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dm: test: Add tests for the clk uclass

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Add tests of each API call using a sandbox clock device.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-07-06 12:54:24 -06:00
parent c02790ce12
commit 6a1c7cef14
7 changed files with 162 additions and 0 deletions
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85
drivers/clk/clk_sandbox.c Normal file
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/*
* (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,
};