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test: dm: spi: Add testcase for spi_claim_bus()
Add testcase for spi_claim_bus(), which checks that sandbox spi bus speed/mode settings are updated correctly when multiple slaves use the bus consecutively. The following configurations are used for the two spi slaves involved: * different max_hz / different modes * different max_hz / same modes * different modes / same max_hz asm/test.h header is added in order to be able to retrieve the current speed/mode of the sandbox spi bus, via sandbox_spi_get_{speed, mode}. Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Reviewed-by: Simon Glass <sjg@chromium.org>
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@ -9,6 +9,7 @@
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#include <spi.h>
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#include <spi.h>
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#include <spi_flash.h>
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#include <spi_flash.h>
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#include <asm/state.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/device-internal.h>
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#include <dm/test.h>
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#include <dm/test.h>
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#include <dm/uclass-internal.h>
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#include <dm/uclass-internal.h>
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@ -91,6 +92,87 @@ static int dm_test_spi_find(struct unit_test_state *uts)
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}
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}
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DM_TEST(dm_test_spi_find, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
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DM_TEST(dm_test_spi_find, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
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/* dm_test_spi_switch_slaves - Helper function to check whether spi_claim_bus
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* operates correctly with two spi slaves.
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*
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* Check that switching back and forth between two slaves claiming the bus
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* will update dm_spi_bus->speed and sandbox_spi bus speed/mode correctly.
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*
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* @uts - unit test state
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* @slave_a - first spi slave used for testing
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* @slave_b - second spi slave used for testing
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*/
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static int dm_test_spi_switch_slaves(struct unit_test_state *uts,
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struct spi_slave *slave_a,
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struct spi_slave *slave_b)
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{
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struct udevice *bus;
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struct dm_spi_bus *bus_data;
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/* Check that slaves are on the same bus */
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ut_asserteq_ptr(dev_get_parent(slave_a->dev),
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dev_get_parent(slave_b->dev));
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bus = dev_get_parent(slave_a->dev);
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bus_data = dev_get_uclass_priv(bus);
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ut_assertok(spi_claim_bus(slave_a));
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ut_asserteq(slave_a->max_hz, bus_data->speed);
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ut_asserteq(slave_a->max_hz, sandbox_spi_get_speed(bus));
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ut_asserteq(slave_a->mode, sandbox_spi_get_mode(bus));
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spi_release_bus(slave_a);
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ut_assertok(spi_claim_bus(slave_b));
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ut_asserteq(slave_b->max_hz, bus_data->speed);
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ut_asserteq(slave_b->max_hz, sandbox_spi_get_speed(bus));
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ut_asserteq(slave_b->mode, sandbox_spi_get_mode(bus));
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spi_release_bus(slave_b);
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ut_assertok(spi_claim_bus(slave_a));
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ut_asserteq(slave_a->max_hz, bus_data->speed);
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ut_asserteq(slave_a->max_hz, sandbox_spi_get_speed(bus));
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ut_asserteq(slave_a->mode, sandbox_spi_get_mode(bus));
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spi_release_bus(slave_a);
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return 0;
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}
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static int dm_test_spi_claim_bus(struct unit_test_state *uts)
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{
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struct udevice *bus;
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struct spi_slave *slave_a, *slave_b;
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struct dm_spi_slave_plat *slave_plat;
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const int busnum = 0, cs_a = 0, cs_b = 1, mode = 0;
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/* Get spi slave on CS0 */
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ut_assertok(spi_get_bus_and_cs(busnum, cs_a, 1000000, mode, NULL, 0,
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&bus, &slave_a));
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/* Get spi slave on CS1 */
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ut_assertok(spi_get_bus_and_cs(busnum, cs_b, 1000000, mode, NULL, 0,
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&bus, &slave_b));
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/* Different max_hz, different mode. */
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ut_assert(slave_a->max_hz != slave_b->max_hz);
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ut_assert(slave_a->mode != slave_b->mode);
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dm_test_spi_switch_slaves(uts, slave_a, slave_b);
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/* Different max_hz, same mode. */
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slave_a->mode = slave_b->mode;
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dm_test_spi_switch_slaves(uts, slave_a, slave_b);
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/*
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* Same max_hz, different mode.
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* Restore original mode for slave_a, from platdata.
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*/
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slave_plat = dev_get_parent_plat(slave_a->dev);
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slave_a->mode = slave_plat->mode;
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slave_a->max_hz = slave_b->max_hz;
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dm_test_spi_switch_slaves(uts, slave_a, slave_b);
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return 0;
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}
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DM_TEST(dm_test_spi_claim_bus, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
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/* Test that sandbox SPI works correctly */
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/* Test that sandbox SPI works correctly */
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static int dm_test_spi_xfer(struct unit_test_state *uts)
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static int dm_test_spi_xfer(struct unit_test_state *uts)
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{
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{
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