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test/dm/spi.c
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/* * Copyright (C) 2013 Google, Inc * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <dm.h> #include <fdtdec.h> #include <spi.h> #include <spi_flash.h> #include <asm/state.h> #include <dm/device-internal.h> #include <dm/test.h> #include <dm/uclass-internal.h> #include <dm/util.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 = 1; struct spi_cs_info info; int of_offset; ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_SPI, busnum, false, &bus)); /* * 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)); of_offset = dev_of_offset(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, speed, mode, NULL, 0, &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, "spi_flash_std", "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, of_offset, "name")); ut_assertok(spi_find_bus_and_cs(busnum, cs, &bus, &dev)); ut_assertok(spi_get_bus_and_cs(busnum, cs, speed, mode, "spi_flash_std", "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, of_offset, "name")); ut_assertok(spi_get_bus_and_cs(busnum, cs_b, speed, mode, "spi_flash_std", "name", &bus, &slave)); ut_assertok(spi_cs_info(bus, cs_b, &info)); ut_asserteq_ptr(info.dev, slave->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, DM_TESTF_SCAN_PDATA | DM_TESTF_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, mode = 0; const char dout[5] = {0x9f}; unsigned char din[5]; ut_assertok(spi_get_bus_and_cs(busnum, cs, 1000000, mode, NULL, 0, &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 */ #ifdef CONFIG_DM_SPI_FLASH sandbox_sf_unbind_emul(state_get_current(), busnum, cs); #endif return 0; } DM_TEST(dm_test_spi_xfer, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |