[igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend: Skip crc assertion in coverage-vs-premult-vs-none for 6bpc panels

Thu Jul 8 14:21:26 UTC 2021

Hi Vidya,

Can you please address the comments in rev 14: https://patchwork.freedesktop.org/patch/443207/?series=90828&rev=14

Thanks,
Bhanu

> -----Original Message-----
> From: Srinivas, Vidya <vidya.srinivas at intel.com>
> Sent: Thursday, July 8, 2021 7:49 PM
> To: Shankar, Uma <uma.shankar at intel.com>; Modem, Bhanuprakash
> <bhanuprakash.modem at intel.com>; igt-dev at lists.freedesktop.org
> Subject: RE: [igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend: Skip crc
> assertion in coverage-vs-premult-vs-none for 6bpc panels
> 
> Hello Uma/Bhanu,
> 
> https://patchwork.freedesktop.org/patch/443212/?series=90828&rev=15 I have
> submitted the patch with adding DSI and skipping the test.
> Kindly check and approve if okay.
> 
> Regards
> Vidya
> 
> -----Original Message-----
> From: Srinivas, Vidya
> Sent: Thursday, July 8, 2021 7:44 PM
> To: Shankar, Uma <uma.shankar at intel.com>; Modem, Bhanuprakash
> <Bhanuprakash.Modem at intel.com>; igt-dev at lists.freedesktop.org
> Subject: RE: [igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend: Skip crc
> assertion in coverage-vs-premult-vs-none for 6bpc panels
> 
> Hello Uma,
> 
> Sure, I have already submitted skipping test itself
> https://patchwork.freedesktop.org/patch/443207/?series=90828&rev=14
> I will add DSI also the same and re-submit. Thank you so much.
> 
> Regards
> Vidya
> 
> -----Original Message-----
> From: Shankar, Uma <uma.shankar at intel.com>
> Sent: Thursday, July 8, 2021 7:05 PM
> To: Modem, Bhanuprakash <bhanuprakash.modem at intel.com>; Srinivas, Vidya
> <vidya.srinivas at intel.com>; igt-dev at lists.freedesktop.org
> Subject: RE: [igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend: Skip crc
> assertion in coverage-vs-premult-vs-none for 6bpc panels
> 
> 
> 
> > -----Original Message-----
> > From: Modem, Bhanuprakash <bhanuprakash.modem at intel.com>
> > Sent: Thursday, July 8, 2021 5:51 PM
> > To: Srinivas, Vidya <vidya.srinivas at intel.com>;
> > igt-dev at lists.freedesktop.org; Shankar, Uma <uma.shankar at intel.com>
> > Subject: RE: [igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend: Skip
> > crc assertion in coverage-vs-premult-vs-none for 6bpc panels
> >
> > > From: Srinivas, Vidya <vidya.srinivas at intel.com>
> > > Sent: Thursday, July 8, 2021 5:03 PM
> > > To: Modem, Bhanuprakash <bhanuprakash.modem at intel.com>; igt-
> > > dev at lists.freedesktop.org
> > > Subject: RE: [igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend:
> > > Skip crc assertion in coverage-vs-premult-vs-none for 6bpc panels
> > >
> > > Hello Bhanu,
> > >
> > > No we skip it for all 6bpc. We can skip the test, but as discussed
> > > with Uma, I just skip crc check, not the test.
> > > Kindly suggest further.
> >
> > If we remove/skip the crc check, I think there is no point in doing
> > further commits unless we have kernel checkers.
> >
> > Uma?
> 
> I think it's a compromise here,  skip on 6bpc would be ideal here or we need
> to have some passing criterion in order to declare this as pass.
> 
> We can do the bpc check after the first commit and skip there itself if we
> detect 6bpc.This should be better given the constraints. Also Vidya its good
> to add MIPI_DSI along with eDP as well since we have some 6bpc MIPI DSI panels
> as well.
> 
> > >
> > > Regards
> > > Vidya
> > >
> > > -----Original Message-----
> > > From: Modem, Bhanuprakash <bhanuprakash.modem at intel.com>
> > > Sent: Thursday, July 8, 2021 4:15 PM
> > > To: Srinivas, Vidya <vidya.srinivas at intel.com>;
> > > igt-dev at lists.freedesktop.org
> > > Subject: RE: [igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend:
> > > Skip crc assertion in coverage-vs-premult-vs-none for 6bpc panels
> > >
> > > > From: igt-dev <igt-dev-bounces at lists.freedesktop.org> On Behalf Of
> > > > Vidya Srinivas
> > > > Sent: Thursday, July 8, 2021 3:01 PM
> > > > To: igt-dev at lists.freedesktop.org
> > > > Subject: [igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend: Skip
> > > > crc assertion in coverage-vs-premult-vs-none for 6bpc panels
> > > >
> > > > Intel Gen11 platforms using 6bpc panels have dithering ON and show
> > > > CRC mismatch in coverage-vs-premult-vs-none Doing a crc based test
> > > > with dithering is not a great idea as pixels will change due to
> > > > the 8bit to 6bits truncation with dithering.
> > > >
> > > > This patch skips the CRC assertion for 6bpc panels. Currently,
> > > > there is no better way of fetching the bpc info other than EDID or
> > > > display_info. Currently using i915_display_info for the same.
> > > > Hence restricting the check to i915 devices only.
> > > >
> > > > Credits-to: Uma Shankar <uma.shankar at intel.com>
> > > > Credits-to: Juha-pekka Heikkila <juha-pekka.heikkila at intel.com>
> > > > Credits-to: Modem Bhanuprakash <Bhanuprakash.Modem at intel.com>
> > > > Reviewed-by: Uma Shankar <uma.shankar at intel.com>
> > > > Signed-off-by: Vidya Srinivas <vidya.srinivas at intel.com>
> > > > ---
> > > >  tests/kms_plane_alpha_blend.c | 43
> > > > +++++++++++++++++++++++++++++++++--
> > > >  1 file changed, 41 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/tests/kms_plane_alpha_blend.c
> > > > b/tests/kms_plane_alpha_blend.c index a37cb27c7d62..e450e64cb105
> > > > 100644
> > > > --- a/tests/kms_plane_alpha_blend.c
> > > > +++ b/tests/kms_plane_alpha_blend.c
> > > > @@ -442,10 +442,42 @@ static void coverage_7efc(data_t *data, enum
> > > > pipe pipe, igt_plane_t *plane)  igt_pipe_crc_stop(data->pipe_crc);
> > > >  }
> > > >
> > > > +static bool is_6bpc(igt_display_t *display, enum pipe pipe) {
> > > > +char buf[4096]; char *str; bool ret; int debugfs_fd;
> > > > +drmModeConnector *c; igt_output_t *output =
> > > > +igt_get_single_output_for_pipe(display,
> > > > +pipe);
> > > > +
> > > > +if (!is_i915_device(display->drm_fd))
> > > > +return false;
> > > > +
> > > > +c = output->config.connector;
> > > > +if (c->connector_type != DRM_MODE_CONNECTOR_eDP) return false;
> > > > +
> > > > +debugfs_fd = igt_debugfs_dir(display->drm_fd); if (debugfs_fd <
> > > > +0) return false;
> > > > +
> > > > +igt_debugfs_simple_read(debugfs_fd, "i915_display_info", buf,
> > > > sizeof(buf));
> > > > +
> > > > +str = strstr(buf, "bpp=");
> > > > +if (str && (strncmp(str, "bpp=18", 6) == 0)) ret = true; else ret
> > > > += false;
> > > > +
> > > > +close(debugfs_fd);
> > > > +return ret;
> > > > +}
> > > > +
> > > >  static void coverage_premult_constant(data_t *data, enum pipe
> > > > pipe, igt_plane_t *plane)  {  igt_display_t *display =
> > > > &data->display;  igt_crc_t ref_crc = {}, crc = {};
> > > > +bool is6bpc = false;
> > > >
> > > >  /* Set a background color on the primary fb for testing */  if
> > > > (plane->type != DRM_PLANE_TYPE_PRIMARY) @@ -461,14 +493,21 @@
> > > > static void coverage_premult_constant(data_t *data, enum pipe
> > > > pipe, igt_plane_t  igt_plane_set_fb(plane, &data->argb_fb_7e);
> > > > igt_display_commit2(display, COMMIT_ATOMIC);
> > > > igt_pipe_crc_get_current(display->drm_fd, data->pipe_crc, &crc);
> > > > -igt_assert_crc_equal(&ref_crc, &crc);
> > > > +
> > > > +/* 6bpc panels have dithering ON and CRC might fail, hence skip
> > > > +crc
> > > > check */
> > > > +is6bpc = is_6bpc(display, pipe);
> > > > +if (is6bpc == false)
> > > > +igt_assert_crc_equal(&ref_crc, &crc);
> > >
> > > We can SKIP here, right? Also no need to run on remaining planes.
> > > Otherwise IGT will report this test result as PASS instead of reporting as
> SKIP.
> > >
> > > igt_require_f(!is_6bpc(display, pipe), "Skip test on 6 bpc
> > > panels\n");
> > >
> > >
> > > Also, are we going to skip this test on only gen 11? Then we need a
> > > check to perform such.
> > >
> > > if (is_i915_device(fd) && intel_gen(intel_get_drm_devid(fd)) == 11)
> > > igt_require_f(!is_6bpc(display, pipe), "Skip test on 6 bpc
> > > panels\n");
> > >
> > > >
> > > >  igt_plane_set_prop_enum(plane, IGT_PLANE_PIXEL_BLEND_MODE,
> > "None");
> > > >  igt_plane_set_prop_value(plane, IGT_PLANE_ALPHA, 0x7e7e);
> > > > igt_plane_set_fb(plane, &data->argb_fb_cov_7e);
> > > > igt_display_commit2(display, COMMIT_ATOMIC);
> > > > igt_pipe_crc_get_current(display->drm_fd, data->pipe_crc, &crc);
> > > > -igt_assert_crc_equal(&ref_crc, &crc);
> > > > +
> > > > +/* 6bpc panels have dithering ON and CRC might fail, hence skip
> > > > +crc
> > > > check */
> > > > +if (is6bpc == false)
> > > > +igt_assert_crc_equal(&ref_crc, &crc);
> > > >
> > > >  igt_pipe_crc_stop(data->pipe_crc);
> > > >  }
> > > > --
> > > > 2.32.0
> > > >
> > > > _______________________________________________
> > > > igt-dev mailing list
> > > > igt-dev at lists.freedesktop.org
> > > > https://lists.freedesktop.org/mailman/listinfo/igt-dev
> 