diff options
Diffstat (limited to 'test/dm/mux-mmio.c')
| -rw-r--r-- | test/dm/mux-mmio.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/test/dm/mux-mmio.c b/test/dm/mux-mmio.c new file mode 100644 index 0000000000..fd353d8b15 --- /dev/null +++ b/test/dm/mux-mmio.c @@ -0,0 +1,138 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/ + * Jean-Jacques Hiblot <jjhiblot@ti.com> + */ + +#include <common.h> +#include <dm.h> +#include <mux.h> +#include <regmap.h> +#include <syscon.h> +#include <asm/test.h> +#include <dm/test.h> +#include <dm/device-internal.h> +#include <test/ut.h> + +static int dm_test_mux_mmio_select(struct unit_test_state *uts) +{ + struct udevice *dev, *dev_b; + struct regmap *map; + struct mux_control *ctl0_a, *ctl0_b; + struct mux_control *ctl1; + struct mux_control *ctl_err; + u32 val; + int i; + + sandbox_set_enable_memio(true); + + ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test", + &dev)); + ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "b-test", + &dev_b)); + map = syscon_regmap_lookup_by_phandle(dev, "mux-syscon"); + ut_assertok_ptr(map); + ut_assert(map); + + ut_assertok(mux_control_get(dev, "mux0", &ctl0_a)); + ut_assertok(mux_control_get(dev, "mux1", &ctl1)); + ut_asserteq(-ERANGE, mux_control_get(dev, "mux3", &ctl_err)); + ut_asserteq(-ENODATA, mux_control_get(dev, "dummy", &ctl_err)); + ut_assertok(mux_control_get(dev_b, "mux0", &ctl0_b)); + + for (i = 0; i < mux_control_states(ctl0_a); i++) { + /* Select a new state and verify the value in the regmap. */ + ut_assertok(mux_control_select(ctl0_a, i)); + ut_assertok(regmap_read(map, 0, &val)); + ut_asserteq(i, (val & 0x30) >> 4); + /* + * Deselect the mux and verify that the value in the regmap + * reflects the idle state (fixed to MUX_IDLE_AS_IS). + */ + ut_assertok(mux_control_deselect(ctl0_a)); + ut_assertok(regmap_read(map, 0, &val)); + ut_asserteq(i, (val & 0x30) >> 4); + } + + for (i = 0; i < mux_control_states(ctl1); i++) { + /* Select a new state and verify the value in the regmap. */ + ut_assertok(mux_control_select(ctl1, i)); + ut_assertok(regmap_read(map, 0xc, &val)); + ut_asserteq(i, (val & 0x1E) >> 1); + /* + * Deselect the mux and verify that the value in the regmap + * reflects the idle state (fixed to 2). + */ + ut_assertok(mux_control_deselect(ctl1)); + ut_assertok(regmap_read(map, 0xc, &val)); + ut_asserteq(2, (val & 0x1E) >> 1); + } + + /* Try unbalanced selection/deselection. */ + ut_assertok(mux_control_select(ctl0_a, 0)); + ut_asserteq(-EBUSY, mux_control_select(ctl0_a, 1)); + ut_asserteq(-EBUSY, mux_control_select(ctl0_a, 0)); + ut_assertok(mux_control_deselect(ctl0_a)); + + /* Try concurrent selection. */ + ut_assertok(mux_control_select(ctl0_a, 0)); + ut_assert(mux_control_select(ctl0_b, 0)); + ut_assertok(mux_control_deselect(ctl0_a)); + ut_assertok(mux_control_select(ctl0_b, 0)); + ut_assert(mux_control_select(ctl0_a, 0)); + ut_assertok(mux_control_deselect(ctl0_b)); + ut_assertok(mux_control_select(ctl0_a, 0)); + ut_assertok(mux_control_deselect(ctl0_a)); + + return 0; +} +DM_TEST(dm_test_mux_mmio_select, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + +/* Test that managed API for mux work correctly */ +static int dm_test_devm_mux_mmio(struct unit_test_state *uts) +{ + struct udevice *dev, *dev_b; + struct mux_control *ctl0_a, *ctl0_b; + struct mux_control *ctl1; + struct mux_control *ctl_err; + + sandbox_set_enable_memio(true); + + ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test", + &dev)); + ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "b-test", + &dev_b)); + + ctl0_a = devm_mux_control_get(dev, "mux0"); + ut_assertok_ptr(ctl0_a); + ut_assert(ctl0_a); + ctl1 = devm_mux_control_get(dev, "mux1"); + ut_assertok_ptr(ctl1); + ut_assert(ctl1); + ctl_err = devm_mux_control_get(dev, "mux3"); + ut_asserteq(-ERANGE, PTR_ERR(ctl_err)); + ctl_err = devm_mux_control_get(dev, "dummy"); + ut_asserteq(-ENODATA, PTR_ERR(ctl_err)); + + ctl0_b = devm_mux_control_get(dev_b, "mux0"); + ut_assertok_ptr(ctl0_b); + ut_assert(ctl0_b); + + /* Try concurrent selection. */ + ut_assertok(mux_control_select(ctl0_a, 0)); + ut_assert(mux_control_select(ctl0_b, 0)); + ut_assertok(mux_control_deselect(ctl0_a)); + ut_assertok(mux_control_select(ctl0_b, 0)); + ut_assert(mux_control_select(ctl0_a, 0)); + ut_assertok(mux_control_deselect(ctl0_b)); + + /* Remove one device and check that the mux is released. */ + ut_assertok(mux_control_select(ctl0_a, 0)); + ut_assert(mux_control_select(ctl0_b, 0)); + device_remove(dev, DM_REMOVE_NORMAL); + ut_assertok(mux_control_select(ctl0_b, 0)); + + device_remove(dev_b, DM_REMOVE_NORMAL); + return 0; +} +DM_TEST(dm_test_devm_mux_mmio, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); |