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authorDavid Howells <dhowells@redhat.com>2018-03-08 09:48:46 +0000
committerArnd Bergmann <arnd@arndb.de>2018-03-09 23:19:56 +0100
commit739d875dd6982618020d30f58f8acf10f6076e6d (patch)
tree13deb11d5b2078e49d4e5b6175e5846a22a04b95 /arch/mn10300/unit-asb2364/irq-fpga.c
parentb67aea2bbab780e412b8af3386cc9f78f61a4cac (diff)
mn10300: Remove the architecture
Remove the MN10300 arch as the hardware is defunct. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David Howells <dhowells@redhat.com> cc: Masahiro Yamada <yamada.masahiro@socionext.com> cc: linux-am33-list@redhat.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/mn10300/unit-asb2364/irq-fpga.c')
-rw-r--r--arch/mn10300/unit-asb2364/irq-fpga.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/arch/mn10300/unit-asb2364/irq-fpga.c b/arch/mn10300/unit-asb2364/irq-fpga.c
deleted file mode 100644
index 073e2ccc4a44..000000000000
--- a/arch/mn10300/unit-asb2364/irq-fpga.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/* ASB2364 FPGA interrupt multiplexing
- *
- * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <unit/fpga-regs.h>
-
-/*
- * FPGA PIC operations
- */
-static void asb2364_fpga_mask(struct irq_data *d)
-{
- ASB2364_FPGA_REG_MASK(d->irq - NR_CPU_IRQS) = 0x0001;
- SyncExBus();
-}
-
-static void asb2364_fpga_ack(struct irq_data *d)
-{
- ASB2364_FPGA_REG_IRQ(d->irq - NR_CPU_IRQS) = 0x0001;
- SyncExBus();
-}
-
-static void asb2364_fpga_mask_ack(struct irq_data *d)
-{
- ASB2364_FPGA_REG_MASK(d->irq - NR_CPU_IRQS) = 0x0001;
- SyncExBus();
- ASB2364_FPGA_REG_IRQ(d->irq - NR_CPU_IRQS) = 0x0001;
- SyncExBus();
-}
-
-static void asb2364_fpga_unmask(struct irq_data *d)
-{
- ASB2364_FPGA_REG_MASK(d->irq - NR_CPU_IRQS) = 0x0000;
- SyncExBus();
-}
-
-static struct irq_chip asb2364_fpga_pic = {
- .name = "fpga",
- .irq_ack = asb2364_fpga_ack,
- .irq_mask = asb2364_fpga_mask,
- .irq_mask_ack = asb2364_fpga_mask_ack,
- .irq_unmask = asb2364_fpga_unmask,
-};
-
-/*
- * FPGA PIC interrupt handler
- */
-static irqreturn_t fpga_interrupt(int irq, void *_mask)
-{
- if ((ASB2364_FPGA_REG_IRQ_LAN & 0x0001) != 0x0001)
- generic_handle_irq(FPGA_LAN_IRQ);
- if ((ASB2364_FPGA_REG_IRQ_UART & 0x0001) != 0x0001)
- generic_handle_irq(FPGA_UART_IRQ);
- if ((ASB2364_FPGA_REG_IRQ_I2C & 0x0001) != 0x0001)
- generic_handle_irq(FPGA_I2C_IRQ);
- if ((ASB2364_FPGA_REG_IRQ_USB & 0x0001) != 0x0001)
- generic_handle_irq(FPGA_USB_IRQ);
- if ((ASB2364_FPGA_REG_IRQ_FPGA & 0x0001) != 0x0001)
- generic_handle_irq(FPGA_FPGA_IRQ);
-
- return IRQ_HANDLED;
-}
-
-/*
- * Define an interrupt action for each FPGA PIC output
- */
-static struct irqaction fpga_irq[] = {
- [0] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga",
- },
-};
-
-/*
- * Initialise the FPGA's PIC
- */
-void __init irq_fpga_init(void)
-{
- int irq;
-
- ASB2364_FPGA_REG_MASK_LAN = 0x0001;
- SyncExBus();
- ASB2364_FPGA_REG_MASK_UART = 0x0001;
- SyncExBus();
- ASB2364_FPGA_REG_MASK_I2C = 0x0001;
- SyncExBus();
- ASB2364_FPGA_REG_MASK_USB = 0x0001;
- SyncExBus();
- ASB2364_FPGA_REG_MASK_FPGA = 0x0001;
- SyncExBus();
-
- for (irq = NR_CPU_IRQS; irq < NR_IRQS; irq++)
- irq_set_chip_and_handler(irq, &asb2364_fpga_pic,
- handle_level_irq);
-
- /* the FPGA drives the XIRQ1 input on the CPU PIC */
- setup_irq(XIRQ1, &fpga_irq[0]);
-}