LXR uboot/test/dm/spmi.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
   4 */
   5
   6#include <common.h>
   7#include <fdtdec.h>
   8#include <dm.h>
   9#include <malloc.h>
  10#include <dm/device.h>
  11#include <dm/root.h>
  12#include <dm/test.h>
  13#include <dm/util.h>
  14#include <power/pmic.h>
  15#include <spmi/spmi.h>
  16#include <asm/gpio.h>
  17#include <test/test.h>
  18#include <test/ut.h>
  19
  20/* Test if bus childs got probed propperly*/
  21static int dm_test_spmi_probe(struct unit_test_state *uts)
  22{
  23        const char *name = "spmi@0";
  24        struct udevice *bus, *dev;
  25
  26        ut_assertok(uclass_get_device(UCLASS_SPMI, 0, &bus));
  27
  28        /* Check bus name */
  29        ut_asserteq_str(name, bus->name);
  30
  31        /* Check that it has some devices */
  32        ut_asserteq(device_has_children(bus), true);
  33
  34        ut_assertok(device_find_first_child(bus, &dev));
  35
  36        /* There should be at least one child */
  37        ut_assertnonnull(dev);
  38
  39        /* Check that only PMICs are connected to the bus */
  40        while (dev) {
  41                ut_asserteq(device_get_uclass_id(dev), UCLASS_PMIC);
  42                device_find_next_child(&dev);
  43        }
  44
  45        return 0;
  46}
  47DM_TEST(dm_test_spmi_probe, UT_TESTF_SCAN_FDT);
  48
  49/* Test if it's possible to read bus directly and indirectly */
  50static int dm_test_spmi_access(struct unit_test_state *uts)
  51{
  52        const char *pmic_name = "pm8916@0";
  53        struct udevice *bus, *pmic;
  54
  55        ut_assertok(uclass_get_device(UCLASS_SPMI, 0, &bus));
  56
  57        ut_assertok(device_get_child(bus, 0, &pmic));
  58
  59        /* Sanity check if it's proper PMIC */
  60        ut_asserteq_str(pmic_name, pmic->name);
  61
  62        /* Read PMIC ID reg using SPMI bus - it assumes it has slaveID == 0*/
  63        ut_asserteq(spmi_reg_read(bus, 0, 0xC0, 0x4), 0x10);
  64        ut_asserteq(spmi_reg_read(bus, 0, 0xC0, 0x5), 0x5);
  65
  66        /* Read ID reg via pmic interface */
  67        ut_asserteq(pmic_reg_read(pmic, 0xC004), 0x10);
  68        ut_asserteq(pmic_reg_read(pmic, 0xC005), 0x5);
  69
  70        return 0;
  71}
  72DM_TEST(dm_test_spmi_access, UT_TESTF_SCAN_FDT);
  73
  74
  75/* Test if it's possible to access GPIO that should be in pmic */
  76static int dm_test_spmi_access_peripheral(struct unit_test_state *uts)
  77{
  78        struct udevice *dev;
  79        unsigned int offset, gpio;
  80        const char *name;
  81        int offset_count;
  82
  83        /* Get second pin of PMIC GPIO */
  84        ut_assertok(gpio_lookup_name("spmi1", &dev, &offset, &gpio));
  85
  86        /* Check if PMIC is parent */
  87        ut_asserteq(device_get_uclass_id(dev->parent), UCLASS_PMIC);
  88
  89        /* This should be second gpio */
  90        ut_asserteq(1, offset);
  91
  92        name = gpio_get_bank_info(dev, &offset_count);
  93
  94        /* Check bank name */
  95        ut_asserteq_str("spmi", name);
  96        /* Check pin count */
  97        ut_asserteq(4, offset_count);
  98
  99        ut_assertok(gpio_request(gpio, "testing"));
 100
 101        /* Try to set/clear gpio */
 102        ut_assertok(gpio_direction_output(gpio, 0));
 103        ut_asserteq(gpio_get_value(gpio), 0);
 104        ut_assertok(gpio_direction_output(gpio, 1));
 105        ut_asserteq(gpio_get_value(gpio), 1);
 106        ut_assertok(gpio_direction_input(gpio));
 107        ut_asserteq(gpio_get_value(gpio), 1);
 108
 109        ut_assertok(gpio_free(gpio));
 110
 111        return 0;
 112}
 113DM_TEST(dm_test_spmi_access_peripheral, UT_TESTF_SCAN_FDT);
 114