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From:   Lyude Paul <lyude@redhat.com>
To:     dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
        nouveau@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
        =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= 
        <ville.syrjala@linux.intel.com>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Thierry Reding <thierry.reding@gmail.com>
Cc:     Robert Foss <robert.foss@linaro.org>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard <mripard@kernel.org>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v4 15/17] drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*()
Date:   Fri, 23 Apr 2021 14:43:07 -0400
Message-Id: <20210423184309.207645-16-lyude@redhat.com>
In-Reply-To: <20210423184309.207645-1-lyude@redhat.com>
References: <20210423184309.207645-1-lyude@redhat.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Now that we've added a back-pointer to drm_device to drm_dp_aux, made
drm_dp_aux available to any functions in drm_dp_helper.c which need to
print to the kernel log, and ensured all of our logging uses a consistent
format, let's do the final step of the conversion and actually move
everything over to using drm_err() and drm_dbg_*().

This was done by using the following cocci script:

  @@
  expression list expr;
  @@

  (
  - DRM_DEBUG_KMS(expr);
  + drm_dbg_kms(aux->drm_dev, expr);
  |
  - DRM_DEBUG_DP(expr);
  + drm_dbg_dp(aux->drm_dev, expr);
  |
  - DRM_DEBUG_ATOMIC(expr);
  + drm_dbg_atomic(aux->drm_dev, expr);
  |
  - DRM_DEBUG_KMS_RATELIMITED(expr);
  + drm_dbg_kms_ratelimited(aux->drm_dev, expr);
  |
  - DRM_ERROR(expr);
  + drm_err(aux->drm_dev, expr);
  )

Followed by correcting the resulting line-wrapping in the results by hand.

v2:
* Fix indenting in drm_dp_dump_access

Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
---
 drivers/gpu/drm/drm_dp_helper.c | 121 ++++++++++++++++----------------
 1 file changed, 59 insertions(+), 62 deletions(-)

diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index b50e572b544d..cb56d74e9d38 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -139,8 +139,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct drm_dp_aux *aux,
 					 DP_TRAINING_AUX_RD_MASK;
 
 	if (rd_interval > 4)
-		DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
-			      aux->name, rd_interval);
+		drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range (max 4)\n",
+			    aux->name, rd_interval);
 
 	if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
 		rd_interval = 100;
@@ -155,8 +155,8 @@ static void __drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
 						 unsigned long rd_interval)
 {
 	if (rd_interval > 4)
-		DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
-			      aux->name, rd_interval);
+		drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range (max 4)\n",
+			    aux->name, rd_interval);
 
 	if (rd_interval == 0)
 		rd_interval = 400;
@@ -220,11 +220,11 @@ drm_dp_dump_access(const struct drm_dp_aux *aux,
 	const char *arrow = request == DP_AUX_NATIVE_READ ? "->" : "<-";
 
 	if (ret > 0)
-		DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
-			     aux->name, offset, arrow, ret, min(ret, 20), buffer);
+		drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
+			   aux->name, offset, arrow, ret, min(ret, 20), buffer);
 	else
-		DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d)\n",
-			     aux->name, offset, arrow, ret);
+		drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d)\n",
+			   aux->name, offset, arrow, ret);
 }
 
 /**
@@ -287,8 +287,8 @@ static int drm_dp_dpcd_access(struct drm_dp_aux *aux, u8 request,
 			err = ret;
 	}
 
-	DRM_DEBUG_KMS("%s: Too many retries, giving up. First error: %d\n",
-		      aux->name, err);
+	drm_dbg_kms(aux->drm_dev, "%s: Too many retries, giving up. First error: %d\n",
+		    aux->name, err);
 	ret = err;
 
 unlock:
@@ -524,44 +524,44 @@ 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("%s: DPCD failed read at register 0x%x\n",
-			  aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
+		drm_err(aux->drm_dev, "%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("%s: DPCD failed read at register 0x%x\n",
-			  aux->name, DP_TEST_REQUEST);
+		drm_err(aux->drm_dev, "%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("%s: Source DUT does not support TEST_EDID_READ\n",
-			      aux->name);
+		drm_dbg_kms(aux->drm_dev, "%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("%s: DPCD failed write at register 0x%x\n",
-			  aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
+		drm_err(aux->drm_dev, "%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("%s: DPCD failed write at register 0x%x\n",
-			  aux->name, DP_TEST_EDID_CHECKSUM);
+		drm_err(aux->drm_dev, "%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("%s: DPCD failed write at register 0x%x\n",
-			  aux->name, DP_TEST_RESPONSE);
+		drm_err(aux->drm_dev, "%s: DPCD failed write at register 0x%x\n",
+			aux->name, DP_TEST_RESPONSE);
 		return false;
 	}
 
@@ -604,17 +604,16 @@ static int drm_dp_read_extended_dpcd_caps(struct drm_dp_aux *aux,
 		return -EIO;
 
 	if (dpcd[DP_DPCD_REV] > dpcd_ext[DP_DPCD_REV]) {
-		DRM_DEBUG_KMS("%s: Extended DPCD rev less than base DPCD rev (%d > %d)\n",
-			      aux->name, dpcd[DP_DPCD_REV],
-			      dpcd_ext[DP_DPCD_REV]);
+		drm_dbg_kms(aux->drm_dev,
+			    "%s: Extended DPCD rev less than base DPCD rev (%d > %d)\n",
+			    aux->name, dpcd[DP_DPCD_REV], dpcd_ext[DP_DPCD_REV]);
 		return 0;
 	}
 
 	if (!memcmp(dpcd, dpcd_ext, sizeof(dpcd_ext)))
 		return 0;
 
-	DRM_DEBUG_KMS("%s: Base DPCD: %*ph\n",
-		      aux->name, DP_RECEIVER_CAP_SIZE, dpcd);
+	drm_dbg_kms(aux->drm_dev, "%s: Base DPCD: %*ph\n", aux->name, DP_RECEIVER_CAP_SIZE, dpcd);
 
 	memcpy(dpcd, dpcd_ext, sizeof(dpcd_ext));
 
@@ -649,8 +648,7 @@ int drm_dp_read_dpcd_caps(struct drm_dp_aux *aux,
 	if (ret < 0)
 		return ret;
 
-	DRM_DEBUG_KMS("%s: DPCD: %*ph\n",
-		      aux->name, DP_RECEIVER_CAP_SIZE, dpcd);
+	drm_dbg_kms(aux->drm_dev, "%s: DPCD: %*ph\n", aux->name, DP_RECEIVER_CAP_SIZE, dpcd);
 
 	return ret;
 }
@@ -694,8 +692,7 @@ int drm_dp_read_downstream_info(struct drm_dp_aux *aux,
 	if (ret != len)
 		return -EIO;
 
-	DRM_DEBUG_KMS("%s: DPCD DFP: %*ph\n",
-		      aux->name, len, downstream_ports);
+	drm_dbg_kms(aux->drm_dev, "%s: DPCD DFP: %*ph\n", aux->name, len, downstream_ports);
 
 	return 0;
 }
@@ -1412,11 +1409,11 @@ 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("%s: transaction timed out\n",
-							  aux->name);
+				drm_dbg_kms_ratelimited(aux->drm_dev, "%s: transaction timed out\n",
+							aux->name);
 			else
-				DRM_DEBUG_KMS("%s: transaction failed: %d\n",
-					      aux->name, ret);
+				drm_dbg_kms(aux->drm_dev, "%s: transaction failed: %d\n",
+					    aux->name, ret);
 			return ret;
 		}
 
@@ -1430,12 +1427,12 @@ 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("%s: native nack (result=%d, size=%zu)\n",
-				      aux->name, ret, msg->size);
+			drm_dbg_kms(aux->drm_dev, "%s: native nack (result=%d, size=%zu)\n",
+				    aux->name, ret, msg->size);
 			return -EREMOTEIO;
 
 		case DP_AUX_NATIVE_REPLY_DEFER:
-			DRM_DEBUG_KMS("%s: native defer\n", aux->name);
+			drm_dbg_kms(aux->drm_dev, "%s: native defer\n", aux->name);
 			/*
 			 * We could check for I2C bit rate capabilities and if
 			 * available adjust this interval. We could also be
@@ -1449,8 +1446,8 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
 			continue;
 
 		default:
-			DRM_ERROR("%s: invalid native reply %#04x\n",
-				  aux->name, msg->reply);
+			drm_err(aux->drm_dev, "%s: invalid native reply %#04x\n",
+				aux->name, msg->reply);
 			return -EREMOTEIO;
 		}
 
@@ -1465,13 +1462,13 @@ 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("%s: I2C nack (result=%d, size=%zu)\n",
-				      aux->name, ret, msg->size);
+			drm_dbg_kms(aux->drm_dev, "%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("%s: I2C defer\n", aux->name);
+			drm_dbg_kms(aux->drm_dev, "%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
@@ -1485,13 +1482,13 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
 			continue;
 
 		default:
-			DRM_ERROR("%s: invalid I2C reply %#04x\n",
-				  aux->name, msg->reply);
+			drm_err(aux->drm_dev, "%s: invalid I2C reply %#04x\n",
+				aux->name, msg->reply);
 			return -EREMOTEIO;
 		}
 	}
 
-	DRM_DEBUG_KMS("%s: Too many retries, giving up\n", aux->name);
+	drm_dbg_kms(aux->drm_dev, "%s: Too many retries, giving up\n", aux->name);
 	return -EREMOTEIO;
 }
 
@@ -1520,8 +1517,9 @@ 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("%s: Partial I2C reply: requested %zu bytes got %d bytes\n",
-				      aux->name, msg.size, err);
+			drm_dbg_kms(aux->drm_dev,
+				    "%s: Partial I2C reply: requested %zu bytes got %d bytes\n",
+				    aux->name, msg.size, err);
 			ret = err;
 		}
 
@@ -1700,12 +1698,11 @@ static void drm_dp_aux_crc_work(struct work_struct *work)
 		}
 
 		if (ret == -EAGAIN) {
-			DRM_DEBUG_KMS("%s: Get CRC failed after retrying: %d\n",
-				      aux->name, ret);
+			drm_dbg_kms(aux->drm_dev, "%s: Get CRC failed after retrying: %d\n",
+				    aux->name, ret);
 			continue;
 		} else if (ret) {
-			DRM_DEBUG_KMS("%s: Failed to get a CRC: %d\n",
-				      aux->name, ret);
+			drm_dbg_kms(aux->drm_dev, "%s: Failed to get a CRC: %d\n", aux->name, ret);
 			continue;
 		}
 
@@ -2009,13 +2006,12 @@ 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("%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,
-		      ident->sw_major_rev, ident->sw_minor_rev,
-		      desc->quirks);
+	drm_dbg_kms(aux->drm_dev,
+		    "%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,
+		    ident->sw_major_rev, ident->sw_minor_rev, desc->quirks);
 
 	return 0;
 }
@@ -2781,7 +2777,8 @@ int drm_dp_pcon_frl_enable(struct drm_dp_aux *aux)
 	if (ret < 0)
 		return ret;
 	if (!(buf & DP_PCON_ENABLE_SOURCE_CTL_MODE)) {
-		DRM_DEBUG_KMS("%s: PCON in Autonomous mode, can't enable FRL\n", aux->name);
+		drm_dbg_kms(aux->drm_dev, "%s: PCON in Autonomous mode, can't enable FRL\n",
+			    aux->name);
 		return -EINVAL;
 	}
 	buf |= DP_PCON_ENABLE_HDMI_LINK;
@@ -2876,8 +2873,8 @@ void drm_dp_pcon_hdmi_frl_link_error_count(struct drm_dp_aux *aux,
 			num_error = 0;
 		}
 
-		DRM_ERROR("%s: More than %d errors since the last read for lane %d",
-			  aux->name, num_error, i);
+		drm_err(aux->drm_dev, "%s: More than %d errors since the last read for lane %d",
+			aux->name, num_error, i);
 	}
 }
 EXPORT_SYMBOL(drm_dp_pcon_hdmi_frl_link_error_count);
-- 
2.30.2