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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * Test for panel uclass
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+ *
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+ * Copyright (c) 2018 Google, Inc
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+ * Written by Simon Glass <sjg@chromium.org>
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+ */
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+
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+#include <common.h>
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+#include <backlight.h>
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+#include <dm.h>
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+#include <panel.h>
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+#include <video.h>
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+#include <asm/gpio.h>
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+#include <asm/test.h>
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+#include <dm/test.h>
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+#include <test/ut.h>
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+#include <power/regulator.h>
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+
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+/* Basic test of the panel uclass */
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+static int dm_test_panel(struct unit_test_state *uts)
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+{
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+ struct udevice *dev, *pwm, *gpio, *reg;
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+ uint period_ns;
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+ uint duty_ns;
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+ bool enable;
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+ bool polarity;
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+
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+ ut_assertok(uclass_first_device_err(UCLASS_PANEL, &dev));
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+ ut_assertok(uclass_first_device_err(UCLASS_PWM, &pwm));
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+ ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
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+ ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", ®));
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+ ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
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+ &enable, &polarity));
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+ ut_asserteq(false, enable);
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+ ut_asserteq(false, regulator_get_enable(reg));
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+
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+ ut_assertok(panel_enable_backlight(dev));
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+ ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
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+ &enable, &polarity));
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+ ut_asserteq(1000, period_ns);
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+ ut_asserteq(170 * 1000 / 256, duty_ns);
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+ ut_asserteq(true, enable);
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+ ut_asserteq(false, polarity);
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+ ut_asserteq(1, sandbox_gpio_get_value(gpio, 1));
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+ ut_asserteq(true, regulator_get_enable(reg));
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+
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+ return 0;
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+}
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+DM_TEST(dm_test_panel, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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