1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
4 */
5
6#include <common.h>
7#include <dm.h>
8#include <dm/test.h>
9#include <regmap.h>
10#include <reset.h>
11#include <syscon.h>
12#include <test/ut.h>
13#include <asm/test.h>
14#include <linux/bitops.h>
15
16/* The following values must match the device tree */
17#define TEST_RESET_REG 1
18#define TEST_RESET_ASSERT_HIGH 0
19#define TEST_RESET_ASSERT (TEST_RESET_ASSERT_HIGH ? (u32)-1 : (u32)0)
20#define TEST_RESET_DEASSERT (~TEST_RESET_ASSERT)
21
22#define TEST_RESET_VALID 15
23#define TEST_RESET_NOMASK 30
24#define TEST_RESET_OUTOFRANGE 60
25
26static int dm_test_syscon_reset(struct unit_test_state *uts)
27{
28	struct regmap *map;
29	struct reset_ctl rst;
30	struct udevice *reset;
31	struct udevice *syscon;
32	struct udevice *syscon_reset;
33	uint reg;
34
35	ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "syscon-reset-test",
36					      &reset));
37	ut_assertok(uclass_get_device_by_name(UCLASS_SYSCON, "syscon@0",
38					      &syscon));
39	ut_assertok(uclass_get_device_by_name(UCLASS_RESET, "syscon-reset",
40					      &syscon_reset));
41	ut_assertok_ptr((map = syscon_get_regmap(syscon)));
42
43	ut_asserteq(-EINVAL, reset_get_by_name(reset, "no_mask", &rst));
44	ut_asserteq(-EINVAL, reset_get_by_name(reset, "out_of_range", &rst));
45	ut_assertok(reset_get_by_name(reset, "valid", &rst));
46
47	sandbox_set_enable_memio(true);
48	ut_assertok(regmap_write(map, TEST_RESET_REG, TEST_RESET_DEASSERT));
49	ut_assertok(reset_assert(&rst));
50	ut_assertok(regmap_read(map, TEST_RESET_REG, &reg));
51	ut_asserteq(TEST_RESET_DEASSERT ^ BIT(TEST_RESET_VALID), reg);
52
53	ut_assertok(reset_deassert(&rst));
54	ut_assertok(regmap_read(map, TEST_RESET_REG, &reg));
55	ut_asserteq(TEST_RESET_DEASSERT, reg);
56
57	return 0;
58}
59DM_TEST(dm_test_syscon_reset, UT_TESTF_SCAN_FDT);
60