1 // SPDX-License-Identifier: GPL-2.0
3  * KUnit test for clk fixed rate basic type
5 #include <linux/clk.h>
6 #include <linux/clk-provider.h>
11 #include <kunit/clk.h>
17 #include "clk-fixed-rate_test.h"
20  * struct clk_hw_fixed_rate_kunit_params - Parameters to pass to __clk_hw_register_fixed_rate()
21  * @dev: device registering clk
22  * @np: device_node of device registering clk
23  * @name: name of clk
24  * @parent_name: parent name of clk
25  * @parent_hw: clk_hw pointer to parent of clk
26  * @parent_data: parent_data describing parent of clk
27  * @flags: clk framework flags
28  * @fixed_rate: frequency of clk
29  * @fixed_accuracy: accuracy of clk
30  * @clk_fixed_flags: fixed rate specific clk flags
51 	hw = __clk_hw_register_fixed_rate(params->dev, params->np,  in clk_hw_register_fixed_rate_kunit_init()
52 					  params->name,  in clk_hw_register_fixed_rate_kunit_init()
53 					  params->parent_name,  in clk_hw_register_fixed_rate_kunit_init()
54 					  params->parent_hw,  in clk_hw_register_fixed_rate_kunit_init()
55 					  params->parent_data,  in clk_hw_register_fixed_rate_kunit_init()
56 					  params->flags,  in clk_hw_register_fixed_rate_kunit_init()
57 					  params->fixed_rate,  in clk_hw_register_fixed_rate_kunit_init()
58 					  params->fixed_accuracy,  in clk_hw_register_fixed_rate_kunit_init()
59 					  params->clk_fixed_flags,  in clk_hw_register_fixed_rate_kunit_init()
64 	res->data = hw;  in clk_hw_register_fixed_rate_kunit_init()
71 	struct clk_hw *hw = res->data;  in clk_hw_register_fixed_rate_kunit_exit()
77  * clk_hw_register_fixed_rate_kunit() - Test managed __clk_hw_register_fixed_rate()
94 		return ERR_PTR(-EINVAL);  in clk_hw_register_fixed_rate_kunit()
100  * clk_hw_unregister_fixed_rate_kunit() - Test managed clk_hw_unregister_fixed_rate()
102  * @hw: fixed rate clk to unregister upon test completion
114 		return -ENOMEM;  in clk_hw_unregister_fixed_rate_kunit()
120  * Test that clk_get_rate() on a fixed rate clk registered with
126 	struct clk *clk;  in clk_fixed_rate_rate_test()  local
129 	hw = clk_hw_register_fixed_rate(NULL, "test-fixed-rate", NULL, 0, fixed_rate);  in clk_fixed_rate_rate_test()
133 	clk = clk_hw_get_clk_prepared_enabled_kunit(test, hw, __func__);  in clk_fixed_rate_rate_test()
134 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);  in clk_fixed_rate_rate_test()
136 	KUNIT_EXPECT_EQ(test, fixed_rate, clk_get_rate(clk));  in clk_fixed_rate_rate_test()
140  * Test that clk_get_accuracy() on a fixed rate clk registered via
146 	struct clk *clk;  in clk_fixed_rate_accuracy_test()  local
149 	hw = clk_hw_register_fixed_rate_with_accuracy(NULL, "test-fixed-rate",  in clk_fixed_rate_accuracy_test()
155 	clk = clk_hw_get_clk_kunit(test, hw, __func__);  in clk_fixed_rate_accuracy_test()
156 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);  in clk_fixed_rate_accuracy_test()
158 	KUNIT_EXPECT_EQ(test, fixed_accuracy, clk_get_accuracy(clk));  in clk_fixed_rate_accuracy_test()
161 /* Test suite for a fixed rate clk without any parent */
174  * Test that clk_get_parent() on a fixed rate clk gets the proper parent.
179 	struct clk *expected_parent, *actual_parent;  in clk_fixed_rate_parent_test()
180 	struct clk *clk;  in clk_fixed_rate_parent_test()  local
181 	const char *parent_name = "test-fixed-rate-parent";  in clk_fixed_rate_parent_test()
193 	hw = clk_hw_register_fixed_rate(NULL, "test-fixed-rate", parent_name, 0, 0);  in clk_fixed_rate_parent_test()
197 	clk = clk_hw_get_clk_kunit(test, hw, __func__);  in clk_fixed_rate_parent_test()
198 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);  in clk_fixed_rate_parent_test()
200 	actual_parent = clk_get_parent(clk);  in clk_fixed_rate_parent_test()
205  * Test that clk_get_rate() on a fixed rate clk ignores the parent rate.
210 	struct clk *clk;  in clk_fixed_rate_parent_rate_test()  local
213 	const char *parent_name = "test-fixed-rate-parent";  in clk_fixed_rate_parent_rate_test()
223 	hw = clk_hw_register_fixed_rate(NULL, "test-fixed-rate", parent_name, 0,  in clk_fixed_rate_parent_rate_test()
228 	clk = clk_hw_get_clk_prepared_enabled_kunit(test, hw, __func__);  in clk_fixed_rate_parent_rate_test()
229 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);  in clk_fixed_rate_parent_rate_test()
231 	KUNIT_EXPECT_EQ(test, expected_rate, clk_get_rate(clk));  in clk_fixed_rate_parent_rate_test()
235  * Test that clk_get_accuracy() on a fixed rate clk ignores the parent accuracy.
240 	struct clk *clk;  in clk_fixed_rate_parent_accuracy_test()  local
243 	const char *parent_name = "test-fixed-rate-parent";  in clk_fixed_rate_parent_accuracy_test()
253 	hw = clk_hw_register_fixed_rate_with_accuracy(NULL, "test-fixed-rate",  in clk_fixed_rate_parent_accuracy_test()
259 	clk = clk_hw_get_clk_kunit(test, hw, __func__);  in clk_fixed_rate_parent_accuracy_test()
260 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);  in clk_fixed_rate_parent_accuracy_test()
262 	KUNIT_EXPECT_EQ(test, expected_accuracy, clk_get_accuracy(clk));  in clk_fixed_rate_parent_accuracy_test()
265 /* Test suite for a fixed rate clk with a parent */
287 	return container_of(to_platform_driver(pdev->dev.driver),  in pdev_to_clk_fixed_rate_of_test_context()
293  * Test that of_fixed_clk_setup() registers a fixed rate clk with the proper
298 	struct clk_fixed_rate_of_test_context *ctx = test->priv;  in clk_fixed_rate_of_probe_test()
299 	struct device *dev = ctx->dev;  in clk_fixed_rate_of_probe_test()
300 	struct clk *clk;  in clk_fixed_rate_of_probe_test()  local
302 	clk = clk_get_kunit(test, dev, NULL);  in clk_fixed_rate_of_probe_test()
303 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);  in clk_fixed_rate_of_probe_test()
305 	KUNIT_ASSERT_EQ(test, 0, clk_prepare_enable_kunit(test, clk));  in clk_fixed_rate_of_probe_test()
306 	KUNIT_EXPECT_EQ(test, TEST_FIXED_FREQUENCY, clk_get_rate(clk));  in clk_fixed_rate_of_probe_test()
310  * Test that of_fixed_clk_setup() registers a fixed rate clk with the proper
315 	struct clk_fixed_rate_of_test_context *ctx = test->priv;  in clk_fixed_rate_of_accuracy_test()
316 	struct device *dev = ctx->dev;  in clk_fixed_rate_of_accuracy_test()
317 	struct clk *clk;  in clk_fixed_rate_of_accuracy_test()  local
319 	clk = clk_get_kunit(test, dev, NULL);  in clk_fixed_rate_of_accuracy_test()
320 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);  in clk_fixed_rate_of_accuracy_test()
322 	KUNIT_EXPECT_EQ(test, TEST_FIXED_ACCURACY, clk_get_accuracy(clk));  in clk_fixed_rate_of_accuracy_test()
336 	ctx->dev = &pdev->dev;  in clk_fixed_rate_of_test_probe()
337 	complete(&ctx->probed);  in clk_fixed_rate_of_test_probe()
346 		{ .compatible = "test,single-clk-consumer" },  in clk_fixed_rate_of_init()
354 	test->priv = ctx;  in clk_fixed_rate_of_init()
356 	ctx->pdrv.probe = clk_fixed_rate_of_test_probe;  in clk_fixed_rate_of_init()
357 	ctx->pdrv.driver.of_match_table = match_table;  in clk_fixed_rate_of_init()
358 	ctx->pdrv.driver.name = __func__;  in clk_fixed_rate_of_init()
359 	ctx->pdrv.driver.owner = THIS_MODULE;  in clk_fixed_rate_of_init()
360 	init_completion(&ctx->probed);  in clk_fixed_rate_of_init()
362 	KUNIT_ASSERT_EQ(test, 0, kunit_platform_driver_register(test, &ctx->pdrv));  in clk_fixed_rate_of_init()
363 	KUNIT_ASSERT_NE(test, 0, wait_for_completion_timeout(&ctx->probed, HZ));  in clk_fixed_rate_of_init()
380 MODULE_DESCRIPTION("KUnit test for clk fixed rate basic type");