This reverts commit cc195141133ac3e767d930bedd8294ceebf1f10b.
Signed-off-by: Harry Wentland <harry.wentl...@amd.com>
---
.../amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 9 ++++-----
drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 7 +++----
.../gpu/drm/amd/display/dc/i2caux/aux_engine.c | 15 +++++++++++++--
drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c | 1 -
drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h | 2 +-
5 files changed, 21 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index d43a65c6ced8..db669c427dab 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -83,21 +83,20 @@ static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux,
enum i2c_mot_mode mot = (msg->request & DP_AUX_I2C_MOT) ?
I2C_MOT_TRUE : I2C_MOT_FALSE;
enum ddc_result res;
- ssize_t read_bytes;
if (WARN_ON(msg->size > 16))
return -E2BIG;
switch (msg->request & ~DP_AUX_I2C_MOT) {
case DP_AUX_NATIVE_READ:
- read_bytes = dal_ddc_service_read_dpcd_data(
+ res = dal_ddc_service_read_dpcd_data(
TO_DM_AUX(aux)->ddc_service,
false,
I2C_MOT_UNDEF,
msg->address,
msg->buffer,
msg->size);
- return read_bytes;
+ break;
case DP_AUX_NATIVE_WRITE:
res = dal_ddc_service_write_dpcd_data(
TO_DM_AUX(aux)->ddc_service,
@@ -108,14 +107,14 @@ static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux,
msg->size);
break;
case DP_AUX_I2C_READ:
- read_bytes = dal_ddc_service_read_dpcd_data(
+ res = dal_ddc_service_read_dpcd_data(
TO_DM_AUX(aux)->ddc_service,
true,
mot,
msg->address,
msg->buffer,
msg->size);
- return read_bytes;
+ break;
case DP_AUX_I2C_WRITE:
res = dal_ddc_service_write_dpcd_data(
TO_DM_AUX(aux)->ddc_service,
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
index 49c2face1e7a..d5294798b0a5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
@@ -629,7 +629,7 @@ bool dal_ddc_service_query_ddc_data(
return ret;
}
-ssize_t dal_ddc_service_read_dpcd_data(
+enum ddc_result dal_ddc_service_read_dpcd_data(
struct ddc_service *ddc,
bool i2c,
enum i2c_mot_mode mot,
@@ -660,9 +660,8 @@ ssize_t dal_ddc_service_read_dpcd_data(
if (dal_i2caux_submit_aux_command(
ddc->ctx->i2caux,
ddc->ddc_pin,
- &command)) {
- return (ssize_t)command.payloads->length;
- }
+ &command))
+ return DDC_RESULT_SUCESSFULL;
return DDC_RESULT_FAILED_OPERATION;
}
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c
b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c
index 1d7309611978..0afd2fa57bbe 100644
--- a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c
@@ -128,8 +128,20 @@ static void process_read_reply(
ctx->status =
I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR;
ctx->operation_succeeded = false;
+ } else if (ctx->returned_byte < ctx->current_read_length) {
+ ctx->current_read_length -= ctx->returned_byte;
+
+ ctx->offset += ctx->returned_byte;
+
+ ++ctx->invalid_reply_retry_aux_on_ack;
+
+ if (ctx->invalid_reply_retry_aux_on_ack >
+ AUX_INVALID_REPLY_RETRY_COUNTER) {
+ ctx->status =
+ I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR;
+ ctx->operation_succeeded = false;
+ }
} else {
- ctx->current_read_length = ctx->returned_byte;
ctx->status = I2CAUX_TRANSACTION_STATUS_SUCCEEDED;
ctx->transaction_complete = true;
ctx->operation_succeeded = true;
@@ -290,7 +302,6 @@ static bool read_command(
ctx.operation_succeeded);
}
- request->payload.length = ctx.reply.length;
return ctx.operation_succeeded;
}
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c
b/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c
index 14dc8c94d862..9b0bcc6b769b 100644
--- a/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c
@@ -254,7 +254,6 @@ bool dal_i2caux_submit_aux_command(
break;
}
- cmd->payloads->length = request.payload.length;
++index_of_payload;
}
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
b/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
index 090b7a8dd67b..0bf73b742f1f 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
@@ -102,7 +102,7 @@ bool dal_ddc_service_query_ddc_data(
uint8_t *read_buf,
uint32_t read_size);
-ssize_t dal_ddc_service_read_dpcd_data(
+enum ddc_result dal_ddc_service_read_dpcd_data(
struct ddc_service *ddc,
bool i2c,
enum i2c_mot_mode mot,
--
2.17.1
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