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Diffstat (limited to 'arch/arm/mach-s5p6440/cpu.c')
-rw-r--r--arch/arm/mach-s5p6440/cpu.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/arch/arm/mach-s5p6440/cpu.c b/arch/arm/mach-s5p6440/cpu.c
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+++ b/arch/arm/mach-s5p6440/cpu.c
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+/* linux/arch/arm/mach-s5p6440/cpu.c
+ *
+ * Copyright (c) 2009 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * 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/clk.h>
+#include <linux/io.h>
+#include <linux/sysdev.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/proc-fns.h>
+
+#include <mach/hardware.h>
+#include <mach/map.h>
+#include <asm/irq.h>
+
+#include <plat/regs-serial.h>
+#include <mach/regs-clock.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/clock.h>
+#include <plat/s5p6440.h>
+
+static void s5p6440_idle(void)
+{
+ unsigned long val;
+
+ if (!need_resched()) {
+ val = __raw_readl(S5P_PWR_CFG);
+ val &= ~(0x3<<5);
+ val |= (0x1<<5);
+ __raw_writel(val, S5P_PWR_CFG);
+
+ cpu_do_idle();
+ }
+ local_irq_enable();
+}
+
+/* s5p6440_map_io
+ *
+ * register the standard cpu IO areas
+*/
+
+void __init s5p6440_map_io(void)
+{
+ /* initialize any device information early */
+}
+
+void __init s5p6440_init_clocks(int xtal)
+{
+ printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
+
+ s3c24xx_register_baseclocks(xtal);
+ s5p_register_clocks(xtal);
+ s5p6440_register_clocks();
+ s5p6440_setup_clocks();
+}
+
+void __init s5p6440_init_irq(void)
+{
+ /* S5P6440 supports only 2 VIC */
+ u32 vic[2];
+
+ /*
+ * VIC0 is missing IRQ_VIC0[3, 4, 8, 10, (12-22)]
+ * VIC1 is missing IRQ VIC1[1, 3, 4, 10, 11, 12, 14, 15, 22]
+ */
+ vic[0] = 0xff800ae7;
+ vic[1] = 0xffbf23e5;
+
+ s5p_init_irq(vic, ARRAY_SIZE(vic));
+}
+
+static struct sysdev_class s5p6440_sysclass = {
+ .name = "s5p6440-core",
+};
+
+static struct sys_device s5p6440_sysdev = {
+ .cls = &s5p6440_sysclass,
+};
+
+static int __init s5p6440_core_init(void)
+{
+ return sysdev_class_register(&s5p6440_sysclass);
+}
+
+core_initcall(s5p6440_core_init);
+
+int __init s5p6440_init(void)
+{
+ printk(KERN_INFO "S5P6440: Initializing architecture\n");
+
+ /* set idle function */
+ pm_idle = s5p6440_idle;
+
+ return sysdev_register(&s5p6440_sysdev);
+}