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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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71a06da08c
People often point to the Integrator/Versatile/Realview implementations to justify using the consumer name as the sole selector for clocks. Eliminate this excuse by changing the Versatile implementation, so it provides a better example of how it should be done. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/*
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* linux/arch/arm/mach-versatile/clock.c
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*
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* Copyright (C) 2004 ARM Limited.
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* Written by Deep Blue Solutions Limited.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/errno.h>
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#include <linux/err.h>
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#include <linux/string.h>
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#include <linux/clk.h>
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#include <linux/mutex.h>
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#include <asm/clkdev.h>
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#include <asm/hardware/icst307.h>
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#include "clock.h"
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int clk_enable(struct clk *clk)
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{
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return 0;
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}
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EXPORT_SYMBOL(clk_enable);
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void clk_disable(struct clk *clk)
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{
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}
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EXPORT_SYMBOL(clk_disable);
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unsigned long clk_get_rate(struct clk *clk)
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{
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return clk->rate;
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}
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EXPORT_SYMBOL(clk_get_rate);
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long clk_round_rate(struct clk *clk, unsigned long rate)
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{
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struct icst307_vco vco;
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vco = icst307_khz_to_vco(clk->params, rate / 1000);
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return icst307_khz(clk->params, vco) * 1000;
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}
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EXPORT_SYMBOL(clk_round_rate);
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int clk_set_rate(struct clk *clk, unsigned long rate)
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{
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int ret = -EIO;
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if (clk->setvco) {
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struct icst307_vco vco;
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vco = icst307_khz_to_vco(clk->params, rate / 1000);
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clk->rate = icst307_khz(clk->params, vco) * 1000;
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clk->setvco(clk, vco);
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ret = 0;
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}
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return ret;
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}
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EXPORT_SYMBOL(clk_set_rate);
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