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r: 191594
b: refs/heads/master
c: d28c145
h: refs/heads/master
v: v3
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Paul Mundt committed Mar 10, 2010
1 parent 659c321 commit 012892d
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Showing 8 changed files with 242 additions and 64 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: ec0ffe2ee0e0fb9da4409d86bfd72636450f32df
refs/heads/master: d28c145debb1bd53cde63ac8bccc192e3e00067e
35 changes: 35 additions & 0 deletions trunk/arch/sh/include/asm/clkdev.h
Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
/*
* arch/sh/include/asm/clkdev.h
*
* Cloned from arch/arm/include/asm/clkdev.h:
*
* Copyright (C) 2008 Russell King.
*
* 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.
*
* Helper for the clk API to assist looking up a struct clk.
*/
#ifndef __ASM_CLKDEV_H
#define __ASM_CLKDEV_H

struct clk;

struct clk_lookup {
struct list_head node;
const char *dev_id;
const char *con_id;
struct clk *clk;
};

struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
const char *dev_fmt, ...);

void clkdev_add(struct clk_lookup *cl);
void clkdev_drop(struct clk_lookup *cl);

void clkdev_add_table(struct clk_lookup *, size_t);
int clk_add_alias(const char *, const char *, char *, struct device *);

#endif
7 changes: 0 additions & 7 deletions trunk/arch/sh/include/asm/clock.h
Original file line number Diff line number Diff line change
Expand Up @@ -45,13 +45,6 @@ struct clk {
struct cpufreq_frequency_table *freq_table;
};

struct clk_lookup {
struct list_head node;
const char *dev_id;
const char *con_id;
struct clk *clk;
};

#define CLK_ENABLE_ON_INIT (1 << 0)

/* Should be defined by processor-specific code */
Expand Down
2 changes: 1 addition & 1 deletion trunk/arch/sh/kernel/Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ endif

CFLAGS_REMOVE_return_address.o = -pg

obj-y := debugtraps.o dma-nommu.o dumpstack.o \
obj-y := clkdev.o debugtraps.o dma-nommu.o dumpstack.o \
idle.o io.o io_generic.o irq.o \
irq_$(BITS).o machvec.o nmi_debug.o process.o \
process_$(BITS).o ptrace_$(BITS).o \
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169 changes: 169 additions & 0 deletions trunk/arch/sh/kernel/clkdev.c
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@@ -0,0 +1,169 @@
/*
* arch/sh/kernel/clkdev.c
*
* Cloned from arch/arm/common/clkdev.c:
*
* Copyright (C) 2008 Russell King.
*
* 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.
*
* Helper for the clk API to assist looking up a struct clk.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/string.h>
#include <linux/mutex.h>
#include <linux/clk.h>
#include <linux/slab.h>
#include <linux/bootmem.h>
#include <linux/mm.h>
#include <asm/clock.h>
#include <asm/clkdev.h>

static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);

/*
* Find the correct struct clk for the device and connection ID.
* We do slightly fuzzy matching here:
* An entry with a NULL ID is assumed to be a wildcard.
* If an entry has a device ID, it must match
* If an entry has a connection ID, it must match
* Then we take the most specific entry - with the following
* order of precidence: dev+con > dev only > con only.
*/
static struct clk *clk_find(const char *dev_id, const char *con_id)
{
struct clk_lookup *p;
struct clk *clk = NULL;
int match, best = 0;

list_for_each_entry(p, &clocks, node) {
match = 0;
if (p->dev_id) {
if (!dev_id || strcmp(p->dev_id, dev_id))
continue;
match += 2;
}
if (p->con_id) {
if (!con_id || strcmp(p->con_id, con_id))
continue;
match += 1;
}
if (match == 0)
continue;

if (match > best) {
clk = p->clk;
best = match;
}
}
return clk;
}

struct clk *clk_get_sys(const char *dev_id, const char *con_id)
{
struct clk *clk;

mutex_lock(&clocks_mutex);
clk = clk_find(dev_id, con_id);
mutex_unlock(&clocks_mutex);

return clk ? clk : ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL(clk_get_sys);

void clkdev_add(struct clk_lookup *cl)
{
mutex_lock(&clocks_mutex);
list_add_tail(&cl->node, &clocks);
mutex_unlock(&clocks_mutex);
}
EXPORT_SYMBOL(clkdev_add);

void __init clkdev_add_table(struct clk_lookup *cl, size_t num)
{
mutex_lock(&clocks_mutex);
while (num--) {
list_add_tail(&cl->node, &clocks);
cl++;
}
mutex_unlock(&clocks_mutex);
}

#define MAX_DEV_ID 20
#define MAX_CON_ID 16

struct clk_lookup_alloc {
struct clk_lookup cl;
char dev_id[MAX_DEV_ID];
char con_id[MAX_CON_ID];
};

struct clk_lookup * __init_refok
clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
{
struct clk_lookup_alloc *cla;

if (!slab_is_available())
cla = alloc_bootmem_low_pages(sizeof(*cla));
else
cla = kzalloc(sizeof(*cla), GFP_KERNEL);

if (!cla)
return NULL;

cla->cl.clk = clk;
if (con_id) {
strlcpy(cla->con_id, con_id, sizeof(cla->con_id));
cla->cl.con_id = cla->con_id;
}

if (dev_fmt) {
va_list ap;

va_start(ap, dev_fmt);
vscnprintf(cla->dev_id, sizeof(cla->dev_id), dev_fmt, ap);
cla->cl.dev_id = cla->dev_id;
va_end(ap);
}

return &cla->cl;
}
EXPORT_SYMBOL(clkdev_alloc);

int clk_add_alias(const char *alias, const char *alias_dev_name, char *id,
struct device *dev)
{
struct clk *r = clk_get(dev, id);
struct clk_lookup *l;

if (IS_ERR(r))
return PTR_ERR(r);

l = clkdev_alloc(r, alias, alias_dev_name);
clk_put(r);
if (!l)
return -ENODEV;
clkdev_add(l);
return 0;
}
EXPORT_SYMBOL(clk_add_alias);

/*
* clkdev_drop - remove a clock dynamically allocated
*/
void clkdev_drop(struct clk_lookup *cl)
{
mutex_lock(&clocks_mutex);
list_del(&cl->node);
mutex_unlock(&clocks_mutex);
kfree(cl);
}
EXPORT_SYMBOL(clkdev_drop);
55 changes: 1 addition & 54 deletions trunk/arch/sh/kernel/cpu/clock.c
Original file line number Diff line number Diff line change
Expand Up @@ -10,10 +10,6 @@
*
* Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com>
*
* With clkdev bits:
*
* Copyright (C) 2008 Russell King.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
Expand All @@ -30,6 +26,7 @@
#include <linux/platform_device.h>
#include <linux/debugfs.h>
#include <linux/cpufreq.h>
#include <linux/clk.h>
#include <asm/clock.h>
#include <asm/machvec.h>

Expand Down Expand Up @@ -397,56 +394,6 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
}
EXPORT_SYMBOL_GPL(clk_round_rate);

/*
* Find the correct struct clk for the device and connection ID.
* We do slightly fuzzy matching here:
* An entry with a NULL ID is assumed to be a wildcard.
* If an entry has a device ID, it must match
* If an entry has a connection ID, it must match
* Then we take the most specific entry - with the following
* order of precidence: dev+con > dev only > con only.
*/
static struct clk *clk_find(const char *dev_id, const char *con_id)
{
struct clk_lookup *p;
struct clk *clk = NULL;
int match, best = 0;

list_for_each_entry(p, &clock_list, node) {
match = 0;
if (p->dev_id) {
if (!dev_id || strcmp(p->dev_id, dev_id))
continue;
match += 2;
}
if (p->con_id) {
if (!con_id || strcmp(p->con_id, con_id))
continue;
match += 1;
}
if (match == 0)
continue;

if (match > best) {
clk = p->clk;
best = match;
}
}
return clk;
}

struct clk *clk_get_sys(const char *dev_id, const char *con_id)
{
struct clk *clk;

mutex_lock(&clock_list_sem);
clk = clk_find(dev_id, con_id);
mutex_unlock(&clock_list_sem);

return clk ? clk : ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL_GPL(clk_get_sys);

/*
* Returns a clock. Note that we first try to use device id on the bus
* and clock name. If this fails, we try to use clock name only.
Expand Down
5 changes: 5 additions & 0 deletions trunk/arch/sh/mm/uncached.c
Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
#include <linux/init.h>
#include <asm/sizes.h>
#include <asm/page.h>
#include <asm/addrspace.h>

/*
* This is the offset of the uncached section from its cached alias.
Expand All @@ -23,7 +24,11 @@ int virt_addr_uncached(unsigned long kaddr)

void __init uncached_init(void)
{
#ifdef CONFIG_29BIT
uncached_start = P2SEG;
#else
uncached_start = memory_end;
#endif
uncached_end = uncached_start + uncached_size;
}

Expand Down
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