1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * (C) Copyright 2019 4 * Alex Marginean, NXP 5 */ 6 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 14/* macros copied over from mdio_sandbox.c */ 15#define SANDBOX_PHY_ADDR 5 16#define SANDBOX_PHY_REG_CNT 2 17 18#define TEST_REG_VALUE 0xabcd 19 20static int dm_test_mdio_mux(struct unit_test_state *uts) 21{ 22 struct uclass *uc; 23 struct udevice *mux; 24 struct udevice *mdio_ch0, *mdio_ch1, *mdio; 25 struct mdio_ops *ops, *ops_parent; 26 struct mdio_mux_ops *mmops; 27 u16 reg; 28 29 ut_assertok(uclass_get(UCLASS_MDIO_MUX, &uc)); 30 31 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO_MUX, "mdio-mux-test", 32 &mux)); 33 34 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-ch-test@0", 35 &mdio_ch0)); 36 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-ch-test@1", 37 &mdio_ch1)); 38 39 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-test", &mdio)); 40 41 ops = mdio_get_ops(mdio_ch0); 42 ut_assertnonnull(ops); 43 ut_assertnonnull(ops->read); 44 ut_assertnonnull(ops->write); 45 46 mmops = mdio_mux_get_ops(mux); 47 ut_assertnonnull(mmops); 48 ut_assertnonnull(mmops->select); 49 50 ops_parent = mdio_get_ops(mdio); 51 ut_assertnonnull(ops); 52 ut_assertnonnull(ops->read); 53 54 /* 55 * mux driver sets last register on the emulated PHY whenever a group 56 * is selected to the selection #. Just reading that register from 57 * either of the child buses should return the id of the child bus 58 */ 59 reg = dm_mdio_read(mdio_ch0, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE, 60 SANDBOX_PHY_REG_CNT - 1); 61 ut_asserteq(reg, 0); 62 63 reg = dm_mdio_read(mdio_ch1, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE, 64 SANDBOX_PHY_REG_CNT - 1); 65 ut_asserteq(reg, 1); 66 67 mmops->select(mux, MDIO_MUX_SELECT_NONE, 5); 68 reg = dm_mdio_read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE, 69 SANDBOX_PHY_REG_CNT - 1); 70 ut_asserteq(reg, 5); 71 72 mmops->deselect(mux, 5); 73 reg = dm_mdio_read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE, 74 SANDBOX_PHY_REG_CNT - 1); 75 ut_asserteq(reg, (u16)MDIO_MUX_SELECT_NONE); 76 77 return 0; 78} 79 80DM_TEST(dm_test_mdio_mux, UT_TESTF_SCAN_FDT); 81