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authorLinus Walleij <linus.walleij@linaro.org>2017-01-13 23:55:54 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-03-12 12:27:04 +0100
commitc12ddfe1ed41b59c3122b67a37195c085f9da9c6 (patch)
tree28698c2801ccc5d80010b0c59973d33b1657a990 /arch/arm/mach-gemini
parentLinux 4.11-rc1 (diff)
downloadlinux-c12ddfe1ed41b59c3122b67a37195c085f9da9c6.tar.xz
linux-c12ddfe1ed41b59c3122b67a37195c085f9da9c6.zip
ARM: gemini: convert to MULTI_IRQ_HANDLER
In order to enable device tree boot on this machine we must first convert it to runtime-manage its irq handler, so do this. Cc: Janos Laube <janos.dev@gmail.com> Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com> Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-gemini')
-rw-r--r--arch/arm/mach-gemini/include/mach/entry-macro.S33
-rw-r--r--arch/arm/mach-gemini/irq.c15
2 files changed, 15 insertions, 33 deletions
diff --git a/arch/arm/mach-gemini/include/mach/entry-macro.S b/arch/arm/mach-gemini/include/mach/entry-macro.S
deleted file mode 100644
index f044e430bfa4..000000000000
--- a/arch/arm/mach-gemini/include/mach/entry-macro.S
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Low-level IRQ helper macros for Gemini platform.
- *
- * Copyright (C) 2001-2006 Storlink, Corp.
- * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-#include <mach/hardware.h>
-
-#define IRQ_STATUS 0x14
-
- .macro get_irqnr_preamble, base, tmp
- .endm
-
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- ldr \irqstat, =IO_ADDRESS(GEMINI_INTERRUPT_BASE + IRQ_STATUS)
- ldr \irqnr, [\irqstat]
- cmp \irqnr, #0
- beq 2313f
- mov \tmp, \irqnr
- mov \irqnr, #0
-2312:
- tst \tmp, #1
- bne 2313f
- add \irqnr, \irqnr, #1
- mov \tmp, \tmp, lsr #1
- cmp \irqnr, #31
- bcc 2312b
-2313:
- .endm
diff --git a/arch/arm/mach-gemini/irq.c b/arch/arm/mach-gemini/irq.c
index d929b3ff18fd..37d52e372456 100644
--- a/arch/arm/mach-gemini/irq.c
+++ b/arch/arm/mach-gemini/irq.c
@@ -17,6 +17,7 @@
#include <linux/sched.h>
#include <linux/cpu.h>
+#include <asm/exception.h>
#include <asm/irq.h>
#include <asm/mach/irq.h>
#include <asm/system_misc.h>
@@ -65,6 +66,18 @@ static struct irq_chip gemini_irq_chip = {
.irq_unmask = gemini_unmask_irq,
};
+
+asmlinkage void __exception_irq_entry gemini_handle_irq(struct pt_regs *regs)
+{
+ int irq;
+ unsigned status;
+
+ while ((status = __raw_readl(IRQ_STATUS(IO_ADDRESS(GEMINI_INTERRUPT_BASE))))) {
+ irq = ffs(status) - 1;
+ handle_domain_irq(NULL, irq, regs);
+ }
+}
+
static struct resource irq_resource = {
.name = "irq_handler",
.start = GEMINI_INTERRUPT_BASE,
@@ -102,4 +115,6 @@ void __init gemini_init_irq(void)
/* Set interrupt mode */
__raw_writel(mode, IRQ_TMODE(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
__raw_writel(level, IRQ_TLEVEL(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
+
+ set_handle_irq(gemini_handle_irq);
}