From: Maxime Ripard <maxime@cerno.tech>
To: linux-clk@vger.kernel.org,
Mike Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>
Cc: Yassine Oudjana <y.oudjana@protonmail.com>,
Naresh Kamboju <naresh.kamboju@linaro.org>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Tony Lindgren <tony@atomide.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Alexander Stein <alexander.stein@ew.tq-group.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Maxime Ripard <maxime@cerno.tech>
Subject: [PATCH v5 11/28] clk: tests: Add tests for mux with multiple parents
Date: Mon, 16 May 2022 15:25:10 +0200 [thread overview]
Message-ID: <20220516132527.328190-12-maxime@cerno.tech> (raw)
In-Reply-To: <20220516132527.328190-1-maxime@cerno.tech>
We'll need to test a few corner cases that occur when we have a mux
clock whose default parent is missing.
For now, let's create the context structure and the trivial ops, along
with a test suite that just tests trivial things for now, without
considering the orphan case.
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/clk/clk_test.c | 119 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 119 insertions(+)
diff --git a/drivers/clk/clk_test.c b/drivers/clk/clk_test.c
index 87f581c2e1e1..26468fb24819 100644
--- a/drivers/clk/clk_test.c
+++ b/drivers/clk/clk_test.c
@@ -108,6 +108,39 @@ static const struct clk_ops clk_dummy_single_parent_ops = {
.get_parent = clk_dummy_single_get_parent,
};
+struct clk_multiple_parent_ctx {
+ struct clk_dummy_context parents_ctx[2];
+ struct clk_hw hw;
+ u8 current_parent;
+};
+
+static int clk_multiple_parents_mux_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct clk_multiple_parent_ctx *ctx =
+ container_of(hw, struct clk_multiple_parent_ctx, hw);
+
+ if (index >= clk_hw_get_num_parents(hw))
+ return -EINVAL;
+
+ ctx->current_parent = index;
+
+ return 0;
+}
+
+static u8 clk_multiple_parents_mux_get_parent(struct clk_hw *hw)
+{
+ struct clk_multiple_parent_ctx *ctx =
+ container_of(hw, struct clk_multiple_parent_ctx, hw);
+
+ return ctx->current_parent;
+}
+
+static const struct clk_ops clk_multiple_parents_mux_ops = {
+ .get_parent = clk_multiple_parents_mux_get_parent,
+ .set_parent = clk_multiple_parents_mux_set_parent,
+ .determine_rate = __clk_mux_determine_rate_closest,
+};
+
static int clk_test_init_with_ops(struct kunit *test, const struct clk_ops *ops)
{
struct clk_dummy_context *ctx;
@@ -347,6 +380,91 @@ static struct kunit_suite clk_uncached_test_suite = {
.test_cases = clk_uncached_test_cases,
};
+static int
+clk_multiple_parents_mux_test_init(struct kunit *test)
+{
+ struct clk_multiple_parent_ctx *ctx;
+ const char *parents[2] = { "parent-0", "parent-1"};
+ int ret;
+
+ ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+ test->priv = ctx;
+
+ ctx->parents_ctx[0].hw.init = CLK_HW_INIT_NO_PARENT("parent-0",
+ &clk_dummy_rate_ops,
+ 0);
+ ctx->parents_ctx[0].rate = DUMMY_CLOCK_RATE_1;
+ ret = clk_hw_register(NULL, &ctx->parents_ctx[0].hw);
+ if (ret)
+ return ret;
+
+ ctx->parents_ctx[1].hw.init = CLK_HW_INIT_NO_PARENT("parent-1",
+ &clk_dummy_rate_ops,
+ 0);
+ ctx->parents_ctx[1].rate = DUMMY_CLOCK_RATE_2;
+ ret = clk_hw_register(NULL, &ctx->parents_ctx[1].hw);
+ if (ret)
+ return ret;
+
+ ctx->current_parent = 0;
+ ctx->hw.init = CLK_HW_INIT_PARENTS("test-mux", parents,
+ &clk_multiple_parents_mux_ops,
+ CLK_SET_RATE_PARENT);
+ ret = clk_hw_register(NULL, &ctx->hw);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void
+clk_multiple_parents_mux_test_exit(struct kunit *test)
+{
+ struct clk_multiple_parent_ctx *ctx = test->priv;
+
+ clk_hw_unregister(&ctx->hw);
+ clk_hw_unregister(&ctx->parents_ctx[0].hw);
+ clk_hw_unregister(&ctx->parents_ctx[1].hw);
+}
+
+/*
+ * Test that for a clock with multiple parents, clk_get_parent()
+ * actually returns the current one.
+ */
+static void
+clk_test_multiple_parents_mux_get_parent(struct kunit *test)
+{
+ struct clk_multiple_parent_ctx *ctx = test->priv;
+ struct clk_hw *hw = &ctx->hw;
+ struct clk *clk = hw->clk;
+ struct clk *parent;
+
+ parent = clk_get_parent(clk);
+ KUNIT_EXPECT_TRUE(test, clk_is_match(parent, ctx->parents_ctx[0].hw.clk));
+}
+
+static struct kunit_case clk_multiple_parents_mux_test_cases[] = {
+ KUNIT_CASE(clk_test_multiple_parents_mux_get_parent),
+ {}
+};
+
+/*
+ * Test suite for a basic mux clock with two parents, with
+ * CLK_SET_RATE_PARENT on the child.
+ *
+ * These tests exercise the consumer API and check that the state of the
+ * child and parents are sane and consistent.
+ */
+static struct kunit_suite
+clk_multiple_parents_mux_test_suite = {
+ .name = "clk-multiple-parents-mux-test",
+ .init = clk_multiple_parents_mux_test_init,
+ .exit = clk_multiple_parents_mux_test_exit,
+ .test_cases = clk_multiple_parents_mux_test_cases,
+};
+
struct clk_single_parent_ctx {
struct clk_dummy_context parent_ctx;
struct clk_hw hw;
@@ -1288,6 +1406,7 @@ static struct kunit_suite clk_range_minimize_test_suite = {
kunit_test_suites(
&clk_test_suite,
+ &clk_multiple_parents_mux_test_suite,
&clk_orphan_transparent_single_parent_test_suite,
&clk_range_test_suite,
&clk_range_maximize_test_suite,
--
2.36.1
next prev parent reply other threads:[~2022-05-16 13:27 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-16 13:24 [PATCH v5 00/28] clk: More clock rate fixes and tests Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 01/28] clk: Drop the rate range on clk_put() Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 02/28] clk: Skip clamping when rounding if there's no boundaries Maxime Ripard
2022-06-27 23:21 ` Stephen Boyd
2022-06-28 8:58 ` Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 03/28] clk: Introduce clk_get_rate_range() Maxime Ripard
2022-06-27 23:23 ` Stephen Boyd
2022-05-16 13:25 ` [PATCH v5 04/28] drm/vc4: hdmi: Rework hdmi_enable_4kp60 detection Maxime Ripard
2022-06-27 23:31 ` Stephen Boyd
2022-06-28 9:47 ` Maxime Ripard
2022-06-29 8:48 ` Stephen Boyd
2022-06-29 9:29 ` Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 05/28] clk: Mention that .recalc_rate can return 0 on error Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 06/28] clk: Clarify clk_get_rate() expectations Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 07/28] clk: tests: Add test suites description Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 08/28] clk: tests: Add reference to the orphan mux bug report Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 09/28] clk: tests: Add tests for uncached clock Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 10/28] clk: tests: Add tests for single parent mux Maxime Ripard
2022-05-16 13:25 ` Maxime Ripard [this message]
2022-05-16 13:25 ` [PATCH v5 12/28] clk: tests: Add some tests for orphan with multiple parents Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 13/28] clk: Take into account uncached clocks in clk_set_rate_range() Maxime Ripard
2022-06-29 9:01 ` Stephen Boyd
2022-06-29 12:42 ` Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 14/28] clk: Fix clk_get_parent() documentation Maxime Ripard
2022-06-29 9:05 ` Stephen Boyd
2022-06-29 13:12 ` Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 15/28] clk: Set req_rate on reparenting Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 16/28] clk: Change clk_core_init_rate_req prototype Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 17/28] clk: Move clk_core_init_rate_req() from clk_core_round_rate_nolock() to its caller Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 18/28] clk: Introduce clk_hw_init_rate_request() Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 19/28] clk: Add our request boundaries in clk_core_init_rate_req Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 20/28] clk: Switch from __clk_determine_rate to clk_core_round_rate_nolock Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 21/28] clk: Introduce clk_core_has_parent() Maxime Ripard
2022-06-29 9:11 ` Stephen Boyd
2022-05-16 13:25 ` [PATCH v5 22/28] clk: Stop forwarding clk_rate_requests to the parent Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 23/28] clk: Zero the clk_rate_request structure Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 24/28] clk: Test the clock pointer in clk_hw_get_name() Maxime Ripard
2022-06-29 9:13 ` Stephen Boyd
2022-06-29 9:39 ` Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 25/28] clk: Introduce the clk_hw_get_rate_range function Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 26/28] clk: qcom: clk-rcg2: Take clock boundaries into consideration for gfx3d Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 27/28] clk: tests: Add some tests for clk_get_rate_range() Maxime Ripard
2022-05-16 13:25 ` [PATCH v5 28/28] clk: tests: Add missing test case for ranges Maxime Ripard
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220516132527.328190-12-maxime@cerno.tech \
--to=maxime@cerno.tech \
--cc=alexander.stein@ew.tq-group.com \
--cc=dmitry.baryshkov@linaro.org \
--cc=jbrunet@baylibre.com \
--cc=linux-clk@vger.kernel.org \
--cc=m.szyprowski@samsung.com \
--cc=mturquette@baylibre.com \
--cc=naresh.kamboju@linaro.org \
--cc=narmstrong@baylibre.com \
--cc=sboyd@kernel.org \
--cc=tony@atomide.com \
--cc=y.oudjana@protonmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).