[igt-dev] [PATCH i-g-t 1/2] tests: Share the code handling PSR debugfs parsing

["José Roberto de Souza" <jose.souza@intel.com>]

The same code checking if sink supports PSR was spread into 3 tests,
better move it to lib and reuse.
Also kms_fbcon_fbt was doing its own handling to wait for PSR to get
enabled while it is already available in lib.

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 lib/igt_psr.c                    |  9 +++++++++
 lib/igt_psr.h                    |  1 +
 tests/kms_fbcon_fbt.c            | 26 ++------------------------
 tests/kms_frontbuffer_tracking.c |  8 +-------
 tests/kms_psr.c                  |  8 +-------
 5 files changed, 14 insertions(+), 38 deletions(-)

diff --git a/lib/igt_psr.c b/lib/igt_psr.c
index 0ddfb64f..f36496fd 100644
--- a/lib/igt_psr.c
+++ b/lib/igt_psr.c
@@ -129,3 +129,12 @@ bool psr_disable(int debugfs_fd)
 {
 	return psr_set(debugfs_fd, false);
 }
+
+bool psr_supported(int debugfs_fd)
+{
+	char buf[512];
+
+	igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
+				sizeof(buf));
+	return strstr(buf, "Sink_Support: yes\n");
+}
diff --git a/lib/igt_psr.h b/lib/igt_psr.h
index b9693822..a4fcf325 100644
--- a/lib/igt_psr.h
+++ b/lib/igt_psr.h
@@ -32,5 +32,6 @@ bool psr_wait_entry(int debugfs_fd);
 bool psr_wait_exit(int debugfs_fd);
 bool psr_enable(int debugfs_fd);
 bool psr_disable(int debugfs_fd);
+bool psr_supported(int debugfs_fd);
 
 #endif
diff --git a/tests/kms_fbcon_fbt.c b/tests/kms_fbcon_fbt.c
index 24d3ad90..32407709 100644
--- a/tests/kms_fbcon_fbt.c
+++ b/tests/kms_fbcon_fbt.c
@@ -168,19 +168,6 @@ static void set_mode_for_one_screen(struct drm_info *drm, struct igt_fb *fb,
 	igt_assert_eq(rc, 0);
 }
 
-static bool psr_supported_on_chipset(int debugfs_fd)
-{
-	char buf[256];
-	int ret;
-
-	ret = igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status",
-				      buf, sizeof(buf));
-	if (ret < 0)
-		return false;
-
-	return strstr(buf, "Sink_Support: yes\n");
-}
-
 static bool connector_can_psr(drmModeConnectorPtr connector)
 {
 	return (connector->connector_type == DRM_MODE_CONNECTOR_eDP);
@@ -195,18 +182,9 @@ static void psr_print_status(int debugfs_fd)
 	igt_debug("PSR status: %s\n", buf);
 }
 
-static bool psr_is_enabled(int debugfs_fd)
-{
-	char buf[256];
-
-	igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
-				sizeof(buf));
-	return strstr(buf, "\nHW Enabled & Active bit: yes\n");
-}
-
 static bool psr_wait_until_enabled(int debugfs_fd)
 {
-	bool r = igt_wait(psr_is_enabled(debugfs_fd), 5000, 1);
+	bool r = psr_wait_entry(debugfs_fd);
 
 	psr_print_status(debugfs_fd);
 	return r;
@@ -239,7 +217,7 @@ struct feature {
 	.connector_possible_fn = connector_can_fbc,
 	.enable = fbc_modparam_enable,
 }, psr = {
-	.supported_on_chipset = psr_supported_on_chipset,
+	.supported_on_chipset = psr_supported,
 	.wait_until_enabled = psr_wait_until_enabled,
 	.connector_possible_fn = connector_can_psr,
 	.enable = psr_debugfs_enable,
diff --git a/tests/kms_frontbuffer_tracking.c b/tests/kms_frontbuffer_tracking.c
index 9aecb815..1725217b 100644
--- a/tests/kms_frontbuffer_tracking.c
+++ b/tests/kms_frontbuffer_tracking.c
@@ -1419,13 +1419,7 @@ static void teardown_fbc(void)
 
 static bool psr_sink_has_support(void)
 {
-	char buf[256];
-
-	debugfs_read("i915_edp_psr_status", buf);
-	if (*buf == '\0') /* !HAS_PSR -> -ENODEV*/
-		return false;
-
-	return strstr(buf, "Sink_Support: yes\n");
+	return psr_supported(drm.debugfs);
 }
 
 static void setup_psr(void)
diff --git a/tests/kms_psr.c b/tests/kms_psr.c
index 9767f475..b8ce7c4d 100644
--- a/tests/kms_psr.c
+++ b/tests/kms_psr.c
@@ -190,13 +190,7 @@ static void fill_render(data_t *data, uint32_t handle, unsigned char color)
 
 static bool sink_support(data_t *data)
 {
-	char buf[512];
-
-	igt_debugfs_simple_read(data->debugfs_fd, "i915_edp_psr_status",
-			 buf, sizeof(buf));
-
-	return data->with_psr_disabled ||
-		strstr(buf, "Sink_Support: yes\n");
+	return data->with_psr_disabled || psr_supported(data->debugfs_fd);
 }
 
 static bool psr_wait_entry_if_enabled(data_t *data)
-- 
2.19.0

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