summaryrefslogtreecommitdiffstats
path: root/arch/avr32/mach-at32ap/clock.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/avr32/mach-at32ap/clock.c')
-rw-r--r--arch/avr32/mach-at32ap/clock.c334
1 files changed, 0 insertions, 334 deletions
diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c
deleted file mode 100644
index fdf1caecb7b9..000000000000
--- a/arch/avr32/mach-at32ap/clock.c
+++ /dev/null
@@ -1,334 +0,0 @@
-/*
- * Clock management for AT32AP CPUs
- *
- * Copyright (C) 2006 Atmel Corporation
- *
- * Based on arch/arm/mach-at91/clock.c
- * Copyright (C) 2005 David Brownell
- * Copyright (C) 2005 Ivan Kokshaysky
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/export.h>
-#include <linux/device.h>
-#include <linux/string.h>
-#include <linux/list.h>
-
-#include <mach/chip.h>
-
-#include "clock.h"
-
-/* at32 clock list */
-static LIST_HEAD(at32_clock_list);
-
-static DEFINE_SPINLOCK(clk_lock);
-static DEFINE_SPINLOCK(clk_list_lock);
-
-void at32_clk_register(struct clk *clk)
-{
- spin_lock(&clk_list_lock);
- /* add the new item to the end of the list */
- list_add_tail(&clk->list, &at32_clock_list);
- spin_unlock(&clk_list_lock);
-}
-
-static struct clk *__clk_get(struct device *dev, const char *id)
-{
- struct clk *clk;
-
- list_for_each_entry(clk, &at32_clock_list, list) {
- if (clk->dev == dev && strcmp(id, clk->name) == 0) {
- return clk;
- }
- }
-
- return ERR_PTR(-ENOENT);
-}
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
- struct clk *clk;
-
- spin_lock(&clk_list_lock);
- clk = __clk_get(dev, id);
- spin_unlock(&clk_list_lock);
-
- return clk;
-}
-
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
- /* clocks are static for now, we can't free them */
-}
-EXPORT_SYMBOL(clk_put);
-
-static void __clk_enable(struct clk *clk)
-{
- if (clk->parent)
- __clk_enable(clk->parent);
- if (clk->users++ == 0 && clk->mode)
- clk->mode(clk, 1);
-}
-
-int clk_enable(struct clk *clk)
-{
- unsigned long flags;
-
- if (!clk)
- return 0;
-
- spin_lock_irqsave(&clk_lock, flags);
- __clk_enable(clk);
- spin_unlock_irqrestore(&clk_lock, flags);
-
- return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-static void __clk_disable(struct clk *clk)
-{
- if (clk->users == 0) {
- printk(KERN_ERR "%s: mismatched disable\n", clk->name);
- WARN_ON(1);
- return;
- }
-
- if (--clk->users == 0 && clk->mode)
- clk->mode(clk, 0);
- if (clk->parent)
- __clk_disable(clk->parent);
-}
-
-void clk_disable(struct clk *clk)
-{
- unsigned long flags;
-
- if (IS_ERR_OR_NULL(clk))
- return;
-
- spin_lock_irqsave(&clk_lock, flags);
- __clk_disable(clk);
- spin_unlock_irqrestore(&clk_lock, flags);
-}
-EXPORT_SYMBOL(clk_disable);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
- unsigned long flags;
- unsigned long rate;
-
- if (!clk)
- return 0;
-
- spin_lock_irqsave(&clk_lock, flags);
- rate = clk->get_rate(clk);
- spin_unlock_irqrestore(&clk_lock, flags);
-
- return rate;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
- unsigned long flags, actual_rate;
-
- if (!clk)
- return 0;
-
- if (!clk->set_rate)
- return -ENOSYS;
-
- spin_lock_irqsave(&clk_lock, flags);
- actual_rate = clk->set_rate(clk, rate, 0);
- spin_unlock_irqrestore(&clk_lock, flags);
-
- return actual_rate;
-}
-EXPORT_SYMBOL(clk_round_rate);
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
- unsigned long flags;
- long ret;
-
- if (!clk)
- return 0;
-
- if (!clk->set_rate)
- return -ENOSYS;
-
- spin_lock_irqsave(&clk_lock, flags);
- ret = clk->set_rate(clk, rate, 1);
- spin_unlock_irqrestore(&clk_lock, flags);
-
- return (ret < 0) ? ret : 0;
-}
-EXPORT_SYMBOL(clk_set_rate);
-
-int clk_set_parent(struct clk *clk, struct clk *parent)
-{
- unsigned long flags;
- int ret;
-
- if (!clk)
- return 0;
-
- if (!clk->set_parent)
- return -ENOSYS;
-
- spin_lock_irqsave(&clk_lock, flags);
- ret = clk->set_parent(clk, parent);
- spin_unlock_irqrestore(&clk_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(clk_set_parent);
-
-struct clk *clk_get_parent(struct clk *clk)
-{
- return !clk ? NULL : clk->parent;
-}
-EXPORT_SYMBOL(clk_get_parent);
-
-
-
-#ifdef CONFIG_DEBUG_FS
-
-/* /sys/kernel/debug/at32ap_clk */
-
-#include <linux/io.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include "pm.h"
-
-
-#define NEST_DELTA 2
-#define NEST_MAX 6
-
-struct clkinf {
- struct seq_file *s;
- unsigned nest;
-};
-
-static void
-dump_clock(struct clk *parent, struct clkinf *r)
-{
- unsigned nest = r->nest;
- char buf[16 + NEST_MAX];
- struct clk *clk;
- unsigned i;
-
- /* skip clocks coupled to devices that aren't registered */
- if (parent->dev && !dev_name(parent->dev) && !parent->users)
- return;
-
- /* <nest spaces> name <pad to end> */
- memset(buf, ' ', sizeof(buf) - 1);
- buf[sizeof(buf) - 1] = 0;
- i = strlen(parent->name);
- memcpy(buf + nest, parent->name,
- min(i, (unsigned)(sizeof(buf) - 1 - nest)));
-
- seq_printf(r->s, "%s%c users=%2d %-3s %9ld Hz",
- buf, parent->set_parent ? '*' : ' ',
- parent->users,
- parent->users ? "on" : "off", /* NOTE: not-paranoid!! */
- clk_get_rate(parent));
- if (parent->dev)
- seq_printf(r->s, ", for %s", dev_name(parent->dev));
- seq_putc(r->s, '\n');
-
- /* cost of this scan is small, but not linear... */
- r->nest = nest + NEST_DELTA;
-
- list_for_each_entry(clk, &at32_clock_list, list) {
- if (clk->parent == parent)
- dump_clock(clk, r);
- }
- r->nest = nest;
-}
-
-static int clk_show(struct seq_file *s, void *unused)
-{
- struct clkinf r;
- int i;
- struct clk *clk;
-
- /* show all the power manager registers */
- seq_printf(s,
- "MCCTRL = %8x\n"
- "CKSEL = %8x\n"
- "CPUMASK = %8x\n"
- "HSBMASK = %8x\n"
- "PBAMASK = %8x\n"
- "PBBMASK = %8x\n"
- "PLL0 = %8x\n"
- "PLL1 = %8x\n"
- "IMR = %8x\n",
- pm_readl(MCCTRL),
- pm_readl(CKSEL),
- pm_readl(CPU_MASK),
- pm_readl(HSB_MASK),
- pm_readl(PBA_MASK),
- pm_readl(PBB_MASK),
- pm_readl(PLL0),
- pm_readl(PLL1),
- pm_readl(IMR));
- for (i = 0; i < 8; i++) {
- if (i == 5)
- continue;
- seq_printf(s, "GCCTRL%d = %8x\n", i, pm_readl(GCCTRL(i)));
- }
-
- seq_putc(s, '\n');
- r.s = s;
- r.nest = 0;
- /* protected from changes on the list while dumping */
- spin_lock(&clk_list_lock);
-
- /* show clock tree as derived from the three oscillators */
- clk = __clk_get(NULL, "osc32k");
- dump_clock(clk, &r);
- clk_put(clk);
-
- clk = __clk_get(NULL, "osc0");
- dump_clock(clk, &r);
- clk_put(clk);
-
- clk = __clk_get(NULL, "osc1");
- dump_clock(clk, &r);
- clk_put(clk);
-
- spin_unlock(&clk_list_lock);
-
- return 0;
-}
-
-static int clk_open(struct inode *inode, struct file *file)
-{
- return single_open(file, clk_show, NULL);
-}
-
-static const struct file_operations clk_operations = {
- .open = clk_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init clk_debugfs_init(void)
-{
- (void) debugfs_create_file("at32ap_clk", S_IFREG | S_IRUGO,
- NULL, NULL, &clk_operations);
-
- return 0;
-}
-postcore_initcall(clk_debugfs_init);
-
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 08:14:05 +0100