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Diffstat (limited to 'roms/u-boot/test/dm/spi.c')
| -rw-r--r-- | roms/u-boot/test/dm/spi.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/roms/u-boot/test/dm/spi.c b/roms/u-boot/test/dm/spi.c new file mode 100644 index 000000000..ee4ad3aba --- /dev/null +++ b/roms/u-boot/test/dm/spi.c @@ -0,0 +1,206 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2013 Google, Inc + */ + +#include <common.h> +#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, 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, + "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, UT_TESTF_SCAN_PDATA | UT_TESTF_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, mode = 0; + + /* Get spi slave on CS0 */ + ut_assertok(spi_get_bus_and_cs(busnum, cs_a, 1000000, mode, NULL, 0, + &bus, &slave_a)); + /* Get spi slave on CS1 */ + ut_assertok(spi_get_bus_and_cs(busnum, cs_b, 1000000, mode, NULL, 0, + &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, UT_TESTF_SCAN_PDATA | UT_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 + */ +#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, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); |