[igt-dev] [i-g-t V2] tests/kms: s/i915_frequency_info/i915_cdclk_info/
Bhanuprakash Modem
bhanuprakash.modem at intel.com
Fri Apr 14 05:08:30 UTC 2023
Read display specific clock frequency info from debugfs
"i915_cdclk_info".
V2: - For older Kernels, readback from i915_frequency_info
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
---
tests/i915/kms_cdclk.c | 10 +++++++++-
tests/kms_invalid_mode.c | 23 +++++++++++++++++++----
2 files changed, 28 insertions(+), 5 deletions(-)
diff --git a/tests/i915/kms_cdclk.c b/tests/i915/kms_cdclk.c
index 23d9d3b02e2..bb003680229 100644
--- a/tests/i915/kms_cdclk.c
+++ b/tests/i915/kms_cdclk.c
@@ -61,8 +61,16 @@ static int get_current_cdclk_freq(int debugfs_fd)
char *start_loc;
int res;
- res = igt_debugfs_simple_read(debugfs_fd, "i915_frequency_info",
+ /*
+ * Display specific clock frequency info is moved to i915_cdclk_info,
+ * On older kernels if this debugfs is not found, fallback to read from
+ * i915_frequency_info.
+ */
+ res = igt_debugfs_simple_read(debugfs_fd, "i915_cdclk_info",
buf, sizeof(buf));
+ if (res <= 0)
+ res = igt_debugfs_simple_read(debugfs_fd, "i915_frequency_info",
+ buf, sizeof(buf));
igt_require(res > 0);
igt_assert(start_loc = strstr(buf, "Current CD clock frequency: "));
diff --git a/tests/kms_invalid_mode.c b/tests/kms_invalid_mode.c
index 86f529e88b1..6ef36d3cc98 100644
--- a/tests/kms_invalid_mode.c
+++ b/tests/kms_invalid_mode.c
@@ -217,14 +217,29 @@ static int i915_max_dotclock(data_t *data)
{
char buf[4096];
char *s;
- int max_dotclock = 0;
+ int dir, res, max_dotclock = 0;
if (!is_i915_device(data->drm_fd))
return 0;
- igt_debugfs_read(data->drm_fd, "i915_frequency_info", buf);
- s = strstr(buf, "Max pixel clock frequency:");
- igt_assert(s);
+ dir = igt_debugfs_dir(data->drm_fd);
+ igt_require(dir);
+
+ /*
+ * Display specific clock frequency info is moved to i915_cdclk_info,
+ * On older kernels if this debugfs is not found, fallback to read from
+ * i915_frequency_info.
+ */
+ res = igt_debugfs_simple_read(dir, "i915_cdclk_info",
+ buf, sizeof(buf));
+ if (res <= 0)
+ res = igt_debugfs_simple_read(dir, "i915_frequency_info",
+ buf, sizeof(buf));
+ close(dir);
+
+ igt_require(res > 0);
+
+ igt_assert(s = strstr(buf, "Max pixel clock frequency:"));
igt_assert_eq(sscanf(s, "Max pixel clock frequency: %d kHz", &max_dotclock), 1);
/* 100 Mhz to 5 GHz seem like reasonable values to expect */
--
2.40.0
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