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https://github.com/u-boot/u-boot.git
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
224 lines
7.2 KiB
C
224 lines
7.2 KiB
C
// 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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* Note: Test coverage does not include 10-bit addressing
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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 <i2c.h>
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#include <asm/state.h>
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#include <asm/test.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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static const int busnum;
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static const int chip = 0x2c;
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/* Test that we can find buses and chips */
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static int dm_test_i2c_find(struct unit_test_state *uts)
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{
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struct udevice *bus, *dev;
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const int no_chip = 0x10;
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ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_I2C, 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_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
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ut_assertok(dm_i2c_probe(bus, chip, 0, &dev));
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ut_asserteq(-ENODEV, dm_i2c_probe(bus, no_chip, 0, &dev));
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ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_I2C, 1, &bus));
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return 0;
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}
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DM_TEST(dm_test_i2c_find, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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static int dm_test_i2c_read_write(struct unit_test_state *uts)
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{
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struct udevice *bus, *dev;
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uint8_t buf[5];
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ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
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ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
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ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\0AB\0", sizeof(buf)));
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return 0;
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}
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DM_TEST(dm_test_i2c_read_write, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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static int dm_test_i2c_speed(struct unit_test_state *uts)
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{
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struct udevice *bus, *dev;
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uint8_t buf[5];
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ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
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/* Use test mode so we create the required errors for invalid speeds */
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sandbox_i2c_set_test_mode(bus, true);
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ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
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ut_assertok(dm_i2c_set_bus_speed(bus, 100000));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(dm_i2c_set_bus_speed(bus, 400000));
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ut_asserteq(400000, dm_i2c_get_bus_speed(bus));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_asserteq(-EINVAL, dm_i2c_write(dev, 0, buf, 5));
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sandbox_i2c_set_test_mode(bus, false);
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return 0;
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}
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DM_TEST(dm_test_i2c_speed, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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static int dm_test_i2c_offset_len(struct unit_test_state *uts)
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{
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struct udevice *bus, *dev;
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uint8_t buf[5];
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ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
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ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
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ut_assertok(i2c_set_chip_offset_len(dev, 1));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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/* This is not supported by the uclass */
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ut_asserteq(-EINVAL, i2c_set_chip_offset_len(dev, 5));
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return 0;
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}
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DM_TEST(dm_test_i2c_offset_len, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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static int dm_test_i2c_probe_empty(struct unit_test_state *uts)
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{
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struct udevice *bus, *dev;
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ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
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/* Use test mode so that this chip address will always probe */
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sandbox_i2c_set_test_mode(bus, true);
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ut_assertok(dm_i2c_probe(bus, SANDBOX_I2C_TEST_ADDR, 0, &dev));
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sandbox_i2c_set_test_mode(bus, false);
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return 0;
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}
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DM_TEST(dm_test_i2c_probe_empty, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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static int dm_test_i2c_bytewise(struct unit_test_state *uts)
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{
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struct udevice *bus, *dev;
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struct udevice *eeprom;
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uint8_t buf[5];
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ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
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ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
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/* Tell the EEPROM to only read/write one register at a time */
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ut_assertok(uclass_first_device(UCLASS_I2C_EMUL, &eeprom));
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ut_assertnonnull(eeprom);
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sandbox_i2c_eeprom_set_test_mode(eeprom, SIE_TEST_MODE_SINGLE_BYTE);
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/* Now we only get the first byte - the rest will be 0xff */
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
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/* If we do a separate transaction for each byte, it works */
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ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
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/* This will only write A */
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ut_assertok(i2c_set_chip_flags(dev, 0));
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ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
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/* Check that the B was ignored */
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ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\0A\0\0\0", sizeof(buf)));
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/* Now write it again with the new flags, it should work */
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ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_WR_ADDRESS));
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ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
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ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_WR_ADDRESS |
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DM_I2C_CHIP_RD_ADDRESS));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "\0\0AB\0\0", sizeof(buf)));
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/* Restore defaults */
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sandbox_i2c_eeprom_set_test_mode(eeprom, SIE_TEST_MODE_NONE);
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ut_assertok(i2c_set_chip_flags(dev, 0));
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return 0;
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}
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DM_TEST(dm_test_i2c_bytewise, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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static int dm_test_i2c_offset(struct unit_test_state *uts)
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{
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struct udevice *eeprom;
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struct udevice *dev;
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uint8_t buf[5];
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ut_assertok(i2c_get_chip_for_busnum(busnum, chip, 1, &dev));
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/* Do a transfer so we can find the emulator */
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(uclass_first_device(UCLASS_I2C_EMUL, &eeprom));
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/* Offset length 0 */
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sandbox_i2c_eeprom_set_offset_len(eeprom, 0);
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ut_assertok(i2c_set_chip_offset_len(dev, 0));
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ut_assertok(dm_i2c_write(dev, 10 /* ignored */, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "AB\0\0\0\0", sizeof(buf)));
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/* Offset length 1 */
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sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
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ut_assertok(i2c_set_chip_offset_len(dev, 1));
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ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0, buf, 5));
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ut_assertok(memcmp(buf, "ABAB\0", sizeof(buf)));
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/* Offset length 2 */
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sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
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ut_assertok(i2c_set_chip_offset_len(dev, 2));
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ut_assertok(dm_i2c_write(dev, 0x210, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0x210, buf, 5));
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ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
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/* Offset length 3 */
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sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
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ut_assertok(i2c_set_chip_offset_len(dev, 2));
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ut_assertok(dm_i2c_write(dev, 0x410, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0x410, buf, 5));
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ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
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/* Offset length 4 */
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sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
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ut_assertok(i2c_set_chip_offset_len(dev, 2));
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ut_assertok(dm_i2c_write(dev, 0x420, (uint8_t *)"AB", 2));
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ut_assertok(dm_i2c_read(dev, 0x420, buf, 5));
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ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
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/* Restore defaults */
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sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
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return 0;
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}
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DM_TEST(dm_test_i2c_offset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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