[PATCH i-g-t] tests/i915/i915_pm_backlight: Add new subtest to validate dual panel backlight
Nidhi Gupta
nidhi1.gupta at intel.com
Wed Oct 12 03:34:16 UTC 2022
Since driver can now support multiple eDPs and Debugfs structure for
backlight changed per connector the test should then iterate through
all eDP connectors.
Signed-off-by: Nidhi Gupta <nidhi1.gupta at intel.com>
---
tests/i915/i915_pm_backlight.c | 180 +++++++++++++++++++++++++++++------------
1 file changed, 129 insertions(+), 51 deletions(-)
diff --git a/tests/i915/i915_pm_backlight.c b/tests/i915/i915_pm_backlight.c
index cafae7f..893150b 100644
--- a/tests/i915/i915_pm_backlight.c
+++ b/tests/i915/i915_pm_backlight.c
@@ -34,28 +34,31 @@
#include <errno.h>
#include <unistd.h>
#include <time.h>
+#include "igt_device.h"
+#include "igt_device_scan.h"
struct context {
int max;
+ char path[PATH_MAX];
};
#define TOLERANCE 5 /* percent */
-#define BACKLIGHT_PATH "/sys/class/backlight/intel_backlight"
+#define BACKLIGHT_PATH "/sys/class/backlight"
#define FADESTEPS 10
#define FADESPEED 100 /* milliseconds between steps */
IGT_TEST_DESCRIPTION("Basic backlight sysfs test");
-static int backlight_read(int *result, const char *fname)
+static int backlight_read(int *result, const char *fname, struct context *context)
{
int fd;
char full[PATH_MAX];
- char dst[64];
+ char dst[512];
int r, e;
- igt_assert(snprintf(full, PATH_MAX, "%s/%s", BACKLIGHT_PATH, fname) < PATH_MAX);
+ igt_assert(snprintf(full, PATH_MAX, "%s/%s/%s", BACKLIGHT_PATH, context->path, fname) < PATH_MAX);
fd = open(full, O_RDONLY);
if (fd == -1)
@@ -70,23 +73,28 @@ static int backlight_read(int *result, const char *fname)
errno = 0;
*result = strtol(dst, NULL, 10);
+ igt_debug ("nidhi:result:inside:read%i", *result);
return errno;
}
-static int backlight_write(int value, const char *fname)
+static int backlight_write(int value, const char *fname, struct context *context)
{
int fd;
char full[PATH_MAX];
char src[64];
int len;
- igt_assert(snprintf(full, PATH_MAX, "%s/%s", BACKLIGHT_PATH, fname) < PATH_MAX);
+ igt_assert(snprintf(full, PATH_MAX, "%s/%s/%s", BACKLIGHT_PATH, context->path, fname) < PATH_MAX);
fd = open(full, O_WRONLY);
if (fd == -1)
return -errno;
+ igt_debug("nidhi:full-patch: %s\n",full);
+ igt_debug("nidhi:val:%i\n", value);
len = snprintf(src, sizeof(src), "%i", value);
+ igt_debug("nidhi-src:1:%s len: %i\n", src, len);
len = write(fd, src, len);
+ igt_debug("nidhi-len:2:%i\n", len);
close(fd);
if (len < 0)
@@ -100,12 +108,13 @@ static void test_and_verify(struct context *context, int val)
const int tolerance = val * TOLERANCE / 100;
int result;
- igt_assert_eq(backlight_write(val, "brightness"), 0);
- igt_assert_eq(backlight_read(&result, "brightness"), 0);
+ igt_assert_eq(backlight_write(val, "brightness", context), 0);
+ igt_assert_eq(backlight_read(&result, "brightness", context), 0);
/* Check that the exact value sticks */
igt_assert_eq(result, val);
- igt_assert_eq(backlight_read(&result, "actual_brightness"), 0);
+ igt_assert_eq(backlight_read(&result, "actual_brightness", context), 0);
+ igt_debug("nidhi:actual_brightness: %i\n", result);
/* Some rounding may happen depending on hw */
igt_assert_f(result >= max(0, val - tolerance) &&
result <= min(context->max, val + tolerance),
@@ -124,16 +133,16 @@ static void test_bad_brightness(struct context *context)
{
int val;
/* First write some sane value */
- backlight_write(context->max / 2, "brightness");
+ backlight_write(context->max / 2, "brightness", context);
/* Writing invalid values should fail and not change the value */
- igt_assert_lt(backlight_write(-1, "brightness"), 0);
- backlight_read(&val, "brightness");
+ igt_assert_lt(backlight_write(-1, "brightness", context), 0);
+ backlight_read(&val, "brightness", context);
igt_assert_eq(val, context->max / 2);
- igt_assert_lt(backlight_write(context->max + 1, "brightness"), 0);
- backlight_read(&val, "brightness");
+ igt_assert_lt(backlight_write(context->max + 1, "brightness", context), 0);
+ backlight_read(&val, "brightness", context);
igt_assert_eq(val, context->max / 2);
- igt_assert_lt(backlight_write(INT_MAX, "brightness"), 0);
- backlight_read(&val, "brightness");
+ igt_assert_lt(backlight_write(INT_MAX, "brightness", context), 0);
+ backlight_read(&val, "brightness", context);
igt_assert_eq(val, context->max / 2);
}
@@ -182,16 +191,23 @@ test_fade_with_suspend(struct context *context, igt_output_t *output)
igt_main
{
struct context context = {0};
- int old;
+ int old, fd;
+ int count = 0;
+ int n_pipes = 0;
igt_display_t display;
igt_output_t *output;
struct igt_fb fb;
+ char buffer_n[PATH_MAX];
+ char *path_n[2];
+ char file_path_n[PATH_MAX] = "";
+ igt_output_t *outputs[IGT_MAX_PIPES * IGT_MAX_PIPES];
igt_fixture {
enum pipe pipe;
bool found = false;
char full_name[32] = {};
char *name;
+ int pipes[IGT_MAX_PIPES * IGT_MAX_PIPES];
drmModeModeInfo *mode;
igt_plane_t *primary;
@@ -202,53 +218,115 @@ igt_main
kmstest_set_vt_graphics_mode();
igt_display_require(&display, drm_open_driver(DRIVER_INTEL));
- /* Get the max value and skip the whole test if sysfs interface not available */
- igt_skip_on(backlight_read(&old, "brightness"));
- igt_assert(backlight_read(&context.max, "max_brightness") > -1);
-
- /* should be ../../cardX-$output */
- igt_assert_lt(12, readlink(BACKLIGHT_PATH "/device", full_name, sizeof(full_name) - 1));
- name = basename(full_name);
-
- for_each_pipe_with_valid_output(&display, pipe, output) {
+
+ for (int i = 0; i < 2; i++) {
+ if (i == 0)
+ path_n[i] = "intel_backlight";
+ else
+ {
+ for_each_pipe_with_valid_output(&display, pipe, output) {
+ snprintf(buffer_n, PATH_MAX, "card%i-%s-backlight", igt_device_get_card_index(display.drm_fd), igt_output_name(output));
+ snprintf(file_path_n, PATH_MAX, "%s/%s/brightness", BACKLIGHT_PATH, buffer_n);
+ fd = open(file_path_n, O_RDONLY);
+ if (fd == -1)
+ continue;
+ close(fd);
+ path_n[i] = buffer_n;
+ break;
+ }
+ }
+
+ /* should be ../../cardX-$output */
+ snprintf(file_path_n, PATH_MAX, "%s/%s/device", BACKLIGHT_PATH, path_n[i]);
+ igt_assert_lt(16, readlink(file_path_n, full_name, sizeof(full_name) - 1));
+ name = basename(full_name);
+
+ for_each_pipe_with_valid_output(&display, pipe, output) {
if (strcmp(name + 6, output->name))
continue;
found = true;
break;
- }
+ }
- igt_require_f(found,
- "Could not map backlight for \"%s\" to connected output\n",
- name);
+ igt_require_f(found,
+ "Could not map backlight for \"%s\" to connected output\n",
+ name);
- igt_output_set_pipe(output, pipe);
- mode = igt_output_get_mode(output);
+ igt_output_set_pipe(output, pipes);
+ mode = igt_output_get_mode(output);
- igt_create_pattern_fb(display.drm_fd,
- mode->hdisplay, mode->vdisplay,
- DRM_FORMAT_XRGB8888,
- DRM_FORMAT_MOD_LINEAR, &fb);
- primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
- igt_plane_set_fb(primary, &fb);
+ igt_create_pattern_fb(display.drm_fd,
+ mode->hdisplay, mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_MOD_LINEAR, &fb);
+ primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+ igt_plane_set_fb(primary, &fb);
+
+ igt_display_commit2(&display, display.is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
+ igt_pm_enable_sata_link_power_management();
+ count++;
+ }
- igt_display_commit2(&display, display.is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
- igt_pm_enable_sata_link_power_management();
+ }
+
+ igt_subtest_with_dynamic("basic-brightness") {
+ for (int j = 0; j < count; j++) {
+ igt_dynamic_f("connector-%i", j) {
+ strcpy(context.path, path_n[j]);
+ igt_skip_on(backlight_read(&old, "brightness", &context));
+ igt_assert(backlight_read(&context.max, "max_brightness", &context) > -1);
+ test_brightness(&context);
+ backlight_write(old, "brightness", &context);
+ }
+ }
+ }
+ igt_subtest_with_dynamic("bad-brightness") {
+ for (int j = 0; j < count; j++) {
+ igt_dynamic_f("connector-%i", j) {
+ strcpy(context.path, path_n[j]);
+ igt_skip_on(backlight_read(&old, "brightness", &context));
+ igt_assert(backlight_read(&context.max, "max_brightness", &context) > -1);
+ test_bad_brightness(&context);
+ }
+ }
}
- igt_subtest("basic-brightness")
- test_brightness(&context);
- igt_subtest("bad-brightness")
- test_bad_brightness(&context);
- igt_subtest("fade")
- test_fade(&context);
- igt_subtest("fade_with_dpms")
- test_fade_with_dpms(&context, output);
- igt_subtest("fade_with_suspend")
- test_fade_with_suspend(&context, output);
+ igt_subtest_with_dynamic("fade") {
+ for (int j = 0; j < count; j++) {
+ igt_dynamic_f("connector-%i", j) {
+ strcpy(context.path, path_n[j]);
+ igt_skip_on(backlight_read(&old, "brightness", &context));
+ igt_assert(backlight_read(&context.max, "max_brightness", &context) > -1);
+ test_fade(&context);
+ }
+ }
+ }
+
+ igt_subtest_with_dynamic("fade_with_dpms") {
+ for (int j = 0; j < count; j++) {
+ igt_dynamic_f("connector-%i", j) {
+ strcpy(context.path, path_n[j]);
+ igt_skip_on(backlight_read(&old, "brightness", &context));
+ igt_assert(backlight_read(&context.max, "max_brightness", &context) > -1);
+ test_fade_with_dpms(&context, output);
+ }
+ }
+ }
+
+ igt_subtest_with_dynamic("fade_with_suspend") {
+ for (int j = 0; j < count; j++) {
+ igt_dynamic_f("connector-%i", j) {
+ strcpy(context.path, path_n[j]);
+ igt_skip_on(backlight_read(&old, "brightness", &context));
+ igt_assert(backlight_read(&context.max, "max_brightness", &context) > -1);
+ test_fade_with_suspend(&context, output);
+ }
+ }
+ }
igt_fixture {
/* Restore old brightness */
- backlight_write(old, "brightness");
+ backlight_write(old, "brightness", &context);
igt_display_fini(&display);
igt_remove_fb(display.drm_fd, &fb);
--
1.9.1
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