mdio_mux.c 2.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2019
  4. * Alex Marginean, NXP
  5. */
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <miiphy.h>
  9. #include <misc.h>
  10. #include <dm/test.h>
  11. #include <test/test.h>
  12. #include <test/ut.h>
  13. /* macros copied over from mdio_sandbox.c */
  14. #define SANDBOX_PHY_ADDR 5
  15. #define SANDBOX_PHY_REG_CNT 2
  16. #define TEST_REG_VALUE 0xabcd
  17. static int dm_test_mdio_mux(struct unit_test_state *uts)
  18. {
  19. struct uclass *uc;
  20. struct udevice *mux;
  21. struct udevice *mdio_ch0, *mdio_ch1, *mdio;
  22. struct mdio_ops *ops, *ops_parent;
  23. struct mdio_mux_ops *mmops;
  24. u16 reg;
  25. ut_assertok(uclass_get(UCLASS_MDIO_MUX, &uc));
  26. ut_assertok(uclass_get_device_by_name(UCLASS_MDIO_MUX, "mdio-mux-test",
  27. &mux));
  28. ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-ch-test@0",
  29. &mdio_ch0));
  30. ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-ch-test@1",
  31. &mdio_ch1));
  32. ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-test", &mdio));
  33. ops = mdio_get_ops(mdio_ch0);
  34. ut_assertnonnull(ops);
  35. ut_assertnonnull(ops->read);
  36. ut_assertnonnull(ops->write);
  37. mmops = mdio_mux_get_ops(mux);
  38. ut_assertnonnull(mmops);
  39. ut_assertnonnull(mmops->select);
  40. ops_parent = mdio_get_ops(mdio);
  41. ut_assertnonnull(ops);
  42. ut_assertnonnull(ops->read);
  43. /*
  44. * mux driver sets last register on the emulated PHY whenever a group
  45. * is selected to the selection #. Just reading that register from
  46. * either of the child buses should return the id of the child bus
  47. */
  48. reg = ops->read(mdio_ch0, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
  49. SANDBOX_PHY_REG_CNT - 1);
  50. ut_asserteq(reg, 0);
  51. reg = ops->read(mdio_ch1, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
  52. SANDBOX_PHY_REG_CNT - 1);
  53. ut_asserteq(reg, 1);
  54. mmops->select(mux, MDIO_MUX_SELECT_NONE, 5);
  55. reg = ops_parent->read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
  56. SANDBOX_PHY_REG_CNT - 1);
  57. ut_asserteq(reg, 5);
  58. mmops->deselect(mux, 5);
  59. reg = ops_parent->read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
  60. SANDBOX_PHY_REG_CNT - 1);
  61. ut_asserteq(reg, (u16)MDIO_MUX_SELECT_NONE);
  62. return 0;
  63. }
  64. DM_TEST(dm_test_mdio_mux, UT_TESTF_SCAN_FDT);