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