[Intel-gfx] [PATCH v2 4/5] lib/tests: make kmstest_get_pipe_from_crtc_id and igt_enable_connectors generic to prepare for platform agnostic tests

[Micah Fedke]

There is some miscellaneous plumbing to do if we are going to have a test that
runs on all platforms.  intel and exynos are the current targets.  The test we
are aiming to support is drm_read.  There is much intel-specific code
throughout the support library, so anyone attempting to make other tests
platform agnostic will run into more of this type of thing.

kmstest_get_connector_config() issues an intel-specific ioctl via
kmstest_get_pipe_from_crtc_id() and asserts on the return.  This patch removes
the call to kmstest_get_pipe_from_crtc_id altogether and instead assigns the
crct id according to its array index in the drmModeRes struct.  This seems to
be the default behavior for the drm anyway.

igt_enable_connectors() reopens the drm dev node to perform its work, but it
can't know which chipset to specify to the new drm_open_driver*() API.  This
patch modifies igt_enable_connectors() to take an already open drm fd to work
on, so that the chipset is implied.  igt_enable_connectors() performs generic
drm work only, so it should not need to do anything chipset-specific.  There
could be an argument here for isolating this work on a separate fd, but I can't
see how it would make a difference to the drm.

Signed-off-by: Micah Fedke <micah.fedke at collabora.co.uk>
---
 lib/igt_kms.c              | 9 ++-------
 lib/igt_kms.h              | 2 +-
 tests/kms_flip.c           | 2 +-
 tests/kms_pipe_crc_basic.c | 2 +-
 4 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 7e956b4..78c98d2 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -629,8 +629,7 @@ found:
 	config->encoder = encoder;
 	config->crtc = drmModeGetCrtc(drm_fd, resources->crtcs[i]);
 	config->crtc_idx = i;
-	config->pipe = kmstest_get_pipe_from_crtc_id(drm_fd,
-						     config->crtc->crtc_id);
+	config->pipe = i;
 
 	drmModeFreeResources(resources);
 
@@ -1801,13 +1800,10 @@ void igt_wait_for_vblank(int drm_fd, enum pipe pipe)
  * An exit handler is installed to ensure connectors are reset when the test
  * exits.
  */
-void igt_enable_connectors(void)
+void igt_enable_connectors(int drm_fd)
 {
 	drmModeRes *res;
 	drmModeConnector *c;
-	int drm_fd;
-
-	drm_fd = drm_open_driver(DRIVER_INTEL);
 
 	res = drmModeGetResources(drm_fd);
 
@@ -1830,7 +1826,6 @@ void igt_enable_connectors(void)
 
 		drmModeFreeConnector(c);
 	}
-	close(drm_fd);
 }
 
 /**
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 565df14..b5f007d 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -270,7 +270,7 @@ void igt_wait_for_vblank(int drm_fd, enum pipe pipe);
 
 #define IGT_FIXED(i,f)	((i) << 16 | (f))
 
-void igt_enable_connectors(void);
+void igt_enable_connectors(int drm_fd);
 void igt_reset_connectors(void);
 
 #define EDID_LENGTH 128
diff --git a/tests/kms_flip.c b/tests/kms_flip.c
index 4d8d0c0..a88e707 100644
--- a/tests/kms_flip.c
+++ b/tests/kms_flip.c
@@ -1702,7 +1702,7 @@ int main(int argc, char **argv)
 	igt_fixture {
 		drm_fd = drm_open_driver_master(DRIVER_INTEL);
 
-		igt_enable_connectors();
+		igt_enable_connectors(drm_fd);
 
 		kmstest_set_vt_graphics_mode();
 		igt_install_exit_handler(kms_flip_exit_handler);
diff --git a/tests/kms_pipe_crc_basic.c b/tests/kms_pipe_crc_basic.c
index fc4ad46..10ef097 100644
--- a/tests/kms_pipe_crc_basic.c
+++ b/tests/kms_pipe_crc_basic.c
@@ -228,7 +228,7 @@ igt_main
 	igt_fixture {
 		data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
 
-		igt_enable_connectors();
+		igt_enable_connectors(data.drm_fd);
 
 		kmstest_set_vt_graphics_mode();
 
-- 
2.5.0