On 2022-06-07 11:34, Leo wrote:


On 2022-06-07 05:40, Chandan Vurdigere Nataraj wrote:
[Why]
Getting below errors:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:1414:5:
 error: implicit conversion from enumeration type 'enum scan_direction_class' 
to different enumeration type 'enum dm_rotation_angle' 
[-Werror,-Wenum-conversion]
                                 mode_lib->vba.SourceScan[k],
                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:1744:22:
 error: implicit conversion from enumeration type 'enum scan_direction_class' 
to different enumeration type 'enum dm_rotation_angle' 
[-Werror,-Wenum-conversion]
                         && (!(!IsVertical(mode_lib->vba.SourceScan[k])) || 
mode_lib->vba.DCCEnable[k] == true)) {
                                ~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~
2 errors generated.

drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_util_32.c:5484:18:
 error: implicit conversion from enumeration type 'RequestType' to different 
enumeration type 'enum RequestType' [-Werror,-Wenum-conversion]
                         RequestLuma = REQ_256Bytes;
                                     ~ ^~~~~~~~~~~~
18 errors of similar kind

[How]
1. Add typecast at relevant places
2. Move the enum RequestType definition ahead of declarations

Signed-off-by: Chandan Vurdigere Nataraj <[email protected]>

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c 
b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index b77a1ae792d1..5828e60f291d 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -1411,7 +1411,7 @@ static void 
DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
                                v->BytePerPixelC[k],
                                v->BytePerPixelDETY[k],
                                v->BytePerPixelDETC[k],
-                               mode_lib->vba.SourceScan[k],
+                               (enum dm_rotation_angle) 
mode_lib->vba.SourceScan[k],

Hi Jay,

This seems fishy, dm_rotation_angle and scan_dirrection_class are very 
different enums.
Comparing dml32_CalculateDCCConfiguration() with CalculateDCCConfiguration(), 
it seems dm_rotation_angle is new for DCN32. Is passing vba.SourceScan correct 
here?

I agree. It should be typecast to scan_direction_class

One more comment below.

                                /* Output */
                                &v->DCCYMaxUncompressedBlock[k],
                                &v->DCCCMaxUncompressedBlock[k],
@@ -1741,7 +1741,8 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct 
display_mode_lib *mode_l
        mode_lib->vba.SourceFormatPixelAndScanSupport = true;
        for (k = 0; k <= mode_lib->vba.NumberOfActiveSurfaces - 1; k++) {
                if (mode_lib->vba.SurfaceTiling[k] == dm_sw_linear
-                       && (!(!IsVertical(mode_lib->vba.SourceScan[k])) || 
mode_lib->vba.DCCEnable[k] == true)) {
+                       && (!(!IsVertical((enum dm_rotation_angle) 
mode_lib->vba.SourceScan[k]))
+                               || mode_lib->vba.DCCEnable[k] == true)) {
                        mode_lib->vba.SourceFormatPixelAndScanSupport = false;
                }
        }
diff --git 
a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c 
b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
index 6509a84eeb64..07f3a85f8edf 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
@@ -5314,9 +5314,15 @@ void dml32_CalculateDCCConfiguration(
                unsigned int        *IndependentBlockLuma,
                unsigned int        *IndependentBlockChroma)
  {
+       typedef enum {
+               REQ_256Bytes,
+               REQ_128BytesNonContiguous,
+               REQ_128BytesContiguous,
+               REQ_NA
+       } RequestType;
- enum RequestType RequestLuma;
-       enum RequestType   RequestChroma;
+       RequestType   RequestLuma;
+       RequestType   RequestChroma;

This might need a wider cleanup, enum RequestType is defined in 
display_mode_enums.h and is already included in all the display_mode_vba*.c 
files I've come across. Unless I'm missing something, we shouldn't need to 
redefine RequestType.

That said, there doesn't seem to be any functional change, and it fixes a build 
error. So

I'm unable to repro this error. Are you using clang? If so, which version ?

Acked-by: Leo Li <[email protected]>

Thanks,
Leo

unsigned int segment_order_horz_contiguous_luma;
        unsigned int   segment_order_horz_contiguous_chroma;
@@ -5350,13 +5356,6 @@ void dml32_CalculateDCCConfiguration(
        double   detile_buf_vp_horz_limit;
        double   detile_buf_vp_vert_limit;
- typedef enum {
-               REQ_256Bytes,
-               REQ_128BytesNonContiguous,
-               REQ_128BytesContiguous,
-               REQ_NA
-       } RequestType;
-
        yuv420 = ((SourcePixelFormat == dm_420_8 || SourcePixelFormat == 
dm_420_10 ||
                        SourcePixelFormat == dm_420_12) ? 1 : 0);
        horz_div_l = 1;
@@ -5527,11 +5526,11 @@ void dml32_CalculateDCCConfiguration(
                        RequestChroma = REQ_128BytesContiguous;
        }
- if (RequestLuma == (enum RequestType) REQ_256Bytes) {
+       if (RequestLuma == REQ_256Bytes) {
                *MaxUncompressedBlockLuma = 256;
                *MaxCompressedBlockLuma = 256;
                *IndependentBlockLuma = 0;
-       } else if (RequestLuma == (enum RequestType) REQ_128BytesContiguous) {
+       } else if (RequestLuma == REQ_128BytesContiguous) {
                *MaxUncompressedBlockLuma = 256;
                *MaxCompressedBlockLuma = 128;
                *IndependentBlockLuma = 128;
@@ -5541,11 +5540,11 @@ void dml32_CalculateDCCConfiguration(
                *IndependentBlockLuma = 64;
        }
- if (RequestChroma == (enum RequestType) REQ_256Bytes) {
+       if (RequestChroma == REQ_256Bytes) {
                *MaxUncompressedBlockChroma = 256;
                *MaxCompressedBlockChroma = 256;
                *IndependentBlockChroma = 0;
-       } else if (RequestChroma == (enum RequestType) REQ_128BytesContiguous) {
+       } else if (RequestChroma == REQ_128BytesContiguous) {
                *MaxUncompressedBlockChroma = 256;
                *MaxCompressedBlockChroma = 128;
                *IndependentBlockChroma = 128;

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