On Thu, 2018-04-12 at 14:52 +0200, Katarzyna Dec wrote:
> On Tue, Apr 10, 2018 at 07:37:30PM -0700, Dhinakaran Pandiyan wrote:
> > BDW+ have PSR interrupts from which the kernel can update exit and
> > pre-entry time stamps. Tests should prefer this over sink crc to
> > validate PSR.
> >
> > Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> > ---
> > tests/kms_psr_sink_crc.c | 13 +++++++++++++
> > 1 file changed, 13 insertions(+)
> >
> > diff --git a/tests/kms_psr_sink_crc.c b/tests/kms_psr_sink_crc.c
> > index 043b9e38..147b492f 100644
> > --- a/tests/kms_psr_sink_crc.c
> > +++ b/tests/kms_psr_sink_crc.c
> > @@ -75,6 +75,7 @@ typedef struct {
> > igt_output_t *output;
> > bool with_psr_disabled;
> > bool with_sink_crc;
> > + bool with_timestamps;
> > } data_t;
> >
> > static void create_cursor_fb(data_t *data)
> > @@ -200,6 +201,17 @@ static bool sink_support(data_t *data)
> > strstr(buf, "Sink_Support: yes\n");
> > }
> >
> > +static void timestamp_support(data_t *data)
> > +{
> > + char buf[512];
> > +
> > + igt_sysfs_set(data->debugfs_fd, "i915_edp_psr_debug", "1");
> > + igt_debugfs_read(data->drm_fd, "i915_edp_psr_status", buf);
> > + data->with_timestamps = strstr(buf, "Last exit at:");
> > + igt_debug("Time stamp support %d\n", data->with_timestamps);
> > + igt_sysfs_set(data->debugfs_fd, "i915_edp_psr_debug", "0");
> > +}
> > +
> Is this information about timestamp in debugs already in the kernel?
Thanks for the reviews. Not yet, the patches are on the list -
https://patchwork.freedesktop.org/series/41095/
Hoping someone will merge them :)
> Kasia
> > static bool psr_enabled(data_t *data)
> > {
> > char buf[512];
> > @@ -500,6 +512,7 @@ int main(int argc, char *argv[])
> > 0 : 1);
> > igt_require_f(sink_support(&data),
> > "Sink does not support PSR\n");
> > + timestamp_support(&data);
> >
> > data.bufmgr = drm_intel_bufmgr_gem_init(data.drm_fd, 4096);
> > igt_assert(data.bufmgr);
> > --
> > 2.14.1
> >
> > _______________________________________________
> > igt-dev mailing list
> > igt-dev@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/igt-dev
> _______________________________________________
> igt-dev mailing list
> igt-dev@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/igt-dev
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
