[PATCH i-g-t 3/4] tests/intel/kms_big_joiner: revamp kms_big_joiner

Modem, Bhanuprakash bhanuprakash.modem at intel.com
Tue Mar 5 11:44:27 UTC 2024


Hi Kunal,

On 03-03-2024 10:52 pm, Kunal Joshi wrote:
> big joiner outputs are statically assigned to pipe,
> assign dynamically also add support for forcing
> joiner, support for forcing joiner was introduced with
> below kmd patch
> 
> drm/i915: Add bigjoiner force enable option to debugfs
> 
> Cc: Karthik B S <karthik.b.s at intel.com>
> Cc: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
> Signed-off-by: Kunal Joshi <kunal1.joshi at intel.com>
> ---
>   tests/intel/kms_big_joiner.c | 494 +++++++++++++++++++----------------
>   1 file changed, 270 insertions(+), 224 deletions(-)
> 
> diff --git a/tests/intel/kms_big_joiner.c b/tests/intel/kms_big_joiner.c
> index 28678b958..a4f6b8782 100644
> --- a/tests/intel/kms_big_joiner.c
> +++ b/tests/intel/kms_big_joiner.c
> @@ -1,27 +1,6 @@
> +/* SPDX-License-Identifier: MIT */
>   /*
> - * Copyright © 2020 Intel Corporation
> - *
> - * Permission is hereby granted, free of charge, to any person obtaining a
> - * copy of this software and associated documentation files (the "Software"),
> - * to deal in the Software without restriction, including without limitation
> - * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> - * and/or sell copies of the Software, and to permit persons to whom the
> - * Software is furnished to do so, subject to the following conditions:
> - *
> - * The above copyright notice and this permission notice (including the next
> - * paragraph) shall be included in all copies or substantial portions of the
> - * Software.
> - *
> - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> - * IN THE SOFTWARE.
> - *
> - * Author:
> - *  Karthik B S <karthik.b.s at intel.com>
> + * Copyright © 2024 Intel Corporation

I think, we don't need to touch the license part.

@kmail JFYI

>    */
>   
>   /**
> @@ -37,22 +16,36 @@
>   #include "igt.h"
>   
>   /**
> - * SUBTEST: invalid-modeset
> - * Description: Verify if the modeset on the adjoining pipe is rejected when
> - *              the pipe is active with a big joiner modeset
> - *
>    * SUBTEST: basic
>    * Description: Verify the basic modeset on big joiner mode on all pipes
>    *
> - * SUBTEST: 2x-modeset
> - * Description: Verify simultaneous modeset on 2 big joiner outputs
> + * SUBTEST: force-joiner-basic
> + * Description: Verify the basic modeset on force joiner mode on all pipes
> + *
> + * SUBTEST: invalid-modeset
> + * Description: Verify the invalid modeset on big joiner mode on all pipes
> + *
> + * SUBTEST: force-joiner-invalid-modeset
> + * Description: Verify the invalid modeset on force joiner mode on all pipes
>    */
> +IGT_TEST_DESCRIPTION("Test big joiner / force joiner");
>   
> -IGT_TEST_DESCRIPTION("Test big joiner");
> +#define MAX_OUTPUTS 256
> +#define MAX_COMBINATIONS 1000
> +#define INVALID_TEST_OUTPUT 2
> +typedef struct {
> +    int combination[MAX_OUTPUTS];
> +} Combination;
>   
> -struct bigjoiner_output {
> -	uint32_t output_id;
> -	drmModeModeInfo mode;
> +enum tests {
> +	BASIC,
> +	INVALID_MODESET,
> +	INVALID,
> +};
> +
> +enum joiner_type {
> +	BIG_JOINER = 1 << 1,
> +	INVALID_JOINER = -1,
>   };
>   
>   typedef struct {
> @@ -60,273 +53,326 @@ typedef struct {
>   	igt_display_t display;
>   	struct igt_fb fb;
>   	int n_pipes;
> -	enum pipe pipe1;
> -	enum pipe pipe2;
> -	struct bigjoiner_output output[2];
> +	uint64_t big_joiner_outputs[IGT_MAX_PIPES];
> +	uint64_t non_big_joiner_outputs[IGT_MAX_PIPES];
> +	uint64_t combined_outputs[IGT_MAX_PIPES];
> +	int big_joiner_output_count;
> +	int non_big_joiner_output_count;
> +	int combined_output_count;
> +	int output_count;
> +	enum pipe pipe_seq[IGT_MAX_PIPES];
>   } data_t;
>   
>   static int max_dotclock;
>   
> -static void test_invalid_modeset(data_t *data)
> +static bool output_supports_force_joiner(igt_output_t *output)
>   {
> -	igt_output_t *output;
> -	igt_display_t *display = &data->display;
> -	int ret;
> +	return output->config.connector->connector_type ==
> +	       DRM_MODE_CONNECTOR_DisplayPort ||
> +	       output->config.connector->connector_type ==
> +	       DRM_MODE_CONNECTOR_eDP;
> +}

I think, this is not a source of truth. Perhaps, you can just check if 
debugfs is present or not.

>   
> -	igt_info("Bigjoiner test on ");
> -	for_each_connected_output(display, output){
> -		enum pipe p = output->pending_pipe;
> -		drmModeModeInfo *mode;
> -		igt_pipe_t *pipe;
> -		igt_plane_t *plane;
> +static void generate_combinations(int output_count, int pipe_count,
> +				  int pipes_per_output,
> +				  Combination combinations[MAX_COMBINATIONS],
> +				  uint64_t *num_combinations)

If possible, can you please add some documentation? I am not able to 
understand this logic.

> +{
> +	int i, index;
> +	int current_combination[MAX_OUTPUTS];
>   
> -		if (p == PIPE_NONE)
> -			continue;
> +	for (i = 0; i < output_count; ++i)
> +		current_combination[i] = i * pipes_per_output;
>   
> -		mode = igt_output_get_mode(output);
> -		igt_info("pipe:%s, output:%s, mode:", kmstest_pipe_name(p), igt_output_name(output));
> -		kmstest_dump_mode(mode);
> +	while (current_combination[0] <= pipe_count - output_count * pipes_per_output) {
> +		for (i = 0; i < output_count; ++i)
> +			combinations[*num_combinations].combination[i] = current_combination[i];
>   
> -		pipe = &display->pipes[p];
> -		plane = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
> +		(*num_combinations)++;
>   
> -		igt_plane_set_fb(plane, &data->fb);
> -		igt_fb_set_size(&data->fb, plane, mode->hdisplay, mode->vdisplay);
> -		igt_plane_set_size(plane, mode->hdisplay, mode->vdisplay);
> -	}
> +		index = output_count - 1;
> +		while (index >= 0 && current_combination[index] == pipe_count - (output_count - index) * pipes_per_output)
> +			index--;
>   
> -	igt_assert(!igt_check_bigjoiner_support(display));
> +		if (index < 0)
> +			break;
>   
> -	/* This commit is expectd to fail as this pipe is being used for big joiner */
> -	ret = igt_display_try_commit_atomic(display, DRM_MODE_ATOMIC_TEST_ONLY |
> -					    DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
> +		current_combination[index]++;
> +		for (i = index + 1; i < output_count; ++i)
> +			current_combination[i] = current_combination[i - 1] + pipes_per_output;
> +    }
> +}
>   
> -	igt_display_reset(&data->display);
> -	igt_display_commit2(display, COMMIT_ATOMIC);
> +static igt_output_t *get_output_by_id(data_t *data, uint64_t output_id)
> +{
> +	igt_output_t *output;
>   
> -	igt_assert_lt(ret, 0);
> +	for_each_connected_output(&data->display, output) {
> +		if (output->id == output_id)
> +			return output;
> +	}
> +	igt_assert("Output not found\n");

igt_assert without condition?

> +	return NULL;
>   }
>   
> -static void test_basic_modeset(data_t *data)
> +static void test_invalid_modeset_two_joiner(data_t *data, bool force_joiner,
> +					    bool combined)
>   {
> +	int i, j, ret;
> +	igt_output_t *output;
> +	uint64_t *outputs;
> +	igt_plane_t *primary[INVALID_TEST_OUTPUT];
> +	igt_fb_t fb[INVALID_TEST_OUTPUT];
>   	drmModeModeInfo *mode;
> -	igt_output_t *output, *bigjoiner_output = NULL;
> -	igt_display_t *display = &data->display;
> -	igt_pipe_t *pipe;
> -	igt_plane_t *plane;
> -
> -	igt_display_reset(display);
>   
> -	for_each_connected_output(display, output) {
> -		if (data->output[0].output_id == output->id) {
> -			bigjoiner_output = output;
> -			break;
> +	outputs = force_joiner ? data->non_big_joiner_outputs :
> +		  combined ? data->combined_outputs : data->big_joiner_outputs;
> +
> +	for (i = 0; i < data->n_pipes-1; i++) {
> +		igt_display_reset(&data->display);
> +		for (j = 0; j < INVALID_TEST_OUTPUT; j++) {
> +			output = get_output_by_id(data, outputs[j]);
> +			igt_assert(output);
> +			if (force_joiner) {
> +				igt_force_bigjoiner_enable(data->drm_fd, output->name, true);
> +				igt_assert(igt_check_force_bigjoiner_status(data->drm_fd, output->name) == 1);
> +			}
> +			igt_output_set_pipe(output, data->pipe_seq[i + j]);
> +			mode = igt_output_get_mode(output);
> +			igt_info(" Assigning pipe %s to %s with mode %dx%d@%d%s",
> +				 kmstest_pipe_name(data->pipe_seq[i + j]),
> +				 igt_output_name(output), mode->hdisplay,
> +				 mode->vdisplay, mode->vrefresh,
> +				 j == INVALID_TEST_OUTPUT - 1 ? "\n" : ", ");
> +			primary[j] = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
> +			igt_create_pattern_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, DRM_FORMAT_XRGB8888,
> +								  DRM_FORMAT_MOD_LINEAR, &fb[j]);
> +			igt_plane_set_fb(primary[j], &fb[j]);
> +		}
> +		ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
> +		igt_assert_f(ret != 0, "Commit shouldn't have passed\n");
> +		if (force_joiner) {
> +			for (j = 0; j < INVALID_TEST_OUTPUT; j++) {
> +				output = get_output_by_id(data, outputs[j]);
> +				igt_assert(output);
> +				igt_force_bigjoiner_enable(data->drm_fd, output->name, false);
> +				igt_assert(igt_check_force_bigjoiner_status(data->drm_fd, output->name) == 0);
> +			}
>   		}
>   	}
> -
> -	igt_output_set_pipe(bigjoiner_output, data->pipe1);
> -
> -	mode = &data->output[0].mode;
> -	igt_output_override_mode(bigjoiner_output, mode);
> -
> -	pipe = &display->pipes[data->pipe1];
> -	plane = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
> -
> -	igt_plane_set_fb(plane, &data->fb);
> -	igt_fb_set_size(&data->fb, plane, mode->hdisplay, mode->vdisplay);
> -	igt_plane_set_size(plane, mode->hdisplay, mode->vdisplay);
> -
> -	igt_display_commit2(display, COMMIT_ATOMIC);
> -
> -	igt_output_set_pipe(bigjoiner_output, PIPE_NONE);
> -	igt_plane_set_fb(plane, NULL);
> -	igt_display_commit2(display, COMMIT_ATOMIC);
>   }
>   
> -static void test_dual_display(data_t *data)
> +static void tets_big_joiner_on_last_pipe(data_t *data, bool force_joiner)
>   {
> +	int i, len, ret;
> +	uint64_t *outputs;
> +	igt_output_t *output;
> +	igt_plane_t *primary;
> +	igt_fb_t fb;
>   	drmModeModeInfo *mode;
> -	igt_output_t *output, *bigjoiner_output[2];
> -	igt_display_t *display = &data->display;
> -	igt_pipe_t *pipe;
> -	igt_plane_t *plane1, *plane2;
> -	int count = 0;
>   
> -	igt_display_reset(display);
> +	len = force_joiner ? data->non_big_joiner_output_count : data->big_joiner_output_count;
> +	outputs = force_joiner ? data->non_big_joiner_outputs : data->big_joiner_outputs;
>   
> -	for_each_connected_output(display, output) {
> -		if (data->output[count].output_id == output->id) {
> -			bigjoiner_output[count] = output;
> -			count++;
> +	for (i = 0; i < len; i++) {
> +		igt_display_reset(&data->display);
> +		output = get_output_by_id(data, outputs[i]);
> +		if (force_joiner) {
> +			igt_force_bigjoiner_enable(data->drm_fd, output->name, true);
> +			igt_assert(igt_check_force_bigjoiner_status(data->drm_fd, output->name) == 1);
>   		}
> -
> -		if (count > 1)
> -			break;
> +		igt_output_set_pipe(output, data->pipe_seq[data->n_pipes - 1]);
> +		mode = igt_output_get_mode(output);
> +		igt_info(" Assigning pipe %s to %s with mode %dx%d@%d\n",
> +				 kmstest_pipe_name(data->pipe_seq[data->n_pipes - 1]),
> +				 igt_output_name(output), mode->hdisplay,
> +				 mode->vdisplay, mode->vrefresh);
> +		primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
> +		igt_create_pattern_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, DRM_FORMAT_XRGB8888,
> +							  DRM_FORMAT_MOD_LINEAR, &fb);
> +		igt_plane_set_fb(primary, &fb);
> +		ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
> +		igt_assert_f(ret != 0, "Commit shouldn't have passed\n");
>   	}
> +	if (force_joiner) {
> +		for (i = 0; i < len; i++) {
> +			output = get_output_by_id(data, outputs[i]);
> +			igt_force_bigjoiner_enable(data->drm_fd, output->name, false);
> +		}
> +	}
> +}
>   
> -	igt_output_set_pipe(bigjoiner_output[0], data->pipe1);
> -	igt_output_set_pipe(bigjoiner_output[1], data->pipe2);
> -
> -	/* Set up first big joiner output on Pipe A*/
> -	mode = &data->output[0].mode;
> -	igt_output_override_mode(bigjoiner_output[0], mode);
> -
> -	pipe = &display->pipes[data->pipe1];
> -	plane1 = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
> -
> -	igt_plane_set_fb(plane1, &data->fb);
> -	igt_fb_set_size(&data->fb, plane1, mode->hdisplay, mode->vdisplay);
> -	igt_plane_set_size(plane1, mode->hdisplay, mode->vdisplay);
> -
> -	/* Set up second big joiner output on Pipe C*/
> -	mode = &data->output[1].mode;
> -	igt_output_override_mode(bigjoiner_output[1], mode);
> -
> -	pipe = &display->pipes[data->pipe2];
> -	plane2 = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
> -
> -	igt_plane_set_fb(plane2, &data->fb);
> -	igt_fb_set_size(&data->fb, plane2, mode->hdisplay, mode->vdisplay);
> -	igt_plane_set_size(plane2, mode->hdisplay, mode->vdisplay);
> -
> -	igt_display_commit2(display, COMMIT_ATOMIC);
> +static void test_basic_modeset(data_t *data, int num_outputs,
> +			       Combination combinations[MAX_COMBINATIONS],
> +			       uint64_t num_combinations, bool force_joiner)
> +{
> +	int i, j, ret;
> +	igt_display_t *display = &data->display;
> +	igt_output_t *output[num_outputs];
> +	igt_plane_t *primary[num_outputs];
> +	igt_fb_t fb[num_outputs];
> +	drmModeModeInfo *mode;
>   
> -	/* Clean up */
> -	igt_output_set_pipe(bigjoiner_output[0], PIPE_NONE);
> -	igt_output_set_pipe(bigjoiner_output[1], PIPE_NONE);
> -	igt_plane_set_fb(plane1, NULL);
> -	igt_plane_set_fb(plane2, NULL);
> -	igt_display_commit2(display, COMMIT_ATOMIC);
> +	for (i = 0; i < num_combinations; i++) {
> +		igt_display_reset(display);
> +		for (j = 0; j < num_outputs; j++) {
> +			output[j] = get_output_by_id(data,
> +						     force_joiner ?
> +						     data->non_big_joiner_outputs[j] :
> +						     data->big_joiner_outputs[j]);
> +			if (force_joiner) {
> +				igt_force_bigjoiner_enable(data->drm_fd,
> +							   output[j]->name, true);

Do we need to check the sysfs write status? since this helper has the 
return type as non-void.

> +				igt_assert(igt_check_force_bigjoiner_status(data->drm_fd,
> +									    output[j]->name) == 1);
> +			}
> +			igt_info("Assigning pipe %d to %s%s",
> +				 data->pipe_seq[combinations[i].combination[j]],

Let's print the pipe name which is more redable than index.

> +				 output[j]->name, j == num_outputs - 1 ? "\n" : ", ");
> +			igt_output_set_pipe(output[j], data->pipe_seq[combinations[i].combination[j]]);
> +			primary[j] = igt_output_get_plane_type(output[j], DRM_PLANE_TYPE_PRIMARY);
> +			mode = igt_output_get_mode(output[j]);
> +			igt_create_pattern_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, DRM_FORMAT_XRGB8888,
> +								  DRM_FORMAT_MOD_LINEAR, &fb[j]);
> +			igt_plane_set_fb(primary[j], &fb[j]);
> +		}
> +		ret = igt_display_try_commit2(display, COMMIT_ATOMIC);
> +		if (ret == 0)
> +			igt_display_commit2(display, COMMIT_ATOMIC);

This commit is not required.

> +		else
> +			igt_assert_f(ret == 0, "Commit failed\n");
> +
> +		if (force_joiner) {
> +			for (j = 0; j < num_outputs; j++) {
> +				igt_force_bigjoiner_enable(data->drm_fd, output[j]->name, false);
> +				igt_assert(igt_check_force_bigjoiner_status(data->drm_fd, output[j]->name) == 0);
> +			}
> +		}
> +    }
>   }
>   
>   igt_main
>   {
> +	int i, j;
>   	data_t data;
>   	igt_output_t *output;
> -	drmModeModeInfo mode;
> -	int valid_output = 0, i, count = 0, j = 0;
> -	uint16_t width = 0, height = 0;
> -	enum pipe pipe_seq[IGT_MAX_PIPES];
>   
> +	i = j = 0;
>   	igt_fixture {
>   		data.drm_fd = drm_open_driver_master(DRIVER_INTEL | DRIVER_XE);
>   		kmstest_set_vt_graphics_mode();
> -
>   		igt_display_require(&data.display, data.drm_fd);
>   		igt_require(data.display.is_atomic);
> -
>   		max_dotclock = igt_get_max_dotclock(data.drm_fd);
> +		data.big_joiner_output_count = 0;
> +		data.non_big_joiner_output_count = 0;
> +		data.combined_output_count = 0;
> +		data.output_count = 0;
>   
>   		for_each_connected_output(&data.display, output) {
>   			bool found = false;
>   			drmModeConnector *connector = output->config.connector;
> -
> -			/*
> -			 * Bigjoiner will come in to the picture when the
> -			 * resolution > 5K or clock > max-dot-clock.
> -			 */
>   			found = bigjoiner_mode_found(data.drm_fd, connector, max_dotclock);
> -
>   			if (found) {
> -				data.output[count].output_id = output->id;
> -				memcpy(&data.output[count].mode, &mode, sizeof(drmModeModeInfo));
> -				count++;
> -
> -				width = max(width, mode.hdisplay);
> -				height = max(height, mode.vdisplay);
> +				data.big_joiner_outputs[data.big_joiner_output_count++] = output->id;
> +				igt_output_override_mode(output, &connector->modes[0]);
> +			} else {
> +				if (output_supports_force_joiner(output)) {
> +					data.non_big_joiner_outputs[data.non_big_joiner_output_count++] = output->id;
> +					igt_sort_connector_modes(connector, sort_drm_modes_by_res_dsc);

Do we really need to sort the connector modes?

> +					igt_output_override_mode(output, &connector->modes[0]);
> +				}
>   			}
> -			valid_output++;
> +			data.output_count++;
>   		}
>   
>   		data.n_pipes = 0;
>   		for_each_pipe(&data.display, i) {
>   			data.n_pipes++;
> -			pipe_seq[j] = i;
> +			data.pipe_seq[j] = i;
>   			j++;
>   		}
> -
> -		igt_require_f(count > 0, "No output with 5k+ mode (or) clock > max-dot-clock found\n");
> -
> -		igt_create_pattern_fb(data.drm_fd, width, height, DRM_FORMAT_XRGB8888,
> -				      DRM_FORMAT_MOD_LINEAR, &data.fb);
>   	}
>   
>   	igt_describe("Verify the basic modeset on big joiner mode on all pipes");
>   	igt_subtest_with_dynamic("basic") {
> -		for (i = 0; i < data.n_pipes - 1; i++) {
> -			data.pipe1 = pipe_seq[i];
> -			igt_dynamic_f("pipe-%s", kmstest_pipe_name(pipe_seq[i]))
> -				test_basic_modeset(&data);
> +		igt_require_f(data.big_joiner_output_count > 0, "Big joiner output not found\n");
> +		igt_require_f(data.n_pipes > 1, "Minimum of 2 pipes are required\n");
> +
> +		for (i = 0; i < data.big_joiner_output_count; i++) {
> +			uint64_t num_combinations = 0;
> +			Combination combinations[MAX_COMBINATIONS];
> +
> +			generate_combinations(i+1, data.n_pipes, BIG_JOINER, combinations, &num_combinations);
> +			igt_info("Number of combinations for %d outputs and %d pipes are %ld\n",
> +					 i+1, data.n_pipes, num_combinations);
> +
> +			if (num_combinations > 0)
> +				igt_dynamic_f("%dx-big-joiner", i+1)
> +					test_basic_modeset(&data, i+1, combinations, num_combinations, false);
> +			else
> +				break;

IMHO, we need to split this patch into 2:
1- Rewamp existing subtests
2- Add new subtests for forcejoiner

>   		}
>   	}
>   
> -	igt_describe("Verify if the modeset on the adjoining pipe is rejected "
> -		     "when the pipe is active with a big joiner modeset");
> -	igt_subtest_with_dynamic("invalid-modeset") {
> -		data.pipe1 = pipe_seq[j - 1];
> -
> -		igt_display_reset(&data.display);
> -		for_each_connected_output(&data.display, output) {
> -			if (data.output[0].output_id != output->id)
> -				continue;
> -
> -			mode = data.output[0].mode;
> -			igt_output_set_pipe(output, data.pipe1);
> -			igt_output_override_mode(output, &mode);
> -
> -			igt_dynamic_f("pipe-%s-%s",
> -				      kmstest_pipe_name(data.pipe1),
> -				      igt_output_name(output))
> -				test_invalid_modeset(&data);
> +	igt_describe("Verify the basic modeset on big joiner mode on all pipes");
> +	igt_subtest_with_dynamic("force-joiner-basic") {
> +		igt_require_f(intel_display_ver(intel_get_drm_devid(data.drm_fd)) >= 11,
> +                              "force joiner not supported on this platform\n");
> +		igt_require_f(data.non_big_joiner_output_count > 0, "Big joiner output not found\n");
> +		igt_require_f(data.n_pipes > 1, "Minimum of 2 pipes are required\n");
> +
> +		for (i = 0; i < data.non_big_joiner_output_count; i++) {
> +			uint64_t num_combinations = 0;
> +			Combination combinations[MAX_COMBINATIONS];
> +
> +			generate_combinations(i+1, data.n_pipes, BIG_JOINER, combinations, &num_combinations);
> +			igt_info("Number of combinations for %d outputs and %d pipes are %ld\n",
> +					 i+1, data.n_pipes, num_combinations);
> +
> +			if (num_combinations > 0)
> +				igt_dynamic_f("%dx-joiner", i+1)
> +					test_basic_modeset(&data, i+1, combinations, num_combinations, true);
> +			else
> +				break;
>   		}
> +	}
>   
> -		if(valid_output > 1) {
> -			for (i = 0; i < data.n_pipes - 1; i++) {
> -				igt_output_t *first_output = NULL, *second_output = NULL;
> -
> -				data.pipe1 = pipe_seq[i];
> -				data.pipe2 = pipe_seq[i + 1];
> -
> -				igt_display_reset(&data.display);
> -				for_each_connected_output(&data.display, output) {
> -					if (data.output[0].output_id == output->id) {
> -						first_output = output;
> -						mode = data.output[0].mode;
> +	igt_subtest_with_dynamic("invalid-modeset") {
> +		igt_require_f(data.big_joiner_output_count > 0, "Big joiner output not found\n");
> +		igt_require_f(data.n_pipes > 1, "Minimum of 2 pipes are required\n");
>   
> -						igt_output_set_pipe(output, data.pipe1);
> -						igt_output_override_mode(output, &mode);
> -					} else if (second_output == NULL) {
> -						second_output = output;
> -						igt_output_set_pipe(output, data.pipe2);
> +		if (data.big_joiner_output_count >= 1)
> +			igt_dynamic_f("big_joiner_on_last_pipe")
> +				tets_big_joiner_on_last_pipe(&data, false);
>   
> -						break;
> -					}
> -				}
> +		if (data.big_joiner_output_count > 1)
> +			igt_dynamic_f("invalid_combinations")
> +				test_invalid_modeset_two_joiner(&data, false, false);
>   
> -				igt_dynamic_f("pipe-%s-%s-pipe-%s-%s",
> -					      kmstest_pipe_name(data.pipe1),
> -					      igt_output_name(first_output),
> -					      kmstest_pipe_name(data.pipe2),
> -					      igt_output_name(second_output))
> -					test_invalid_modeset(&data);
> -			}
> +		if (data.big_joiner_output_count == 1 && data.non_big_joiner_output_count > 0) {
> +			data.combined_outputs[data.combined_output_count++] = data.big_joiner_outputs[0];
> +			data.combined_outputs[data.combined_output_count++] = data.non_big_joiner_outputs[0];

Probably, move this logic to igt_fixture & use as:
if (data.combined_output_count)

> +			test_invalid_modeset_two_joiner(&data, false, true);

igt_dynamic() is missing.

- Bhanu

>   		}
>   	}
>   
> -	igt_describe("Verify simultaneous modeset on 2 big joiner outputs");
> -	igt_subtest_with_dynamic("2x-modeset") {
> -		igt_require_f(count > 1, "2 outputs with big joiner modes are required\n");
> -		igt_require_f(data.n_pipes > 3, "Minumum of 4 pipes are required\n");
> -		for (i = 0; (i + 2) < data.n_pipes - 1; i++) {
> -			data.pipe1 = pipe_seq[i];
> -			data.pipe2 = pipe_seq[i + 2];
> -			igt_dynamic_f("pipe-%s-%s", kmstest_pipe_name(pipe_seq[i]), kmstest_pipe_name(pipe_seq[i + 2]))
> -				test_dual_display(&data);
> -		}
> +	igt_subtest_with_dynamic("force-joiner-invalid-modeset") {
> +                igt_require_f(intel_display_ver(intel_get_drm_devid(data.drm_fd)) >= 11,
> +                              "force joiner not supported on this platform\n");
> +		igt_require_f(data.non_big_joiner_output_count > 0, "Non big joiner output not found\n");
> +		igt_require_f(data.n_pipes > 1, "Minimum of 2 pipes are required\n");
> +
> +		if (data.non_big_joiner_output_count >= 1)
> +			igt_dynamic_f("big_joiner_on_last_pipe")
> +				tets_big_joiner_on_last_pipe(&data, true);
> +
> +		if (data.non_big_joiner_output_count > 1)
> +			igt_dynamic_f("invalid_combinations")
> +				test_invalid_modeset_two_joiner(&data, true, false);
>   	}
>   
>   	igt_fixture {
> -		igt_remove_fb(data.drm_fd, &data.fb);
>   		igt_display_fini(&data.display);
>   		drm_close_driver(data.drm_fd);
>   	}


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