Commit 6a1c7cef authored by Simon Glass's avatar Simon Glass
Browse files

dm: test: Add tests for the clk uclass



Add tests of each API call using a sandbox clock device.
Signed-off-by: default avatarSimon Glass <sjg@chromium.org>
parent c02790ce
......@@ -105,6 +105,10 @@
compatible = "denx,u-boot-fdt-test";
};
clk@0 {
compatible = "sandbox,clk";
};
eth@10002000 {
compatible = "sandbox,eth";
reg = <0x10002000 0x1000>;
......
......@@ -17,6 +17,17 @@
#define SANDBOX_PCI_CLASS_CODE PCI_CLASS_CODE_COMM
#define SANDBOX_PCI_CLASS_SUB_CODE PCI_CLASS_SUB_CODE_COMM_SERIAL
#define SANDBOX_CLK_RATE 32768
enum {
PERIPH_ID_FIRST = 0,
PERIPH_ID_SPI = PERIPH_ID_FIRST,
PERIPH_ID_I2C,
PERIPH_ID_PCI,
PERIPH_ID_COUNT,
};
/**
* sandbox_i2c_set_test_mode() - set test mode for running unit tests
*
......
......@@ -45,3 +45,4 @@ CONFIG_UNIT_TEST=y
CONFIG_UT_TIME=y
CONFIG_UT_DM=y
CONFIG_UT_ENV=y
CONFIG_CLK=y
......@@ -6,3 +6,4 @@
#
obj-$(CONFIG_CLK) += clk-uclass.o
obj-$(CONFIG_SANDBOX) += clk_sandbox.o
/*
* (C) Copyright 2015 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <errno.h>
#include <asm/test.h>
struct sandbox_clk_priv {
ulong rate;
ulong periph_rate[PERIPH_ID_COUNT];
};
static ulong sandbox_clk_get_rate(struct udevice *dev)
{
struct sandbox_clk_priv *priv = dev_get_priv(dev);
return priv->rate;
}
static ulong sandbox_clk_set_rate(struct udevice *dev, ulong rate)
{
struct sandbox_clk_priv *priv = dev_get_priv(dev);
if (!rate)
return -EINVAL;
priv->rate = rate;
return 0;
}
ulong sandbox_get_periph_rate(struct udevice *dev, int periph)
{
struct sandbox_clk_priv *priv = dev_get_priv(dev);
if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
return -EINVAL;
return priv->periph_rate[periph];
}
ulong sandbox_set_periph_rate(struct udevice *dev, int periph, ulong rate)
{
struct sandbox_clk_priv *priv = dev_get_priv(dev);
ulong old_rate;
if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
return -EINVAL;
old_rate = priv->periph_rate[periph];
priv->periph_rate[periph] = rate;
return old_rate;
}
static int sandbox_clk_probe(struct udevice *dev)
{
struct sandbox_clk_priv *priv = dev_get_priv(dev);
priv->rate = SANDBOX_CLK_RATE;
return 0;
}
static struct clk_ops sandbox_clk_ops = {
.get_rate = sandbox_clk_get_rate,
.set_rate = sandbox_clk_set_rate,
.get_periph_rate = sandbox_get_periph_rate,
.set_periph_rate = sandbox_set_periph_rate,
};
static const struct udevice_id sandbox_clk_ids[] = {
{ .compatible = "sandbox,clk" },
{ }
};
U_BOOT_DRIVER(clk_sandbox) = {
.name = "clk_sandbox",
.id = UCLASS_CLK,
.of_match = sandbox_clk_ids,
.ops = &sandbox_clk_ops,
.priv_auto_alloc_size = sizeof(struct sandbox_clk_priv),
.probe = sandbox_clk_probe,
};
......@@ -15,6 +15,7 @@ obj-$(CONFIG_UT_DM) += test-uclass.o
# subsystem you must add sandbox tests here.
obj-$(CONFIG_UT_DM) += core.o
ifneq ($(CONFIG_SANDBOX),)
obj-$(CONFIG_CLK) += clk.o
obj-$(CONFIG_DM_ETH) += eth.o
obj-$(CONFIG_DM_GPIO) += gpio.o
obj-$(CONFIG_DM_I2C) += i2c.o
......
/*
* Copyright (C) 2015 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <asm/test.h>
#include <dm/test.h>
#include <linux/err.h>
#include <test/ut.h>
/* Test that we can find and adjust clocks */
static int dm_test_clk_base(struct unit_test_state *uts)
{
struct udevice *clk;
ulong rate;
ut_assertok(uclass_get_device(UCLASS_CLK, 0, &clk));
rate = clk_get_rate(clk);
ut_asserteq(SANDBOX_CLK_RATE, rate);
ut_asserteq(-EINVAL, clk_set_rate(clk, 0));
ut_assertok(clk_set_rate(clk, rate * 2));
ut_asserteq(SANDBOX_CLK_RATE * 2, clk_get_rate(clk));
return 0;
}
DM_TEST(dm_test_clk_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that peripheral clocks work as expected */
static int dm_test_clk_periph(struct unit_test_state *uts)
{
struct udevice *clk;
ulong rate;
ut_assertok(uclass_get_device(UCLASS_CLK, 0, &clk));
rate = clk_set_periph_rate(clk, PERIPH_ID_COUNT, 123);
ut_asserteq(-EINVAL, rate);
ut_asserteq(1, IS_ERR_VALUE(rate));
rate = clk_set_periph_rate(clk, PERIPH_ID_SPI, 123);
ut_asserteq(0, rate);
ut_asserteq(123, clk_get_periph_rate(clk, PERIPH_ID_SPI));
rate = clk_set_periph_rate(clk, PERIPH_ID_SPI, 1234);
ut_asserteq(123, rate);
rate = clk_set_periph_rate(clk, PERIPH_ID_I2C, 567);
rate = clk_set_periph_rate(clk, PERIPH_ID_SPI, 1234);
ut_asserteq(1234, rate);
ut_asserteq(567, clk_get_periph_rate(clk, PERIPH_ID_I2C));
return 0;
}
DM_TEST(dm_test_clk_periph, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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