e8d36d5dbb
set_irq_flags is ARM specific with custom flags which have genirq equivalents. Convert drivers to use the genirq interfaces directly, so we can kill off set_irq_flags. The translation of flags is as follows: IRQF_VALID -> !IRQ_NOREQUEST IRQF_PROBE -> !IRQ_NOPROBE IRQF_NOAUTOEN -> IRQ_NOAUTOEN For IRQs managed by an irqdomain, the irqdomain core code handles clearing and setting IRQ_NOREQUEST already, so there is no need to do this in .map() functions and we can simply remove the set_irq_flags calls. Some users also modify IRQ_NOPROBE and this has been maintained although it is not clear that is really needed. There appears to be a great deal of blind copy and paste of this code. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Sekhar Nori <nsekhar@ti.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Gregory Clement <gregory.clement@free-electrons.com> Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Imre Kaloz <kaloz@openwrt.org> Acked-by: Krzysztof Halasa <khalasa@piap.pl> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Roland Stigge <stigge@antcom.de> Cc: Tony Lindgren <tony@atomide.com> Cc: Daniel Mack <daniel@zonque.org> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Simtec Linux Team <linux@simtec.co.uk> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-omap@vger.kernel.org Cc: linux-samsung-soc@vger.kernel.org Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
105 lines
3 KiB
C
105 lines
3 KiB
C
/*
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* Interrupt routines for Gemini
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*
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* Copyright (C) 2001-2006 Storlink, Corp.
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* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/stddef.h>
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#include <linux/list.h>
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#include <linux/sched.h>
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#include <linux/cpu.h>
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#include <asm/irq.h>
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#include <asm/mach/irq.h>
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#include <asm/system_misc.h>
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#include <mach/hardware.h>
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#define IRQ_SOURCE(base_addr) (base_addr + 0x00)
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#define IRQ_MASK(base_addr) (base_addr + 0x04)
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#define IRQ_CLEAR(base_addr) (base_addr + 0x08)
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#define IRQ_TMODE(base_addr) (base_addr + 0x0C)
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#define IRQ_TLEVEL(base_addr) (base_addr + 0x10)
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#define IRQ_STATUS(base_addr) (base_addr + 0x14)
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#define FIQ_SOURCE(base_addr) (base_addr + 0x20)
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#define FIQ_MASK(base_addr) (base_addr + 0x24)
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#define FIQ_CLEAR(base_addr) (base_addr + 0x28)
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#define FIQ_TMODE(base_addr) (base_addr + 0x2C)
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#define FIQ_LEVEL(base_addr) (base_addr + 0x30)
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#define FIQ_STATUS(base_addr) (base_addr + 0x34)
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static void gemini_ack_irq(struct irq_data *d)
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{
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__raw_writel(1 << d->irq, IRQ_CLEAR(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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}
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static void gemini_mask_irq(struct irq_data *d)
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{
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unsigned int mask;
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mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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mask &= ~(1 << d->irq);
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__raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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}
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static void gemini_unmask_irq(struct irq_data *d)
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{
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unsigned int mask;
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mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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mask |= (1 << d->irq);
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__raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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}
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static struct irq_chip gemini_irq_chip = {
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.name = "INTC",
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.irq_ack = gemini_ack_irq,
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.irq_mask = gemini_mask_irq,
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.irq_unmask = gemini_unmask_irq,
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};
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static struct resource irq_resource = {
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.name = "irq_handler",
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.start = GEMINI_INTERRUPT_BASE,
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.end = FIQ_STATUS(GEMINI_INTERRUPT_BASE) + 4,
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};
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void __init gemini_init_irq(void)
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{
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unsigned int i, mode = 0, level = 0;
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/*
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* Disable the idle handler by default since it is buggy
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* For more info see arch/arm/mach-gemini/idle.c
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*/
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cpu_idle_poll_ctrl(true);
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request_resource(&iomem_resource, &irq_resource);
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for (i = 0; i < NR_IRQS; i++) {
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irq_set_chip(i, &gemini_irq_chip);
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if((i >= IRQ_TIMER1 && i <= IRQ_TIMER3) || (i >= IRQ_SERIRQ0 && i <= IRQ_SERIRQ1)) {
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irq_set_handler(i, handle_edge_irq);
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mode |= 1 << i;
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level |= 1 << i;
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} else {
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irq_set_handler(i, handle_level_irq);
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}
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irq_clear_status_flags(i, IRQ_NOREQUEST | IRQ_NOPROBE);
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}
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/* Disable all interrupts */
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__raw_writel(0, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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__raw_writel(0, FIQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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/* Set interrupt mode */
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__raw_writel(mode, IRQ_TMODE(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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__raw_writel(level, IRQ_TLEVEL(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
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}
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