On 1/5/2024 9:29 PM, Swati Sharma wrote:
> Add helper functions dsc with big joiner helper functions.
>
> Signed-off-by: Swati Sharma<swati2.sharma@intel.com>
> ---
>   tests/intel/kms_dsc_helper.c | 32 ++++++++++++++++++++++++++++++++
>   tests/intel/kms_dsc_helper.h |  3 +++
>   2 files changed, 35 insertions(+)
>
> diff --git a/tests/intel/kms_dsc_helper.c b/tests/intel/kms_dsc_helper.c
> index 58057aca3..91ce21062 100644
> --- a/tests/intel/kms_dsc_helper.c
> +++ b/tests/intel/kms_dsc_helper.c
> @@ -7,8 +7,10 @@
>   
>   static bool force_dsc_en_orig;
>   static bool force_dsc_fractional_bpp_en_orig;
> +static bool force_dsc_bigjoiner_en_orig;
>   static int force_dsc_restore_fd = -1;
>   static int force_dsc_fractional_bpp_restore_fd = -1;
> +static int force_dsc_bigjoiner_restore_fd = -1;
>   
>   void force_dsc_enable(int drmfd, igt_output_t *output)
>   {
> @@ -201,3 +203,33 @@ bool is_dsc_fractional_bpp_supported(int disp_ver, int drmfd, igt_output_t *outp
>   
>   	return true;
>   }
> +
> +void force_dsc_bigjoiner_enable(int drmfd, igt_output_t *output)
> +{
> +	int ret;
> +
> +	igt_debug("Forcing DSC Big Joiner on %s\n", output->name);
> +	ret = igt_force_bigjoiner_enable(drmfd, output->name);
> +	igt_assert_f(ret == 0, "forcing dsc big joiner debugfs_write failed\n");
> +}
> +
> +void save_force_dsc_bigjoiner_en(int drmfd, igt_output_t *output)
> +{
> +	force_dsc_bigjoiner_en_orig =
> +		igt_is_force_bigjoiner_enabled(drmfd, output->name);
> +	force_dsc_bigjoiner_restore_fd =
> +		igt_get_bigjoiner_debugfs_fd(drmfd, output->name);
> +	igt_assert(force_dsc_bigjoiner_restore_fd >= 0);
> +}
> +
> +void restore_force_dsc_bigjoiner_en(void)
> +{
> +	if (force_dsc_bigjoiner_restore_fd < 0)
> +		return;
> +
> +	igt_debug("Restoring DSC Big Joiner enable\n");
> +	igt_assert(write(force_dsc_bigjoiner_restore_fd, force_dsc_bigjoiner_en_orig ? "1" : "0", 1) == 1);
> +
> +	close(force_dsc_bigjoiner_restore_fd);
> +	force_dsc_bigjoiner_restore_fd = -1;
> +}


Hello Swati,

These functions (force_dsc_enable, save_force_dsc_bigjoiner_en and restore_force_dsc_bigjoiner_en) seems to be generic and not dsc specific.
Can this be somewhere where other IGT"s can use them?


Thanks and Regards
Kunal Joshi