ba3573f87f
`DEVICE_DT_GET()` guarantees that the `dev` pointer can never be `NULL`, the check is therefore redundant, remove it. Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* Copyright 2021 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/device.h>
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#include <zephyr/devicetree.h>
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#include <zephyr/drivers/syscon.h>
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#include <zephyr/ztest.h>
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#include <zephyr/linker/devicetree_regions.h>
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#define RES_SECT LINKER_DT_NODE_REGION_NAME(DT_NODELABEL(res))
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uint8_t var_in_res0[DT_REG_SIZE(DT_NODELABEL(syscon))] __attribute((__section__(RES_SECT)));
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ZTEST(syscon, test_size)
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{
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const struct device *const dev = DEVICE_DT_GET(DT_NODELABEL(syscon));
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const size_t expected_size = DT_REG_SIZE(DT_NODELABEL(syscon));
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size_t size;
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zassert_ok(syscon_get_size(dev, &size));
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zassert_equal(size, expected_size, "size(%zu) != expected_size(%zu)", size,
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expected_size);
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}
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ZTEST(syscon, test_out_of_bounds)
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{
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const struct device *const dev = DEVICE_DT_GET(DT_NODELABEL(syscon));
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uint32_t val;
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zassert_equal(syscon_read_reg(dev, DT_REG_SIZE(DT_NODELABEL(syscon)), &val), -EINVAL);
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zassert_equal(syscon_write_reg(dev, DT_REG_SIZE(DT_NODELABEL(syscon)), val), -EINVAL);
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}
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ZTEST(syscon, test_read)
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{
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const struct device *const dev = DEVICE_DT_GET(DT_NODELABEL(syscon));
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uintptr_t base_addr;
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uint32_t val;
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zassert_ok(syscon_get_base(dev, &base_addr));
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for (size_t i = 0; i < ARRAY_SIZE(var_in_res0); ++i) {
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((uint8_t *)base_addr)[i] = i;
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zassert_ok(syscon_read_reg(dev, i, &val));
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zassert_equal(i, val);
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}
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}
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ZTEST(syscon, test_write)
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{
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const struct device *const dev = DEVICE_DT_GET(DT_NODELABEL(syscon));
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uintptr_t base_addr;
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zassert_ok(syscon_get_base(dev, &base_addr));
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for (uint32_t i = 0; i < ARRAY_SIZE(var_in_res0); ++i) {
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zassert_ok(syscon_write_reg(dev, i, i));
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zassert_equal(((uint8_t *)base_addr)[i], i);
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}
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}
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ZTEST_SUITE(syscon, NULL, NULL, NULL, NULL, NULL);
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