[PATCH i-g-t v2] tests/kms_bw: Restrict linear-tiling subtest to HDMI outputs and improve skip logic

[Pranay Samala]

This patch updates the linear-tiling subtest in kms_bw to only use HDMI
connector. If the platform does not have enough HDMI outputs to match the
number of requested pipes, the test is skipped with a clear message
indicating the requirement and the number of HDMI outputs found.

This avoids attempting to force modes on non-HDMI connectors and makes
the test results clearer and more reliable on systems that don’t have
enough HDMI connectivity.

v2: Skip the test instead of continue (Rama)
    Remove hdmi_count (Rama)
Signed-off-by: Pranay Samala <pranay.samala at intel.com>
---
 tests/kms_bw.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/kms_bw.c b/tests/kms_bw.c
index ca05695d3..3ebfdcebd 100644
--- a/tests/kms_bw.c
+++ b/tests/kms_bw.c
@@ -195,6 +195,7 @@ static void run_test_linear_tiling(data_t *data, int pipe, const drmModeModeInfo
 	int i = 0, num_pipes = 0;
 	enum pipe p;
 	int ret;
+	uint32_t conn_type;
 
 	/* Cannot use igt_display_get_n_pipes() due to fused pipes on i915 where they do
 	 * not give the numver of valid crtcs and always return IGT_MAX_PIPES */
@@ -215,6 +216,13 @@ static void run_test_linear_tiling(data_t *data, int pipe, const drmModeModeInfo
 			continue;
 		}
 
+		conn_type = output->config.connector->connector_type;
+
+		igt_skip_on_f(!physical &&
+			      conn_type != DRM_MODE_CONNECTOR_HDMIA &&
+			      conn_type != DRM_MODE_CONNECTOR_HDMIB,
+			      "Cannot force mode, connected output is not HDMI\n");
+
 		force_output_mode(data, output, mode);
 
 		igt_create_color_fb(display->drm_fd, mode->hdisplay,
-- 
2.34.1