[igt-dev] [i-g-t 1/2] tests/kms_feature_discovery: Fix display subtest

[Sharma, Swati2]

Hi Bhanu,

With this change, test is passing on atsm
https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_10248/bat-atsm-1/igt@kms_feature_discovery@display.html


On 21-Nov-23 1:24 PM, Bhanuprakash Modem wrote:
> Instead of doing nothing, check the connected platform really
> supports the display or not.
> 
> Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
> ---
>   tests/kms_feature_discovery.c | 22 ++++++++++++++--------
>   1 file changed, 14 insertions(+), 8 deletions(-)
> 
> diff --git a/tests/kms_feature_discovery.c b/tests/kms_feature_discovery.c
> index 428f97ffe..81064aa0e 100644
> --- a/tests/kms_feature_discovery.c
> +++ b/tests/kms_feature_discovery.c
> @@ -30,8 +30,7 @@
>    *		anything else means we have a serious problem.
>    *
>    * SUBTEST: display
> - * Description: Make sure that we have display support with
> - * 		some outputs connected.
> + * Description: Make sure that we have display support.
>    * Driver requirement: i915, xe
>    * Functionality: feature_discovery
>    * Mega feature: General Display Features
> @@ -97,18 +96,25 @@ igt_main {
>   	igt_fixture {
>   		fd = drm_open_driver_master(DRIVER_ANY);
>   		debugfs_fd = igt_debugfs_dir(fd);
> +
> +		errno = 0;
>   	}
>   
>   	igt_subtest_group {
> -		igt_fixture {
> -			igt_display_require(&display, fd);
> -		}
> -
> -		igt_describe("Make sure that we have display support with some outputs connected.");
> +		igt_describe("Make sure that we have display support.");
>   		igt_subtest("display") {
> -			/* will skip because of the fixture */
> +			drmModeResPtr resources = drmModeGetResources(fd);
> +
> +			/* Operation not supported on non-display platforms. */
> +			if (!resources)
> +				igt_assert_eq(errno, EOPNOTSUPP);
> +
> +			drmModeFreeResources(resources);
>   		}
>   
> +		igt_fixture
> +			igt_display_require(&display, fd);
> +
>   		igt_subtest_group {
>   			volatile int output_count = 0;
>   			igt_output_t *output;