mux-emul.c 2.3 KB

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  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. struct mux_emul_priv {
  13. u32 state;
  14. };
  15. static int mux_emul_set(struct mux_control *mux, int state)
  16. {
  17. struct mux_emul_priv *priv = dev_get_priv(mux->dev);
  18. priv->state = state;
  19. return 0;
  20. }
  21. static int mux_emul_probe(struct udevice *dev)
  22. {
  23. struct mux_chip *mux_chip = dev_get_uclass_priv(dev);
  24. struct mux_control *mux;
  25. u32 idle_state;
  26. int ret;
  27. ret = mux_alloc_controllers(dev, 1);
  28. if (ret < 0)
  29. return ret;
  30. mux = &mux_chip->mux[0];
  31. ret = dev_read_u32(dev, "idle-state", &idle_state);
  32. if (ret)
  33. return ret;
  34. mux->idle_state = idle_state;
  35. mux->states = 0x100000;
  36. return 0;
  37. }
  38. static const struct mux_control_ops mux_emul_ops = {
  39. .set = mux_emul_set,
  40. };
  41. static const struct udevice_id mux_emul_of_match[] = {
  42. { .compatible = "mux-emul" },
  43. { /* sentinel */ },
  44. };
  45. U_BOOT_DRIVER(emul_mux) = {
  46. .name = "mux-emul",
  47. .id = UCLASS_MUX,
  48. .of_match = mux_emul_of_match,
  49. .ops = &mux_emul_ops,
  50. .probe = mux_emul_probe,
  51. .priv_auto_alloc_size = sizeof(struct mux_emul_priv),
  52. };
  53. static int dm_test_mux_emul_default_state(struct unit_test_state *uts)
  54. {
  55. struct udevice *dev;
  56. struct mux_control *mux;
  57. struct mux_emul_priv *priv;
  58. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
  59. &dev));
  60. ut_assertok(mux_control_get(dev, "mux4", &mux));
  61. priv = dev_get_priv(mux->dev);
  62. ut_asserteq(0xabcd, priv->state);
  63. return 0;
  64. }
  65. DM_TEST(dm_test_mux_emul_default_state, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  66. static int dm_test_mux_emul_select_deselect(struct unit_test_state *uts)
  67. {
  68. struct udevice *dev;
  69. struct mux_control *mux;
  70. struct mux_emul_priv *priv;
  71. gd->flags &= ~(GD_FLG_SILENT | GD_FLG_RECORD);
  72. ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
  73. &dev));
  74. ut_assertok(mux_control_get(dev, "mux4", &mux));
  75. priv = dev_get_priv(mux->dev);
  76. ut_assertok(mux_control_select(mux, 0x1234));
  77. ut_asserteq(priv->state, 0x1234);
  78. ut_assertok(mux_control_deselect(mux));
  79. ut_asserteq(priv->state, 0xabcd);
  80. return 0;
  81. }
  82. DM_TEST(dm_test_mux_emul_select_deselect, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);