[PATCH i-g-t v3 1/1] tests/kms_hdr: Test brightness manipulation in HDR mode
Kandpal, Suraj
suraj.kandpal at intel.com
Fri Oct 4 05:19:42 UTC 2024
From: Reddy Guddati, Santhosh <santhosh.reddy.guddati at intel.com>
Sent: Wednesday, October 2, 2024 8:26:33 pm
To: igt-dev at lists.freedesktop.org <igt-dev at lists.freedesktop.org>
Cc: Samala, Pranay <pranay.samala at intel.com>; Kandpal, Suraj <suraj.kandpal at intel.com>; Reddy Guddati, Santhosh <santhosh.reddy.guddati at intel.com>
Subject: [PATCH i-g-t v3 1/1] tests/kms_hdr: Test brightness manipulation in HDR mode
Add subtest for backlight control on hdr enabled edp panels
by changing brightness via sysfs.
v2: adjust brightness range, refactor and restore brightness (Pranay)
v3: reuse functions, add flags to avoid duplicate code (Suraj)
Signed-off-by: Santhosh Reddy Guddati <santhosh.reddy.guddati at intel.com>
---
tests/kms_hdr.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 82 insertions(+), 1 deletion(-)
diff --git a/tests/kms_hdr.c b/tests/kms_hdr.c
index f123c6b36..0f07e770b 100644
--- a/tests/kms_hdr.c
+++ b/tests/kms_hdr.c
@@ -64,6 +64,10 @@
* Description: Tests static toggle with suspend
* Functionality: colorspace, static_hdr, suspend
*
+ * SUBTEST: brightness-with-hdr
+ * Description: Tests brightness with HDR
+ * Functionality: colorspace, static_hdr
+ *
* SUBTEST: static-%s
* Description: Tests %arg[1].
* Functionality: colorspace, static_hdr
@@ -81,6 +85,8 @@ IGT_TEST_DESCRIPTION("Test HDR metadata interfaces and bpc switch");
#define HDR_STATIC_METADATA_BLOCK 0x06
#define USE_EXTENDED_TAG 0x07
+#define INTEL_BACKLIGHT_PATH "/sys/class/backlight/intel_backlight"
+
/* DRM HDR definitions. Not in the UAPI header, unfortunately. */
enum hdmi_metadata_type {
HDMI_STATIC_METADATA_TYPE1 = 0,
@@ -100,6 +106,7 @@ enum {
TEST_SWAP = 1 << 3,
TEST_INVALID_METADATA_SIZES = 1 << 4,
TEST_INVALID_HDR = 1 << 5,
+ TEST_BRIGHTNESS = 1 << 6,
};
/* BPC connector state. */
@@ -448,6 +455,72 @@ static void fill_hdr_output_metadata_st2048(struct hdr_output_metadata *meta)
meta->hdmi_metadata_type1.max_cll = 500; /* 500 nits */
}
+/* TODO: Move adjust_brightness to lib/igt_sysfs to reuse in other tests. */
+static void adjust_brightness(data_t *data, uint32_t flags)
-----------------
Do we not have a function in kms_brightness to manipulate brightness let's reuse that rather than writing the whole function here
Regards,
Suraj Kandpal
----------------------
+{
+ char brightness_path[1024];
+ int brightness_fd;
+ char brightness_value[64];
+ int current_brightness;
+ int max_brightness;
+ int read_brightness;
+ int fd, i;
+
+ /* Get max brightness */
+ snprintf(brightness_path, sizeof(brightness_path),
+ "%s/%s", INTEL_BACKLIGHT_PATH, "max_brightness");
+ fd = open(brightness_path, O_RDONLY);
+ igt_assert_f(fd >= 0, "Failed to open %s\n", brightness_path);
+
+ igt_assert(read(fd, brightness_value, sizeof(brightness_value)) > 0);
+
+ max_brightness = atoi(brightness_value);
+
+ close(fd);
+
+ /* Get current brightness */
+ snprintf(brightness_path, sizeof(brightness_path),
+ "%s/%s", INTEL_BACKLIGHT_PATH, "brightness");
+ fd = open(brightness_path, O_RDONLY);
+ igt_assert_f(fd >= 0, "Failed to open %s\n", brightness_path);
+
+ igt_assert(read(fd, brightness_value, sizeof(brightness_value)) > 0);
+
+ current_brightness = atoi(brightness_value);
+
+ close(fd);
+
+ for (i = 0; i <= max_brightness; i += 50) {
+ fd = open(brightness_path, O_WRONLY);
+ igt_assert_f(fd >= 0, "Failed to open %s\n", brightness_path);
+
+ snprintf(brightness_value, sizeof(brightness_value), "%d", i);
+ igt_assert(write(fd, brightness_value, strlen(brightness_value)) > 0);
+
+ close(fd);
+
+ /* Verify brightness adjustment */
+ fd = open(brightness_path, O_RDONLY);
+ igt_assert(fd >= 0);
+
+ igt_assert(read(fd, brightness_value, sizeof(brightness_value)) > 0);
+
+ read_brightness = atoi(brightness_value);
+
+ igt_assert_eq(read_brightness, i);
+
+ close(fd);
+ }
+
+ fd = open(brightness_path, O_WRONLY);
+ igt_assert_f(fd >= 0, "Failed to open %s\n", brightness_path);
+
+ snprintf(brightness_value, sizeof(brightness_value), "%d", current_brightness);
+ igt_assert(write(brightness_fd, brightness_value, strlen(brightness_value)) > 0);
+
+ close(fd);
+}
+
static void test_static_toggle(data_t *data, enum pipe pipe,
igt_output_t *output,
uint32_t flags)
@@ -483,6 +556,9 @@ static void test_static_toggle(data_t *data, enum pipe pipe,
igt_assert_eq(system("dmesg|tail -n 1000|grep -E \"Unknown EOTF [0-9]+\""), 0);
goto cleanup;
}
+ if (flags & TEST_BRIGHTNESS)
+ adjust_brightness(data, flags);
+
igt_assert_output_bpc_equal(data->fd, pipe, output->name, 10);
/* Verify that the CRC are equal after DPMS or suspend. */
@@ -685,7 +761,8 @@ static void test_hdr(data_t *data, uint32_t flags)
igt_dynamic_f("pipe-%s-%s",
kmstest_pipe_name(pipe), output->name) {
- if (flags & (TEST_NONE | TEST_DPMS | TEST_SUSPEND | TEST_INVALID_HDR))
+ if (flags & (TEST_NONE | TEST_DPMS | TEST_SUSPEND |
+ TEST_INVALID_HDR | TEST_BRIGHTNESS))
test_static_toggle(data, pipe, output, flags);
if (flags & TEST_SWAP)
test_static_swap(data, pipe, output);
@@ -734,6 +811,10 @@ igt_main
igt_subtest_with_dynamic("static-toggle-suspend")
test_hdr(&data, TEST_SUSPEND);
+ igt_describe("Tests brightness while entering and exiting HDR mode");
+ igt_subtest_with_dynamic("brightness-with-hdr")
+ test_hdr(&data, TEST_BRIGHTNESS);
+
igt_describe("Tests swapping static HDR metadata");
igt_subtest_with_dynamic("static-swap")
test_hdr(&data, TEST_SWAP);
--
2.34.1
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