[ARM] 4157/2: S3C24XX: move arch/arch/mach-s3c2410 into cpu components

The following patch and script moves the arch/arm/mach-s3c2410
directory into arch/arm/plat-s3c24xx for the generic core code
and inti arch/arm/mach-s3c{cpu} for the cpu/machine support files

Include directory include/asm-arm/plat-s3c24xx is added for the
core include files.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

4 files changed, 248 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2442/Kconfig b/arch/arm/mach-s3c2442/Kconfig
new file mode 100644
index 000000000000..bf8d87abfab3
--- /dev/null
+++ b/arch/arm/mach-s3c2442/Kconfig
@@ -0,0 +1,27 @@
+# arch/arm/mach-s3c2442/Kconfig
+#
+# Copyright 2007 Simtec Electronics
+#
+# Licensed under GPLv2
+
+config CPU_S3C2442
+	bool
+	depends on ARCH_S3C2420
+	select S3C2410_CLOCK
+	select S3C2410_GPIO
+	select S3C2410_PM if PM
+	select CPU_S3C244X
+	help
+	  Support for S3C2442 Samsung Mobile CPU based systems.
+
+
+menu "S3C2442 Machines"
+
+config SMDK2440_CPU2442
+	bool "SMDM2440 with S3C2442 CPU module"
+	depends on ARCH_S3C2440
+	select CPU_S3C2442
+
+
+endmenu
+
diff --git a/arch/arm/mach-s3c2442/Makefile b/arch/arm/mach-s3c2442/Makefile
new file mode 100644
index 000000000000..2a909c6c5798
--- /dev/null
+++ b/arch/arm/mach-s3c2442/Makefile
@@ -0,0 +1,16 @@
+# arch/arm/mach-s3c2442/Makefile
+#
+# Copyright 2007 Simtec Electronics
+#
+# Licensed under GPLv2
+
+obj-y				:=
+obj-m				:=
+obj-n				:=
+obj-				:=
+
+obj-$(CONFIG_CPU_S3C2442)	+= s3c2442.o
+obj-$(CONFIG_CPU_S3C2442)	+= clock.o
+
+# Machine support
+
diff --git a/arch/arm/mach-s3c2442/clock.c b/arch/arm/mach-s3c2442/clock.c
new file mode 100644
index 000000000000..5b9e830ac4d3
--- /dev/null
+++ b/arch/arm/mach-s3c2442/clock.c
@@ -0,0 +1,171 @@
+/* linux/arch/arm/mach-s3c2442/clock.c
+ *
+ * Copyright (c) 2004-2005 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2442 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>
+
+/* S3C2442 extended clock support */
+
+static unsigned long s3c2442_camif_upll_round(struct clk *clk,
+					      unsigned long rate)
+{
+	unsigned long parent_rate = clk_get_rate(clk->parent);
+	int div;
+
+	if (rate > parent_rate)
+		return parent_rate;
+
+	div = parent_rate / rate;
+
+	if (div == 3)
+		return parent_rate / 3;
+
+	/* note, we remove the +/- 1 calculations for the divisor */
+
+	div /= 2;
+
+	if (div < 1)
+		div = 1;
+	else if (div > 16)
+		div = 16;
+
+	return parent_rate / (div * 2);
+}
+
+static int s3c2442_camif_upll_setrate(struct clk *clk, unsigned long rate)
+{
+	unsigned long parent_rate = clk_get_rate(clk->parent);
+	unsigned long camdivn =  __raw_readl(S3C2440_CAMDIVN);
+
+	rate = s3c2442_camif_upll_round(clk, rate);
+
+	camdivn &= ~S3C2442_CAMDIVN_CAMCLK_DIV3;
+
+	if (rate == parent_rate) {
+		camdivn &= ~S3C2440_CAMDIVN_CAMCLK_SEL;
+	} else if ((parent_rate / rate) == 3) {
+		camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
+		camdivn |= S3C2442_CAMDIVN_CAMCLK_DIV3;
+	} else {
+		camdivn &= ~S3C2440_CAMDIVN_CAMCLK_MASK;
+		camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
+		camdivn |= (((parent_rate / rate) / 2) - 1);
+	}
+
+	__raw_writel(camdivn, S3C2440_CAMDIVN);
+
+	return 0;
+}
+
+/* Extra S3C2442 clocks */
+
+static struct clk s3c2442_clk_cam = {
+	.name		= "camif",
+	.id		= -1,
+	.enable		= s3c2410_clkcon_enable,
+	.ctrlbit	= S3C2440_CLKCON_CAMERA,
+};
+
+static struct clk s3c2442_clk_cam_upll = {
+	.name		= "camif-upll",
+	.id		= -1,
+	.set_rate	= s3c2442_camif_upll_setrate,
+	.round_rate	= s3c2442_camif_upll_round,
+};
+
+static int s3c2442_clk_add(struct sys_device *sysdev)
+{
+	unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
+	unsigned long clkdivn;
+	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");
+	clock_upll = clk_get(NULL, "upll");
+
+	if (IS_ERR(clock_p) || IS_ERR(clock_h) || IS_ERR(clock_upll)) {
+		printk(KERN_ERR "S3C2442: Failed to get parent clocks\n");
+		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;
+
+	s3c24xx_register_clock(&s3c2442_clk_cam);
+	s3c24xx_register_clock(&s3c2442_clk_cam_upll);
+
+	clk_disable(&s3c2442_clk_cam);
+
+	return 0;
+}
+
+static struct sysdev_driver s3c2442_clk_driver = {
+	.add	= s3c2442_clk_add,
+};
+
+static __init int s3c2442_clk_init(void)
+{
+	return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_clk_driver);
+}
+
+arch_initcall(s3c2442_clk_init);
diff --git a/arch/arm/mach-s3c2442/s3c2442.c b/arch/arm/mach-s3c2442/s3c2442.c
new file mode 100644
index 000000000000..fbf8264249da
--- /dev/null
+++ b/arch/arm/mach-s3c2442/s3c2442.c
@@ -0,0 +1,34 @@
+/* linux/arch/arm/mach-s3c2442/s3c2442.c
+ *
+ * Copyright (c) 2006 Simtec Electronics
+ *   Ben Dooks <ben@simtec.co.uk>
+ *
+ * Samsung S3C2442 Mobile CPU support
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/sysdev.h>
+
+#include <asm/plat-s3c24xx/s3c2442.h>
+#include <asm/plat-s3c24xx/cpu.h>
+
+static struct sys_device s3c2442_sysdev = {
+	.cls		= &s3c2442_sysclass,
+};
+
+int __init s3c2442_init(void)
+{
+	printk("S3C2442: Initialising architecture\n");
+
+	return sysdev_register(&s3c2442_sysdev);
+}