128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/*
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* Copyright (C) 2013 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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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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int of_offset;
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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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of_offset = dev_of_offset(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, of_offset,
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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, of_offset,
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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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