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authorKukjin Kim <kgene.kim@samsung.com>2011-07-20 21:09:46 +0400
committerKukjin Kim <kgene.kim@samsung.com>2011-07-20 21:09:46 +0400
commitcf2e9c7b48f1e6c715e30952e5a3a5ef5cd0f8e4 (patch)
tree8e485f710138a330a56285b2a17d7debadf81c9b /arch/arm/plat-samsung
parentb5930b83c2791bd3b2da120f98f844f96fb2ca50 (diff)
parente48055999575750158108b4cfc7fc22e4c972efc (diff)
downloadlinux-cf2e9c7b48f1e6c715e30952e5a3a5ef5cd0f8e4.tar.xz
Merge branch 'next-samsung-clkdev-fix' into next-samsung-cleanup
Diffstat (limited to 'arch/arm/plat-samsung')
-rw-r--r--arch/arm/plat-samsung/clock.c98
-rw-r--r--arch/arm/plat-samsung/include/plat/clock.h3
-rw-r--r--arch/arm/plat-samsung/pwm-clock.c10
-rw-r--r--arch/arm/plat-samsung/time.c2
4 files changed, 21 insertions, 92 deletions
diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c
index 772892826ffc..aecf9e90d4fc 100644
--- a/arch/arm/plat-samsung/clock.c
+++ b/arch/arm/plat-samsung/clock.c
@@ -71,74 +71,6 @@ static int clk_null_enable(struct clk *clk, int enable)
return 0;
}
-static int dev_is_s3c_uart(struct device *dev)
-{
- struct platform_device **pdev = s3c24xx_uart_devs;
- int i;
- for (i = 0; i < ARRAY_SIZE(s3c24xx_uart_devs); i++, pdev++)
- if (*pdev && dev == &(*pdev)->dev)
- return 1;
- return 0;
-}
-
-/*
- * Serial drivers call get_clock() very early, before platform bus
- * has been set up, this requires a special check to let them get
- * a proper clock
- */
-
-static int dev_is_platform_device(struct device *dev)
-{
- return dev->bus == &platform_bus_type ||
- (dev->bus == NULL && dev_is_s3c_uart(dev));
-}
-
-/* Clock API calls */
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
- struct clk *p;
- struct clk *clk = ERR_PTR(-ENOENT);
- int idno;
-
- if (dev == NULL || !dev_is_platform_device(dev))
- idno = -1;
- else
- idno = to_platform_device(dev)->id;
-
- spin_lock(&clocks_lock);
-
- list_for_each_entry(p, &clocks, list) {
- if (p->id == idno &&
- strcmp(id, p->name) == 0 &&
- try_module_get(p->owner)) {
- clk = p;
- break;
- }
- }
-
- /* check for the case where a device was supplied, but the
- * clock that was being searched for is not device specific */
-
- if (IS_ERR(clk)) {
- list_for_each_entry(p, &clocks, list) {
- if (p->id == -1 && strcmp(id, p->name) == 0 &&
- try_module_get(p->owner)) {
- clk = p;
- break;
- }
- }
- }
-
- spin_unlock(&clocks_lock);
- return clk;
-}
-
-void clk_put(struct clk *clk)
-{
- module_put(clk->owner);
-}
-
int clk_enable(struct clk *clk)
{
if (IS_ERR(clk) || clk == NULL)
@@ -241,8 +173,6 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
return ret;
}
-EXPORT_SYMBOL(clk_get);
-EXPORT_SYMBOL(clk_put);
EXPORT_SYMBOL(clk_enable);
EXPORT_SYMBOL(clk_disable);
EXPORT_SYMBOL(clk_get_rate);
@@ -265,7 +195,6 @@ struct clk_ops clk_ops_def_setrate = {
struct clk clk_xtal = {
.name = "xtal",
- .id = -1,
.rate = 0,
.parent = NULL,
.ctrlbit = 0,
@@ -273,30 +202,25 @@ struct clk clk_xtal = {
struct clk clk_ext = {
.name = "ext",
- .id = -1,
};
struct clk clk_epll = {
.name = "epll",
- .id = -1,
};
struct clk clk_mpll = {
.name = "mpll",
- .id = -1,
.ops = &clk_ops_def_setrate,
};
struct clk clk_upll = {
.name = "upll",
- .id = -1,
.parent = NULL,
.ctrlbit = 0,
};
struct clk clk_f = {
.name = "fclk",
- .id = -1,
.rate = 0,
.parent = &clk_mpll,
.ctrlbit = 0,
@@ -304,7 +228,6 @@ struct clk clk_f = {
struct clk clk_h = {
.name = "hclk",
- .id = -1,
.rate = 0,
.parent = NULL,
.ctrlbit = 0,
@@ -313,7 +236,6 @@ struct clk clk_h = {
struct clk clk_p = {
.name = "pclk",
- .id = -1,
.rate = 0,
.parent = NULL,
.ctrlbit = 0,
@@ -322,7 +244,6 @@ struct clk clk_p = {
struct clk clk_usb_bus = {
.name = "usb-bus",
- .id = -1,
.rate = 0,
.parent = &clk_upll,
};
@@ -330,7 +251,6 @@ struct clk clk_usb_bus = {
struct clk s3c24xx_uclk = {
.name = "uclk",
- .id = -1,
};
/* initialise the clock system */
@@ -346,14 +266,11 @@ int s3c24xx_register_clock(struct clk *clk)
if (clk->enable == NULL)
clk->enable = clk_null_enable;
- /* add to the list of available clocks */
-
- /* Quick check to see if this clock has already been registered. */
- BUG_ON(clk->list.prev != clk->list.next);
-
- spin_lock(&clocks_lock);
- list_add(&clk->list, &clocks);
- spin_unlock(&clocks_lock);
+ /* fill up the clk_lookup structure and register it*/
+ clk->lookup.dev_id = clk->devname;
+ clk->lookup.con_id = clk->name;
+ clk->lookup.clk = clk;
+ clkdev_add(&clk->lookup);
return 0;
}
@@ -463,10 +380,7 @@ static int clk_debugfs_register_one(struct clk *c)
char s[255];
char *p = s;
- p += sprintf(p, "%s", c->name);
-
- if (c->id >= 0)
- sprintf(p, ":%d", c->id);
+ p += sprintf(p, "%s", c->devname);
d = debugfs_create_dir(s, pa ? pa->dent : clk_debugfs_root);
if (!d)
diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h
index 983c578b8276..87d5b38a86fb 100644
--- a/arch/arm/plat-samsung/include/plat/clock.h
+++ b/arch/arm/plat-samsung/include/plat/clock.h
@@ -10,6 +10,7 @@
*/
#include <linux/spinlock.h>
+#include <linux/clkdev.h>
struct clk;
@@ -40,6 +41,7 @@ struct clk {
struct module *owner;
struct clk *parent;
const char *name;
+ const char *devname;
int id;
int usage;
unsigned long rate;
@@ -47,6 +49,7 @@ struct clk {
struct clk_ops *ops;
int (*enable)(struct clk *, int enable);
+ struct clk_lookup lookup;
#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
struct dentry *dent; /* For visible tree hierarchy */
#endif
diff --git a/arch/arm/plat-samsung/pwm-clock.c b/arch/arm/plat-samsung/pwm-clock.c
index 46c9381e083b..f1bba88ed2f5 100644
--- a/arch/arm/plat-samsung/pwm-clock.c
+++ b/arch/arm/plat-samsung/pwm-clock.c
@@ -268,6 +268,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = {
[0] = {
.clk = {
.name = "pwm-tdiv",
+ .devname = "s3c24xx-pwm.0",
.ops = &clk_tdiv_ops,
.parent = &clk_timer_scaler[0],
},
@@ -275,6 +276,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = {
[1] = {
.clk = {
.name = "pwm-tdiv",
+ .devname = "s3c24xx-pwm.1",
.ops = &clk_tdiv_ops,
.parent = &clk_timer_scaler[0],
}
@@ -282,6 +284,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = {
[2] = {
.clk = {
.name = "pwm-tdiv",
+ .devname = "s3c24xx-pwm.2",
.ops = &clk_tdiv_ops,
.parent = &clk_timer_scaler[1],
},
@@ -289,6 +292,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = {
[3] = {
.clk = {
.name = "pwm-tdiv",
+ .devname = "s3c24xx-pwm.3",
.ops = &clk_tdiv_ops,
.parent = &clk_timer_scaler[1],
},
@@ -296,6 +300,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = {
[4] = {
.clk = {
.name = "pwm-tdiv",
+ .devname = "s3c24xx-pwm.4",
.ops = &clk_tdiv_ops,
.parent = &clk_timer_scaler[1],
},
@@ -361,26 +366,31 @@ static struct clk_ops clk_tin_ops = {
static struct clk clk_tin[] = {
[0] = {
.name = "pwm-tin",
+ .devname = "s3c24xx-pwm.0",
.id = 0,
.ops = &clk_tin_ops,
},
[1] = {
.name = "pwm-tin",
+ .devname = "s3c24xx-pwm.1",
.id = 1,
.ops = &clk_tin_ops,
},
[2] = {
.name = "pwm-tin",
+ .devname = "s3c24xx-pwm.2",
.id = 2,
.ops = &clk_tin_ops,
},
[3] = {
.name = "pwm-tin",
+ .devname = "s3c24xx-pwm.3",
.id = 3,
.ops = &clk_tin_ops,
},
[4] = {
.name = "pwm-tin",
+ .devname = "s3c24xx-pwm.4",
.id = 4,
.ops = &clk_tin_ops,
},
diff --git a/arch/arm/plat-samsung/time.c b/arch/arm/plat-samsung/time.c
index 2231d80ad817..e3bb806bbafe 100644
--- a/arch/arm/plat-samsung/time.c
+++ b/arch/arm/plat-samsung/time.c
@@ -259,6 +259,8 @@ static void __init s3c2410_timer_resources(void)
clk_enable(timerclk);
if (!use_tclk1_12()) {
+ tmpdev.id = 4;
+ tmpdev.dev.init_name = "s3c24xx-pwm.4";
tin = clk_get(&tmpdev.dev, "pwm-tin");
if (IS_ERR(tin))
panic("failed to get pwm-tin clock for system timer");