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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2013 Google, Inc */ #include <dm.h> #include <fdtdec.h> #include <spi.h> #include <spi_flash.h> #include <asm/state.h> #include <asm/test.h> #include <dm/device-internal.h> #include <dm/test.h> #include <dm/uclass-internal.h> #include <dm/util.h> #include <test/test.h> #include <test/ut.h> /* Test that we can find buses and chip-selects */ static int dm_test_spi_find(struct unit_test_state *uts) { struct sandbox_state *state = state_get_current(); struct spi_slave *slave; struct udevice *bus, *dev; const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 2; struct spi_cs_info info; ofnode node; /* * The post_bind() method will bind devices to chip selects. Check * this then remove the emulation and the slave device. */ ut_asserteq(0, uclass_get_device_by_seq(UCLASS_SPI, busnum, &bus)); ut_assertok(spi_cs_info(bus, cs, &info)); node = dev_ofnode(info.dev); device_remove(info.dev, DM_REMOVE_NORMAL); device_unbind(info.dev); /* * Even though the device is gone, the sandbox SPI drivers always * reports that CS 0 is present */ ut_assertok(spi_cs_info(bus, cs, &info)); ut_asserteq_ptr(NULL, info.dev); /* This finds nothing because we removed the device */ ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev)); ut_asserteq(-ENODEV, spi_get_bus_and_cs(busnum, cs, &bus, &slave)); /* * This forces the device to be re-added, but there is no emulation * connected so the probe will fail. We require that bus is left * alone on failure, and that the _spi_get_bus_and_cs() does not add * a 'partially-inited' device. */ ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev)); ut_asserteq(-ENOENT, _spi_get_bus_and_cs(busnum, cs, speed, mode, "jedec_spi_nor", "name", &bus, &slave)); sandbox_sf_unbind_emul(state_get_current(), busnum, cs); ut_assertok(spi_cs_info(bus, cs, &info)); ut_asserteq_ptr(NULL, info.dev); /* Add the emulation and try again */ ut_assertok(sandbox_sf_bind_emul(state, busnum, cs, bus, node, "name")); ut_assertok(spi_find_bus_and_cs(busnum, cs, &bus, &dev)); ut_assertok(_spi_get_bus_and_cs(busnum, cs, speed, mode, "jedec_spi_nor", "name", &bus, &slave)); ut_assertok(spi_cs_info(bus, cs, &info)); ut_asserteq_ptr(info.dev, slave->dev); /* We should be able to add something to another chip select */ ut_assertok(sandbox_sf_bind_emul(state, busnum, cs_b, bus, node, "name")); ut_asserteq(-EINVAL, _spi_get_bus_and_cs(busnum, cs_b, speed, mode, "jedec_spi_nor", "name", &bus, &slave)); ut_asserteq(-EINVAL, spi_cs_info(bus, cs_b, &info)); ut_asserteq_ptr(NULL, info.dev); /* * Since we are about to destroy all devices, we must tell sandbox * to forget the emulation device */ sandbox_sf_unbind_emul(state_get_current(), busnum, cs); sandbox_sf_unbind_emul(state_get_current(), busnum, cs_b); return 0; } DM_TEST(dm_test_spi_find, UTF_SCAN_PDATA | UTF_SCAN_FDT); /* dm_test_spi_switch_slaves - Helper function to check whether spi_claim_bus * operates correctly with two spi slaves. * * Check that switching back and forth between two slaves claiming the bus * will update dm_spi_bus->speed and sandbox_spi bus speed/mode correctly. * * @uts - unit test state * @slave_a - first spi slave used for testing * @slave_b - second spi slave used for testing */ static int dm_test_spi_switch_slaves(struct unit_test_state *uts, struct spi_slave *slave_a, struct spi_slave *slave_b) { struct udevice *bus; struct dm_spi_bus *bus_data; /* Check that slaves are on the same bus */ ut_asserteq_ptr(dev_get_parent(slave_a->dev), dev_get_parent(slave_b->dev)); bus = dev_get_parent(slave_a->dev); bus_data = dev_get_uclass_priv(bus); ut_assertok(spi_claim_bus(slave_a)); ut_asserteq(slave_a->max_hz, bus_data->speed); ut_asserteq(slave_a->max_hz, sandbox_spi_get_speed(bus)); ut_asserteq(slave_a->mode, sandbox_spi_get_mode(bus)); spi_release_bus(slave_a); ut_assertok(spi_claim_bus(slave_b)); ut_asserteq(slave_b->max_hz, bus_data->speed); ut_asserteq(slave_b->max_hz, sandbox_spi_get_speed(bus)); ut_asserteq(slave_b->mode, sandbox_spi_get_mode(bus)); spi_release_bus(slave_b); ut_assertok(spi_claim_bus(slave_a)); ut_asserteq(slave_a->max_hz, bus_data->speed); ut_asserteq(slave_a->max_hz, sandbox_spi_get_speed(bus)); ut_asserteq(slave_a->mode, sandbox_spi_get_mode(bus)); spi_release_bus(slave_a); return 0; } static int dm_test_spi_claim_bus(struct unit_test_state *uts) { struct udevice *bus; struct spi_slave *slave_a, *slave_b; struct dm_spi_slave_plat *slave_plat; const int busnum = 0, cs_a = 0, cs_b = 1; /* Get spi slave on CS0 */ ut_assertok(spi_get_bus_and_cs(busnum, cs_a, &bus, &slave_a)); /* Get spi slave on CS1 */ ut_assertok(spi_get_bus_and_cs(busnum, cs_b, &bus, &slave_b)); /* Different max_hz, different mode. */ ut_assert(slave_a->max_hz != slave_b->max_hz); ut_assert(slave_a->mode != slave_b->mode); dm_test_spi_switch_slaves(uts, slave_a, slave_b); /* Different max_hz, same mode. */ slave_a->mode = slave_b->mode; dm_test_spi_switch_slaves(uts, slave_a, slave_b); /* * Same max_hz, different mode. * Restore original mode for slave_a, from platdata. */ slave_plat = dev_get_parent_plat(slave_a->dev); slave_a->mode = slave_plat->mode; slave_a->max_hz = slave_b->max_hz; dm_test_spi_switch_slaves(uts, slave_a, slave_b); return 0; } DM_TEST(dm_test_spi_claim_bus, UTF_SCAN_PDATA | UTF_SCAN_FDT); /* Test that sandbox SPI works correctly */ static int dm_test_spi_xfer(struct unit_test_state *uts) { struct spi_slave *slave; struct udevice *bus; const int busnum = 0, cs = 0; const char dout[5] = {0x9f}; unsigned char din[5]; ut_assertok(spi_get_bus_and_cs(busnum, cs, &bus, &slave)); ut_assertok(spi_claim_bus(slave)); ut_assertok(spi_xfer(slave, 40, dout, din, SPI_XFER_BEGIN | SPI_XFER_END)); ut_asserteq(0xff, din[0]); ut_asserteq(0x20, din[1]); ut_asserteq(0x20, din[2]); ut_asserteq(0x15, din[3]); spi_release_bus(slave); /* * Since we are about to destroy all devices, we must tell sandbox * to forget the emulation device */ #if CONFIG_IS_ENABLED(DM_SPI_FLASH) sandbox_sf_unbind_emul(state_get_current(), busnum, cs); #endif return 0; } DM_TEST(dm_test_spi_xfer, UTF_SCAN_PDATA | UTF_SCAN_FDT); |