This adds a flags field and a new flag, BARE_ADDRESS,
which drivers can use for special handling when they
want to set just the aux address. This is needed
to properly reset the connection between i2c transactions.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
include/drm/drm_dp_helper.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index b7488c9..a006e96 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -403,6 +403,8 @@ drm_dp_enhanced_frame_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
* DisplayPort AUX channel
*/
+#define DRM_DP_AUX_MSG_FLAGS_BARE_ADDRESS (1 << 0)
+
/**
* struct drm_dp_aux_msg - DisplayPort AUX channel transaction
* @address: address of the (first) register to access
@@ -417,6 +419,7 @@ struct drm_dp_aux_msg {
u8 reply;
void *buffer;
size_t size;
+ u32 flags;
};
/**
--
1.8.3.1
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