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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;
} }

25
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 u8 LaneStatusAdjReqs[6];/**< This is a raw read of the RX device's
RX device's status registers. status registers. The first 4 bytes
The first 4 bytes correspond to correspond to the lane status associated
the lane status associated with with clock recovery, channel
clock recovery, channel equalization, symbol lock, and interlane
equalization, symbol lock, and alignment. The remaining 2 bytes
interlane alignment. The represent the pre-emphasis and voltage
remaining 2 bytes represent the swing level adjustments requested by the
pre-emphasis and voltage swing RX device. */
level adjustments requested by
the RX device. */
} XDptx_SinkConfig; } XDptx_SinkConfig;
/** /**