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dptx: Reduced the RX capability read to 16 bytes.

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No need to read and store unused capability information by the driver.

Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-01-07 12:07:51 -08:00 • committed by Nava kishore Manne
parent de578f8a0e
commit fff069f3e4
2 changed files with 13 additions and 16 deletions
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2
XilinxProcessorIPLib/drivers/dptx/src/xdptx.c
View file

@ -325,7 +325,7 @@ u32 XDptx_GetRxCapabilities(XDptx *InstancePtr)
} }
Status = XDptx_AuxRead(InstancePtr, XDPTX_DPCD_RECEIVER_CAP_FIELD_START, Status = XDptx_AuxRead(InstancePtr, XDPTX_DPCD_RECEIVER_CAP_FIELD_START,
XDPTX_DPCD_RECEIVER_CAP_FIELD_SIZE, Dpcd); 16, Dpcd);
if (Status != XST_SUCCESS) { if (Status != XST_SUCCESS) {
return XST_FAILURE; return XST_FAILURE;
} }

27
XilinxProcessorIPLib/drivers/dptx/src/xdptx.h
View file

@ -351,21 +351,18 @@ typedef struct {
* This typedef contains configuration information about the RX device. * This typedef contains configuration information about the RX device.
*/ */
typedef struct { typedef struct {
u8 DpcdRxCapsField[XDPTX_DPCD_RECEIVER_CAP_FIELD_SIZE]; u8 DpcdRxCapsField[16]; /**< The first 16 bytes of the raw capabilities
/**< The raw capabilities field field of the RX device's DisplayPort
of the RX device's DisplayPort Configuration Data (DPCD). */
Configuration Data (DPCD). */ u8 LaneStatusAdjReqs[6];/**< This is a raw read of the RX device's
u8 LaneStatusAdjReqs[6]; /**< This is a raw read of the status registers. The first 4 bytes
RX device's status registers. correspond to the lane status associated
The first 4 bytes correspond to with clock recovery, channel
the lane status associated with equalization, symbol lock, and interlane
clock recovery, channel alignment. The remaining 2 bytes
equalization, symbol lock, and represent the pre-emphasis and voltage
interlane alignment. The swing level adjustments requested by the
remaining 2 bytes represent the RX device. */
pre-emphasis and voltage swing
level adjustments requested by
the RX device. */
} XDptx_SinkConfig; } XDptx_SinkConfig;
/** /**