[AVR32] Remove unused file

Remove arch/avr32/mach-at32ap/sm.c, which is not referenced by
any Makefile.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

diff --git a/arch/avr32/mach-at32ap/sm.c b/arch/avr32/mach-at32ap/sm.c
deleted file mode 100644 (file)
index 03306eb..0000000
--- a/arch/avr32/mach-at32ap/sm.c
+++ /dev/null
@@ -1,289 +0,0 @@
-/*
- * System Manager driver for AT32AP CPUs
- *
- * Copyright (C) 2006 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/errno.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/random.h>
-#include <linux/spinlock.h>
-
-#include <asm/intc.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-#include <asm/arch/sm.h>
-
-#include "sm.h"
-
-#define SM_EIM_IRQ_RESOURCE    1
-#define SM_PM_IRQ_RESOURCE     2
-#define SM_RTC_IRQ_RESOURCE    3
-
-#define to_eim(irqc) container_of(irqc, struct at32_sm, irqc)
-
-struct at32_sm system_manager;
-
-int __init at32_sm_init(void)
-{
-       struct resource *regs;
-       struct at32_sm *sm = &system_manager;
-       int ret = -ENXIO;
-
-       regs = platform_get_resource(&at32_sm_device, IORESOURCE_MEM, 0);
-       if (!regs)
-               goto fail;
-
-       spin_lock_init(&sm->lock);
-       sm->pdev = &at32_sm_device;
-
-       ret = -ENOMEM;
-       sm->regs = ioremap(regs->start, regs->end - regs->start + 1);
-       if (!sm->regs)
-               goto fail;
-
-       return 0;
-
-fail:
-       printk(KERN_ERR "Failed to initialize System Manager: %d\n", ret);
-       return ret;
-}
-
-/*
- * External Interrupt Module (EIM).
- *
- * EIM gets level- or edge-triggered interrupts of either polarity
- * from the outside and converts it to active-high level-triggered
- * interrupts that the internal interrupt controller can handle. EIM
- * also provides masking/unmasking of interrupts, as well as
- * acknowledging of edge-triggered interrupts.
- */
-
-static irqreturn_t spurious_eim_interrupt(int irq, void *dev_id,
-                                         struct pt_regs *regs)
-{
-       printk(KERN_WARNING "Spurious EIM interrupt %d\n", irq);
-       disable_irq(irq);
-       return IRQ_NONE;
-}
-
-static struct irqaction eim_spurious_action = {
-       .handler = spurious_eim_interrupt,
-};
-
-static irqreturn_t eim_handle_irq(int irq, void *dev_id, struct pt_regs *regs)
-{
-       struct irq_controller * irqc = dev_id;
-       struct at32_sm *sm = to_eim(irqc);
-       unsigned long pending;
-
-       /*
-        * No need to disable interrupts globally.  The interrupt
-        * level relevant to this group must be masked all the time,
-        * so we know that this particular EIM instance will not be
-        * re-entered.
-        */
-       spin_lock(&sm->lock);
-
-       pending = intc_get_pending(sm->irqc.irq_group);
-       if (unlikely(!pending)) {
-               printk(KERN_ERR "EIM (group %u): No interrupts pending!\n",
-                      sm->irqc.irq_group);
-               goto unlock;
-       }
-
-       do {
-               struct irqaction *action;
-               unsigned int i;
-
-               i = fls(pending) - 1;
-               pending &= ~(1 << i);
-               action = sm->action[i];
-
-               /* Acknowledge the interrupt */
-               sm_writel(sm, EIM_ICR, 1 << i);
-
-               spin_unlock(&sm->lock);
-
-               if (action->flags & SA_INTERRUPT)
-                       local_irq_disable();
-               action->handler(sm->irqc.first_irq + i, action->dev_id, regs);
-               local_irq_enable();
-               spin_lock(&sm->lock);
-               if (action->flags & SA_SAMPLE_RANDOM)
-                       add_interrupt_randomness(sm->irqc.first_irq + i);
-       } while (pending);
-
-unlock:
-       spin_unlock(&sm->lock);
-       return IRQ_HANDLED;
-}
-
-static void eim_mask(struct irq_controller *irqc, unsigned int irq)
-{
-       struct at32_sm *sm = to_eim(irqc);
-       unsigned int i;
-
-       i = irq - sm->irqc.first_irq;
-       sm_writel(sm, EIM_IDR, 1 << i);
-}
-
-static void eim_unmask(struct irq_controller *irqc, unsigned int irq)
-{
-       struct at32_sm *sm = to_eim(irqc);
-       unsigned int i;
-
-       i = irq - sm->irqc.first_irq;
-       sm_writel(sm, EIM_IER, 1 << i);
-}
-
-static int eim_setup(struct irq_controller *irqc, unsigned int irq,
-               struct irqaction *action)
-{
-       struct at32_sm *sm = to_eim(irqc);
-       sm->action[irq - sm->irqc.first_irq] = action;
-       /* Acknowledge earlier interrupts */
-       sm_writel(sm, EIM_ICR, (1<<(irq - sm->irqc.first_irq)));
-       eim_unmask(irqc, irq);
-       return 0;
-}
-
-static void eim_free(struct irq_controller *irqc, unsigned int irq,
-               void *dev)
-{
-       struct at32_sm *sm = to_eim(irqc);
-       eim_mask(irqc, irq);
-       sm->action[irq - sm->irqc.first_irq] = &eim_spurious_action;
-}
-
-static int eim_set_type(struct irq_controller *irqc, unsigned int irq,
-                       unsigned int type)
-{
-       struct at32_sm *sm = to_eim(irqc);
-       unsigned long flags;
-       u32 value, pattern;
-
-       spin_lock_irqsave(&sm->lock, flags);
-
-       pattern = 1 << (irq - sm->irqc.first_irq);
-
-       value = sm_readl(sm, EIM_MODE);
-       if (type & IRQ_TYPE_LEVEL)
-               value |= pattern;
-       else
-               value &= ~pattern;
-       sm_writel(sm, EIM_MODE, value);
-       value = sm_readl(sm, EIM_EDGE);
-       if (type & IRQ_EDGE_RISING)
-               value |= pattern;
-       else
-               value &= ~pattern;
-       sm_writel(sm, EIM_EDGE, value);
-       value = sm_readl(sm, EIM_LEVEL);
-       if (type & IRQ_LEVEL_HIGH)
-               value |= pattern;
-       else
-               value &= ~pattern;
-       sm_writel(sm, EIM_LEVEL, value);
-
-       spin_unlock_irqrestore(&sm->lock, flags);
-
-       return 0;
-}
-
-static unsigned int eim_get_type(struct irq_controller *irqc,
-                                unsigned int irq)
-{
-       struct at32_sm *sm = to_eim(irqc);
-       unsigned long flags;
-       unsigned int type = 0;
-       u32 mode, edge, level, pattern;
-
-       pattern = 1 << (irq - sm->irqc.first_irq);
-
-       spin_lock_irqsave(&sm->lock, flags);
-       mode = sm_readl(sm, EIM_MODE);
-       edge = sm_readl(sm, EIM_EDGE);
-       level = sm_readl(sm, EIM_LEVEL);
-       spin_unlock_irqrestore(&sm->lock, flags);
-
-       if (mode & pattern)
-               type |= IRQ_TYPE_LEVEL;
-       if (edge & pattern)
-               type |= IRQ_EDGE_RISING;
-       if (level & pattern)
-               type |= IRQ_LEVEL_HIGH;
-
-       return type;
-}
-
-static struct irq_controller_class eim_irq_class = {
-       .typename       = "EIM",
-       .handle         = eim_handle_irq,
-       .setup          = eim_setup,
-       .free           = eim_free,
-       .mask           = eim_mask,
-       .unmask         = eim_unmask,
-       .set_type       = eim_set_type,
-       .get_type       = eim_get_type,
-};
-
-static int __init eim_init(void)
-{
-       struct at32_sm *sm = &system_manager;
-       unsigned int i;
-       u32 pattern;
-       int ret;
-
-       /*
-        * The EIM is really the same module as SM, so register
-        * mapping, etc. has been taken care of already.
-        */
-
-       /*
-        * Find out how many interrupt lines that are actually
-        * implemented in hardware.
-        */
-       sm_writel(sm, EIM_IDR, ~0UL);
-       sm_writel(sm, EIM_MODE, ~0UL);
-       pattern = sm_readl(sm, EIM_MODE);
-       sm->irqc.nr_irqs = fls(pattern);
-
-       ret = -ENOMEM;
-       sm->action = kmalloc(sizeof(*sm->action) * sm->irqc.nr_irqs,
-                            GFP_KERNEL);
-       if (!sm->action)
-               goto out;
-
-       for (i = 0; i < sm->irqc.nr_irqs; i++)
-               sm->action[i] = &eim_spurious_action;
-
-       spin_lock_init(&sm->lock);
-       sm->irqc.irq_group = sm->pdev->resource[SM_EIM_IRQ_RESOURCE].start;
-       sm->irqc.class = &eim_irq_class;
-
-       ret = intc_register_controller(&sm->irqc);
-       if (ret < 0)
-               goto out_free_actions;
-
-       printk("EIM: External Interrupt Module at 0x%p, IRQ group %u\n",
-              sm->regs, sm->irqc.irq_group);
-       printk("EIM: Handling %u external IRQs, starting with IRQ%u\n",
-              sm->irqc.nr_irqs, sm->irqc.first_irq);
-
-       return 0;
-
-out_free_actions:
-       kfree(sm->action);
-out:
-       return ret;
-}
-arch_initcall(eim_init);