<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-IN" link="#467886" vlink="#96607D" style="word-wrap:break-word"> <div class="WordSection1"> Hi Suraj, Agreed, we do have similar functionality in kms_brightness, but it requires some adjustments . I plan to move these functions “backlight_read” , “backlight_write” to lib/igt_sysfs and make the necessary modifications at a later stage.<o:p></o:p> <o:p> </o:p> Please provide your thoughts on this approach. Regards, Santhosh<o:p></o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm"> From: Kandpal, Suraj <suraj.kandpal@intel.com> Sent: Friday, October 4, 2024 10:50 AM To: Reddy Guddati, Santhosh <santhosh.reddy.guddati@intel.com>; igt-dev@lists.freedesktop.org Cc: Samala, Pranay <pranay.samala@intel.com>; Reddy Guddati, Santhosh <santhosh.reddy.guddati@intel.com> Subject: Re: [PATCH i-g-t v3 1/1] tests/kms_hdr: Test brightness manipulation in HDR mode<o:p></o:p> </div> </div> <o:p> </o:p> <div> From: Reddy Guddati, Santhosh <<a href="mailto:santhosh.reddy.guddati@intel.com">santhosh.reddy.guddati@intel.com</a>><o:p></o:p> </div> <div id="mail-editor-reference-message-container"> <div id="divRplyFwdMsg"> Sent: Wednesday, October 2, 2024 8:26:33 pm To: <a href="mailto:igt-dev@lists.freedesktop.org"> igt-dev@lists.freedesktop.org</a> <<a href="mailto:igt-dev@lists.freedesktop.org">igt-dev@lists.freedesktop.org</a>> Cc: Samala, Pranay <<a href="mailto:pranay.samala@intel.com">pranay.samala@intel.com</a>>; Kandpal, Suraj <<a href="mailto:suraj.kandpal@intel.com">suraj.kandpal@intel.com</a>>; Reddy Guddati, Santhosh <<a href="mailto:santhosh.reddy.guddati@intel.com">santhosh.reddy.guddati@intel.com</a>> Subject: [PATCH i-g-t v3 1/1] tests/kms_hdr: Test brightness manipulation in HDR mode<o:p></o:p> </div> <o:p></o:p> <div> 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 <<a href="mailto:santhosh.reddy.guddati@intel.com">santhosh.reddy.guddati@intel.com</a>> --- 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)<o:p></o:p> </div> <div> <o:p> </o:p> </div> <div> -----------------<o:p></o:p> </div> <div> Do we not have a function in kms_brightness to manipulate brightness let's reuse that rather than writing the whole function here<o:p></o:p> </div> <div> <o:p> </o:p> </div> <div> Regards,<o:p></o:p> </div> <div> Suraj Kandpal<o:p></o:p> </div> <div> <o:p> </o:p> </div> <div> ---------------------- +{ + 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<o:p></o:p> </div> <o:p> </o:p> </div> </div> </body> </html>