These tests use SPI flash (and the sandbox emulation) to operate.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Expand SPI tests to cover compatibility functions - Minor renames for clarity
Changes in v2: - Create a 'spi.bin' file for the SPI tests
test/dm/Makefile | 1 + test/dm/spi.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++++ test/dm/test-dm.sh | 2 + 3 files changed, 130 insertions(+) create mode 100644 test/dm/spi.c
diff --git a/test/dm/Makefile b/test/dm/Makefile index 5c2415e..d1b9c9a 100644 --- a/test/dm/Makefile +++ b/test/dm/Makefile @@ -18,4 +18,5 @@ obj-$(CONFIG_DM_TEST) += core.o obj-$(CONFIG_DM_TEST) += ut.o ifneq ($(CONFIG_SANDBOX),) obj-$(CONFIG_DM_GPIO) += gpio.o +obj-$(CONFIG_DM_SPI) += spi.o endif diff --git a/test/dm/spi.c b/test/dm/spi.c new file mode 100644 index 0000000..61b5b25 --- /dev/null +++ b/test/dm/spi.c @@ -0,0 +1,127 @@ +/* + * 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 <dm/device-internal.h> +#include <dm/test.h> +#include <dm/uclass-internal.h> +#include <dm/ut.h> +#include <dm/util.h> +#include <asm/state.h> + +/* Test that we can find buses and chip-selects */ +static int dm_test_spi_find(struct dm_test_state *dms) +{ + 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)); + + /* + * spi_post_bind() 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 = info.dev->of_offset; + sandbox_sf_unbind_emul(state_get_current(), busnum, cs); + device_remove(info.dev); + 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(info.dev, NULL); + + /* 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)); + ut_assertok(spi_cs_info(bus, cs, &info)); + ut_asserteq_ptr(info.dev, NULL); + + /* 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 dm_test_state *dms) +{ + 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); diff --git a/test/dm/test-dm.sh b/test/dm/test-dm.sh index ef5aca5..bb99677 100755 --- a/test/dm/test-dm.sh +++ b/test/dm/test-dm.sh @@ -4,4 +4,6 @@ NUM_CPUS=$(cat /proc/cpuinfo |grep -c processor) dtc -I dts -O dtb test/dm/test.dts -o test/dm/test.dtb make O=sandbox sandbox_config make O=sandbox -s -j${NUM_CPUS} +dd if=/dev/zero of=spi.bin bs=1M count=2 ./sandbox/u-boot -d test/dm/test.dtb -c "dm test" +rm spi.bin