test/dm/spmi.c

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