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u-boot/test/dm/scmi.c
Etienne Carriere 10d3e5d20b firmware: scmi: fix sandbox and related tests for clock discovery 
Updates sandbox SCMI clock driver and tests since enabling CCF will
mandate clock discovery that is all exposed SCMI clocks shall be
discovered at initialization. For this reason, sandbox SCMI clock
driver must emulate all clocks exposed by SCMI server, not only those
effectively consumed by some other U-Boot devices.

Therefore the sandbox SCMI test driver exposes 3 clocks (IDs 0, 1 and 2)
and sandbox SCMI clock consumer driver gets 2 of them.

Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2022-03-02 17:42:06 -05:00

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7.3 KiB
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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 scmi node. 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);
ut_assertnull(scmi_ctx->agent);
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 *agent;
/* Device references to check context against test sequence */
scmi_devices = sandbox_scmi_devices_ctx(dev);
ut_assertnonnull(scmi_devices);
ut_asserteq(2, 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();
ut_assertnonnull(scmi_ctx);
agent = scmi_ctx->agent;
ut_assertnonnull(agent);
ut_asserteq(3, agent->clk_count);
ut_assertnonnull(agent->clk);
ut_asserteq(1, agent->reset_count);
ut_assertnonnull(agent->reset);
ut_asserteq(2, agent->voltd_count);
ut_assertnonnull(agent->voltd);
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 *agent;
struct udevice *dev;
int ret_dev;
int ret;
ret = load_sandbox_scmi_test_devices(uts, &dev);
if (ret)
return ret;
scmi_devices = sandbox_scmi_devices_ctx(dev);
ut_assertnonnull(scmi_devices);
scmi_ctx = sandbox_scmi_service_ctx();
ut_assertnonnull(scmi_ctx);
agent = scmi_ctx->agent;
ut_assertnonnull(agent);
/* Test SCMI clocks rate manipulation */
ut_asserteq(333, agent->clk[0].rate);
ut_asserteq(200, agent->clk[1].rate);
ut_asserteq(1000, agent->clk[2].rate);
ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
ut_asserteq(333, clk_get_rate(&scmi_devices->clk[1]));
ret_dev = clk_set_rate(&scmi_devices->clk[1], 1088);
ut_assert(!ret_dev || ret_dev == 1088);
ut_asserteq(1088, agent->clk[0].rate);
ut_asserteq(200, agent->clk[1].rate);
ut_asserteq(1000, agent->clk[2].rate);
ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
ut_asserteq(1088, clk_get_rate(&scmi_devices->clk[1]));
/* 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(!agent->clk[0].enabled);
ut_assert(!agent->clk[1].enabled);
ut_assert(!agent->clk[2].enabled);
ut_asserteq(0, clk_enable(&scmi_devices->clk[1]));
ut_assert(agent->clk[0].enabled);
ut_assert(!agent->clk[1].enabled);
ut_assert(!agent->clk[2].enabled);
ut_assertok(clk_disable(&scmi_devices->clk[1]));
ut_assert(!agent->clk[0].enabled);
ut_assert(!agent->clk[1].enabled);
ut_assert(!agent->clk[2].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 *agent;
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);
ut_assertnonnull(scmi_devices);
scmi_ctx = sandbox_scmi_service_ctx();
ut_assertnonnull(scmi_ctx);
agent = scmi_ctx->agent;
ut_assertnonnull(agent);
/* Test SCMI resect controller manipulation */
ut_assert(!agent->reset[0].asserted)
ut_assertok(reset_assert(&scmi_devices->reset[0]));
ut_assert(agent->reset[0].asserted)
ut_assertok(reset_deassert(&scmi_devices->reset[0]));
ut_assert(!agent->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 *agent;
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);
ut_assertnonnull(scmi_devices);
scmi_ctx = sandbox_scmi_service_ctx();
ut_assertnonnull(scmi_ctx);
agent = scmi_ctx->agent;
ut_assertnonnull(agent);
/* 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(agent->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(agent->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(!agent->voltd[0].enabled);
ut_assert(!agent->voltd[1].enabled);
ut_assertok(regulator_set_enable(scmi_devices->regul[0], true));
ut_assert(agent->voltd[0].enabled);
ut_assert(!agent->voltd[1].enabled);
ut_assertok(regulator_set_enable(scmi_devices->regul[1], true));
ut_assert(agent->voltd[0].enabled);
ut_assert(agent->voltd[1].enabled);
ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
ut_assert(!agent->voltd[0].enabled);
ut_assert(agent->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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