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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2020, Linaro Limited
- *
- * Tests scmi_agent uclass and the SCMI drivers implemented in other
- * uclass devices probe when a SCMI server exposes resources.
- *
- * Note in test.dts the protocol@10 node in agent 1. Protocol 0x10 is not
- * implemented in U-Boot SCMI components but the implementation is exepected
- * to not complain on unknown protocol IDs, as long as it is not used. Note
- * in test.dts tests that SCMI drivers probing does not fail for such an
- * unknown SCMI protocol ID.
- */
- #include <common.h>
- #include <clk.h>
- #include <dm.h>
- #include <reset.h>
- #include <asm/scmi_test.h>
- #include <dm/device-internal.h>
- #include <dm/test.h>
- #include <linux/kconfig.h>
- #include <power/regulator.h>
- #include <test/ut.h>
- static int ut_assert_scmi_state_preprobe(struct unit_test_state *uts)
- {
- struct sandbox_scmi_service *scmi_ctx = sandbox_scmi_service_ctx();
- ut_assertnonnull(scmi_ctx);
- if (scmi_ctx->agent_count)
- ut_asserteq(2, scmi_ctx->agent_count);
- return 0;
- }
- static int ut_assert_scmi_state_postprobe(struct unit_test_state *uts,
- struct udevice *dev)
- {
- struct sandbox_scmi_devices *scmi_devices;
- struct sandbox_scmi_service *scmi_ctx;
- struct sandbox_scmi_agent *agent0;
- struct sandbox_scmi_agent *agent1;
- /* Device references to check context against test sequence */
- scmi_devices = sandbox_scmi_devices_ctx(dev);
- ut_assertnonnull(scmi_devices);
- ut_asserteq(3, scmi_devices->clk_count);
- ut_asserteq(1, scmi_devices->reset_count);
- ut_asserteq(2, scmi_devices->regul_count);
- /* State of the simulated SCMI server exposed */
- scmi_ctx = sandbox_scmi_service_ctx();
- agent0 = scmi_ctx->agent[0];
- agent1 = scmi_ctx->agent[1];
- ut_asserteq(2, scmi_ctx->agent_count);
- ut_assertnonnull(agent0);
- ut_asserteq(2, agent0->clk_count);
- ut_assertnonnull(agent0->clk);
- ut_asserteq(1, agent0->reset_count);
- ut_assertnonnull(agent0->reset);
- ut_asserteq(2, agent0->voltd_count);
- ut_assertnonnull(agent0->voltd);
- ut_assertnonnull(agent1);
- ut_assertnonnull(agent1->clk);
- ut_asserteq(1, agent1->clk_count);
- return 0;
- }
- static int load_sandbox_scmi_test_devices(struct unit_test_state *uts,
- struct udevice **dev)
- {
- int ret;
- ret = ut_assert_scmi_state_preprobe(uts);
- if (ret)
- return ret;
- ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "sandbox_scmi",
- dev));
- ut_assertnonnull(*dev);
- return ut_assert_scmi_state_postprobe(uts, *dev);
- }
- static int release_sandbox_scmi_test_devices(struct unit_test_state *uts,
- struct udevice *dev)
- {
- ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
- /* Not sure test devices are fully removed, agent may not be visible */
- return 0;
- }
- /*
- * Test SCMI states when loading and releasing resources
- * related to SCMI drivers.
- */
- static int dm_test_scmi_sandbox_agent(struct unit_test_state *uts)
- {
- struct udevice *dev = NULL;
- int ret;
- ret = load_sandbox_scmi_test_devices(uts, &dev);
- if (!ret)
- ret = release_sandbox_scmi_test_devices(uts, dev);
- return ret;
- }
- DM_TEST(dm_test_scmi_sandbox_agent, UT_TESTF_SCAN_FDT);
- static int dm_test_scmi_clocks(struct unit_test_state *uts)
- {
- struct sandbox_scmi_devices *scmi_devices;
- struct sandbox_scmi_service *scmi_ctx;
- struct sandbox_scmi_agent *agent0;
- struct sandbox_scmi_agent *agent1;
- struct udevice *dev = NULL;
- int ret_dev;
- int ret;
- ret = load_sandbox_scmi_test_devices(uts, &dev);
- if (ret)
- return ret;
- scmi_devices = sandbox_scmi_devices_ctx(dev);
- scmi_ctx = sandbox_scmi_service_ctx();
- agent0 = scmi_ctx->agent[0];
- agent1 = scmi_ctx->agent[1];
- /* Test SCMI clocks rate manipulation */
- ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
- ut_asserteq(333, clk_get_rate(&scmi_devices->clk[1]));
- ut_asserteq(44, clk_get_rate(&scmi_devices->clk[2]));
- ret_dev = clk_set_rate(&scmi_devices->clk[1], 1088);
- ut_assert(!ret_dev || ret_dev == 1088);
- ut_asserteq(1000, agent0->clk[0].rate);
- ut_asserteq(1088, agent0->clk[1].rate);
- ut_asserteq(44, agent1->clk[0].rate);
- ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
- ut_asserteq(1088, clk_get_rate(&scmi_devices->clk[1]));
- ut_asserteq(44, clk_get_rate(&scmi_devices->clk[2]));
- /* restore original rate for further tests */
- ret_dev = clk_set_rate(&scmi_devices->clk[1], 333);
- ut_assert(!ret_dev || ret_dev == 333);
- /* Test SCMI clocks gating manipulation */
- ut_assert(!agent0->clk[0].enabled);
- ut_assert(!agent0->clk[1].enabled);
- ut_assert(!agent1->clk[0].enabled);
- ut_asserteq(0, clk_enable(&scmi_devices->clk[1]));
- ut_asserteq(0, clk_enable(&scmi_devices->clk[2]));
- ut_assert(!agent0->clk[0].enabled);
- ut_assert(agent0->clk[1].enabled);
- ut_assert(agent1->clk[0].enabled);
- ut_assertok(clk_disable(&scmi_devices->clk[1]));
- ut_assertok(clk_disable(&scmi_devices->clk[2]));
- ut_assert(!agent0->clk[0].enabled);
- ut_assert(!agent0->clk[1].enabled);
- ut_assert(!agent1->clk[0].enabled);
- return release_sandbox_scmi_test_devices(uts, dev);
- }
- DM_TEST(dm_test_scmi_clocks, UT_TESTF_SCAN_FDT);
- static int dm_test_scmi_resets(struct unit_test_state *uts)
- {
- struct sandbox_scmi_devices *scmi_devices;
- struct sandbox_scmi_service *scmi_ctx;
- struct sandbox_scmi_agent *agent0;
- struct udevice *dev = NULL;
- int ret;
- ret = load_sandbox_scmi_test_devices(uts, &dev);
- if (ret)
- return ret;
- scmi_devices = sandbox_scmi_devices_ctx(dev);
- scmi_ctx = sandbox_scmi_service_ctx();
- agent0 = scmi_ctx->agent[0];
- /* Test SCMI resect controller manipulation */
- ut_assert(!agent0->reset[0].asserted)
- ut_assertok(reset_assert(&scmi_devices->reset[0]));
- ut_assert(agent0->reset[0].asserted)
- ut_assertok(reset_deassert(&scmi_devices->reset[0]));
- ut_assert(!agent0->reset[0].asserted);
- return release_sandbox_scmi_test_devices(uts, dev);
- }
- DM_TEST(dm_test_scmi_resets, UT_TESTF_SCAN_FDT);
- static int dm_test_scmi_voltage_domains(struct unit_test_state *uts)
- {
- struct sandbox_scmi_devices *scmi_devices;
- struct sandbox_scmi_service *scmi_ctx;
- struct sandbox_scmi_agent *agent0;
- struct dm_regulator_uclass_plat *uc_pdata;
- struct udevice *dev;
- struct udevice *regul0_dev;
- ut_assertok(load_sandbox_scmi_test_devices(uts, &dev));
- scmi_devices = sandbox_scmi_devices_ctx(dev);
- scmi_ctx = sandbox_scmi_service_ctx();
- agent0 = scmi_ctx->agent[0];
- /* Set/Get an SCMI voltage domain level */
- regul0_dev = scmi_devices->regul[0];
- ut_assert(regul0_dev);
- uc_pdata = dev_get_uclass_plat(regul0_dev);
- ut_assert(uc_pdata);
- ut_assertok(regulator_set_value(regul0_dev, uc_pdata->min_uV));
- ut_asserteq(agent0->voltd[0].voltage_uv, uc_pdata->min_uV);
- ut_assert(regulator_get_value(regul0_dev) == uc_pdata->min_uV);
- ut_assertok(regulator_set_value(regul0_dev, uc_pdata->max_uV));
- ut_asserteq(agent0->voltd[0].voltage_uv, uc_pdata->max_uV);
- ut_assert(regulator_get_value(regul0_dev) == uc_pdata->max_uV);
- /* Enable/disable SCMI voltage domains */
- ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
- ut_assertok(regulator_set_enable(scmi_devices->regul[1], false));
- ut_assert(!agent0->voltd[0].enabled);
- ut_assert(!agent0->voltd[1].enabled);
- ut_assertok(regulator_set_enable(scmi_devices->regul[0], true));
- ut_assert(agent0->voltd[0].enabled);
- ut_assert(!agent0->voltd[1].enabled);
- ut_assertok(regulator_set_enable(scmi_devices->regul[1], true));
- ut_assert(agent0->voltd[0].enabled);
- ut_assert(agent0->voltd[1].enabled);
- ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
- ut_assert(!agent0->voltd[0].enabled);
- ut_assert(agent0->voltd[1].enabled);
- return release_sandbox_scmi_test_devices(uts, dev);
- }
- DM_TEST(dm_test_scmi_voltage_domains, UT_TESTF_SCAN_FDT);
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