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u-boot/test/dm/clk.c
Dario Binacchi 2983ad55a1 clk: add clk_round_rate() 
It returns the rate which will be set if you ask clk_set_rate() to set
that rate. It provides a way to query exactly what rate you'll get if
you call clk_set_rate() with that same argument.
So essentially, clk_round_rate() and clk_set_rate() are equivalent
except the former does not modify the clock hardware in any way.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
2021-01-12 10:58:04 +05:30

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Google, Inc
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <log.h>
#include <malloc.h>
#include <asm/clk.h>
#include <dm/test.h>
#include <dm/device-internal.h>
#include <linux/err.h>
#include <test/test.h>
#include <test/ut.h>
/* Base test of the clk uclass */
static int dm_test_clk_base(struct unit_test_state *uts)
{
struct udevice *dev;
struct clk clk_method1;
struct clk clk_method2;
/* Get the device using the clk device */
ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "clk-test", &dev));
/* Get the same clk port in 2 different ways and compare */
ut_assertok(clk_get_by_index(dev, 1, &clk_method1));
ut_assertok(clk_get_by_index_nodev(dev_ofnode(dev), 1, &clk_method2));
ut_asserteq(clk_is_match(&clk_method1, &clk_method2), true);
ut_asserteq(clk_method1.id, clk_method2.id);
return 0;
}
DM_TEST(dm_test_clk_base, UT_TESTF_SCAN_FDT);
static int dm_test_clk(struct unit_test_state *uts)
{
struct udevice *dev_fixed, *dev_fixed_factor, *dev_clk, *dev_test;
ulong rate;
ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-fixed",
&dev_fixed));
ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-fixed-factor",
&dev_fixed_factor));
ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-sbox",
&dev_clk));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
ut_asserteq(0, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_I2C));
ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "clk-test",
&dev_test));
ut_assertok(sandbox_clk_test_get(dev_test));
ut_assertok(sandbox_clk_test_devm_get(dev_test));
ut_assertok(sandbox_clk_test_valid(dev_test));
ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_DEVM_NULL));
ut_asserteq(0, sandbox_clk_test_set_rate(dev_test,
SANDBOX_CLK_TEST_ID_DEVM_NULL,
0));
ut_asserteq(0, sandbox_clk_test_enable(dev_test,
SANDBOX_CLK_TEST_ID_DEVM_NULL));
ut_asserteq(0, sandbox_clk_test_disable(dev_test,
SANDBOX_CLK_TEST_ID_DEVM_NULL));
ut_asserteq(1234,
sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_FIXED));
ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI));
ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C));
ut_asserteq(321, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_DEVM1));
ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_DEVM2));
rate = sandbox_clk_test_set_rate(dev_test, SANDBOX_CLK_TEST_ID_FIXED,
12345);
ut_assert(IS_ERR_VALUE(rate));
rate = sandbox_clk_test_get_rate(dev_test, SANDBOX_CLK_TEST_ID_FIXED);
ut_asserteq(1234, rate);
ut_asserteq(0, sandbox_clk_test_set_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI,
1000));
ut_asserteq(0, sandbox_clk_test_set_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C,
2000));
ut_asserteq(1000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI));
ut_asserteq(2000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C));
ut_asserteq(1000, sandbox_clk_test_set_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI,
10000));
ut_asserteq(2000, sandbox_clk_test_set_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C,
20000));
rate = sandbox_clk_test_set_rate(dev_test, SANDBOX_CLK_TEST_ID_SPI, 0);
ut_assert(IS_ERR_VALUE(rate));
rate = sandbox_clk_test_set_rate(dev_test, SANDBOX_CLK_TEST_ID_I2C, 0);
ut_assert(IS_ERR_VALUE(rate));
ut_asserteq(10000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI));
ut_asserteq(20000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C));
ut_asserteq(5000, sandbox_clk_test_round_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI,
5000));
ut_asserteq(7000, sandbox_clk_test_round_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C,
7000));
ut_asserteq(10000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI));
ut_asserteq(20000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C));
rate = sandbox_clk_test_round_rate(dev_test, SANDBOX_CLK_TEST_ID_SPI, 0);
ut_assert(IS_ERR_VALUE(rate));
rate = sandbox_clk_test_round_rate(dev_test, SANDBOX_CLK_TEST_ID_I2C, 0);
ut_assert(IS_ERR_VALUE(rate));
ut_asserteq(10000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_SPI));
ut_asserteq(20000, sandbox_clk_test_get_rate(dev_test,
SANDBOX_CLK_TEST_ID_I2C));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
ut_asserteq(10000, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(20000, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_I2C));
ut_assertok(sandbox_clk_test_enable(dev_test, SANDBOX_CLK_TEST_ID_SPI));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
ut_assertok(sandbox_clk_test_enable(dev_test, SANDBOX_CLK_TEST_ID_I2C));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
ut_assertok(sandbox_clk_test_disable(dev_test,
SANDBOX_CLK_TEST_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
ut_assertok(sandbox_clk_test_disable(dev_test,
SANDBOX_CLK_TEST_ID_I2C));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_SPI));
ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_I2C));
ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_UART2));
ut_assertok(sandbox_clk_test_free(dev_test));
ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_I2C));
ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_UART2));
ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_UART1));
ut_assertok(device_remove(dev_test, DM_REMOVE_NORMAL));
ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
SANDBOX_CLK_ID_UART1));
return 0;
}
DM_TEST(dm_test_clk, UT_TESTF_SCAN_FDT);
static int dm_test_clk_bulk(struct unit_test_state *uts)
{
struct udevice *dev_clk, *dev_test;
ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-sbox",
&dev_clk));
ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "clk-test",
&dev_test));
ut_assertok(sandbox_clk_test_get_bulk(dev_test));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
/* Fixed clock does not support enable, thus should not fail */
ut_assertok(sandbox_clk_test_enable_bulk(dev_test));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
/* Fixed clock does not support disable, thus should not fail */
ut_assertok(sandbox_clk_test_disable_bulk(dev_test));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
/* Fixed clock does not support enable, thus should not fail */
ut_assertok(sandbox_clk_test_enable_bulk(dev_test));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
/* Fixed clock does not support disable, thus should not fail */
ut_assertok(sandbox_clk_test_release_bulk(dev_test));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
ut_assertok(device_remove(dev_test, DM_REMOVE_NORMAL));
return 0;
}
DM_TEST(dm_test_clk_bulk, UT_TESTF_SCAN_FDT);
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