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Diffstat (limited to 'drivers/mmc/host/sdhci-of-aspeed-test.c')
-rw-r--r--drivers/mmc/host/sdhci-of-aspeed-test.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-of-aspeed-test.c b/drivers/mmc/host/sdhci-of-aspeed-test.c
new file mode 100644
index 0000000000..ecb502606c
--- /dev/null
+++ b/drivers/mmc/host/sdhci-of-aspeed-test.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Copyright (C) 2020 IBM Corp. */
+
+#include <kunit/test.h>
+
+static void aspeed_sdhci_phase_ddr52(struct kunit *test)
+{
+ int rate = 52000000;
+
+ KUNIT_EXPECT_EQ(test, 0,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 0));
+ KUNIT_EXPECT_EQ(test, 0,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 1));
+ KUNIT_EXPECT_EQ(test, 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 2));
+ KUNIT_EXPECT_EQ(test, 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 3));
+ KUNIT_EXPECT_EQ(test, 2,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 4));
+ KUNIT_EXPECT_EQ(test, 3,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 5));
+ KUNIT_EXPECT_EQ(test, 14,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 23));
+ KUNIT_EXPECT_EQ(test, 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 24));
+ KUNIT_EXPECT_EQ(test, 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 25));
+
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 0,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 180));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 0,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 181));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 182));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 183));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 2,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 184));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 3,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 185));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 14,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 203));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 204));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 205));
+}
+
+static void aspeed_sdhci_phase_hs200(struct kunit *test)
+{
+ int rate = 200000000;
+
+ KUNIT_EXPECT_EQ(test, 0,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 0));
+ KUNIT_EXPECT_EQ(test, 0,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 5));
+ KUNIT_EXPECT_EQ(test, 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 6));
+ KUNIT_EXPECT_EQ(test, 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 7));
+ KUNIT_EXPECT_EQ(test, 14,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 89));
+ KUNIT_EXPECT_EQ(test, 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 90));
+ KUNIT_EXPECT_EQ(test, 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 91));
+ KUNIT_EXPECT_EQ(test, 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 96));
+
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 180));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 185));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 186));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 187));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 14,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 269));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 270));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 271));
+ KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
+ aspeed_sdhci_phase_to_tap(NULL, rate, 276));
+}
+
+static struct kunit_case aspeed_sdhci_test_cases[] = {
+ KUNIT_CASE(aspeed_sdhci_phase_ddr52),
+ KUNIT_CASE(aspeed_sdhci_phase_hs200),
+ {}
+};
+
+static struct kunit_suite aspeed_sdhci_test_suite = {
+ .name = "sdhci-of-aspeed",
+ .test_cases = aspeed_sdhci_test_cases,
+};
+
+kunit_test_suite(aspeed_sdhci_test_suite);