[Bug 93978] New: [APL] testdisplay returns fail and error when testing MIPI color depth

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93978

            Bug ID: 93978
           Summary: [APL] testdisplay returns fail and error when testing
                    MIPI color depth
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: christophe.prigent at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 121483
  --> https://bugs.freedesktop.org/attachment.cgi?id=121483&action=edit
dmesg

BXT-P : APL RVP 1A FAB1
BXT SOC : A0
Processor : Intel (R) Genuinen processor
CPU QDF QKG2

Software
BIOS : APLK_IFWI_X64_R_2016_02_4_00 (119.10)
KSC : 1.06
Kernel 4.4.0 from https://github.com/mkahola/drm-intel-mika

APL-BXT-CNL MIPI AUO Non touch Panel

Steps:
------
1. Execute command: testdisplay -d 18
2. Execute command: testdisplay -d 24

Actual result:
--------------
1. Test is fail, command returns:
(testdisplay:1019) WARNING: no hotplug support on this platform
(testdisplay:1019) igt-fb-CRITICAL: Test assertion failure function
igt_bpp_depth_to_drm_format, file igt_fb.c:1101:
(testdisplay:1019) igt-fb-CRITICAL: Failed assertion: 0
(testdisplay:1019) igt-fb-CRITICAL: can't find drm format with bpp=32, depth=18
Test (null) failed.
**** DEBUG ****
(testdisplay:1019) igt-core-DEBUG: Test requirement passed:
!igt_run_in_simulation()
(testdisplay:1019) INFO: using depth 18
(testdisplay:1019) drmtest-DEBUG: Test requirement passed: fd >= 0
(testdisplay:1019) igt-kms-DEBUG: VT: graphics mode set (mode was 0x0)
(testdisplay:1019) WARNING: no hotplug support on this platform
(testdisplay:1019) igt-fb-CRITICAL: Test assertion failure function
igt_bpp_depth_to_drm_format, file igt_fb.c:1101:
(testdisplay:1019) igt-fb-CRITICAL: Failed assertion: 0
(testdisplay:1019) igt-fb-CRITICAL: can't find drm format with bpp=32, depth=18
****  END  ****
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [igt_bpp_depth_to_drm_format+0x7a]
  #2 [update_display+0x225]
  #3 [main+0x6d0]
  #4 [__libc_start_main+0xf0]
  #5 [_start+0x29]
  #6 [<unknown>+0x29]
FAIL (-1.000s)

2. Test is Pass but screen indicates invalid

Expected results
-----------------
Tests are Pass

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