mux-emul.c 2.3 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106
  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
  4. * Pratyush Yadav <p.yadav@ti.com>
  5. */
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <mux.h>
  9. #include <mux-internal.h>
  10. #include <dm/test.h>
  11. #include <test/ut.h>
  12. #include <asm/global_data.h>
  13. struct mux_emul_priv {
  14. u32 state;
  15. };
  16. static int mux_emul_set(struct mux_control *mux, int state)
  17. {
  18. struct mux_emul_priv *priv = dev_get_priv(mux->dev);
  19. priv->state = state;
  20. return 0;
  21. }
  22. static int mux_emul_probe(struct udevice *dev)
  23. {
  24. struct mux_chip *mux_chip = dev_get_uclass_priv(dev);
  25. struct mux_control *mux;
  26. u32 idle_state;
  27. int ret;
  28. ret = mux_alloc_controllers(dev, 1);
  29. if (ret < 0)
  30. return ret;
  31. mux = &mux_chip->mux[0];
  32. ret = dev_read_u32(dev, "idle-state", &idle_state);
  33. if (ret)
  34. return ret;
  35. mux->idle_state = idle_state;
  36. mux->states = 0x100000;
  37. return 0;
  38. }
  39. static const struct mux_control_ops mux_emul_ops = {
  40. .set = mux_emul_set,
  41. };
  42. static const struct udevice_id mux_emul_of_match[] = {
  43. { .compatible = "mux-emul" },
  44. { /* sentinel */ },
  45. };
  46. U_BOOT_DRIVER(emul_mux) = {
  47. .name = "mux-emul",
  48. .id = UCLASS_MUX,
  49. .of_match = mux_emul_of_match,
  50. .ops = &mux_emul_ops,
  51. .probe = mux_emul_probe,
  52. .priv_auto = sizeof(struct mux_emul_priv),
  53. };
  54. static int dm_test_mux_emul_default_state(struct unit_test_state *uts)
  55. {
  56. struct udevice *dev;
  57. struct mux_control *mux;
  58. struct mux_emul_priv *priv;
  59. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
  60. &dev));
  61. ut_assertok(mux_control_get(dev, "mux4", &mux));
  62. priv = dev_get_priv(mux->dev);
  63. ut_asserteq(0xabcd, priv->state);
  64. return 0;
  65. }
  66. DM_TEST(dm_test_mux_emul_default_state, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  67. static int dm_test_mux_emul_select_deselect(struct unit_test_state *uts)
  68. {
  69. struct udevice *dev;
  70. struct mux_control *mux;
  71. struct mux_emul_priv *priv;
  72. gd->flags &= ~(GD_FLG_SILENT | GD_FLG_RECORD);
  73. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
  74. &dev));
  75. ut_assertok(mux_control_get(dev, "mux4", &mux));
  76. priv = dev_get_priv(mux->dev);
  77. ut_assertok(mux_control_select(mux, 0x1234));
  78. ut_asserteq(priv->state, 0x1234);
  79. ut_assertok(mux_control_deselect(mux));
  80. ut_asserteq(priv->state, 0xabcd);
  81. return 0;
  82. }
  83. DM_TEST(dm_test_mux_emul_select_deselect, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);