ARM: SAMSUNG: Move pm.c to plat-samsung

Move pm.c to plat-samsung, it should be usable by all Samsung systems

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 0 insertions, 378 deletions

diff --git a/arch/arm/plat-s3c/pm.c b/arch/arm/plat-s3c/pm.c
deleted file mode 100644
index 27cfca597699..000000000000
--- a/arch/arm/plat-s3c/pm.c
+++ /dev/null
@@ -1,378 +0,0 @@
-/* linux/arch/arm/plat-s3c/pm.c
- *
- * Copyright 2008 Openmoko, Inc.
- * Copyright 2004-2008 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *	http://armlinux.simtec.co.uk/
- *
- * S3C common power management (suspend to ram) 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/init.h>
-#include <linux/suspend.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/serial_core.h>
-#include <linux/io.h>
-
-#include <asm/cacheflush.h>
-#include <mach/hardware.h>
-#include <mach/map.h>
-
-#include <plat/regs-serial.h>
-#include <mach/regs-clock.h>
-#include <mach/regs-irq.h>
-#include <asm/irq.h>
-
-#include <plat/pm.h>
-#include <mach/pm-core.h>
-
-/* for external use */
-
-unsigned long s3c_pm_flags;
-
-/* Debug code:
- *
- * This code supports debug output to the low level UARTs for use on
- * resume before the console layer is available.
-*/
-
-#ifdef CONFIG_SAMSUNG_PM_DEBUG
-extern void printascii(const char *);
-
-void s3c_pm_dbg(const char *fmt, ...)
-{
-	va_list va;
-	char buff[256];
-
-	va_start(va, fmt);
-	vsprintf(buff, fmt, va);
-	va_end(va);
-
-	printascii(buff);
-}
-
-static inline void s3c_pm_debug_init(void)
-{
-	/* restart uart clocks so we can use them to output */
-	s3c_pm_debug_init_uart();
-}
-
-#else
-#define s3c_pm_debug_init() do { } while(0)
-
-#endif /* CONFIG_SAMSUNG_PM_DEBUG */
-
-/* Save the UART configurations if we are configured for debug. */
-
-unsigned char pm_uart_udivslot;
-
-#ifdef CONFIG_SAMSUNG_PM_DEBUG
-
-struct pm_uart_save uart_save[CONFIG_SERIAL_SAMSUNG_UARTS];
-
-static void s3c_pm_save_uart(unsigned int uart, struct pm_uart_save *save)
-{
-	void __iomem *regs = S3C_VA_UARTx(uart);
-
-	save->ulcon = __raw_readl(regs + S3C2410_ULCON);
-	save->ucon = __raw_readl(regs + S3C2410_UCON);
-	save->ufcon = __raw_readl(regs + S3C2410_UFCON);
-	save->umcon = __raw_readl(regs + S3C2410_UMCON);
-	save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV);
-
-	if (pm_uart_udivslot)
-		save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
-
-	S3C_PMDBG("UART[%d]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
-		  uart, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
-}
-
-static void s3c_pm_save_uarts(void)
-{
-	struct pm_uart_save *save = uart_save;
-	unsigned int uart;
-
-	for (uart = 0; uart < CONFIG_SERIAL_SAMSUNG_UARTS; uart++, save++)
-		s3c_pm_save_uart(uart, save);
-}
-
-static void s3c_pm_restore_uart(unsigned int uart, struct pm_uart_save *save)
-{
-	void __iomem *regs = S3C_VA_UARTx(uart);
-
-	s3c_pm_arch_update_uart(regs, save);
-
-	__raw_writel(save->ulcon, regs + S3C2410_ULCON);
-	__raw_writel(save->ucon,  regs + S3C2410_UCON);
-	__raw_writel(save->ufcon, regs + S3C2410_UFCON);
-	__raw_writel(save->umcon, regs + S3C2410_UMCON);
-	__raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV);
-
-	if (pm_uart_udivslot)
-		__raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
-}
-
-static void s3c_pm_restore_uarts(void)
-{
-	struct pm_uart_save *save = uart_save;
-	unsigned int uart;
-
-	for (uart = 0; uart < CONFIG_SERIAL_SAMSUNG_UARTS; uart++, save++)
-		s3c_pm_restore_uart(uart, save);
-}
-#else
-static void s3c_pm_save_uarts(void) { }
-static void s3c_pm_restore_uarts(void) { }
-#endif
-
-/* The IRQ ext-int code goes here, it is too small to currently bother
- * with its own file. */
-
-unsigned long s3c_irqwake_intmask	= 0xffffffffL;
-unsigned long s3c_irqwake_eintmask	= 0xffffffffL;
-
-int s3c_irqext_wake(unsigned int irqno, unsigned int state)
-{
-	unsigned long bit = 1L << IRQ_EINT_BIT(irqno);
-
-	if (!(s3c_irqwake_eintallow & bit))
-		return -ENOENT;
-
-	printk(KERN_INFO "wake %s for irq %d\n",
-	       state ? "enabled" : "disabled", irqno);
-
-	if (!state)
-		s3c_irqwake_eintmask |= bit;
-	else
-		s3c_irqwake_eintmask &= ~bit;
-
-	return 0;
-}
-
-/* helper functions to save and restore register state */
-
-/**
- * s3c_pm_do_save() - save a set of registers for restoration on resume.
- * @ptr: Pointer to an array of registers.
- * @count: Size of the ptr array.
- *
- * Run through the list of registers given, saving their contents in the
- * array for later restoration when we wakeup.
- */
-void s3c_pm_do_save(struct sleep_save *ptr, int count)
-{
-	for (; count > 0; count--, ptr++) {
-		ptr->val = __raw_readl(ptr->reg);
-		S3C_PMDBG("saved %p value %08lx\n", ptr->reg, ptr->val);
-	}
-}
-
-/**
- * s3c_pm_do_restore() - restore register values from the save list.
- * @ptr: Pointer to an array of registers.
- * @count: Size of the ptr array.
- *
- * Restore the register values saved from s3c_pm_do_save().
- *
- * Note, we do not use S3C_PMDBG() in here, as the system may not have
- * restore the UARTs state yet
-*/
-
-void s3c_pm_do_restore(struct sleep_save *ptr, int count)
-{
-	for (; count > 0; count--, ptr++) {
-		printk(KERN_DEBUG "restore %p (restore %08lx, was %08x)\n",
-		       ptr->reg, ptr->val, __raw_readl(ptr->reg));
-
-		__raw_writel(ptr->val, ptr->reg);
-	}
-}
-
-/**
- * s3c_pm_do_restore_core() - early restore register values from save list.
- *
- * This is similar to s3c_pm_do_restore() except we try and minimise the
- * side effects of the function in case registers that hardware might need
- * to work has been restored.
- *
- * WARNING: Do not put any debug in here that may effect memory or use
- * peripherals, as things may be changing!
-*/
-
-void s3c_pm_do_restore_core(struct sleep_save *ptr, int count)
-{
-	for (; count > 0; count--, ptr++)
-		__raw_writel(ptr->val, ptr->reg);
-}
-
-/* s3c2410_pm_show_resume_irqs
- *
- * print any IRQs asserted at resume time (ie, we woke from)
-*/
-static void s3c_pm_show_resume_irqs(int start, unsigned long which,
-				    unsigned long mask)
-{
-	int i;
-
-	which &= ~mask;
-
-	for (i = 0; i <= 31; i++) {
-		if (which & (1L<<i)) {
-			S3C_PMDBG("IRQ %d asserted at resume\n", start+i);
-		}
-	}
-}
-
-
-void (*pm_cpu_prep)(void);
-void (*pm_cpu_sleep)(void);
-
-#define any_allowed(mask, allow) (((mask) & (allow)) != (allow))
-
-/* s3c_pm_enter
- *
- * central control for sleep/resume process
-*/
-
-static int s3c_pm_enter(suspend_state_t state)
-{
-	static unsigned long regs_save[16];
-
-	/* ensure the debug is initialised (if enabled) */
-
-	s3c_pm_debug_init();
-
-	S3C_PMDBG("%s(%d)\n", __func__, state);
-
-	if (pm_cpu_prep == NULL || pm_cpu_sleep == NULL) {
-		printk(KERN_ERR "%s: error: no cpu sleep function\n", __func__);
-		return -EINVAL;
-	}
-
-	/* check if we have anything to wake-up with... bad things seem
-	 * to happen if you suspend with no wakeup (system will often
-	 * require a full power-cycle)
-	*/
-
-	if (!any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) &&
-	    !any_allowed(s3c_irqwake_eintmask, s3c_irqwake_eintallow)) {
-		printk(KERN_ERR "%s: No wake-up sources!\n", __func__);
-		printk(KERN_ERR "%s: Aborting sleep\n", __func__);
-		return -EINVAL;
-	}
-
-	/* store the physical address of the register recovery block */
-
-	s3c_sleep_save_phys = virt_to_phys(regs_save);
-
-	S3C_PMDBG("s3c_sleep_save_phys=0x%08lx\n", s3c_sleep_save_phys);
-
-	/* save all necessary core registers not covered by the drivers */
-
-	s3c_pm_save_gpios();
-	s3c_pm_save_uarts();
-	s3c_pm_save_core();
-
-	/* set the irq configuration for wake */
-
-	s3c_pm_configure_extint();
-
-	S3C_PMDBG("sleep: irq wakeup masks: %08lx,%08lx\n",
-	    s3c_irqwake_intmask, s3c_irqwake_eintmask);
-
-	s3c_pm_arch_prepare_irqs();
-
-	/* call cpu specific preparation */
-
-	pm_cpu_prep();
-
-	/* flush cache back to ram */
-
-	flush_cache_all();
-
-	s3c_pm_check_store();
-
-	/* send the cpu to sleep... */
-
-	s3c_pm_arch_stop_clocks();
-
-	/* s3c_cpu_save will also act as our return point from when
-	 * we resume as it saves its own register state and restores it
-	 * during the resume.  */
-
-	s3c_cpu_save(regs_save);
-
-	/* restore the cpu state using the kernel's cpu init code. */
-
-	cpu_init();
-
-	/* restore the system state */
-
-	s3c_pm_restore_core();
-	s3c_pm_restore_uarts();
-	s3c_pm_restore_gpios();
-
-	s3c_pm_debug_init();
-
-	/* check what irq (if any) restored the system */
-
-	s3c_pm_arch_show_resume_irqs();
-
-	S3C_PMDBG("%s: post sleep, preparing to return\n", __func__);
-
-	/* LEDs should now be 1110 */
-	s3c_pm_debug_smdkled(1 << 1, 0);
-
-	s3c_pm_check_restore();
-
-	/* ok, let's return from sleep */
-
-	S3C_PMDBG("S3C PM Resume (post-restore)\n");
-	return 0;
-}
-
-/* callback from assembly code */
-void s3c_pm_cb_flushcache(void)
-{
-	flush_cache_all();
-}
-
-static int s3c_pm_prepare(void)
-{
-	/* prepare check area if configured */
-
-	s3c_pm_check_prepare();
-	return 0;
-}
-
-static void s3c_pm_finish(void)
-{
-	s3c_pm_check_cleanup();
-}
-
-static struct platform_suspend_ops s3c_pm_ops = {
-	.enter		= s3c_pm_enter,
-	.prepare	= s3c_pm_prepare,
-	.finish		= s3c_pm_finish,
-	.valid		= suspend_valid_only_mem,
-};
-
-/* s3c_pm_init
- *
- * Attach the power management functions. This should be called
- * from the board specific initialisation if the board supports
- * it.
-*/
-
-int __init s3c_pm_init(void)
-{
-	printk("S3C Power Management, Copyright 2004 Simtec Electronics\n");
-
-	suspend_set_ops(&s3c_pm_ops);
-	return 0;
-}