spmi.c 2.9 KB

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