1 files changed, 0 insertions, 243 deletions
diff --git a/arch/avr32/mach-at32ap/pm.c b/arch/avr32/mach-at32ap/pm.c
deleted file mode 100644
index db19084..0000000
--- a/arch/avr32/mach-at32ap/pm.c
+++ /dev/null
@@ -1,243 +0,0 @@
-/*
- * AVR32 AP Power Management
- *
- * Copyright (C) 2008 Atmel Corporation
- *
- * 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/io.h>
-#include <linux/suspend.h>
-#include <linux/vmalloc.h>
-
-#include <asm/cacheflush.h>
-#include <asm/sysreg.h>
-
-#include <mach/chip.h>
-#include <mach/pm.h>
-#include <mach/sram.h>
-
-#include "sdramc.h"
-
-#define SRAM_PAGE_FLAGS	(SYSREG_BIT(TLBELO_D) | SYSREG_BF(SZ, 1)	\
-				| SYSREG_BF(AP, 3) | SYSREG_BIT(G))
-
-
-static unsigned long	pm_sram_start;
-static size_t		pm_sram_size;
-static struct vm_struct	*pm_sram_area;
-
-static void (*avr32_pm_enter_standby)(unsigned long sdramc_base);
-static void (*avr32_pm_enter_str)(unsigned long sdramc_base);
-
-/*
- * Must be called with interrupts disabled. Exceptions will be masked
- * on return (i.e. all exceptions will be "unrecoverable".)
- */
-static void *avr32_pm_map_sram(void)
-{
-	unsigned long	vaddr;
-	unsigned long	page_addr;
-	u32		tlbehi;
-	u32		mmucr;
-
-	vaddr = (unsigned long)pm_sram_area->addr;
-	page_addr = pm_sram_start & PAGE_MASK;
-
-	/*
-	 * Mask exceptions and grab the first TLB entry. We won't be
-	 * needing it while sleeping.
-	 */
-	asm volatile("ssrf	%0" : : "i"(SYSREG_EM_OFFSET) : "memory");
-
-	mmucr = sysreg_read(MMUCR);
-	tlbehi = sysreg_read(TLBEHI);
-	sysreg_write(MMUCR, SYSREG_BFINS(DRP, 0, mmucr));
-
-	tlbehi = SYSREG_BF(ASID, SYSREG_BFEXT(ASID, tlbehi));
-	tlbehi |= vaddr & PAGE_MASK;
-	tlbehi |= SYSREG_BIT(TLBEHI_V);
-
-	sysreg_write(TLBELO, page_addr | SRAM_PAGE_FLAGS);
-	sysreg_write(TLBEHI, tlbehi);
-	__builtin_tlbw();
-
-	return (void *)(vaddr + pm_sram_start - page_addr);
-}
-
-/*
- * Must be called with interrupts disabled. Exceptions will be
- * unmasked on return.
- */
-static void avr32_pm_unmap_sram(void)
-{
-	u32	mmucr;
-	u32	tlbehi;
-	u32	tlbarlo;
-
-	/* Going to update TLB entry at index 0 */
-	mmucr = sysreg_read(MMUCR);
-	tlbehi = sysreg_read(TLBEHI);
-	sysreg_write(MMUCR, SYSREG_BFINS(DRP, 0, mmucr));
-
-	/* Clear the "valid" bit */
-	tlbehi = SYSREG_BF(ASID, SYSREG_BFEXT(ASID, tlbehi));
-	sysreg_write(TLBEHI, tlbehi);
-
-	/* Mark it as "not accessed" */
-	tlbarlo = sysreg_read(TLBARLO);
-	sysreg_write(TLBARLO, tlbarlo | 0x80000000U);
-
-	/* Update the TLB */
-	__builtin_tlbw();
-
-	/* Unmask exceptions */
-	asm volatile("csrf	%0" : : "i"(SYSREG_EM_OFFSET) : "memory");
-}
-
-static int avr32_pm_valid_state(suspend_state_t state)
-{
-	switch (state) {
-	case PM_SUSPEND_ON:
-	case PM_SUSPEND_STANDBY:
-	case PM_SUSPEND_MEM:
-		return 1;
-
-	default:
-		return 0;
-	}
-}
-
-static int avr32_pm_enter(suspend_state_t state)
-{
-	u32		lpr_saved;
-	u32		evba_saved;
-	void		*sram;
-
-	switch (state) {
-	case PM_SUSPEND_STANDBY:
-		sram = avr32_pm_map_sram();
-
-		/* Switch to in-sram exception handlers */
-		evba_saved = sysreg_read(EVBA);
-		sysreg_write(EVBA, (unsigned long)sram);
-
-		/*
-		 * Save the LPR register so that we can re-enable
-		 * SDRAM Low Power mode on resume.
-		 */
-		lpr_saved = sdramc_readl(LPR);
-		pr_debug("%s: Entering standby...\n", __func__);
-		avr32_pm_enter_standby(SDRAMC_BASE);
-		sdramc_writel(LPR, lpr_saved);
-
-		/* Switch back to regular exception handlers */
-		sysreg_write(EVBA, evba_saved);
-
-		avr32_pm_unmap_sram();
-		break;
-
-	case PM_SUSPEND_MEM:
-		sram = avr32_pm_map_sram();
-
-		/* Switch to in-sram exception handlers */
-		evba_saved = sysreg_read(EVBA);
-		sysreg_write(EVBA, (unsigned long)sram);
-
-		/*
-		 * Save the LPR register so that we can re-enable
-		 * SDRAM Low Power mode on resume.
-		 */
-		lpr_saved = sdramc_readl(LPR);
-		pr_debug("%s: Entering suspend-to-ram...\n", __func__);
-		avr32_pm_enter_str(SDRAMC_BASE);
-		sdramc_writel(LPR, lpr_saved);
-
-		/* Switch back to regular exception handlers */
-		sysreg_write(EVBA, evba_saved);
-
-		avr32_pm_unmap_sram();
-		break;
-
-	case PM_SUSPEND_ON:
-		pr_debug("%s: Entering idle...\n", __func__);
-		cpu_enter_idle();
-		break;
-
-	default:
-		pr_debug("%s: Invalid suspend state %d\n", __func__, state);
-		goto out;
-	}
-
-	pr_debug("%s: wakeup\n", __func__);
-
-out:
-	return 0;
-}
-
-static const struct platform_suspend_ops avr32_pm_ops = {
-	.valid	= avr32_pm_valid_state,
-	.enter	= avr32_pm_enter,
-};
-
-static unsigned long __init avr32_pm_offset(void *symbol)
-{
-	extern u8 pm_exception[];
-
-	return (unsigned long)symbol - (unsigned long)pm_exception;
-}
-
-static int __init avr32_pm_init(void)
-{
-	extern u8 pm_exception[];
-	extern u8 pm_irq0[];
-	extern u8 pm_standby[];
-	extern u8 pm_suspend_to_ram[];
-	extern u8 pm_sram_end[];
-	void *dst;
-
-	/*
-	 * To keep things simple, we depend on not needing more than a
-	 * single page.
-	 */
-	pm_sram_size = avr32_pm_offset(pm_sram_end);
-	if (pm_sram_size > PAGE_SIZE)
-		goto err;
-
-	pm_sram_start = sram_alloc(pm_sram_size);
-	if (!pm_sram_start)
-		goto err_alloc_sram;
-
-	/* Grab a virtual area we can use later on. */
-	pm_sram_area = get_vm_area(pm_sram_size, VM_IOREMAP);
-	if (!pm_sram_area)
-		goto err_vm_area;
-	pm_sram_area->phys_addr = pm_sram_start;
-
-	local_irq_disable();
-	dst = avr32_pm_map_sram();
-	memcpy(dst, pm_exception, pm_sram_size);
-	flush_dcache_region(dst, pm_sram_size);
-	invalidate_icache_region(dst, pm_sram_size);
-	avr32_pm_unmap_sram();
-	local_irq_enable();
-
-	avr32_pm_enter_standby = dst + avr32_pm_offset(pm_standby);
-	avr32_pm_enter_str = dst + avr32_pm_offset(pm_suspend_to_ram);
-	intc_set_suspend_handler(avr32_pm_offset(pm_irq0));
-
-	suspend_set_ops(&avr32_pm_ops);
-
-	printk("AVR32 AP Power Management enabled\n");
-
-	return 0;
-
-err_vm_area:
-	sram_free(pm_sram_start, pm_sram_size);
-err_alloc_sram:
-err:
-	pr_err("AVR32 Power Management initialization failed\n");
-	return -ENOMEM;
-}
-arch_initcall(avr32_pm_init);