[PATCH v5 04/15] drm/msm/dpu: polish log for resource allocation

[Jun Nie]

It is more likely that resource allocation may fail in complex usage
case, such as quad-pipe case, than existing usage cases.
A resource type ID is printed on failure in the current implementation,
but the raw ID number is not explicit enough to help easily understand
which resource caused the failure, so add a table to match the type ID
to an human readable resource name and use it in the error print.

Signed-off-by: Jun Nie <jun.nie at linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index a67ad58acd99f..24e085437039e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -802,6 +802,21 @@ void dpu_rm_release_all_sspp(struct dpu_global_state *global_state,
 		ARRAY_SIZE(global_state->sspp_to_crtc_id), crtc_id);
 }
 
+static char *dpu_hw_blk_type_name[] = {
+	[DPU_HW_BLK_TOP] = "TOP",
+	[DPU_HW_BLK_SSPP] = "SSPP",
+	[DPU_HW_BLK_LM] = "LM",
+	[DPU_HW_BLK_CTL] = "CTL",
+	[DPU_HW_BLK_PINGPONG] = "pingpong",
+	[DPU_HW_BLK_INTF] = "INTF",
+	[DPU_HW_BLK_WB] = "WB",
+	[DPU_HW_BLK_DSPP] = "DSPP",
+	[DPU_HW_BLK_MERGE_3D] = "merge_3d",
+	[DPU_HW_BLK_DSC] = "DSC",
+	[DPU_HW_BLK_CDM] = "CDM",
+	[DPU_HW_BLK_MAX] = "unknown",
+};
+
 /**
  * dpu_rm_get_assigned_resources - Get hw resources of the given type that are
  *     assigned to this encoder
@@ -862,13 +877,13 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
 			continue;
 
 		if (num_blks == blks_size) {
-			DPU_ERROR("More than %d resources assigned to enc %d\n",
-				  blks_size, enc_id);
+			DPU_ERROR("More than %d %s assigned to enc %d\n",
+				  blks_size, dpu_hw_blk_type_name[type], enc_id);
 			break;
 		}
 		if (!hw_blks[i]) {
-			DPU_ERROR("Allocated resource %d unavailable to assign to enc %d\n",
-				  type, enc_id);
+			DPU_ERROR("%s unavailable to assign to enc %d\n",
+				  dpu_hw_blk_type_name[type], enc_id);
 			break;
 		}
 		blks[num_blks++] = hw_blks[i];

-- 
2.34.1