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126 lines
3.9 KiB
126 lines
3.9 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2013 Google, Inc |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <fdtdec.h> |
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#include <spi.h> |
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#include <spi_flash.h> |
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#include <asm/state.h> |
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#include <dm/device-internal.h> |
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#include <dm/test.h> |
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#include <dm/uclass-internal.h> |
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#include <dm/util.h> |
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#include <test/ut.h> |
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/* Test that we can find buses and chip-selects */ |
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static int dm_test_spi_find(struct unit_test_state *uts) |
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{ |
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struct sandbox_state *state = state_get_current(); |
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struct spi_slave *slave; |
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struct udevice *bus, *dev; |
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const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 1; |
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struct spi_cs_info info; |
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ofnode node; |
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ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_SPI, busnum, |
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false, &bus)); |
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/* |
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* The post_bind() method will bind devices to chip selects. Check |
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* this then remove the emulation and the slave device. |
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*/ |
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ut_asserteq(0, uclass_get_device_by_seq(UCLASS_SPI, busnum, &bus)); |
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ut_assertok(spi_cs_info(bus, cs, &info)); |
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node = dev_ofnode(info.dev); |
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device_remove(info.dev, DM_REMOVE_NORMAL); |
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device_unbind(info.dev); |
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/* |
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* Even though the device is gone, the sandbox SPI drivers always |
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* reports that CS 0 is present |
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*/ |
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ut_assertok(spi_cs_info(bus, cs, &info)); |
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ut_asserteq_ptr(NULL, info.dev); |
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/* This finds nothing because we removed the device */ |
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ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev)); |
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ut_asserteq(-ENODEV, spi_get_bus_and_cs(busnum, cs, speed, mode, |
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NULL, 0, &bus, &slave)); |
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/* |
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* This forces the device to be re-added, but there is no emulation |
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* connected so the probe will fail. We require that bus is left |
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* alone on failure, and that the spi_get_bus_and_cs() does not add |
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* a 'partially-inited' device. |
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*/ |
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ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev)); |
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ut_asserteq(-ENOENT, spi_get_bus_and_cs(busnum, cs, speed, mode, |
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"spi_flash_std", "name", &bus, |
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&slave)); |
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sandbox_sf_unbind_emul(state_get_current(), busnum, cs); |
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ut_assertok(spi_cs_info(bus, cs, &info)); |
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ut_asserteq_ptr(NULL, info.dev); |
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/* Add the emulation and try again */ |
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ut_assertok(sandbox_sf_bind_emul(state, busnum, cs, bus, node, |
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"name")); |
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ut_assertok(spi_find_bus_and_cs(busnum, cs, &bus, &dev)); |
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ut_assertok(spi_get_bus_and_cs(busnum, cs, speed, mode, |
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"spi_flash_std", "name", &bus, &slave)); |
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ut_assertok(spi_cs_info(bus, cs, &info)); |
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ut_asserteq_ptr(info.dev, slave->dev); |
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/* We should be able to add something to another chip select */ |
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ut_assertok(sandbox_sf_bind_emul(state, busnum, cs_b, bus, node, |
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"name")); |
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ut_assertok(spi_get_bus_and_cs(busnum, cs_b, speed, mode, |
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"spi_flash_std", "name", &bus, &slave)); |
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ut_assertok(spi_cs_info(bus, cs_b, &info)); |
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ut_asserteq_ptr(info.dev, slave->dev); |
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/* |
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* Since we are about to destroy all devices, we must tell sandbox |
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* to forget the emulation device |
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*/ |
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sandbox_sf_unbind_emul(state_get_current(), busnum, cs); |
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sandbox_sf_unbind_emul(state_get_current(), busnum, cs_b); |
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return 0; |
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} |
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DM_TEST(dm_test_spi_find, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |
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/* Test that sandbox SPI works correctly */ |
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static int dm_test_spi_xfer(struct unit_test_state *uts) |
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{ |
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struct spi_slave *slave; |
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struct udevice *bus; |
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const int busnum = 0, cs = 0, mode = 0; |
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const char dout[5] = {0x9f}; |
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unsigned char din[5]; |
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ut_assertok(spi_get_bus_and_cs(busnum, cs, 1000000, mode, NULL, 0, |
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&bus, &slave)); |
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ut_assertok(spi_claim_bus(slave)); |
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ut_assertok(spi_xfer(slave, 40, dout, din, |
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SPI_XFER_BEGIN | SPI_XFER_END)); |
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ut_asserteq(0xff, din[0]); |
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ut_asserteq(0x20, din[1]); |
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ut_asserteq(0x20, din[2]); |
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ut_asserteq(0x15, din[3]); |
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spi_release_bus(slave); |
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/* |
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* Since we are about to destroy all devices, we must tell sandbox |
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* to forget the emulation device |
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*/ |
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#ifdef CONFIG_DM_SPI_FLASH |
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sandbox_sf_unbind_emul(state_get_current(), busnum, cs); |
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#endif |
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return 0; |
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} |
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DM_TEST(dm_test_spi_xfer, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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