87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/*
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* (C) Copyright 2015 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <errno.h>
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#include <asm/test.h>
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struct sandbox_clk_priv {
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ulong rate;
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ulong periph_rate[PERIPH_ID_COUNT];
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};
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static ulong sandbox_clk_get_rate(struct udevice *dev)
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{
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struct sandbox_clk_priv *priv = dev_get_priv(dev);
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return priv->rate;
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}
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static ulong sandbox_clk_set_rate(struct udevice *dev, ulong rate)
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{
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struct sandbox_clk_priv *priv = dev_get_priv(dev);
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if (!rate)
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return -EINVAL;
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priv->rate = rate;
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return 0;
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}
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static ulong sandbox_get_periph_rate(struct udevice *dev, int periph)
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{
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struct sandbox_clk_priv *priv = dev_get_priv(dev);
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if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
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return -EINVAL;
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return priv->periph_rate[periph];
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}
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static ulong sandbox_set_periph_rate(struct udevice *dev, int periph,
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ulong rate)
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{
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struct sandbox_clk_priv *priv = dev_get_priv(dev);
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ulong old_rate;
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if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
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return -EINVAL;
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old_rate = priv->periph_rate[periph];
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priv->periph_rate[periph] = rate;
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return old_rate;
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}
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static int sandbox_clk_probe(struct udevice *dev)
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{
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struct sandbox_clk_priv *priv = dev_get_priv(dev);
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priv->rate = SANDBOX_CLK_RATE;
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return 0;
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}
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static struct clk_ops sandbox_clk_ops = {
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.get_rate = sandbox_clk_get_rate,
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.set_rate = sandbox_clk_set_rate,
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.get_periph_rate = sandbox_get_periph_rate,
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.set_periph_rate = sandbox_set_periph_rate,
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};
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static const struct udevice_id sandbox_clk_ids[] = {
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{ .compatible = "sandbox,clk" },
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{ }
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};
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U_BOOT_DRIVER(clk_sandbox) = {
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.name = "clk_sandbox",
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.id = UCLASS_CLK,
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.of_match = sandbox_clk_ids,
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.ops = &sandbox_clk_ops,
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.priv_auto_alloc_size = sizeof(struct sandbox_clk_priv),
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.probe = sandbox_clk_probe,
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};
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