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clk: Add KUnit tests for clks registered with struct clk_parent_data
Test that clks registered with 'struct clk_parent_data' work as intended and can find their parents. Cc: Christian Marangi <ansuelsmth@gmail.com> Cc: Brendan Higgins <brendan.higgins@linux.dev> Reviewed-by: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20240718210513.3801024-9-sboyd@kernel.org
This commit is contained in:
Stephen Boyd
parent
5776526beb
commit
274aff8711
@ -509,6 +509,8 @@ config CLK_KUNIT_TEST
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tristate "Basic Clock Framework Kunit Tests" if !KUNIT_ALL_TESTS
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depends on KUNIT
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default KUNIT_ALL_TESTS
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select OF_OVERLAY if OF
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select DTC
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help
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Kunit tests for the common clock framework.
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@ -2,7 +2,9 @@
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# common clock types
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obj-$(CONFIG_HAVE_CLK) += clk-devres.o clk-bulk.o clkdev.o
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obj-$(CONFIG_COMMON_CLK) += clk.o
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obj-$(CONFIG_CLK_KUNIT_TEST) += clk_test.o
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obj-$(CONFIG_CLK_KUNIT_TEST) += clk-test.o
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clk-test-y := clk_test.o \
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kunit_clk_parent_data_test.dtbo.o
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obj-$(CONFIG_COMMON_CLK) += clk-divider.o
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obj-$(CONFIG_COMMON_CLK) += clk-fixed-factor.o
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obj-$(CONFIG_COMMON_CLK) += clk-fixed-rate.o
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10
drivers/clk/clk_parent_data_test.h
Normal file
10
drivers/clk/clk_parent_data_test.h
Normal file
@ -0,0 +1,10 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _CLK_PARENT_DATA_TEST_H
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#define _CLK_PARENT_DATA_TEST_H
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#define CLK_PARENT_DATA_1MHZ_NAME "1mhz_fixed_legacy"
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#define CLK_PARENT_DATA_PARENT1 "parent_fwname"
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#define CLK_PARENT_DATA_PARENT2 "50"
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#define CLK_PARENT_DATA_50MHZ_NAME "50_clk"
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#endif
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@ -4,12 +4,19 @@
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*/
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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/* Needed for clk_hw_get_clk() */
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#include "clk.h"
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#include <kunit/clk.h>
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#include <kunit/of.h>
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#include <kunit/platform_device.h>
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#include <kunit/test.h>
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#include "clk_parent_data_test.h"
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static const struct clk_ops empty_clk_ops = { };
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#define DUMMY_CLOCK_INIT_RATE (42 * 1000 * 1000)
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@ -2659,6 +2666,448 @@ static struct kunit_suite clk_mux_no_reparent_test_suite = {
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.test_cases = clk_mux_no_reparent_test_cases,
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};
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struct clk_register_clk_parent_data_test_case {
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const char *desc;
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struct clk_parent_data pdata;
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};
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static void
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clk_register_clk_parent_data_test_case_to_desc(
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const struct clk_register_clk_parent_data_test_case *t, char *desc)
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{
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strcpy(desc, t->desc);
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}
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static const struct clk_register_clk_parent_data_test_case
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clk_register_clk_parent_data_of_cases[] = {
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{
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/*
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* Test that a clk registered with a struct device_node can
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* find a parent based on struct clk_parent_data::index.
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*/
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.desc = "clk_parent_data_of_index_test",
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.pdata.index = 0,
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},
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{
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/*
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* Test that a clk registered with a struct device_node can
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* find a parent based on struct clk_parent_data::fwname.
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*/
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.desc = "clk_parent_data_of_fwname_test",
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.pdata.fw_name = CLK_PARENT_DATA_PARENT1,
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},
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{
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/*
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* Test that a clk registered with a struct device_node can
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* find a parent based on struct clk_parent_data::name.
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*/
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.desc = "clk_parent_data_of_name_test",
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/* The index must be negative to indicate firmware not used */
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.pdata.index = -1,
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.pdata.name = CLK_PARENT_DATA_1MHZ_NAME,
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},
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{
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/*
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* Test that a clk registered with a struct device_node can
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* find a parent based on struct
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* clk_parent_data::{fw_name,name}.
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*/
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.desc = "clk_parent_data_of_fwname_name_test",
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.pdata.fw_name = CLK_PARENT_DATA_PARENT1,
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.pdata.name = "not_matching",
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},
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{
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/*
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* Test that a clk registered with a struct device_node can
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* find a parent based on struct clk_parent_data::{index,name}.
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* Index takes priority.
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*/
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.desc = "clk_parent_data_of_index_name_priority_test",
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.pdata.index = 0,
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.pdata.name = "not_matching",
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},
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{
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/*
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* Test that a clk registered with a struct device_node can
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* find a parent based on struct
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* clk_parent_data::{index,fwname,name}. The fw_name takes
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* priority over index and name.
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*/
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.desc = "clk_parent_data_of_index_fwname_name_priority_test",
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.pdata.index = 1,
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.pdata.fw_name = CLK_PARENT_DATA_PARENT1,
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.pdata.name = "not_matching",
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},
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};
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KUNIT_ARRAY_PARAM(clk_register_clk_parent_data_of_test, clk_register_clk_parent_data_of_cases,
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clk_register_clk_parent_data_test_case_to_desc)
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/**
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* struct clk_register_clk_parent_data_of_ctx - Context for clk_parent_data OF tests
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* @np: device node of clk under test
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* @hw: clk_hw for clk under test
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*/
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struct clk_register_clk_parent_data_of_ctx {
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struct device_node *np;
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struct clk_hw hw;
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};
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static int clk_register_clk_parent_data_of_test_init(struct kunit *test)
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{
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struct clk_register_clk_parent_data_of_ctx *ctx;
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KUNIT_ASSERT_EQ(test, 0,
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of_overlay_apply_kunit(test, kunit_clk_parent_data_test));
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ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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test->priv = ctx;
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ctx->np = of_find_compatible_node(NULL, NULL, "test,clk-parent-data");
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if (!ctx->np)
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return -ENODEV;
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of_node_put_kunit(test, ctx->np);
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return 0;
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}
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/*
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* Test that a clk registered with a struct device_node can find a parent based on
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* struct clk_parent_data when the hw member isn't set.
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*/
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static void clk_register_clk_parent_data_of_test(struct kunit *test)
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{
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struct clk_register_clk_parent_data_of_ctx *ctx = test->priv;
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struct clk_hw *parent_hw;
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const struct clk_register_clk_parent_data_test_case *test_param;
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struct clk_init_data init = { };
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struct clk *expected_parent, *actual_parent;
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->np);
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expected_parent = of_clk_get_kunit(test, ctx->np, 0);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, expected_parent);
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test_param = test->param_value;
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init.parent_data = &test_param->pdata;
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init.num_parents = 1;
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init.name = "parent_data_of_test_clk";
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init.ops = &clk_dummy_single_parent_ops;
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ctx->hw.init = &init;
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KUNIT_ASSERT_EQ(test, 0, of_clk_hw_register_kunit(test, ctx->np, &ctx->hw));
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parent_hw = clk_hw_get_parent(&ctx->hw);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent_hw);
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actual_parent = clk_hw_get_clk_kunit(test, parent_hw, __func__);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, actual_parent);
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KUNIT_EXPECT_TRUE(test, clk_is_match(expected_parent, actual_parent));
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}
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static struct kunit_case clk_register_clk_parent_data_of_test_cases[] = {
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KUNIT_CASE_PARAM(clk_register_clk_parent_data_of_test,
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clk_register_clk_parent_data_of_test_gen_params),
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{}
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};
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/*
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* Test suite for registering clks with struct clk_parent_data and a struct
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* device_node.
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*/
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static struct kunit_suite clk_register_clk_parent_data_of_suite = {
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.name = "clk_register_clk_parent_data_of",
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.init = clk_register_clk_parent_data_of_test_init,
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.test_cases = clk_register_clk_parent_data_of_test_cases,
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};
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/**
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* struct clk_register_clk_parent_data_device_ctx - Context for clk_parent_data device tests
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* @dev: device of clk under test
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* @hw: clk_hw for clk under test
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* @pdrv: driver to attach to find @dev
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*/
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struct clk_register_clk_parent_data_device_ctx {
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struct device *dev;
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struct clk_hw hw;
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struct platform_driver pdrv;
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};
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static inline struct clk_register_clk_parent_data_device_ctx *
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clk_register_clk_parent_data_driver_to_test_context(struct platform_device *pdev)
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{
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return container_of(to_platform_driver(pdev->dev.driver),
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struct clk_register_clk_parent_data_device_ctx, pdrv);
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}
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static int clk_register_clk_parent_data_device_probe(struct platform_device *pdev)
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{
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struct clk_register_clk_parent_data_device_ctx *ctx;
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ctx = clk_register_clk_parent_data_driver_to_test_context(pdev);
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ctx->dev = &pdev->dev;
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return 0;
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}
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static void clk_register_clk_parent_data_device_driver(struct kunit *test)
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{
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struct clk_register_clk_parent_data_device_ctx *ctx = test->priv;
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static const struct of_device_id match_table[] = {
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{ .compatible = "test,clk-parent-data" },
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{ }
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};
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ctx->pdrv.probe = clk_register_clk_parent_data_device_probe;
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ctx->pdrv.driver.of_match_table = match_table;
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ctx->pdrv.driver.name = __func__;
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ctx->pdrv.driver.owner = THIS_MODULE;
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KUNIT_ASSERT_EQ(test, 0, kunit_platform_driver_register(test, &ctx->pdrv));
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->dev);
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}
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static const struct clk_register_clk_parent_data_test_case
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clk_register_clk_parent_data_device_cases[] = {
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::index.
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*/
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.desc = "clk_parent_data_device_index_test",
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.pdata.index = 1,
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::fwname.
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*/
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.desc = "clk_parent_data_device_fwname_test",
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.pdata.fw_name = CLK_PARENT_DATA_PARENT2,
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::name.
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*/
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.desc = "clk_parent_data_device_name_test",
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/* The index must be negative to indicate firmware not used */
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.pdata.index = -1,
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.pdata.name = CLK_PARENT_DATA_50MHZ_NAME,
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::{fw_name,name}.
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*/
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.desc = "clk_parent_data_device_fwname_name_test",
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.pdata.fw_name = CLK_PARENT_DATA_PARENT2,
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.pdata.name = "not_matching",
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::{index,name}. Index
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* takes priority.
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*/
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.desc = "clk_parent_data_device_index_name_priority_test",
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.pdata.index = 1,
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.pdata.name = "not_matching",
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::{index,fwname,name}.
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* The fw_name takes priority over index and name.
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*/
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.desc = "clk_parent_data_device_index_fwname_name_priority_test",
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.pdata.index = 0,
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.pdata.fw_name = CLK_PARENT_DATA_PARENT2,
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.pdata.name = "not_matching",
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},
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};
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KUNIT_ARRAY_PARAM(clk_register_clk_parent_data_device_test,
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clk_register_clk_parent_data_device_cases,
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clk_register_clk_parent_data_test_case_to_desc)
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/*
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* Test that a clk registered with a struct device can find a parent based on
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* struct clk_parent_data when the hw member isn't set.
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*/
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static void clk_register_clk_parent_data_device_test(struct kunit *test)
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{
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struct clk_register_clk_parent_data_device_ctx *ctx;
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const struct clk_register_clk_parent_data_test_case *test_param;
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struct clk_hw *parent_hw;
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struct clk_init_data init = { };
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struct clk *expected_parent, *actual_parent;
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ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
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test->priv = ctx;
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clk_register_clk_parent_data_device_driver(test);
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expected_parent = clk_get_kunit(test, ctx->dev, "50");
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, expected_parent);
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test_param = test->param_value;
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init.parent_data = &test_param->pdata;
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init.num_parents = 1;
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init.name = "parent_data_device_test_clk";
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init.ops = &clk_dummy_single_parent_ops;
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ctx->hw.init = &init;
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KUNIT_ASSERT_EQ(test, 0, clk_hw_register_kunit(test, ctx->dev, &ctx->hw));
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parent_hw = clk_hw_get_parent(&ctx->hw);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent_hw);
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actual_parent = clk_hw_get_clk_kunit(test, parent_hw, __func__);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, actual_parent);
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KUNIT_EXPECT_TRUE(test, clk_is_match(expected_parent, actual_parent));
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}
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static const struct clk_register_clk_parent_data_test_case
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clk_register_clk_parent_data_device_hw_cases[] = {
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::hw.
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*/
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.desc = "clk_parent_data_device_hw_index_test",
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/* The index must be negative to indicate firmware not used */
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.pdata.index = -1,
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::hw when
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* struct clk_parent_data::fw_name is set.
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*/
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.desc = "clk_parent_data_device_hw_fwname_test",
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.pdata.fw_name = CLK_PARENT_DATA_PARENT2,
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::hw when struct
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* clk_parent_data::name is set.
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*/
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.desc = "clk_parent_data_device_hw_name_test",
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/* The index must be negative to indicate firmware not used */
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.pdata.index = -1,
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.pdata.name = CLK_PARENT_DATA_50MHZ_NAME,
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::hw when struct
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* clk_parent_data::{fw_name,name} are set.
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*/
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.desc = "clk_parent_data_device_hw_fwname_name_test",
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.pdata.fw_name = CLK_PARENT_DATA_PARENT2,
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.pdata.name = "not_matching",
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::hw when struct
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* clk_parent_data::index is set. The hw pointer takes
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* priority.
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*/
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.desc = "clk_parent_data_device_hw_index_priority_test",
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.pdata.index = 0,
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},
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{
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/*
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* Test that a clk registered with a struct device can find a
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* parent based on struct clk_parent_data::hw when
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* struct clk_parent_data::{index,fwname,name} are set.
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* The hw pointer takes priority over everything else.
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*/
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.desc = "clk_parent_data_device_hw_index_fwname_name_priority_test",
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.pdata.index = 0,
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.pdata.fw_name = CLK_PARENT_DATA_PARENT2,
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.pdata.name = "not_matching",
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},
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};
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KUNIT_ARRAY_PARAM(clk_register_clk_parent_data_device_hw_test,
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clk_register_clk_parent_data_device_hw_cases,
|
||||
clk_register_clk_parent_data_test_case_to_desc)
|
||||
|
||||
/*
|
||||
* Test that a clk registered with a struct device can find a
|
||||
* parent based on struct clk_parent_data::hw.
|
||||
*/
|
||||
static void clk_register_clk_parent_data_device_hw_test(struct kunit *test)
|
||||
{
|
||||
struct clk_register_clk_parent_data_device_ctx *ctx;
|
||||
const struct clk_register_clk_parent_data_test_case *test_param;
|
||||
struct clk_dummy_context *parent;
|
||||
struct clk_hw *parent_hw;
|
||||
struct clk_parent_data pdata = { };
|
||||
struct clk_init_data init = { };
|
||||
|
||||
ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
|
||||
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
|
||||
test->priv = ctx;
|
||||
|
||||
clk_register_clk_parent_data_device_driver(test);
|
||||
|
||||
parent = kunit_kzalloc(test, sizeof(*parent), GFP_KERNEL);
|
||||
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
|
||||
|
||||
parent_hw = &parent->hw;
|
||||
parent_hw->init = CLK_HW_INIT_NO_PARENT("parent-clk",
|
||||
&clk_dummy_rate_ops, 0);
|
||||
|
||||
KUNIT_ASSERT_EQ(test, 0, clk_hw_register_kunit(test, ctx->dev, parent_hw));
|
||||
|
||||
test_param = test->param_value;
|
||||
memcpy(&pdata, &test_param->pdata, sizeof(pdata));
|
||||
pdata.hw = parent_hw;
|
||||
init.parent_data = &pdata;
|
||||
init.num_parents = 1;
|
||||
init.ops = &clk_dummy_single_parent_ops;
|
||||
init.name = "parent_data_device_hw_test_clk";
|
||||
ctx->hw.init = &init;
|
||||
KUNIT_ASSERT_EQ(test, 0, clk_hw_register_kunit(test, ctx->dev, &ctx->hw));
|
||||
|
||||
KUNIT_EXPECT_PTR_EQ(test, parent_hw, clk_hw_get_parent(&ctx->hw));
|
||||
}
|
||||
|
||||
static struct kunit_case clk_register_clk_parent_data_device_test_cases[] = {
|
||||
KUNIT_CASE_PARAM(clk_register_clk_parent_data_device_test,
|
||||
clk_register_clk_parent_data_device_test_gen_params),
|
||||
KUNIT_CASE_PARAM(clk_register_clk_parent_data_device_hw_test,
|
||||
clk_register_clk_parent_data_device_hw_test_gen_params),
|
||||
{}
|
||||
};
|
||||
|
||||
static int clk_register_clk_parent_data_device_init(struct kunit *test)
|
||||
{
|
||||
KUNIT_ASSERT_EQ(test, 0,
|
||||
of_overlay_apply_kunit(test, kunit_clk_parent_data_test));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Test suite for registering clks with struct clk_parent_data and a struct
|
||||
* device.
|
||||
*/
|
||||
static struct kunit_suite clk_register_clk_parent_data_device_suite = {
|
||||
.name = "clk_register_clk_parent_data_device",
|
||||
.init = clk_register_clk_parent_data_device_init,
|
||||
.test_cases = clk_register_clk_parent_data_device_test_cases,
|
||||
};
|
||||
|
||||
kunit_test_suites(
|
||||
&clk_leaf_mux_set_rate_parent_test_suite,
|
||||
&clk_test_suite,
|
||||
@ -2671,8 +3120,10 @@ kunit_test_suites(
|
||||
&clk_range_test_suite,
|
||||
&clk_range_maximize_test_suite,
|
||||
&clk_range_minimize_test_suite,
|
||||
&clk_register_clk_parent_data_of_suite,
|
||||
&clk_register_clk_parent_data_device_suite,
|
||||
&clk_single_parent_mux_test_suite,
|
||||
&clk_uncached_test_suite
|
||||
&clk_uncached_test_suite,
|
||||
);
|
||||
MODULE_DESCRIPTION("Kunit tests for clk framework");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
||||
28
drivers/clk/kunit_clk_parent_data_test.dtso
Normal file
28
drivers/clk/kunit_clk_parent_data_test.dtso
Normal file
@ -0,0 +1,28 @@
|
||||
// SPDX-License-Identifier: GPL-2.0
|
||||
/dts-v1/;
|
||||
/plugin/;
|
||||
|
||||
#include "clk_parent_data_test.h"
|
||||
|
||||
&{/} {
|
||||
fixed_50: kunit-clock-50MHz {
|
||||
compatible = "fixed-clock";
|
||||
#clock-cells = <0>;
|
||||
clock-frequency = <50000000>;
|
||||
clock-output-names = CLK_PARENT_DATA_50MHZ_NAME;
|
||||
};
|
||||
|
||||
fixed_parent: kunit-clock-1MHz {
|
||||
compatible = "fixed-clock";
|
||||
#clock-cells = <0>;
|
||||
clock-frequency = <1000000>;
|
||||
clock-output-names = CLK_PARENT_DATA_1MHZ_NAME;
|
||||
};
|
||||
|
||||
kunit-clock-controller {
|
||||
compatible = "test,clk-parent-data";
|
||||
clocks = <&fixed_parent>, <&fixed_50>;
|
||||
clock-names = CLK_PARENT_DATA_PARENT1, CLK_PARENT_DATA_PARENT2;
|
||||
#clock-cells = <1>;
|
||||
};
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user