CoCalc -- clk

GitHub Repository: freebsd/freebsd-src
Path: blob/main/sys/dev/clk/clk_link.c
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/*-
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 * Copyright 2016 Michal Meloun <[email protected]>
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/kobj.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/systm.h>
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#include <machine/bus.h>
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#include <dev/clk/clk_link.h>
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static int clknode_link_init(struct clknode *clk, device_t dev);
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static int clknode_link_recalc(struct clknode *clk, uint64_t *freq);
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static int clknode_link_set_freq(struct clknode *clk, uint64_t fin,
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    uint64_t *fout, int flags, int *stop);
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static int clknode_link_set_mux(struct clknode *clk, int idx);
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static int clknode_link_set_gate(struct clknode *clk, bool enable);
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static clknode_method_t clknode_link_methods[] = {
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	/* Device interface */
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	CLKNODEMETHOD(clknode_init,	   clknode_link_init),
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	CLKNODEMETHOD(clknode_recalc_freq, clknode_link_recalc),
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	CLKNODEMETHOD(clknode_set_freq,	   clknode_link_set_freq),
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	CLKNODEMETHOD(clknode_set_gate,	   clknode_link_set_gate),
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	CLKNODEMETHOD(clknode_set_mux,	   clknode_link_set_mux),
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	CLKNODEMETHOD_END
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};
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DEFINE_CLASS_1(clknode_link, clknode_link_class, clknode_link_methods,
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   0, clknode_class);
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static int
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clknode_link_init(struct clknode *clk, device_t dev)
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{
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	return(0);
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}
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static int
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clknode_link_recalc(struct clknode *clk, uint64_t *freq)
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{
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	printf("%s: Attempt to use unresolved linked clock: %s\n", __func__,
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	    clknode_get_name(clk));
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	return (EBADF);
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}
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static int
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clknode_link_set_freq(struct clknode *clk, uint64_t fin, uint64_t *fout,
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    int flags, int *stop)
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{
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	printf("%s: Attempt to use unresolved linked clock: %s\n", __func__,
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	    clknode_get_name(clk));
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	return (EBADF);
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}
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static int
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clknode_link_set_mux(struct clknode *clk, int idx)
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{
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	printf("%s: Attempt to use unresolved linked clock: %s\n", __func__,
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	    clknode_get_name(clk));
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	return (EBADF);
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}
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static int
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clknode_link_set_gate(struct clknode *clk, bool enable)
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{
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	printf("%s: Attempt to use unresolved linked clock: %s\n", __func__,
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	    clknode_get_name(clk));
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	return (EBADF);
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}
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int
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clknode_link_register(struct clkdom *clkdom, struct clk_link_def *clkdef)
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{
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	struct clknode *clk;
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	struct clknode_init_def tmp;
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	tmp = clkdef->clkdef;
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	tmp.flags |= CLK_NODE_LINKED;
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	clk = clknode_create(clkdom, &clknode_link_class, &tmp);
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	if (clk == NULL)
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		return (1);
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	clknode_register(clkdom, clk);
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	return (0);
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}
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