux_register(struct drm_dp_aux *aux); +void drm_dp_aux_unregister(struct drm_dp_aux *aux); #endif /* _DRM_DP_HELPER_H_ */ |