diff options
Diffstat (limited to 'test/dm/spi.c')
| -rw-r--r-- | test/dm/spi.c | 87 |
1 files changed, 83 insertions, 4 deletions
diff --git a/test/dm/spi.c b/test/dm/spi.c index fb180aed1f..ee4ad3abaa 100644 --- a/test/dm/spi.c +++ b/test/dm/spi.c @@ -9,6 +9,7 @@ #include <spi.h> #include <spi_flash.h> #include <asm/state.h> +#include <asm/test.h> #include <dm/device-internal.h> #include <dm/test.h> #include <dm/uclass-internal.h> @@ -22,13 +23,10 @@ static int dm_test_spi_find(struct unit_test_state *uts) struct sandbox_state *state = state_get_current(); struct spi_slave *slave; struct udevice *bus, *dev; - const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 1; + const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 2; struct spi_cs_info info; ofnode node; - ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_SPI, busnum, - false, &bus)); - /* * The post_bind() method will bind devices to chip selects. Check * this then remove the emulation and the slave device. @@ -94,6 +92,87 @@ static int dm_test_spi_find(struct unit_test_state *uts) } DM_TEST(dm_test_spi_find, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); +/* dm_test_spi_switch_slaves - Helper function to check whether spi_claim_bus + * operates correctly with two spi slaves. + * + * Check that switching back and forth between two slaves claiming the bus + * will update dm_spi_bus->speed and sandbox_spi bus speed/mode correctly. + * + * @uts - unit test state + * @slave_a - first spi slave used for testing + * @slave_b - second spi slave used for testing + */ +static int dm_test_spi_switch_slaves(struct unit_test_state *uts, + struct spi_slave *slave_a, + struct spi_slave *slave_b) +{ + struct udevice *bus; + struct dm_spi_bus *bus_data; + + /* Check that slaves are on the same bus */ + ut_asserteq_ptr(dev_get_parent(slave_a->dev), + dev_get_parent(slave_b->dev)); + + bus = dev_get_parent(slave_a->dev); + bus_data = dev_get_uclass_priv(bus); + + ut_assertok(spi_claim_bus(slave_a)); + ut_asserteq(slave_a->max_hz, bus_data->speed); + ut_asserteq(slave_a->max_hz, sandbox_spi_get_speed(bus)); + ut_asserteq(slave_a->mode, sandbox_spi_get_mode(bus)); + spi_release_bus(slave_a); + + ut_assertok(spi_claim_bus(slave_b)); + ut_asserteq(slave_b->max_hz, bus_data->speed); + ut_asserteq(slave_b->max_hz, sandbox_spi_get_speed(bus)); + ut_asserteq(slave_b->mode, sandbox_spi_get_mode(bus)); + spi_release_bus(slave_b); + + ut_assertok(spi_claim_bus(slave_a)); + ut_asserteq(slave_a->max_hz, bus_data->speed); + ut_asserteq(slave_a->max_hz, sandbox_spi_get_speed(bus)); + ut_asserteq(slave_a->mode, sandbox_spi_get_mode(bus)); + spi_release_bus(slave_a); + + return 0; +} + +static int dm_test_spi_claim_bus(struct unit_test_state *uts) +{ + struct udevice *bus; + struct spi_slave *slave_a, *slave_b; + struct dm_spi_slave_plat *slave_plat; + const int busnum = 0, cs_a = 0, cs_b = 1, mode = 0; + + /* Get spi slave on CS0 */ + ut_assertok(spi_get_bus_and_cs(busnum, cs_a, 1000000, mode, NULL, 0, + &bus, &slave_a)); + /* Get spi slave on CS1 */ + ut_assertok(spi_get_bus_and_cs(busnum, cs_b, 1000000, mode, NULL, 0, + &bus, &slave_b)); + + /* Different max_hz, different mode. */ + ut_assert(slave_a->max_hz != slave_b->max_hz); + ut_assert(slave_a->mode != slave_b->mode); + dm_test_spi_switch_slaves(uts, slave_a, slave_b); + + /* Different max_hz, same mode. */ + slave_a->mode = slave_b->mode; + dm_test_spi_switch_slaves(uts, slave_a, slave_b); + + /* + * Same max_hz, different mode. + * Restore original mode for slave_a, from platdata. + */ + slave_plat = dev_get_parent_plat(slave_a->dev); + slave_a->mode = slave_plat->mode; + slave_a->max_hz = slave_b->max_hz; + dm_test_spi_switch_slaves(uts, slave_a, slave_b); + + return 0; +} +DM_TEST(dm_test_spi_claim_bus, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + /* Test that sandbox SPI works correctly */ static int dm_test_spi_xfer(struct unit_test_state *uts) { |