diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-05 13:25:15 +0000 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-05 13:25:27 +0000 |
commit | 7b9dd47136c07ffd883aff6926c7b281e4c1eea4 (patch) | |
tree | b835312e76fe323de3e1cbbb0d15fca5a3f7ef9c /arch/arm/plat-tcc/clock.c | |
parent | 2e0e943436912ffe0848ece58167edfe754edb96 (diff) | |
parent | 0575fb754dbfc32a01f297e778533340a533ec68 (diff) | |
download | op-kernel-dev-7b9dd47136c07ffd883aff6926c7b281e4c1eea4.zip op-kernel-dev-7b9dd47136c07ffd883aff6926c7b281e4c1eea4.tar.gz |
Merge branch 'restart' into for-linus
Conflicts:
arch/arm/mach-exynos/cpu.c
The changes to arch/arm/mach-exynos/cpu.c were moved to
mach-exynos/common.c.
Diffstat (limited to 'arch/arm/plat-tcc/clock.c')
-rw-r--r-- | arch/arm/plat-tcc/clock.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/arch/arm/plat-tcc/clock.c b/arch/arm/plat-tcc/clock.c deleted file mode 100644 index f3ced10..0000000 --- a/arch/arm/plat-tcc/clock.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Clock framework for Telechips SoCs - * Based on arch/arm/plat-mxc/clock.c - * - * Copyright (C) 2004 - 2005 Nokia corporation - * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> - * Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com> - * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved. - * Copyright 2008 Juergen Beisert, kernel@pengutronix.de - * Copyright 2010 Hans J. Koch, hjk@linutronix.de - * - * Licensed under the terms of the GPL v2. - */ - -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/string.h> - -#include <mach/clock.h> -#include <mach/hardware.h> - -static DEFINE_MUTEX(clocks_mutex); - -/*------------------------------------------------------------------------- - * Standard clock functions defined in include/linux/clk.h - *-------------------------------------------------------------------------*/ - -static void __clk_disable(struct clk *clk) -{ - BUG_ON(clk->refcount == 0); - - if (!(--clk->refcount) && clk->disable) { - /* Unconditionally disable the clock in hardware */ - clk->disable(clk); - /* recursively disable parents */ - if (clk->parent) - __clk_disable(clk->parent); - } -} - -static int __clk_enable(struct clk *clk) -{ - int ret = 0; - - if (clk->refcount++ == 0 && clk->enable) { - if (clk->parent) - ret = __clk_enable(clk->parent); - if (ret) - return ret; - else - return clk->enable(clk); - } - - return 0; -} - -/* This function increments the reference count on the clock and enables the - * clock if not already enabled. The parent clock tree is recursively enabled - */ -int clk_enable(struct clk *clk) -{ - int ret = 0; - - if (!clk) - return -EINVAL; - - mutex_lock(&clocks_mutex); - ret = __clk_enable(clk); - mutex_unlock(&clocks_mutex); - - return ret; -} -EXPORT_SYMBOL_GPL(clk_enable); - -/* This function decrements the reference count on the clock and disables - * the clock when reference count is 0. The parent clock tree is - * recursively disabled - */ -void clk_disable(struct clk *clk) -{ - if (!clk) - return; - - mutex_lock(&clocks_mutex); - __clk_disable(clk); - mutex_unlock(&clocks_mutex); -} -EXPORT_SYMBOL_GPL(clk_disable); - -/* Retrieve the *current* clock rate. If the clock itself - * does not provide a special calculation routine, ask - * its parent and so on, until one is able to return - * a valid clock rate - */ -unsigned long clk_get_rate(struct clk *clk) -{ - if (!clk) - return 0UL; - - if (clk->get_rate) - return clk->get_rate(clk); - - return clk_get_rate(clk->parent); -} -EXPORT_SYMBOL_GPL(clk_get_rate); - -/* Round the requested clock rate to the nearest supported - * rate that is less than or equal to the requested rate. - * This is dependent on the clock's current parent. - */ -long clk_round_rate(struct clk *clk, unsigned long rate) -{ - if (!clk) - return 0; - if (!clk->round_rate) - return 0; - - return clk->round_rate(clk, rate); -} -EXPORT_SYMBOL_GPL(clk_round_rate); - -/* Set the clock to the requested clock rate. The rate must - * match a supported rate exactly based on what clk_round_rate returns - */ -int clk_set_rate(struct clk *clk, unsigned long rate) -{ - int ret = -EINVAL; - - if (!clk) - return ret; - if (!clk->set_rate || !rate) - return ret; - - mutex_lock(&clocks_mutex); - ret = clk->set_rate(clk, rate); - mutex_unlock(&clocks_mutex); - - return ret; -} -EXPORT_SYMBOL_GPL(clk_set_rate); - -/* Set the clock's parent to another clock source */ -int clk_set_parent(struct clk *clk, struct clk *parent) -{ - struct clk *old; - int ret = -EINVAL; - - if (!clk) - return ret; - if (!clk->set_parent || !parent) - return ret; - - mutex_lock(&clocks_mutex); - old = clk->parent; - if (clk->refcount) - __clk_enable(parent); - ret = clk->set_parent(clk, parent); - if (ret) - old = parent; - if (clk->refcount) - __clk_disable(old); - mutex_unlock(&clocks_mutex); - - return ret; -} -EXPORT_SYMBOL_GPL(clk_set_parent); - -/* Retrieve the clock's parent clock source */ -struct clk *clk_get_parent(struct clk *clk) -{ - if (!clk) - return NULL; - - return clk->parent; -} -EXPORT_SYMBOL_GPL(clk_get_parent); |