[igt-dev] [PATCH i-g-t 3/3] lib/igt_kms: Remove fragile display_info debugfs parsing

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Relying on the specific layout of the display_info debugfs
file is fragile. Any change in the file layout will likely
result in test failure. Let's just get rid of it.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 lib/igt_kms.c | 141 --------------------------------------------------
 lib/igt_kms.h |   1 -
 2 files changed, 142 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index e9b80b9bcb81..7095d8252262 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -1520,147 +1520,6 @@ void kmstest_wait_for_pageflip(int fd)
 	igt_assert(drmHandleEvent(fd, &evctx) == 0);
 }
 
-static void get_plane(char *str, int type, struct kmstest_plane *plane)
-{
-	int ret;
-	char buf[256];
-
-	plane->type = type;
-	ret = sscanf(str + 12, "%d%*c %*s %[^n]s",
-		     &plane->id,
-		     buf);
-	igt_assert_eq(ret, 2);
-
-	ret = sscanf(buf + 9, "%4d%*c%4d%*c", &plane->pos_x, &plane->pos_y);
-	igt_assert_eq(ret, 2);
-
-	ret = sscanf(buf + 30, "%4d%*c%4d%*c", &plane->width, &plane->height);
-	igt_assert_eq(ret, 2);
-}
-
-static int parse_planes(FILE *fid, struct kmstest_plane *planes)
-{
-	char tmp[256];
-	int n_planes;
-
-	n_planes = 0;
-	while (fgets(tmp, 256, fid) != NULL) {
-		if (strstr(tmp, "type=PRI") != NULL) {
-			if (planes) {
-				get_plane(tmp, DRM_PLANE_TYPE_PRIMARY, &planes[n_planes]);
-				planes[n_planes].index = n_planes;
-			}
-			n_planes++;
-		} else if (strstr(tmp, "type=OVL") != NULL) {
-			if (planes) {
-				get_plane(tmp, DRM_PLANE_TYPE_OVERLAY, &planes[n_planes]);
-				planes[n_planes].index = n_planes;
-			}
-			n_planes++;
-		} else if (strstr(tmp, "type=CUR") != NULL) {
-			if (planes) {
-				get_plane(tmp, DRM_PLANE_TYPE_CURSOR, &planes[n_planes]);
-				planes[n_planes].index = n_planes;
-			}
-			n_planes++;
-			break;
-		}
-	}
-
-	return n_planes;
-}
-
-static void parse_crtc(char *info, struct kmstest_crtc *crtc)
-{
-	char buf[256];
-	int ret;
-	char pipe;
-
-	ret = sscanf(info + 4, "%d%*c %*s %c%*c %*s %s%*c",
-		     &crtc->id, &pipe, buf);
-	igt_assert_eq(ret, 3);
-
-	crtc->pipe = kmstest_pipe_to_index(pipe);
-	igt_assert(crtc->pipe >= 0);
-
-	ret = sscanf(buf + 6, "%d%*c%d%*c",
-		     &crtc->width, &crtc->height);
-	igt_assert_eq(ret, 2);
-}
-
-static void kmstest_get_crtc(int device, enum pipe pipe, struct kmstest_crtc *crtc)
-{
-	char tmp[256];
-	FILE *file;
-	int ncrtc;
-	int line;
-	long int n;
-	int fd;
-
-	fd = igt_debugfs_open(device, "i915_display_info", O_RDONLY);
-	file = fdopen(fd, "r");
-	igt_skip_on(file == NULL);
-
-	ncrtc = 0;
-	line = 0;
-	while (fgets(tmp, 256, file) != NULL) {
-		if ((strstr(tmp, "CRTC") != NULL) && (line > 0)) {
-			if (strstr(tmp, "active=yes") != NULL) {
-				crtc->active = true;
-				parse_crtc(tmp, crtc);
-
-				n = ftell(file);
-				crtc->n_planes = parse_planes(file, NULL);
-				igt_assert_lt(0, crtc->n_planes);
-				crtc->planes = calloc(crtc->n_planes, sizeof(*crtc->planes));
-				igt_assert_f(crtc->planes, "Failed to allocate memory for %d planes\n", crtc->n_planes);
-
-				fseek(file, n, SEEK_SET);
-				parse_planes(file, crtc->planes);
-
-				if (crtc->pipe != pipe) {
-					free(crtc->planes);
-				} else {
-					ncrtc++;
-					break;
-				}
-			}
-		}
-
-		line++;
-	}
-
-	fclose(file);
-	close(fd);
-
-	igt_assert(ncrtc == 1);
-}
-
-/**
- * igt_assert_plane_visible:
- * @fd: Opened file descriptor
- * @pipe: Display pipe
- * @visibility: Boolean parameter to test against the plane's current visibility state
- *
- * Asserts only if the plane's visibility state matches the status being passed by @visibility
- */
-void igt_assert_plane_visible(int fd, enum pipe pipe, int plane_index, bool visibility)
-{
-	struct kmstest_crtc crtc;
-	bool visible = true;
-
-	kmstest_get_crtc(fd, pipe, &crtc);
-
-	igt_assert(plane_index < crtc.n_planes);
-
-	if (crtc.planes[plane_index].pos_x > crtc.width ||
-	    crtc.planes[plane_index].pos_y > crtc.height)
-		visible = false;
-
-	free(crtc.planes);
-	igt_assert_eq(visible, visibility);
-}
-
 /**
  * kms_has_vblank:
  * @fd: DRM fd
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 7193f9a50ea2..3f798392f8a0 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -228,7 +228,6 @@ void *kmstest_dumb_map_buffer(int fd, uint32_t handle, uint64_t size,
 void kmstest_dumb_destroy(int fd, uint32_t handle);
 void kmstest_wait_for_pageflip(int fd);
 unsigned int kmstest_get_vblank(int fd, int pipe, unsigned int flags);
-void igt_assert_plane_visible(int fd, enum pipe pipe, int plane_index, bool visibility);
 
 bool kms_has_vblank(int fd);
 
-- 
2.23.0