test/dm/pmic.c

   1 /*
   2  * Tests for the driver model pmic API
   3  *
   4  * Copyright (c) 2015 Samsung Electronics
   5  * Przemyslaw Marczak <p.marczak@samsung.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <errno.h>
  12 #include <dm.h>
  13 #include <fdtdec.h>
  14 #include <malloc.h>
  15 #include <dm/device-internal.h>
  16 #include <dm/root.h>
  17 #include <dm/util.h>
  18 #include <dm/test.h>
  19 #include <dm/uclass-internal.h>
  20 #include <power/pmic.h>
  21 #include <power/sandbox_pmic.h>
  22 #include <test/ut.h>
  23
  24 DECLARE_GLOBAL_DATA_PTR;
  25
  26 /* Test PMIC get method */
  27 static int dm_test_power_pmic_get(struct unit_test_state *uts)
  28 {
  29         const char *name = "sandbox_pmic";
  30         struct udevice *dev;
  31
  32         ut_assertok(pmic_get(name, &dev));
  33         ut_assertnonnull(dev);
  34
  35         /* Check PMIC's name */
  36         ut_asserteq_str(name, dev->name);
  37
  38         return 0;
  39 }
  40 DM_TEST(dm_test_power_pmic_get, DM_TESTF_SCAN_FDT);
  41
  42 /* Test PMIC I/O */
  43 static int dm_test_power_pmic_io(struct unit_test_state *uts)
  44 {
  45         const char *name = "sandbox_pmic";
  46         uint8_t out_buffer, in_buffer;
  47         struct udevice *dev;
  48         int reg_count, i;
  49
  50         ut_assertok(pmic_get(name, &dev));
  51
  52         reg_count = pmic_reg_count(dev);
  53         ut_asserteq(reg_count, SANDBOX_PMIC_REG_COUNT);
  54
  55         /*
  56          * Test PMIC I/O - write and read a loop counter.
  57          * usually we can't write to all PMIC's registers in the real hardware,
  58          * but we can to the sandbox pmic.
  59          */
  60         for (i = 0; i < reg_count; i++) {
  61                 out_buffer = i;
  62                 ut_assertok(pmic_write(dev, i, &out_buffer, 1));
  63                 ut_assertok(pmic_read(dev, i, &in_buffer, 1));
  64                 ut_asserteq(out_buffer, in_buffer);
  65         }
  66
  67         return 0;
  68 }
  69 DM_TEST(dm_test_power_pmic_io, DM_TESTF_SCAN_FDT);