diff options
Diffstat (limited to 'arch/arm/mach-msm/clock.c')
-rw-r--r-- | arch/arm/mach-msm/clock.c | 166 |
1 files changed, 5 insertions, 161 deletions
diff --git a/arch/arm/mach-msm/clock.c b/arch/arm/mach-msm/clock.c index d9145dfc2a3..35ea02b5248 100644 --- a/arch/arm/mach-msm/clock.c +++ b/arch/arm/mach-msm/clock.c @@ -1,7 +1,7 @@ /* arch/arm/mach-msm/clock.c * * Copyright (C) 2007 Google, Inc. - * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved. + * Copyright (c) 2007-2012, The Linux Foundation. All rights reserved. * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and @@ -14,171 +14,15 @@ * */ -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/err.h> -#include <linux/spinlock.h> -#include <linux/pm_qos.h> -#include <linux/mutex.h> -#include <linux/clk.h> -#include <linux/string.h> +#include <linux/clk-provider.h> #include <linux/module.h> -#include <linux/clkdev.h> #include "clock.h" -static DEFINE_MUTEX(clocks_mutex); -static DEFINE_SPINLOCK(clocks_lock); -static LIST_HEAD(clocks); - -/* - * Standard clock functions defined in include/linux/clk.h - */ -int clk_enable(struct clk *clk) -{ - unsigned long flags; - spin_lock_irqsave(&clocks_lock, flags); - clk->count++; - if (clk->count == 1) - clk->ops->enable(clk->id); - spin_unlock_irqrestore(&clocks_lock, flags); - return 0; -} -EXPORT_SYMBOL(clk_enable); - -void clk_disable(struct clk *clk) -{ - unsigned long flags; - spin_lock_irqsave(&clocks_lock, flags); - BUG_ON(clk->count == 0); - clk->count--; - if (clk->count == 0) - clk->ops->disable(clk->id); - spin_unlock_irqrestore(&clocks_lock, flags); -} -EXPORT_SYMBOL(clk_disable); - int clk_reset(struct clk *clk, enum clk_reset_action action) { - return clk->ops->reset(clk->remote_id, action); + struct clk_hw *hw = __clk_get_hw(clk); + struct msm_clk *m = to_msm_clk(hw); + return m->reset(hw, action); } EXPORT_SYMBOL(clk_reset); - -unsigned long clk_get_rate(struct clk *clk) -{ - return clk->ops->get_rate(clk->id); -} -EXPORT_SYMBOL(clk_get_rate); - -int clk_set_rate(struct clk *clk, unsigned long rate) -{ - int ret; - if (clk->flags & CLKFLAG_MAX) { - ret = clk->ops->set_max_rate(clk->id, rate); - if (ret) - return ret; - } - if (clk->flags & CLKFLAG_MIN) { - ret = clk->ops->set_min_rate(clk->id, rate); - if (ret) - return ret; - } - - if (clk->flags & CLKFLAG_MAX || clk->flags & CLKFLAG_MIN) - return ret; - - return clk->ops->set_rate(clk->id, rate); -} -EXPORT_SYMBOL(clk_set_rate); - -long clk_round_rate(struct clk *clk, unsigned long rate) -{ - return clk->ops->round_rate(clk->id, rate); -} -EXPORT_SYMBOL(clk_round_rate); - -int clk_set_min_rate(struct clk *clk, unsigned long rate) -{ - return clk->ops->set_min_rate(clk->id, rate); -} -EXPORT_SYMBOL(clk_set_min_rate); - -int clk_set_max_rate(struct clk *clk, unsigned long rate) -{ - return clk->ops->set_max_rate(clk->id, rate); -} -EXPORT_SYMBOL(clk_set_max_rate); - -int clk_set_parent(struct clk *clk, struct clk *parent) -{ - return -ENOSYS; -} -EXPORT_SYMBOL(clk_set_parent); - -struct clk *clk_get_parent(struct clk *clk) -{ - return ERR_PTR(-ENOSYS); -} -EXPORT_SYMBOL(clk_get_parent); - -int clk_set_flags(struct clk *clk, unsigned long flags) -{ - if (clk == NULL || IS_ERR(clk)) - return -EINVAL; - return clk->ops->set_flags(clk->id, flags); -} -EXPORT_SYMBOL(clk_set_flags); - -/* EBI1 is the only shared clock that several clients want to vote on as of - * this commit. If this changes in the future, then it might be better to - * make clk_min_rate handle the voting or make ebi1_clk_set_min_rate more - * generic to support different clocks. - */ -static struct clk *ebi1_clk; - -void __init msm_clock_init(struct clk_lookup *clock_tbl, unsigned num_clocks) -{ - unsigned n; - - mutex_lock(&clocks_mutex); - for (n = 0; n < num_clocks; n++) { - clkdev_add(&clock_tbl[n]); - list_add_tail(&clock_tbl[n].clk->list, &clocks); - } - mutex_unlock(&clocks_mutex); - - ebi1_clk = clk_get(NULL, "ebi1_clk"); - BUG_ON(ebi1_clk == NULL); - -} - -/* The bootloader and/or AMSS may have left various clocks enabled. - * Disable any clocks that belong to us (CLKFLAG_AUTO_OFF) but have - * not been explicitly enabled by a clk_enable() call. - */ -static int __init clock_late_init(void) -{ - unsigned long flags; - struct clk *clk; - unsigned count = 0; - - clock_debug_init(); - mutex_lock(&clocks_mutex); - list_for_each_entry(clk, &clocks, list) { - clock_debug_add(clk); - if (clk->flags & CLKFLAG_AUTO_OFF) { - spin_lock_irqsave(&clocks_lock, flags); - if (!clk->count) { - count++; - clk->ops->auto_off(clk->id); - } - spin_unlock_irqrestore(&clocks_lock, flags); - } - } - mutex_unlock(&clocks_mutex); - pr_info("clock_late_init() disabled %d unused clocks\n", count); - return 0; -} - -late_initcall(clock_late_init); - |