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+/*
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+ * Support for the Arcom ZEUS.
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+ *
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+ * Copyright (C) 2006 Arcom Control Systems Ltd.
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+ *
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+ * Loosely based on Arcom's 2.6.16.28.
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+ * Maintained by Marc Zyngier <maz@misterjones.org>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#include <linux/cpufreq.h>
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+#include <linux/interrupt.h>
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+#include <linux/irq.h>
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+#include <linux/pm.h>
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+#include <linux/gpio.h>
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+#include <linux/serial_8250.h>
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+#include <linux/dm9000.h>
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+#include <linux/mmc/host.h>
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+#include <linux/spi/spi.h>
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+#include <linux/spi/pxa2xx_spi.h>
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+#include <linux/mtd/mtd.h>
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+#include <linux/mtd/partitions.h>
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+#include <linux/mtd/physmap.h>
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+#include <linux/i2c.h>
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+#include <linux/i2c/pxa-i2c.h>
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+#include <linux/i2c/pca953x.h>
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+#include <linux/apm-emulation.h>
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+#include <linux/can/platform/mcp251x.h>
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+
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+#include <asm/mach-types.h>
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+#include <asm/suspend.h>
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+#include <asm/system_info.h>
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+#include <asm/mach/arch.h>
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+#include <asm/mach/map.h>
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+
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+#include <mach/pxa27x.h>
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+#include <mach/regs-uart.h>
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+#include <linux/platform_data/usb-ohci-pxa27x.h>
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+#include <linux/platform_data/mmc-pxamci.h>
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+#include <mach/pxa27x-udc.h>
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+#include <mach/udc.h>
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+#include <linux/platform_data/video-pxafb.h>
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+#include <mach/pm.h>
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+#include <mach/audio.h>
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+#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
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+#include <mach/zeus.h>
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+#include <mach/smemc.h>
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+
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+#include "generic.h"
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+
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+/*
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+ * Interrupt handling
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+ */
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+
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+static unsigned long zeus_irq_enabled_mask;
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+static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
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+static const int zeus_isa_irq_map[] = {
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+ 0, /* ISA irq #0, invalid */
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+ 0, /* ISA irq #1, invalid */
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+ 0, /* ISA irq #2, invalid */
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+ 1 << 0, /* ISA irq #3 */
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+ 1 << 1, /* ISA irq #4 */
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+ 1 << 2, /* ISA irq #5 */
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+ 1 << 3, /* ISA irq #6 */
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+ 1 << 4, /* ISA irq #7 */
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+ 0, /* ISA irq #8, invalid */
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+ 0, /* ISA irq #9, invalid */
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+ 1 << 5, /* ISA irq #10 */
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+ 1 << 6, /* ISA irq #11 */
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+ 1 << 7, /* ISA irq #12 */
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+};
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+
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+static inline int zeus_irq_to_bitmask(unsigned int irq)
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+{
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+ return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
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+}
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+
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+static inline int zeus_bit_to_irq(int bit)
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+{
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+ return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
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+}
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+
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+static void zeus_ack_irq(struct irq_data *d)
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+{
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+ __raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
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+}
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+
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+static void zeus_mask_irq(struct irq_data *d)
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+{
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+ zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
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+}
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+
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+static void zeus_unmask_irq(struct irq_data *d)
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+{
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+ zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
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+}
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+
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+static inline unsigned long zeus_irq_pending(void)
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+{
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+ return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
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+}
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+
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+static void zeus_irq_handler(unsigned int irq, struct irq_desc *desc)
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+{
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+ unsigned long pending;
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+
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+ pending = zeus_irq_pending();
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+ do {
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+ /* we're in a chained irq handler,
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+ * so ack the interrupt by hand */
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+ desc->irq_data.chip->irq_ack(&desc->irq_data);
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+
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+ if (likely(pending)) {
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+ irq = zeus_bit_to_irq(__ffs(pending));
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+ generic_handle_irq(irq);
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+ }
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+ pending = zeus_irq_pending();
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+ } while (pending);
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+}
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+
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+static struct irq_chip zeus_irq_chip = {
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+ .name = "ISA",
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+ .irq_ack = zeus_ack_irq,
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+ .irq_mask = zeus_mask_irq,
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+ .irq_unmask = zeus_unmask_irq,
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+};
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+
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+static void __init zeus_init_irq(void)
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+{
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+ int level;
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+ int isa_irq;
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+
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+ pxa27x_init_irq();
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+
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+ /* Peripheral IRQs. It would be nice to move those inside driver
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+ configuration, but it is not supported at the moment. */
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+ irq_set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING);
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+ irq_set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING);
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+ irq_set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING);
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+ irq_set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),
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