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Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/platforms/embedded6xx/flipper-pic.c')
-rw-r--r--ANDROID_3.4.5/arch/powerpc/platforms/embedded6xx/flipper-pic.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/platforms/embedded6xx/flipper-pic.c b/ANDROID_3.4.5/arch/powerpc/platforms/embedded6xx/flipper-pic.c
deleted file mode 100644
index 53d6eee0..00000000
--- a/ANDROID_3.4.5/arch/powerpc/platforms/embedded6xx/flipper-pic.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * arch/powerpc/platforms/embedded6xx/flipper-pic.c
- *
- * Nintendo GameCube/Wii "Flipper" interrupt controller support.
- * Copyright (C) 2004-2009 The GameCube Linux Team
- * Copyright (C) 2007,2008,2009 Albert Herranz
- *
- * 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.
- *
- */
-#define DRV_MODULE_NAME "flipper-pic"
-#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/of.h>
-#include <asm/io.h>
-
-#include "flipper-pic.h"
-
-#define FLIPPER_NR_IRQS 32
-
-/*
- * Each interrupt has a corresponding bit in both
- * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
- *
- * Enabling/disabling an interrupt line involves setting/clearing
- * the corresponding bit in IMR.
- * Except for the RSW interrupt, all interrupts get deasserted automatically
- * when the source deasserts the interrupt.
- */
-#define FLIPPER_ICR 0x00
-#define FLIPPER_ICR_RSS (1<<16) /* reset switch state */
-
-#define FLIPPER_IMR 0x04
-
-#define FLIPPER_RESET 0x24
-
-
-/*
- * IRQ chip hooks.
- *
- */
-
-static void flipper_pic_mask_and_ack(struct irq_data *d)
-{
- int irq = irqd_to_hwirq(d);
- void __iomem *io_base = irq_data_get_irq_chip_data(d);
- u32 mask = 1 << irq;
-
- clrbits32(io_base + FLIPPER_IMR, mask);
- /* this is at least needed for RSW */
- out_be32(io_base + FLIPPER_ICR, mask);
-}
-
-static void flipper_pic_ack(struct irq_data *d)
-{
- int irq = irqd_to_hwirq(d);
- void __iomem *io_base = irq_data_get_irq_chip_data(d);
-
- /* this is at least needed for RSW */
- out_be32(io_base + FLIPPER_ICR, 1 << irq);
-}
-
-static void flipper_pic_mask(struct irq_data *d)
-{
- int irq = irqd_to_hwirq(d);
- void __iomem *io_base = irq_data_get_irq_chip_data(d);
-
- clrbits32(io_base + FLIPPER_IMR, 1 << irq);
-}
-
-static void flipper_pic_unmask(struct irq_data *d)
-{
- int irq = irqd_to_hwirq(d);
- void __iomem *io_base = irq_data_get_irq_chip_data(d);
-
- setbits32(io_base + FLIPPER_IMR, 1 << irq);
-}
-
-
-static struct irq_chip flipper_pic = {
- .name = "flipper-pic",
- .irq_ack = flipper_pic_ack,
- .irq_mask_ack = flipper_pic_mask_and_ack,
- .irq_mask = flipper_pic_mask,
- .irq_unmask = flipper_pic_unmask,
-};
-
-/*
- * IRQ host hooks.
- *
- */
-
-static struct irq_domain *flipper_irq_host;
-
-static int flipper_pic_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hwirq)
-{
- irq_set_chip_data(virq, h->host_data);
- irq_set_status_flags(virq, IRQ_LEVEL);
- irq_set_chip_and_handler(virq, &flipper_pic, handle_level_irq);
- return 0;
-}
-
-static int flipper_pic_match(struct irq_domain *h, struct device_node *np)
-{
- return 1;
-}
-
-
-static const struct irq_domain_ops flipper_irq_domain_ops = {
- .map = flipper_pic_map,
- .match = flipper_pic_match,
-};
-
-/*
- * Platform hooks.
- *
- */
-
-static void __flipper_quiesce(void __iomem *io_base)
-{
- /* mask and ack all IRQs */
- out_be32(io_base + FLIPPER_IMR, 0x00000000);
- out_be32(io_base + FLIPPER_ICR, 0xffffffff);
-}
-
-struct irq_domain * __init flipper_pic_init(struct device_node *np)
-{
- struct device_node *pi;
- struct irq_domain *irq_domain = NULL;
- struct resource res;
- void __iomem *io_base;
- int retval;
-
- pi = of_get_parent(np);
- if (!pi) {
- pr_err("no parent found\n");
- goto out;
- }
- if (!of_device_is_compatible(pi, "nintendo,flipper-pi")) {
- pr_err("unexpected parent compatible\n");
- goto out;
- }
-
- retval = of_address_to_resource(pi, 0, &res);
- if (retval) {
- pr_err("no io memory range found\n");
- goto out;
- }
- io_base = ioremap(res.start, resource_size(&res));
-
- pr_info("controller at 0x%08x mapped to 0x%p\n", res.start, io_base);
-
- __flipper_quiesce(io_base);
-
- irq_domain = irq_domain_add_linear(np, FLIPPER_NR_IRQS,
- &flipper_irq_domain_ops, io_base);
- if (!irq_domain) {
- pr_err("failed to allocate irq_domain\n");
- return NULL;
- }
-
-out:
- return irq_domain;
-}
-
-unsigned int flipper_pic_get_irq(void)
-{
- void __iomem *io_base = flipper_irq_host->host_data;
- int irq;
- u32 irq_status;
-
- irq_status = in_be32(io_base + FLIPPER_ICR) &
- in_be32(io_base + FLIPPER_IMR);
- if (irq_status == 0)
- return NO_IRQ; /* no more IRQs pending */
-
- irq = __ffs(irq_status);
- return irq_linear_revmap(flipper_irq_host, irq);
-}
-
-/*
- * Probe function.
- *
- */
-
-void __init flipper_pic_probe(void)
-{
- struct device_node *np;
-
- np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-pic");
- BUG_ON(!np);
-
- flipper_irq_host = flipper_pic_init(np);
- BUG_ON(!flipper_irq_host);
-
- irq_set_default_host(flipper_irq_host);
-
- of_node_put(np);
-}
-
-/*
- * Misc functions related to the flipper chipset.
- *
- */
-
-/**
- * flipper_quiesce() - quiesce flipper irq controller
- *
- * Mask and ack all interrupt sources.
- *
- */
-void flipper_quiesce(void)
-{
- void __iomem *io_base = flipper_irq_host->host_data;
-
- __flipper_quiesce(io_base);
-}
-
-/*
- * Resets the platform.
- */
-void flipper_platform_reset(void)
-{
- void __iomem *io_base;
-
- if (flipper_irq_host && flipper_irq_host->host_data) {
- io_base = flipper_irq_host->host_data;
- out_8(io_base + FLIPPER_RESET, 0x00);
- }
-}
-
-/*
- * Returns non-zero if the reset button is pressed.
- */
-int flipper_is_reset_button_pressed(void)
-{
- void __iomem *io_base;
- u32 icr;
-
- if (flipper_irq_host && flipper_irq_host->host_data) {
- io_base = flipper_irq_host->host_data;
- icr = in_be32(io_base + FLIPPER_ICR);
- return !(icr & FLIPPER_ICR_RSS);
- }
- return 0;
-}
-