Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3a38e4be76e86c7b94c36dc8f3ce489987da24e4
Commit: 3a38e4be76e86c7b94c36dc8f3ce489987da24e4
Parent: c27cb681ac1598352569f75cb19850a12b7ef102
Author: Ben Dooks <[EMAIL PROTECTED]>
AuthorDate: Mon Jan 28 13:01:34 2008 +0100
Committer: Russell King <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 13:20:52 2008 +0000
[ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code
Merge together the bits of the S3C2440 and S3C2442 clock code
that can be.
Signed-off-by: Ben Dooks <[EMAIL PROTECTED]>
Signed-off-by: Russell King <[EMAIL PROTECTED]>
---
arch/arm/mach-s3c2440/clock.c | 22 +-------
arch/arm/mach-s3c2442/clock.c | 22 +-------
arch/arm/plat-s3c24xx/Makefile | 1 +
arch/arm/plat-s3c24xx/s3c244x-clock.c | 100 +++++++++++++++++++++++++++++++++
4 files changed, 103 insertions(+), 42 deletions(-)
diff --git a/arch/arm/mach-s3c2440/clock.c b/arch/arm/mach-s3c2440/clock.c
index 79e2ea4..184d804 100644
--- a/arch/arm/mach-s3c2440/clock.c
+++ b/arch/arm/mach-s3c2440/clock.c
@@ -111,14 +111,9 @@ static struct clk s3c2440_clk_ac97 = {
static int s3c2440_clk_add(struct sys_device *sysdev)
{
- unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
- unsigned long clkdivn;
+ struct clk *clock_upll;
struct clk *clock_h;
struct clk *clock_p;
- struct clk *clock_upll;
-
- printk("S3C2440: Clock Support, DVS %s\n",
- (camdivn & S3C2440_CAMDIVN_DVSEN) ? "on" : "off");
clock_p = clk_get(NULL, "pclk");
clock_h = clk_get(NULL, "hclk");
@@ -129,21 +124,6 @@ static int s3c2440_clk_add(struct sys_device *sysdev)
return -EINVAL;
}
- /* check rate of UPLL, and if it is near 96MHz, then change
- * to using half the UPLL rate for the system */
-
- if (clk_get_rate(clock_upll) > (94 * MHZ)) {
- clk_usb_bus.rate = clk_get_rate(clock_upll) / 2;
-
- mutex_lock(&clocks_mutex);
-
- clkdivn = __raw_readl(S3C2410_CLKDIVN);
- clkdivn |= S3C2440_CLKDIVN_UCLK;
- __raw_writel(clkdivn, S3C2410_CLKDIVN);
-
- mutex_unlock(&clocks_mutex);
- }
-
s3c2440_clk_cam.parent = clock_h;
s3c2440_clk_ac97.parent = clock_p;
s3c2440_clk_cam_upll.parent = clock_upll;
diff --git a/arch/arm/mach-s3c2442/clock.c b/arch/arm/mach-s3c2442/clock.c
index 5b9e830..2d030d4 100644
--- a/arch/arm/mach-s3c2442/clock.c
+++ b/arch/arm/mach-s3c2442/clock.c
@@ -115,14 +115,9 @@ static struct clk s3c2442_clk_cam_upll = {
static int s3c2442_clk_add(struct sys_device *sysdev)
{
- unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
- unsigned long clkdivn;
+ struct clk *clock_upll;
struct clk *clock_h;
struct clk *clock_p;
- struct clk *clock_upll;
-
- printk("S3C2442: Clock Support, DVS %s\n",
- (camdivn & S3C2440_CAMDIVN_DVSEN) ? "on" : "off");
clock_p = clk_get(NULL, "pclk");
clock_h = clk_get(NULL, "hclk");
@@ -133,21 +128,6 @@ static int s3c2442_clk_add(struct sys_device *sysdev)
return -EINVAL;
}
- /* check rate of UPLL, and if it is near 96MHz, then change
- * to using half the UPLL rate for the system */
-
- if (clk_get_rate(clock_upll) > (94 * MHZ)) {
- clk_usb_bus.rate = clk_get_rate(clock_upll) / 2;
-
- mutex_lock(&clocks_mutex);
-
- clkdivn = __raw_readl(S3C2410_CLKDIVN);
- clkdivn |= S3C2440_CLKDIVN_UCLK;
- __raw_writel(clkdivn, S3C2410_CLKDIVN);
-
- mutex_unlock(&clocks_mutex);
- }
-
s3c2442_clk_cam.parent = clock_h;
s3c2442_clk_cam_upll.parent = clock_upll;
diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
index 8e5ccaa..131d202 100644
--- a/arch/arm/plat-s3c24xx/Makefile
+++ b/arch/arm/plat-s3c24xx/Makefile
@@ -23,6 +23,7 @@ obj-y += clock.o
obj-$(CONFIG_CPU_S3C244X) += s3c244x.o
obj-$(CONFIG_CPU_S3C244X) += s3c244x-irq.o
+obj-$(CONFIG_CPU_S3C244X) += s3c244x-clock.o
obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o
obj-$(CONFIG_PM) += pm.o
obj-$(CONFIG_PM) += sleep.o
diff --git a/arch/arm/plat-s3c24xx/s3c244x-clock.c
b/arch/arm/plat-s3c24xx/s3c244x-clock.c
new file mode 100644
index 0000000..0bf5e7f
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/s3c244x-clock.c
@@ -0,0 +1,100 @@
+/* linux/arch/arm/plat-s3c24xx/s3c24xx-clock.c
+ *
+ * Copyright (c) 2004-2005,2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <[EMAIL PROTECTED]>
+ *
+ * S3C2440/S3C2442 Common clock support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/device.h>
+#include <linux/sysdev.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/mutex.h>
+#include <linux/clk.h>
+
+#include <asm/hardware.h>
+#include <asm/atomic.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+
+#include <asm/arch/regs-clock.h>
+
+#include <asm/plat-s3c24xx/clock.h>
+#include <asm/plat-s3c24xx/cpu.h>
+
+static int s3c244x_clk_add(struct sys_device *sysdev)
+{
+ unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
+ unsigned long clkdivn;
+ struct clk *clock_upll;
+
+ printk("S3C244X: Clock Support, DVS %s\n",
+ (camdivn & S3C2440_CAMDIVN_DVSEN) ? "on" : "off");
+
+ clock_upll = clk_get(NULL, "upll");
+ if (IS_ERR(clock_upll)) {
+ printk(KERN_ERR "S3C244X: Failed to get upll clock\n");
+ return -ENOENT;
+ }
+
+ /* check rate of UPLL, and if it is near 96MHz, then change
+ * to using half the UPLL rate for the system */
+
+ if (clk_get_rate(clock_upll) > (94 * MHZ)) {
+ clk_usb_bus.rate = clk_get_rate(clock_upll) / 2;
+
+ mutex_lock(&clocks_mutex);
+
+ clkdivn = __raw_readl(S3C2410_CLKDIVN);
+ clkdivn |= S3C2440_CLKDIVN_UCLK;
+ __raw_writel(clkdivn, S3C2410_CLKDIVN);
+
+ mutex_unlock(&clocks_mutex);
+ }
+
+ return 0;
+}
+
+static struct sysdev_driver s3c2440_clk_driver = {
+ .add = s3c244x_clk_add,
+};
+
+static int s3c2440_clk_init(void)
+{
+ return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_clk_driver);
+}
+
+arch_initcall(s3c2440_clk_init);
+
+static struct sysdev_driver s3c2442_clk_driver = {
+ .add = s3c244x_clk_add,
+};
+
+static int s3c2442_clk_init(void)
+{
+ return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_clk_driver);
+}
+
+arch_initcall(s3c2442_clk_init);
-
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