Merge branch 'next-samsung-clkdev-fix' into next-samsung-devel

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");