Let's start using igt_debugfs_read helper so we
can change the debugfs interface at anytime.

Signed-off-by: Rodrigo Vivi <[email protected]>
---
 tests/kms_psr_sink_crc.c | 57 +++++++-----------------------------------------
 1 file changed, 8 insertions(+), 49 deletions(-)

diff --git a/tests/kms_psr_sink_crc.c b/tests/kms_psr_sink_crc.c
index 5fad9b5..b18e426 100644
--- a/tests/kms_psr_sink_crc.c
+++ b/tests/kms_psr_sink_crc.c
@@ -199,63 +199,22 @@ static void fill_render(data_t *data, uint32_t handle, 
unsigned char color)
 
 static bool psr_possible(data_t *data)
 {
-       FILE *file;
-       char buf[4096];
-       int ret;
-
-       if (running_with_psr_disabled)
-               return true;
-
-       file = igt_debugfs_fopen("i915_edp_psr_status", "r");
-       igt_require(file);
-
-       /* First dump the entire file into the debug log for later analysis
-        * if required.
-        */
-       ret = fread(buf, 1, 4095, file);
-       igt_require(ret > 0);
-       buf[ret] = '\0';
-       igt_debug("i915_edp_psr_status:\n%s", buf);
-       fseek(file, 0, SEEK_SET);
+       char buf[512];
 
-       /* Now check that we have all the preconditions required for PSR */
-       ret = fscanf(file, "Sink_Support: %s\n", buf);
-       igt_require_f(ret == 1 && strcmp(buf, "yes") == 0,
-                     "Sink_Support: %s\n", buf);
+       igt_debugfs_read("i915_edp_psr_status", buf);
 
-       fclose(file);
-       return true;
+       return running_with_psr_disabled ||
+               strstr(buf, "Sink_Support: yes\n");
 }
 
 static bool psr_active(data_t *data)
 {
-       int ret;
-       FILE *file;
-       char str[4];
+       char buf[512];
 
-       if (running_with_psr_disabled)
-               return true;
+       igt_debugfs_read("i915_edp_psr_status", buf);
 
-       file = igt_debugfs_fopen("i915_edp_psr_status", "r");
-       igt_require(file);
-
-       ret = fscanf(file, "Sink_Support: %s\n", str);
-       igt_assert_neq(ret, 0);
-       ret = fscanf(file, "Source_OK: %s\n", str);
-       igt_assert_neq(ret, 0);
-       ret = fscanf(file, "Enabled: %s\n", str);
-       igt_assert_neq(ret, 0);
-       ret = fscanf(file, "Active: %s\n", str);
-       igt_assert_neq(ret, 0);
-       ret = fscanf(file, "Busy frontbuffer bits: %s\n", str);
-       igt_assert_neq(ret, 0);
-       ret = fscanf(file, "Re-enable work scheduled: %s\n", str);
-       igt_assert_neq(ret, 0);
-       ret = fscanf(file, "HW Enabled & Active bit: %s\n", str);
-       igt_assert_neq(ret, 0);
-
-       fclose(file);
-       return strcmp(str, "yes") == 0;
+       return running_with_psr_disabled ||
+               strstr(buf, "HW Enabled & Active bit: yes\n");
 }
 
 static bool wait_psr_entry(data_t *data)
-- 
2.4.3

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