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path: root/drivers/gpu/drm/drm_dp_helper.c
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Diffstat (limited to 'drivers/gpu/drm/drm_dp_helper.c')
-rw-r--r--drivers/gpu/drm/drm_dp_helper.c71
1 files changed, 40 insertions, 31 deletions
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 19c99dddcb99..a3c82e726057 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -57,6 +57,7 @@ static u8 dp_get_lane_status(const u8 link_status[DP_LINK_STATUS_SIZE],
int i = DP_LANE0_1_STATUS + (lane >> 1);
int s = (lane & 1) * 4;
u8 l = dp_link_status(link_status, i);
+
return (l >> s) & 0xf;
}
@@ -257,7 +258,8 @@ static int drm_dp_dpcd_access(struct drm_dp_aux *aux, u8 request,
err = ret;
}
- DRM_DEBUG_KMS("Too many retries, giving up. First error: %d\n", err);
+ DRM_DEBUG_KMS("%s: Too many retries, giving up. First error: %d\n",
+ aux->name, err);
ret = err;
unlock:
@@ -376,43 +378,44 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux *aux,
if (drm_dp_dpcd_read(aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
&auto_test_req, 1) < 1) {
- DRM_ERROR("DPCD failed read at register 0x%x\n",
- DP_DEVICE_SERVICE_IRQ_VECTOR);
+ DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
return false;
}
auto_test_req &= DP_AUTOMATED_TEST_REQUEST;
if (drm_dp_dpcd_read(aux, DP_TEST_REQUEST, &link_edid_read, 1) < 1) {
- DRM_ERROR("DPCD failed read at register 0x%x\n",
- DP_TEST_REQUEST);
+ DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_TEST_REQUEST);
return false;
}
link_edid_read &= DP_TEST_LINK_EDID_READ;
if (!auto_test_req || !link_edid_read) {
- DRM_DEBUG_KMS("Source DUT does not support TEST_EDID_READ\n");
+ DRM_DEBUG_KMS("%s: Source DUT does not support TEST_EDID_READ\n",
+ aux->name);
return false;
}
if (drm_dp_dpcd_write(aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
&auto_test_req, 1) < 1) {
- DRM_ERROR("DPCD failed write at register 0x%x\n",
- DP_DEVICE_SERVICE_IRQ_VECTOR);
+ DRM_ERROR("%s: DPCD failed write at register 0x%x\n",
+ aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
return false;
}
/* send back checksum for the last edid extension block data */
if (drm_dp_dpcd_write(aux, DP_TEST_EDID_CHECKSUM,
&real_edid_checksum, 1) < 1) {
- DRM_ERROR("DPCD failed write at register 0x%x\n",
- DP_TEST_EDID_CHECKSUM);
+ DRM_ERROR("%s: DPCD failed write at register 0x%x\n",
+ aux->name, DP_TEST_EDID_CHECKSUM);
return false;
}
test_resp |= DP_TEST_EDID_CHECKSUM_WRITE;
if (drm_dp_dpcd_write(aux, DP_TEST_RESPONSE, &test_resp, 1) < 1) {
- DRM_ERROR("DPCD failed write at register 0x%x\n",
- DP_TEST_RESPONSE);
+ DRM_ERROR("%s: DPCD failed write at register 0x%x\n",
+ aux->name, DP_TEST_RESPONSE);
return false;
}
@@ -737,10 +740,11 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
* Avoid spamming the kernel log with timeout errors.
*/
if (ret == -ETIMEDOUT)
- DRM_DEBUG_KMS_RATELIMITED("transaction timed out\n");
+ DRM_DEBUG_KMS_RATELIMITED("%s: transaction timed out\n",
+ aux->name);
else
- DRM_DEBUG_KMS("transaction failed: %d\n", ret);
-
+ DRM_DEBUG_KMS("%s: transaction failed: %d\n",
+ aux->name, ret);
return ret;
}
@@ -754,11 +758,12 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
break;
case DP_AUX_NATIVE_REPLY_NACK:
- DRM_DEBUG_KMS("native nack (result=%d, size=%zu)\n", ret, msg->size);
+ DRM_DEBUG_KMS("%s: native nack (result=%d, size=%zu)\n",
+ aux->name, ret, msg->size);
return -EREMOTEIO;
case DP_AUX_NATIVE_REPLY_DEFER:
- DRM_DEBUG_KMS("native defer\n");
+ DRM_DEBUG_KMS("%s: native defer\n", aux->name);
/*
* We could check for I2C bit rate capabilities and if
* available adjust this interval. We could also be
@@ -772,7 +777,8 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
continue;
default:
- DRM_ERROR("invalid native reply %#04x\n", msg->reply);
+ DRM_ERROR("%s: invalid native reply %#04x\n",
+ aux->name, msg->reply);
return -EREMOTEIO;
}
@@ -787,13 +793,13 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
return ret;
case DP_AUX_I2C_REPLY_NACK:
- DRM_DEBUG_KMS("I2C nack (result=%d, size=%zu)\n",
- ret, msg->size);
+ DRM_DEBUG_KMS("%s: I2C nack (result=%d, size=%zu)\n",
+ aux->name, ret, msg->size);
aux->i2c_nack_count++;
return -EREMOTEIO;
case DP_AUX_I2C_REPLY_DEFER:
- DRM_DEBUG_KMS("I2C defer\n");
+ DRM_DEBUG_KMS("%s: I2C defer\n", aux->name);
/* DP Compliance Test 4.2.2.5 Requirement:
* Must have at least 7 retries for I2C defers on the
* transaction to pass this test
@@ -807,12 +813,13 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
continue;
default:
- DRM_ERROR("invalid I2C reply %#04x\n", msg->reply);
+ DRM_ERROR("%s: invalid I2C reply %#04x\n",
+ aux->name, msg->reply);
return -EREMOTEIO;
}
}
- DRM_DEBUG_KMS("too many retries, giving up\n");
+ DRM_DEBUG_KMS("%s: Too many retries, giving up\n", aux->name);
return -EREMOTEIO;
}
@@ -841,8 +848,8 @@ static int drm_dp_i2c_drain_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *o
return err == 0 ? -EPROTO : err;
if (err < msg.size && err < ret) {
- DRM_DEBUG_KMS("Partial I2C reply: requested %zu bytes got %d bytes\n",
- msg.size, err);
+ DRM_DEBUG_KMS("%s: Partial I2C reply: requested %zu bytes got %d bytes\n",
+ aux->name, msg.size, err);
ret = err;
}
@@ -1021,11 +1028,12 @@ static void drm_dp_aux_crc_work(struct work_struct *work)
}
if (ret == -EAGAIN) {
- DRM_DEBUG_KMS("Get CRC failed after retrying: %d\n",
- ret);
+ DRM_DEBUG_KMS("%s: Get CRC failed after retrying: %d\n",
+ aux->name, ret);
continue;
} else if (ret) {
- DRM_DEBUG_KMS("Failed to get a CRC: %d\n", ret);
+ DRM_DEBUG_KMS("%s: Failed to get a CRC: %d\n",
+ aux->name, ret);
continue;
}
@@ -1365,7 +1373,7 @@ EXPORT_SYMBOL(drm_dp_get_edid_quirks);
/**
* drm_dp_read_desc - read sink/branch descriptor from DPCD
* @aux: DisplayPort AUX channel
- * @desc: Device decriptor to fill from DPCD
+ * @desc: Device descriptor to fill from DPCD
* @is_branch: true for branch devices, false for sink devices
*
* Read DPCD 0x400 (sink) or 0x500 (branch) into @desc. Also debug log the
@@ -1388,8 +1396,8 @@ int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc,
dev_id_len = strnlen(ident->device_id, sizeof(ident->device_id));
- DRM_DEBUG_KMS("DP %s: OUI %*phD dev-ID %*pE HW-rev %d.%d SW-rev %d.%d quirks 0x%04x\n",
- is_branch ? "branch" : "sink",
+ DRM_DEBUG_KMS("%s: DP %s: OUI %*phD dev-ID %*pE HW-rev %d.%d SW-rev %d.%d quirks 0x%04x\n",
+ aux->name, is_branch ? "branch" : "sink",
(int)sizeof(ident->oui), ident->oui,
dev_id_len, ident->device_id,
ident->hw_rev >> 4, ident->hw_rev & 0xf,
@@ -1591,6 +1599,7 @@ EXPORT_SYMBOL(drm_dp_get_phy_test_pattern);
* drm_dp_set_phy_test_pattern() - set the pattern to the sink.
* @aux: DisplayPort AUX channel
* @data: DP phy compliance test parameters.
+ * @dp_rev: DP revision to use for compliance testing
*
* Returns 0 on success or a negative error code on failure.
*/
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-09 21:39:14 +0300