/* 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
*
*/
-#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);
-
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