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343 lines
8.0 KiB
343 lines
8.0 KiB
/*
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* Copyright 2018 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "igt.h"
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#include "drmtest.h"
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#include "igt_kms.h"
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#include <limits.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include <time.h>
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#define BACKLIGHT_PATH "/sys/class/backlight/amdgpu_bl0"
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typedef struct data {
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igt_display_t display;
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int drm_fd;
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int debugfs;
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uint32_t output_id;
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uint32_t abm_prop_id;
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} data_t;
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static int read_current_backlight_pwm(int debugfs_dir)
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{
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char buf[20];
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igt_debugfs_simple_read(debugfs_dir, "amdgpu_current_backlight_pwm",
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buf, sizeof(buf));
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return strtol(buf, NULL, 0);
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}
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static int read_target_backlight_pwm(int debugfs_dir)
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{
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char buf[20];
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igt_debugfs_simple_read(debugfs_dir, "amdgpu_target_backlight_pwm",
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buf, sizeof(buf));
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return strtol(buf, NULL, 0);
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}
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static int backlight_write_brightness(int value)
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{
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int fd;
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char full[PATH_MAX];
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char src[64];
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int len;
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igt_assert(snprintf(full, PATH_MAX, "%s/%s", BACKLIGHT_PATH, "brightness") < PATH_MAX);
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fd = open(full, O_WRONLY);
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if (fd == -1)
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return -errno;
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len = snprintf(src, sizeof(src), "%i", value);
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len = write(fd, src, len);
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close(fd);
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if (len < 0)
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return len;
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return 0;
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}
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static void set_abm_level(data_t *data, int level)
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{
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uint32_t type = DRM_MODE_OBJECT_CONNECTOR;
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int ret;
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ret = drmModeObjectSetProperty(data->drm_fd, data->output_id, type,
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data->abm_prop_id, level);
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igt_assert_eq(ret, 0);
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}
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static int backlight_read_max_brightness(int *result)
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{
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int fd;
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char full[PATH_MAX];
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char dst[64];
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int r, e;
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igt_assert(snprintf(full, PATH_MAX, "%s/%s", BACKLIGHT_PATH, "max_brightness") < PATH_MAX);
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fd = open(full, O_RDONLY);
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if (fd == -1)
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return -errno;
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r = read(fd, dst, sizeof(dst));
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e = errno;
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close(fd);
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if (r < 0)
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return -e;
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errno = 0;
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*result = strtol(dst, NULL, 10);
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return errno;
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}
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static void test_init(data_t *data)
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{
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igt_display_t *display = &data->display;
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int ret, i;
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char buf[20];
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bool abm_prop_exists;
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uint32_t type = DRM_MODE_OBJECT_CONNECTOR;
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ret = igt_debugfs_simple_read(data->debugfs, "amdgpu_current_backlight_pwm",
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buf, sizeof(buf));
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if (ret < 0)
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igt_skip("No current backlight debugfs entry.\n");
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ret = igt_debugfs_simple_read(data->debugfs, "amdgpu_target_backlight_pwm",
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buf, sizeof(buf));
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if (ret < 0)
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igt_skip("No target backlight debugfs entry.\n");
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abm_prop_exists = false;
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for (i = 0; i < display->n_outputs; i++) {
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data->output_id = display->outputs[i].id;
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abm_prop_exists = kmstest_get_property(
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data->drm_fd, data->output_id, type, "abm level",
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&data->abm_prop_id, NULL, NULL);
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if (abm_prop_exists)
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break;
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}
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if (!abm_prop_exists)
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igt_skip("No abm level property on any connector.\n");
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}
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static void backlight_dpms_cycle(data_t *data, igt_output_t *output)
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{
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int ret;
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int max_brightness;
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int pwm_1, pwm_2;
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ret = backlight_read_max_brightness(&max_brightness);
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igt_assert_eq(ret, 0);
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set_abm_level(data, 0);
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backlight_write_brightness(max_brightness / 2);
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usleep(100000);
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pwm_1 = read_target_backlight_pwm(data->debugfs);
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kmstest_set_connector_dpms(data->drm_fd, output->config.connector, DRM_MODE_DPMS_OFF);
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kmstest_set_connector_dpms(data->drm_fd, output->config.connector, DRM_MODE_DPMS_ON);
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usleep(100000);
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pwm_2 = read_target_backlight_pwm(data->debugfs);
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igt_assert_eq(pwm_1, pwm_2);
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}
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static void backlight_monotonic_basic(data_t *data)
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{
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int ret;
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int max_brightness;
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int prev_pwm, pwm;
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int brightness_step;
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int brightness;
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ret = backlight_read_max_brightness(&max_brightness);
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igt_assert_eq(ret, 0);
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brightness_step = max_brightness / 10;
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set_abm_level(data, 0);
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backlight_write_brightness(max_brightness);
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usleep(100000);
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prev_pwm = read_target_backlight_pwm(data->debugfs);
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for (brightness = max_brightness - brightness_step;
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brightness > 0;
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brightness -= brightness_step) {
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backlight_write_brightness(brightness);
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usleep(100000);
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pwm = read_target_backlight_pwm(data->debugfs);
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igt_assert(pwm < prev_pwm);
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prev_pwm = pwm;
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}
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}
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static void backlight_monotonic_abm(data_t *data)
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{
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int ret, i;
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int max_brightness;
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int prev_pwm, pwm;
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int brightness_step;
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int brightness;
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ret = backlight_read_max_brightness(&max_brightness);
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igt_assert_eq(ret, 0);
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brightness_step = max_brightness / 10;
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for (i = 1; i < 5; i++) {
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set_abm_level(data, i);
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backlight_write_brightness(max_brightness);
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usleep(100000);
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prev_pwm = read_target_backlight_pwm(data->debugfs);
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for (brightness = max_brightness - brightness_step;
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brightness > 0;
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brightness -= brightness_step) {
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backlight_write_brightness(brightness);
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usleep(100000);
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pwm = read_target_backlight_pwm(data->debugfs);
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igt_assert(pwm < prev_pwm);
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prev_pwm = pwm;
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}
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}
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}
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static void abm_enabled(data_t *data)
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{
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int ret, i;
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int max_brightness;
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int pwm, prev_pwm, pwm_without_abm;
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ret = backlight_read_max_brightness(&max_brightness);
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igt_assert_eq(ret, 0);
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set_abm_level(data, 0);
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backlight_write_brightness(max_brightness);
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usleep(100000);
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prev_pwm = read_target_backlight_pwm(data->debugfs);
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pwm_without_abm = prev_pwm;
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for (i = 1; i < 5; i++) {
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set_abm_level(data, i);
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usleep(100000);
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pwm = read_target_backlight_pwm(data->debugfs);
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igt_assert(pwm <= prev_pwm);
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igt_assert(pwm < pwm_without_abm);
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prev_pwm = pwm;
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}
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}
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static void abm_gradual(data_t *data)
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{
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int ret, i;
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int convergence_delay = 15;
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int prev_pwm, pwm, curr;
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int max_brightness;
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ret = backlight_read_max_brightness(&max_brightness);
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igt_assert_eq(ret, 0);
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set_abm_level(data, 0);
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backlight_write_brightness(max_brightness);
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sleep(convergence_delay);
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prev_pwm = read_target_backlight_pwm(data->debugfs);
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curr = read_current_backlight_pwm(data->debugfs);
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igt_assert_eq(prev_pwm, curr);
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set_abm_level(data, 4);
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for (i = 0; i < 10; i++) {
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usleep(100000);
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pwm = read_current_backlight_pwm(data->debugfs);
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igt_assert(pwm < prev_pwm);
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prev_pwm = pwm;
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}
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sleep(convergence_delay - 1);
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prev_pwm = read_target_backlight_pwm(data->debugfs);
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curr = read_current_backlight_pwm(data->debugfs);
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igt_assert_eq(prev_pwm, curr);
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}
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igt_main
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{
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data_t data = { 0 };
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enum pipe pipe;
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igt_output_t *output;
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igt_skip_on_simulation();
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igt_fixture {
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data.drm_fd = drm_open_driver_master(DRIVER_AMDGPU);
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if (data.drm_fd == -1)
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igt_skip("Not an amdgpu driver.\n");
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data.debugfs = igt_debugfs_dir(data.drm_fd);
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kmstest_set_vt_graphics_mode();
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igt_display_require(&data.display, data.drm_fd);
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test_init(&data);
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for_each_pipe_with_valid_output(&data.display, pipe, output) {
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if (output->config.connector->connector_type == DRM_MODE_CONNECTOR_eDP)
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break;
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}
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}
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igt_subtest("dpms_cycle")
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backlight_dpms_cycle(&data, output);
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igt_subtest("backlight_monotonic_basic")
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backlight_monotonic_basic(&data);
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igt_subtest("backlight_monotonic_abm")
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backlight_monotonic_abm(&data);
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igt_subtest("abm_enabled")
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abm_enabled(&data);
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igt_subtest("abm_gradual")
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abm_gradual(&data);
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igt_fixture {
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igt_display_fini(&data.display);
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}
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}
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