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dm: i2c: EEPROM simulator allow tests visibility of addr and offset

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Improve i2c EEPROM simulator testing by providing access functions to
check the previous chip addr and offset.

Given that we can now directly test the offsets, also simplified the
offset mapping and allow for wrapping acceses.

Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Robert Beckett
2019-10-28 17:44:58 +00:00
committed by Heiko Schocher
parent 85968522b9
commit 22e93511be
3 changed files with 86 additions and 29 deletions
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50
test/dm/i2c.c
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@@ -15,6 +15,7 @@
#include <dm/test.h>
#include <dm/uclass-internal.h>
#include <dm/util.h>
#include <hexdump.h>
#include <test/ut.h>
static const int busnum;
@@ -185,35 +186,54 @@ static int dm_test_i2c_offset(struct unit_test_state *uts)
ut_assertok(i2c_set_chip_offset_len(dev, 0));
ut_assertok(dm_i2c_write(dev, 10 /* ignored */, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0\0", sizeof(buf)));
ut_asserteq_mem("AB\0\0\0\0", buf, sizeof(buf));
ut_asserteq(0, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 1 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
ut_assertok(i2c_set_chip_offset_len(dev, 1));
ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
ut_asserteq(2, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
ut_assertok(memcmp(buf, "ABAB\0", sizeof(buf)));
ut_asserteq_mem("ABAB\0", buf, sizeof(buf));
ut_asserteq(0, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 2 boundary - check model wrapping */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0xFF, (uint8_t *)"A", 1));
ut_asserteq(0xFF, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_write(dev, 0x100, (uint8_t *)"B", 1));
ut_asserteq(0x100, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_write(dev, 0x101, (uint8_t *)"C", 1));
ut_asserteq(0x101, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_read(dev, 0xFF, buf, 5));
ut_asserteq_mem("ABCAB", buf, sizeof(buf));
ut_asserteq(0xFF, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 2 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0x210, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x210, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
ut_assertok(dm_i2c_write(dev, 0x2020, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x2020, buf, 5));
ut_asserteq_mem("AB\0\0\0", buf, sizeof(buf));
ut_asserteq(0x2020, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 3 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0x410, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x410, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
sandbox_i2c_eeprom_set_offset_len(eeprom, 3);
ut_assertok(i2c_set_chip_offset_len(dev, 3));
ut_assertok(dm_i2c_write(dev, 0x303030, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x303030, buf, 5));
ut_asserteq_mem("AB\0\0\0", buf, sizeof(buf));
ut_asserteq(0x303030, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 4 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0x420, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x420, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
sandbox_i2c_eeprom_set_offset_len(eeprom, 4);
ut_assertok(i2c_set_chip_offset_len(dev, 4));
ut_assertok(dm_i2c_write(dev, 0x40404040, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x40404040, buf, 5));
ut_asserteq_mem("AB\0\0\0", buf, sizeof(buf));
ut_asserteq(0x40404040, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Restore defaults */
sandbox_i2c_eeprom_set_offset_len(eeprom, 1);