#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <kunit/test.h>
static void clk_gate_register_test_dev(struct kunit *test)
{
struct clk_hw *ret;
struct platform_device *pdev;
pdev = platform_device_register_simple("test_gate_device", -1, NULL, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev);
ret = clk_hw_register_gate(&pdev->dev, "test_gate", NULL, 0, NULL,
0, 0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ret);
KUNIT_EXPECT_STREQ(test, "test_gate", clk_hw_get_name(ret));
KUNIT_EXPECT_EQ(test, 0UL, clk_hw_get_flags(ret));
clk_hw_unregister_gate(ret);
platform_device_put(pdev);
}
static void clk_gate_register_test_parent_names(struct kunit *test)
{
struct clk_hw *parent;
struct clk_hw *ret;
parent = clk_hw_register_fixed_rate(NULL, "test_parent", NULL, 0,
1000000);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
ret = clk_hw_register_gate(NULL, "test_gate", "test_parent", 0, NULL,
0, 0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ret);
KUNIT_EXPECT_PTR_EQ(test, parent, clk_hw_get_parent(ret));
clk_hw_unregister_gate(ret);
clk_hw_unregister_fixed_rate(parent);
}
static void clk_gate_register_test_parent_data(struct kunit *test)
{
struct clk_hw *parent;
struct clk_hw *ret;
struct clk_parent_data pdata = { };
parent = clk_hw_register_fixed_rate(NULL, "test_parent", NULL, 0,
1000000);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
pdata.hw = parent;
ret = clk_hw_register_gate_parent_data(NULL, "test_gate", &pdata, 0,
NULL, 0, 0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ret);
KUNIT_EXPECT_PTR_EQ(test, parent, clk_hw_get_parent(ret));
clk_hw_unregister_gate(ret);
clk_hw_unregister_fixed_rate(parent);
}
static void clk_gate_register_test_parent_data_legacy(struct kunit *test)
{
struct clk_hw *parent;
struct clk_hw *ret;
struct clk_parent_data pdata = { };
parent = clk_hw_register_fixed_rate(NULL, "test_parent", NULL, 0,
1000000);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
pdata.name = "test_parent";
ret = clk_hw_register_gate_parent_data(NULL, "test_gate", &pdata, 0,
NULL, 0, 0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ret);
KUNIT_EXPECT_PTR_EQ(test, parent, clk_hw_get_parent(ret));
clk_hw_unregister_gate(ret);
clk_hw_unregister_fixed_rate(parent);
}
static void clk_gate_register_test_parent_hw(struct kunit *test)
{
struct clk_hw *parent;
struct clk_hw *ret;
parent = clk_hw_register_fixed_rate(NULL, "test_parent", NULL, 0,
1000000);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
ret = clk_hw_register_gate_parent_hw(NULL, "test_gate", parent, 0, NULL,
0, 0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ret);
KUNIT_EXPECT_PTR_EQ(test, parent, clk_hw_get_parent(ret));
clk_hw_unregister_gate(ret);
clk_hw_unregister_fixed_rate(parent);
}
static void clk_gate_register_test_hiword_invalid(struct kunit *test)
{
struct clk_hw *ret;
ret = clk_hw_register_gate(NULL, "test_gate", NULL, 0, NULL,
20, CLK_GATE_HIWORD_MASK, NULL);
KUNIT_EXPECT_TRUE(test, IS_ERR(ret));
}
static struct kunit_case clk_gate_register_test_cases[] = {
KUNIT_CASE(clk_gate_register_test_dev),
KUNIT_CASE(clk_gate_register_test_parent_names),
KUNIT_CASE(clk_gate_register_test_parent_data),
KUNIT_CASE(clk_gate_register_test_parent_data_legacy),
KUNIT_CASE(clk_gate_register_test_parent_hw),
KUNIT_CASE(clk_gate_register_test_hiword_invalid),
{}
};
static struct kunit_suite clk_gate_register_test_suite = {
.name = "clk-gate-register-test",
.test_cases = clk_gate_register_test_cases,
};
struct clk_gate_test_context {
void __iomem *fake_mem;
struct clk_hw *hw;
struct clk_hw *parent;
__le32 fake_reg;
};
static struct clk_gate_test_context *clk_gate_test_alloc_ctx(struct kunit *test)
{
struct clk_gate_test_context *ctx;
test->priv = ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
ctx->fake_mem = (void __force __iomem *)&ctx->fake_reg;
return ctx;
}
static void clk_gate_test_parent_rate(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
struct clk_hw *parent = ctx->parent;
struct clk_hw *hw = ctx->hw;
unsigned long prate = clk_hw_get_rate(parent);
unsigned long rate = clk_hw_get_rate(hw);
KUNIT_EXPECT_EQ(test, prate, rate);
}
static void clk_gate_test_enable(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
struct clk_hw *parent = ctx->parent;
struct clk_hw *hw = ctx->hw;
struct clk *clk = hw->clk;
u32 enable_val = BIT(5);
KUNIT_ASSERT_EQ(test, clk_prepare_enable(clk), 0);
KUNIT_EXPECT_EQ(test, enable_val, le32_to_cpu(ctx->fake_reg));
KUNIT_EXPECT_TRUE(test, clk_hw_is_enabled(hw));
KUNIT_EXPECT_TRUE(test, clk_hw_is_prepared(hw));
KUNIT_EXPECT_TRUE(test, clk_hw_is_enabled(parent));
KUNIT_EXPECT_TRUE(test, clk_hw_is_prepared(parent));
}
static void clk_gate_test_disable(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
struct clk_hw *parent = ctx->parent;
struct clk_hw *hw = ctx->hw;
struct clk *clk = hw->clk;
u32 enable_val = BIT(5);
u32 disable_val = 0;
KUNIT_ASSERT_EQ(test, clk_prepare_enable(clk), 0);
KUNIT_ASSERT_EQ(test, enable_val, le32_to_cpu(ctx->fake_reg));
clk_disable_unprepare(clk);
KUNIT_EXPECT_EQ(test, disable_val, le32_to_cpu(ctx->fake_reg));
KUNIT_EXPECT_FALSE(test, clk_hw_is_enabled(hw));
KUNIT_EXPECT_FALSE(test, clk_hw_is_prepared(hw));
KUNIT_EXPECT_FALSE(test, clk_hw_is_enabled(parent));
KUNIT_EXPECT_FALSE(test, clk_hw_is_prepared(parent));
}
static struct kunit_case clk_gate_test_cases[] = {
KUNIT_CASE(clk_gate_test_parent_rate),
KUNIT_CASE(clk_gate_test_enable),
KUNIT_CASE(clk_gate_test_disable),
{}
};
static int clk_gate_test_init(struct kunit *test)
{
struct clk_hw *parent;
struct clk_hw *hw;
struct clk_gate_test_context *ctx;
ctx = clk_gate_test_alloc_ctx(test);
parent = clk_hw_register_fixed_rate(NULL, "test_parent", NULL, 0,
2000000);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
hw = clk_hw_register_gate_parent_hw(NULL, "test_gate", parent, 0,
ctx->fake_mem, 5, 0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, hw);
ctx->hw = hw;
ctx->parent = parent;
return 0;
}
static void clk_gate_test_exit(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
clk_hw_unregister_gate(ctx->hw);
clk_hw_unregister_fixed_rate(ctx->parent);
}
static struct kunit_suite clk_gate_test_suite = {
.name = "clk-gate-test",
.init = clk_gate_test_init,
.exit = clk_gate_test_exit,
.test_cases = clk_gate_test_cases,
};
static void clk_gate_test_invert_enable(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
struct clk_hw *parent = ctx->parent;
struct clk_hw *hw = ctx->hw;
struct clk *clk = hw->clk;
u32 enable_val = 0;
KUNIT_ASSERT_EQ(test, clk_prepare_enable(clk), 0);
KUNIT_EXPECT_EQ(test, enable_val, le32_to_cpu(ctx->fake_reg));
KUNIT_EXPECT_TRUE(test, clk_hw_is_enabled(hw));
KUNIT_EXPECT_TRUE(test, clk_hw_is_prepared(hw));
KUNIT_EXPECT_TRUE(test, clk_hw_is_enabled(parent));
KUNIT_EXPECT_TRUE(test, clk_hw_is_prepared(parent));
}
static void clk_gate_test_invert_disable(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
struct clk_hw *parent = ctx->parent;
struct clk_hw *hw = ctx->hw;
struct clk *clk = hw->clk;
u32 enable_val = 0;
u32 disable_val = BIT(15);
KUNIT_ASSERT_EQ(test, clk_prepare_enable(clk), 0);
KUNIT_ASSERT_EQ(test, enable_val, le32_to_cpu(ctx->fake_reg));
clk_disable_unprepare(clk);
KUNIT_EXPECT_EQ(test, disable_val, le32_to_cpu(ctx->fake_reg));
KUNIT_EXPECT_FALSE(test, clk_hw_is_enabled(hw));
KUNIT_EXPECT_FALSE(test, clk_hw_is_prepared(hw));
KUNIT_EXPECT_FALSE(test, clk_hw_is_enabled(parent));
KUNIT_EXPECT_FALSE(test, clk_hw_is_prepared(parent));
}
static struct kunit_case clk_gate_test_invert_cases[] = {
KUNIT_CASE(clk_gate_test_invert_enable),
KUNIT_CASE(clk_gate_test_invert_disable),
{}
};
static int clk_gate_test_invert_init(struct kunit *test)
{
struct clk_hw *parent;
struct clk_hw *hw;
struct clk_gate_test_context *ctx;
ctx = clk_gate_test_alloc_ctx(test);
parent = clk_hw_register_fixed_rate(NULL, "test_parent", NULL, 0,
2000000);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
ctx->fake_reg = cpu_to_le32(BIT(15));
hw = clk_hw_register_gate_parent_hw(NULL, "test_gate", parent, 0,
ctx->fake_mem, 15,
CLK_GATE_SET_TO_DISABLE, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, hw);
ctx->hw = hw;
ctx->parent = parent;
return 0;
}
static struct kunit_suite clk_gate_test_invert_suite = {
.name = "clk-gate-invert-test",
.init = clk_gate_test_invert_init,
.exit = clk_gate_test_exit,
.test_cases = clk_gate_test_invert_cases,
};
static void clk_gate_test_hiword_enable(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
struct clk_hw *parent = ctx->parent;
struct clk_hw *hw = ctx->hw;
struct clk *clk = hw->clk;
u32 enable_val = BIT(9) | BIT(9 + 16);
KUNIT_ASSERT_EQ(test, clk_prepare_enable(clk), 0);
KUNIT_EXPECT_EQ(test, enable_val, le32_to_cpu(ctx->fake_reg));
KUNIT_EXPECT_TRUE(test, clk_hw_is_enabled(hw));
KUNIT_EXPECT_TRUE(test, clk_hw_is_prepared(hw));
KUNIT_EXPECT_TRUE(test, clk_hw_is_enabled(parent));
KUNIT_EXPECT_TRUE(test, clk_hw_is_prepared(parent));
}
static void clk_gate_test_hiword_disable(struct kunit *test)
{
struct clk_gate_test_context *ctx = test->priv;
struct clk_hw *parent = ctx->parent;
struct clk_hw *hw = ctx->hw;
struct clk *clk = hw->clk;
u32 enable_val = BIT(9) | BIT(9 + 16);
u32 disable_val = BIT(9 + 16);
KUNIT_ASSERT_EQ(test, clk_prepare_enable(clk), 0);
KUNIT_ASSERT_EQ(test, enable_val, le32_to_cpu(ctx->fake_reg));
clk_disable_unprepare(clk);
KUNIT_EXPECT_EQ(test, disable_val, le32_to_cpu(ctx->fake_reg));
KUNIT_EXPECT_FALSE(test, clk_hw_is_enabled(hw));
KUNIT_EXPECT_FALSE(test, clk_hw_is_prepared(hw));
KUNIT_EXPECT_FALSE(test, clk_hw_is_enabled(parent));
KUNIT_EXPECT_FALSE(test, clk_hw_is_prepared(parent));
}
static struct kunit_case clk_gate_test_hiword_cases[] = {
KUNIT_CASE(clk_gate_test_hiword_enable),
KUNIT_CASE(clk_gate_test_hiword_disable),
{}
};
static int clk_gate_test_hiword_init(struct kunit *test)
{
struct clk_hw *parent;
struct clk_hw *hw;
struct clk_gate_test_context *ctx;
ctx = clk_gate_test_alloc_ctx(test);
parent = clk_hw_register_fixed_rate(NULL, "test_parent", NULL, 0,
2000000);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
hw = clk_hw_register_gate_parent_hw(NULL, "test_gate", parent, 0,
ctx->fake_mem, 9,
CLK_GATE_HIWORD_MASK, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, hw);
ctx->hw = hw;
ctx->parent = parent;
return 0;
}
static struct kunit_suite clk_gate_test_hiword_suite = {
.name = "clk-gate-hiword-test",
.init = clk_gate_test_hiword_init,
.exit = clk_gate_test_exit,
.test_cases = clk_gate_test_hiword_cases,
};
static void clk_gate_test_is_enabled(struct kunit *test)
{
struct clk_hw *hw;
struct clk_gate_test_context *ctx;
ctx = clk_gate_test_alloc_ctx(test);
ctx->fake_reg = cpu_to_le32(BIT(7));
hw = clk_hw_register_gate(NULL, "test_gate", NULL, 0, ctx->fake_mem, 7,
0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, hw);
KUNIT_ASSERT_TRUE(test, clk_hw_is_enabled(hw));
clk_hw_unregister_gate(hw);
}
static void clk_gate_test_is_disabled(struct kunit *test)
{
struct clk_hw *hw;
struct clk_gate_test_context *ctx;
ctx = clk_gate_test_alloc_ctx(test);
ctx->fake_reg = cpu_to_le32(BIT(4));
hw = clk_hw_register_gate(NULL, "test_gate", NULL, 0, ctx->fake_mem, 7,
0, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, hw);
KUNIT_ASSERT_FALSE(test, clk_hw_is_enabled(hw));
clk_hw_unregister_gate(hw);
}
static void clk_gate_test_is_enabled_inverted(struct kunit *test)
{
struct clk_hw *hw;
struct clk_gate_test_context *ctx;
ctx = clk_gate_test_alloc_ctx(test);
ctx->fake_reg = cpu_to_le32(BIT(31));
hw = clk_hw_register_gate(NULL, "test_gate", NULL, 0, ctx->fake_mem, 2,
CLK_GATE_SET_TO_DISABLE, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, hw);
KUNIT_ASSERT_TRUE(test, clk_hw_is_enabled(hw));
clk_hw_unregister_gate(hw);
}
static void clk_gate_test_is_disabled_inverted(struct kunit *test)
{
struct clk_hw *hw;
struct clk_gate_test_context *ctx;
ctx = clk_gate_test_alloc_ctx(test);
ctx->fake_reg = cpu_to_le32(BIT(29));
hw = clk_hw_register_gate(NULL, "test_gate", NULL, 0, ctx->fake_mem, 29,
CLK_GATE_SET_TO_DISABLE, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, hw);
KUNIT_ASSERT_FALSE(test, clk_hw_is_enabled(hw));
clk_hw_unregister_gate(hw);
}
static struct kunit_case clk_gate_test_enabled_cases[] = {
KUNIT_CASE(clk_gate_test_is_enabled),
KUNIT_CASE(clk_gate_test_is_disabled),
KUNIT_CASE(clk_gate_test_is_enabled_inverted),
KUNIT_CASE(clk_gate_test_is_disabled_inverted),
{}
};
static struct kunit_suite clk_gate_test_enabled_suite = {
.name = "clk-gate-is_enabled-test",
.test_cases = clk_gate_test_enabled_cases,
};
kunit_test_suites(
&clk_gate_register_test_suite,
&clk_gate_test_suite,
&clk_gate_test_invert_suite,
&clk_gate_test_hiword_suite,
&clk_gate_test_enabled_suite
);
MODULE_DESCRIPTION("Kunit tests for clk gate");
MODULE_LICENSE("GPL v2");
