test/dm/clk.c

   1 /*
   2  * Copyright (C) 2015 Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <clk.h>
   9 #include <dm.h>
  10 #include <asm/test.h>
  11 #include <dm/test.h>
  12 #include <linux/err.h>
  13 #include <test/ut.h>
  14
  15 /* Test that we can find and adjust clocks */
  16 static int dm_test_clk_base(struct unit_test_state *uts)
  17 {
  18         struct udevice *clk;
  19         ulong rate;
  20
  21         ut_assertok(uclass_get_device(UCLASS_CLK, 0, &clk));
  22         rate = clk_get_rate(clk);
  23         ut_asserteq(SANDBOX_CLK_RATE, rate);
  24         ut_asserteq(-EINVAL, clk_set_rate(clk, 0));
  25         ut_assertok(clk_set_rate(clk, rate * 2));
  26         ut_asserteq(SANDBOX_CLK_RATE * 2, clk_get_rate(clk));
  27
  28         return 0;
  29 }
  30 DM_TEST(dm_test_clk_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  31
  32 /* Test that peripheral clocks work as expected */
  33 static int dm_test_clk_periph(struct unit_test_state *uts)
  34 {
  35         struct udevice *clk;
  36         ulong rate;
  37
  38         ut_assertok(uclass_get_device(UCLASS_CLK, 0, &clk));
  39         rate = clk_set_periph_rate(clk, PERIPH_ID_COUNT, 123);
  40         ut_asserteq(-EINVAL, rate);
  41         ut_asserteq(1, IS_ERR_VALUE(rate));
  42
  43         rate = clk_set_periph_rate(clk, PERIPH_ID_SPI, 123);
  44         ut_asserteq(0, rate);
  45         ut_asserteq(123, clk_get_periph_rate(clk, PERIPH_ID_SPI));
  46
  47         rate = clk_set_periph_rate(clk, PERIPH_ID_SPI, 1234);
  48         ut_asserteq(123, rate);
  49
  50         rate = clk_set_periph_rate(clk, PERIPH_ID_I2C, 567);
  51
  52         rate = clk_set_periph_rate(clk, PERIPH_ID_SPI, 1234);
  53         ut_asserteq(1234, rate);
  54
  55         ut_asserteq(567, clk_get_periph_rate(clk, PERIPH_ID_I2C));
  56
  57         return 0;
  58 }
  59 DM_TEST(dm_test_clk_periph, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);