drivers/mmc/host/sdhci-of-aspeed-test.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* Copyright (C) 2020 IBM Corp. */
   3
   4 #include <kunit/test.h>
   5
   6 static void aspeed_sdhci_phase_ddr52(struct kunit *test)
   7 {
   8         int rate = 52000000;
   9
  10         KUNIT_EXPECT_EQ(test, 0,
  11                         aspeed_sdhci_phase_to_tap(NULL, rate, 0));
  12         KUNIT_EXPECT_EQ(test, 0,
  13                         aspeed_sdhci_phase_to_tap(NULL, rate, 1));
  14         KUNIT_EXPECT_EQ(test, 1,
  15                         aspeed_sdhci_phase_to_tap(NULL, rate, 2));
  16         KUNIT_EXPECT_EQ(test, 1,
  17                         aspeed_sdhci_phase_to_tap(NULL, rate, 3));
  18         KUNIT_EXPECT_EQ(test, 2,
  19                         aspeed_sdhci_phase_to_tap(NULL, rate, 4));
  20         KUNIT_EXPECT_EQ(test, 3,
  21                         aspeed_sdhci_phase_to_tap(NULL, rate, 5));
  22         KUNIT_EXPECT_EQ(test, 14,
  23                         aspeed_sdhci_phase_to_tap(NULL, rate, 23));
  24         KUNIT_EXPECT_EQ(test, 15,
  25                         aspeed_sdhci_phase_to_tap(NULL, rate, 24));
  26         KUNIT_EXPECT_EQ(test, 15,
  27                         aspeed_sdhci_phase_to_tap(NULL, rate, 25));
  28
  29         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 0,
  30                         aspeed_sdhci_phase_to_tap(NULL, rate, 180));
  31         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 0,
  32                         aspeed_sdhci_phase_to_tap(NULL, rate, 181));
  33         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
  34                         aspeed_sdhci_phase_to_tap(NULL, rate, 182));
  35         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
  36                         aspeed_sdhci_phase_to_tap(NULL, rate, 183));
  37         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 2,
  38                         aspeed_sdhci_phase_to_tap(NULL, rate, 184));
  39         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 3,
  40                         aspeed_sdhci_phase_to_tap(NULL, rate, 185));
  41         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 14,
  42                         aspeed_sdhci_phase_to_tap(NULL, rate, 203));
  43         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
  44                         aspeed_sdhci_phase_to_tap(NULL, rate, 204));
  45         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
  46                         aspeed_sdhci_phase_to_tap(NULL, rate, 205));
  47 }
  48
  49 static void aspeed_sdhci_phase_hs200(struct kunit *test)
  50 {
  51         int rate = 200000000;
  52
  53         KUNIT_EXPECT_EQ(test, 0,
  54                         aspeed_sdhci_phase_to_tap(NULL, rate, 0));
  55         KUNIT_EXPECT_EQ(test, 0,
  56                         aspeed_sdhci_phase_to_tap(NULL, rate, 5));
  57         KUNIT_EXPECT_EQ(test, 1,
  58                         aspeed_sdhci_phase_to_tap(NULL, rate, 6));
  59         KUNIT_EXPECT_EQ(test, 1,
  60                         aspeed_sdhci_phase_to_tap(NULL, rate, 7));
  61         KUNIT_EXPECT_EQ(test, 14,
  62                         aspeed_sdhci_phase_to_tap(NULL, rate, 89));
  63         KUNIT_EXPECT_EQ(test, 15,
  64                         aspeed_sdhci_phase_to_tap(NULL, rate, 90));
  65         KUNIT_EXPECT_EQ(test, 15,
  66                         aspeed_sdhci_phase_to_tap(NULL, rate, 91));
  67         KUNIT_EXPECT_EQ(test, 15,
  68                         aspeed_sdhci_phase_to_tap(NULL, rate, 96));
  69
  70         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK,
  71                         aspeed_sdhci_phase_to_tap(NULL, rate, 180));
  72         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK,
  73                         aspeed_sdhci_phase_to_tap(NULL, rate, 185));
  74         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
  75                         aspeed_sdhci_phase_to_tap(NULL, rate, 186));
  76         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 1,
  77                         aspeed_sdhci_phase_to_tap(NULL, rate, 187));
  78         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 14,
  79                         aspeed_sdhci_phase_to_tap(NULL, rate, 269));
  80         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
  81                         aspeed_sdhci_phase_to_tap(NULL, rate, 270));
  82         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
  83                         aspeed_sdhci_phase_to_tap(NULL, rate, 271));
  84         KUNIT_EXPECT_EQ(test, ASPEED_SDHCI_TAP_PARAM_INVERT_CLK | 15,
  85                         aspeed_sdhci_phase_to_tap(NULL, rate, 276));
  86 }
  87
  88 static struct kunit_case aspeed_sdhci_test_cases[] = {
  89         KUNIT_CASE(aspeed_sdhci_phase_ddr52),
  90         KUNIT_CASE(aspeed_sdhci_phase_hs200),
  91         {}
  92 };
  93
  94 static struct kunit_suite aspeed_sdhci_test_suite = {
  95         .name = "sdhci-of-aspeed",
  96         .test_cases = aspeed_sdhci_test_cases,
  97 };
  98
  99 kunit_test_suite(aspeed_sdhci_test_suite);