test: dm: spi: add testcase for spi_set_wordlen()

Add a unit test to verify that the SPI word length configuration is
correctly handled by the SPI uclass and successfully passed down to
the sandbox driver.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Simon Glass <simon.glass@canonical.com>

diff --git a/test/dm/spi.c b/test/dm/spi.c
index 249a9238fedccd0402aeb55d962f8dfb46381460..a89ba06274fc9826bbd4942f94c8918b4d79aea2 100644 (file)
--- a/test/dm/spi.c
+++ b/test/dm/spi.c
@@ -170,6 +170,22 @@ static int dm_test_spi_claim_bus(struct unit_test_state *uts)
 }
 DM_TEST(dm_test_spi_claim_bus, UTF_SCAN_PDATA | UTF_SCAN_FDT);
 
+static int dm_test_spi_set_wordlen(struct unit_test_state *uts)
+{
+       struct spi_slave *slave;
+       struct udevice *bus;
+       const int busnum = 0, cs = 0;
+
+       ut_assertok(spi_get_bus_and_cs(busnum, cs, &bus, &slave));
+       ut_assertok(spi_set_wordlen(slave, 8));
+       ut_asserteq(8, sandbox_spi_get_wordlen(slave->dev));
+       ut_assertok(spi_set_wordlen(slave, 9));
+       ut_asserteq(9, sandbox_spi_get_wordlen(slave->dev));
+
+       return 0;
+}
+DM_TEST(dm_test_spi_set_wordlen, UTF_SCAN_PDATA | UTF_SCAN_FDT);
+
 /* Test that sandbox SPI works correctly */
 static int dm_test_spi_xfer(struct unit_test_state *uts)
 {