[PATCH i-g-t v8 2/9] tests/kms_async_flips: set mask for available hardware pipes

["Michał Grzelak" <michal.grzelak@linux.intel.com>]

Mapping from hardware pipe into CRTC is needed when testing suspend
since we need to run test on at least first and last pipe. Currently
there is a direct mapping between CRTC and hardware pipe but this will
break after introduction of pipe reordering.

Compute array of all available hardware pipes. While doing it also
compute first and last pipe. Recompute the array on each test since
testing first and last pipe will only be needed in suspend-resume
scenario.

Skip testing CRTCs that map to unavailable pipes. Currently this is a
no-op but this will change after limiting suspend tests to first and
last pipe.

v7->v8
- add patch

Signed-off-by: Michał Grzelak <michal.grzelak@linux.intel.com>
---
 tests/kms_async_flips.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/tests/kms_async_flips.c b/tests/kms_async_flips.c
index 8884efd8ba..a548c73cd9 100644
--- a/tests/kms_async_flips.c
+++ b/tests/kms_async_flips.c
@@ -140,6 +140,7 @@ typedef struct {
 	bool flip_pending;
 	igt_crtc_t *crtc;
 	bool alternate_sync_async;
+	bool available_pipes[IGT_MAX_PIPES];
 	bool suspend_resume;
 	bool hang;
 	bool dpms;
@@ -288,10 +289,36 @@ static void require_overlay_flip_support(data_t *data)
 		      "Async flip for overlay planes not supported\n");
 }
 
+static bool set_available_hw_pipes(data_t *data)
+{
+	enum hardware_pipe first_pipe = IGT_MAX_PIPES;
+	enum hardware_pipe last_pipe = PIPE_NONE;
+	enum hardware_pipe hw_pipe;
+	igt_crtc_t *crtc;
+
+	for_each_crtc(&data->display, crtc) {
+		hw_pipe = crtc->hardware_pipe;
+		data->available_pipes[hw_pipe] = true;
+
+		if (last_pipe < hw_pipe)
+			last_pipe = hw_pipe;
+
+		if (first_pipe > hw_pipe)
+			first_pipe = hw_pipe;
+	}
+
+	if (first_pipe == IGT_MAX_PIPES || last_pipe == PIPE_NONE)
+	        return false;
+
+	return true;
+}
+
 static void test_init(data_t *data)
 {
 	drmModeModeInfo *mode;
 
+	set_available_hw_pipes(data);
+
 	igt_display_reset(&data->display);
 	igt_display_commit(&data->display);
 
@@ -892,6 +919,9 @@ static void run_test(data_t *data, void (*test)(data_t *))
 
 			test_init(data);
 
+			if (!data->available_pipes[crtc->hardware_pipe])
+				continue;
+
 			if (data->linear_modifier)
 				data->modifier = DRM_FORMAT_MOD_LINEAR;
 			else
-- 
2.45.2