drm_dp_dpcd_readb
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## Name

drm_dp_dpcd_readb — read a single byte from the DPCD

## Synopsis

`ssize_t drm_dp_dpcd_readb (` | struct drm_dp_aux * aux,
| unsigned int offset,
| u8 * valuep`)`;

## Arguments

`aux`

  DisplayPort AUX channel

`offset`

  address of the register to read

`valuep`

  location where the value of the register will be stored

## Description

Returns the number of bytes transferred (1) on success, or a negative error code on failure.

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struct drm_dp_aux | Home | drm_dp_dpcd_writeb