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test: dm: rtc: add test of dm_rtc_read, dm_rtc_write

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Define a few aux registers and check that they can be read/written
individually. Also check that one can access the time-keeping
registers directly and get the expected results.

Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
This commit is contained in:
Rasmus Villemoes 2020-07-06 22:01:18 +02:00 • committed by Heiko Schocher
parent a3e36525a9
commit baed779138
2 changed files with 50 additions and 0 deletions
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5
arch/sandbox/include/asm/rtc.h
View file

@ -21,6 +21,11 @@ enum {
REG_RESET = 0x20,
REG_AUX0 = 0x30,
REG_AUX1,
REG_AUX2,
REG_AUX3,
REG_COUNT = 0x80,
};

45
test/dm/rtc.c
View file

@ -10,6 +10,7 @@
#include <log.h>
#include <rtc.h>
#include <asm/io.h>
#include <asm/rtc.h>
#include <asm/test.h>
#include <dm/test.h>
#include <test/ut.h>
@ -130,6 +131,50 @@ static int dm_test_rtc_set_get(struct unit_test_state *uts)
}
DM_TEST(dm_test_rtc_set_get, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
static int dm_test_rtc_read_write(struct unit_test_state *uts)
{
struct rtc_time time;
struct udevice *dev, *emul;
long old_offset;
u8 buf[4], reg;
ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
memcpy(buf, "car", 4);
ut_assertok(dm_rtc_write(dev, REG_AUX0, buf, 4));
memset(buf, '\0', sizeof(buf));
ut_assertok(dm_rtc_read(dev, REG_AUX0, buf, 4));
ut_asserteq(memcmp(buf, "car", 4), 0);
reg = 'b';
ut_assertok(dm_rtc_write(dev, REG_AUX0, &reg, 1));
memset(buf, '\0', sizeof(buf));
ut_assertok(dm_rtc_read(dev, REG_AUX0, buf, 4));
ut_asserteq(memcmp(buf, "bar", 4), 0);
reg = 't';
ut_assertok(dm_rtc_write(dev, REG_AUX2, &reg, 1));
memset(buf, '\0', sizeof(buf));
ut_assertok(dm_rtc_read(dev, REG_AUX1, buf, 3));
ut_asserteq(memcmp(buf, "at", 3), 0);
ut_assertok(i2c_emul_find(dev, &emul));
ut_assert(emul != NULL);
old_offset = sandbox_i2c_rtc_set_offset(emul, false, 0);
ut_assertok(dm_rtc_get(dev, &time));
ut_assertok(dm_rtc_read(dev, REG_SEC, &reg, 1));
ut_asserteq(time.tm_sec, reg);
ut_assertok(dm_rtc_read(dev, REG_MDAY, &reg, 1));
ut_asserteq(time.tm_mday, reg);
sandbox_i2c_rtc_set_offset(emul, true, old_offset);
return 0;
}
DM_TEST(dm_test_rtc_read_write, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Reset the time */
static int dm_test_rtc_reset(struct unit_test_state *uts)
{