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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 12:20:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 12:20:00 -0700
commite8a0b37d28ace440776c0a4fe3c65f5832a9a7ee (patch)
tree9475608c22849e5039d4dc00d3f8e3a30eeac2b9 /arch/arm/mach-sa1100
parentabea9629486cf973369a641e190e739b3010bb03 (diff)
parent002af195a8c720ca47c7884fd0390f3b327423b9 (diff)
downloadlinux-linaro-stable-e8a0b37d28ace440776c0a4fe3c65f5832a9a7ee.tar.gz
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King: "Bigger items included in this update are: - A series of updates from Arnd for ARM randconfig build failures - Updates from Dmitry for StrongARM SA-1100 to move IRQ handling to drivers/irqchip/ - Move ARMs SP804 timer to drivers/clocksource/ - Perf updates from Mark Rutland in preparation to move the ARM perf code into drivers/ so it can be shared with ARM64. - MCPM updates from Nicolas - Add support for taking platform serial number from DT - Re-implement Keystone2 physical address space switch to conform to architecture requirements - Clean up ARMv7 LPAE code, which goes in hand with the Keystone2 changes. - L2C cleanups to avoid unlocking caches if we're prevented by the secure support to unlock. - Avoid cleaning a potentially dirty cache containing stale data on CPU initialisation - Add ARM-only entry point for secondary startup (for machines that can only call into a Thumb kernel in ARM mode). Same thing is also done for the resume entry point. - Provide arch_irqs_disabled via asm-generic - Enlarge ARMv7M vector table - Always use BFD linker for VDSO, as gold doesn't accept some of the options we need. - Fix an incorrect BSYM (for Thumb symbols) usage, and convert all BSYM compiler macros to a "badr" (for branch address). - Shut up compiler warnings provoked by our cmpxchg() implementation. - Ensure bad xchg sizes fail to link" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (75 commits) ARM: Fix build if CLKDEV_LOOKUP is not configured ARM: fix new BSYM() usage introduced via for-arm-soc branch ARM: 8383/1: nommu: avoid deprecated source register on mov ARM: 8391/1: l2c: add options to overwrite prefetching behavior ARM: 8390/1: irqflags: Get arch_irqs_disabled from asm-generic ARM: 8387/1: arm/mm/dma-mapping.c: Add arm_coherent_dma_mmap ARM: 8388/1: tcm: Don't crash when TCM banks are protected by TrustZone ARM: 8384/1: VDSO: force use of BFD linker ARM: 8385/1: VDSO: group link options ARM: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations ARM: remove __bad_xchg definition ARM: 8369/1: ARMv7M: define size of vector table for Vybrid ARM: 8382/1: clocksource: make ARM_TIMER_SP804 depend on GENERIC_SCHED_CLOCK ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource ARM: 8365/1: introduce sp804_timer_disable and remove arm_timer.h inclusion ARM: 8364/1: fix BE32 module loading ARM: 8360/1: add secondary_startup_arm prototype in header file ARM: 8359/1: correct secondary_startup_arm mode ARM: proc-v7: sanitise and document registers around errata ARM: proc-v7: clean up MIDR access ...
Diffstat (limited to 'arch/arm/mach-sa1100')
-rw-r--r--arch/arm/mach-sa1100/Makefile2
-rw-r--r--arch/arm/mach-sa1100/generic.c37
-rw-r--r--arch/arm/mach-sa1100/irq.c178
3 files changed, 38 insertions, 179 deletions
diff --git a/arch/arm/mach-sa1100/Makefile b/arch/arm/mach-sa1100/Makefile
index 61ff91e76e0a..ebc4d58e1a32 100644
--- a/arch/arm/mach-sa1100/Makefile
+++ b/arch/arm/mach-sa1100/Makefile
@@ -3,7 +3,7 @@
#
# Common support
-obj-y := clock.o generic.o irq.o #nmi-oopser.o
+obj-y := clock.o generic.o #nmi-oopser.o
# Specific board support
obj-$(CONFIG_SA1100_ASSABET) += assabet.o
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index 40e0d8619a2d..345e63f4eb71 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -20,9 +20,12 @@
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
+#include <linux/irqchip/irq-sa11x0.h>
#include <video/sa1100fb.h>
+#include <soc/sa1100/pwer.h>
+
#include <asm/div64.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>
@@ -375,6 +378,18 @@ void __init sa1100_timer_init(void)
pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x90000000), 3686400);
}
+static struct resource irq_resource =
+ DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs");
+
+void __init sa1100_init_irq(void)
+{
+ request_resource(&iomem_resource, &irq_resource);
+
+ sa11x0_init_irq_nodt(IRQ_GPIO0_SC, irq_resource.start);
+
+ sa1100_init_gpio();
+}
+
/*
* Disable the memory bus request/grant signals on the SA1110 to
* ensure that we don't receive spurious memory requests. We set
@@ -416,3 +431,25 @@ void sa1110_mb_enable(void)
local_irq_restore(flags);
}
+int sa11x0_gpio_set_wake(unsigned int gpio, unsigned int on)
+{
+ if (on)
+ PWER |= BIT(gpio);
+ else
+ PWER &= ~BIT(gpio);
+
+ return 0;
+}
+
+int sa11x0_sc_set_wake(unsigned int irq, unsigned int on)
+{
+ if (BIT(irq) != IC_RTCAlrm)
+ return -EINVAL;
+
+ if (on)
+ PWER |= PWER_RTC;
+ else
+ PWER &= ~PWER_RTC;
+
+ return 0;
+}
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
deleted file mode 100644
index 65aebfa66fe5..000000000000
--- a/arch/arm/mach-sa1100/irq.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * linux/arch/arm/mach-sa1100/irq.c
- *
- * Copyright (C) 1999-2001 Nicolas Pitre
- *
- * Generic IRQ handling for the SA11x0, GPIO 11-27 IRQ demultiplexing.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/ioport.h>
-#include <linux/syscore_ops.h>
-
-#include <mach/hardware.h>
-#include <mach/irqs.h>
-#include <asm/mach/irq.h>
-#include <asm/exception.h>
-
-#include "generic.h"
-
-
-/*
- * We don't need to ACK IRQs on the SA1100 unless they're GPIOs
- * this is for internal IRQs i.e. from IRQ LCD to RTCAlrm.
- */
-static void sa1100_mask_irq(struct irq_data *d)
-{
- ICMR &= ~BIT(d->hwirq);
-}
-
-static void sa1100_unmask_irq(struct irq_data *d)
-{
- ICMR |= BIT(d->hwirq);
-}
-
-/*
- * Apart form GPIOs, only the RTC alarm can be a wakeup event.
- */
-static int sa1100_set_wake(struct irq_data *d, unsigned int on)
-{
- if (BIT(d->hwirq) == IC_RTCAlrm) {
- if (on)
- PWER |= PWER_RTC;
- else
- PWER &= ~PWER_RTC;
- return 0;
- }
- return -EINVAL;
-}
-
-static struct irq_chip sa1100_normal_chip = {
- .name = "SC",
- .irq_ack = sa1100_mask_irq,
- .irq_mask = sa1100_mask_irq,
- .irq_unmask = sa1100_unmask_irq,
- .irq_set_wake = sa1100_set_wake,
-};
-
-static int sa1100_normal_irqdomain_map(struct irq_domain *d,
- unsigned int irq, irq_hw_number_t hwirq)
-{
- irq_set_chip_and_handler(irq, &sa1100_normal_chip,
- handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
-
- return 0;
-}
-
-static struct irq_domain_ops sa1100_normal_irqdomain_ops = {
- .map = sa1100_normal_irqdomain_map,
- .xlate = irq_domain_xlate_onetwocell,
-};
-
-static struct irq_domain *sa1100_normal_irqdomain;
-
-static struct resource irq_resource =
- DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs");
-
-static struct sa1100irq_state {
- unsigned int saved;
- unsigned int icmr;
- unsigned int iclr;
- unsigned int iccr;
-} sa1100irq_state;
-
-static int sa1100irq_suspend(void)
-{
- struct sa1100irq_state *st = &sa1100irq_state;
-
- st->saved = 1;
- st->icmr = ICMR;
- st->iclr = ICLR;
- st->iccr = ICCR;
-
- /*
- * Disable all GPIO-based interrupts.
- */
- ICMR &= ~(IC_GPIO11_27|IC_GPIO10|IC_GPIO9|IC_GPIO8|IC_GPIO7|
- IC_GPIO6|IC_GPIO5|IC_GPIO4|IC_GPIO3|IC_GPIO2|
- IC_GPIO1|IC_GPIO0);
-
- return 0;
-}
-
-static void sa1100irq_resume(void)
-{
- struct sa1100irq_state *st = &sa1100irq_state;
-
- if (st->saved) {
- ICCR = st->iccr;
- ICLR = st->iclr;
-
- ICMR = st->icmr;
- }
-}
-
-static struct syscore_ops sa1100irq_syscore_ops = {
- .suspend = sa1100irq_suspend,
- .resume = sa1100irq_resume,
-};
-
-static int __init sa1100irq_init_devicefs(void)
-{
- register_syscore_ops(&sa1100irq_syscore_ops);
- return 0;
-}
-
-device_initcall(sa1100irq_init_devicefs);
-
-static asmlinkage void __exception_irq_entry
-sa1100_handle_irq(struct pt_regs *regs)
-{
- uint32_t icip, icmr, mask;
-
- do {
- icip = (ICIP);
- icmr = (ICMR);
- mask = icip & icmr;
-
- if (mask == 0)
- break;
-
- handle_domain_irq(sa1100_normal_irqdomain,
- ffs(mask) - 1, regs);
- } while (1);
-}
-
-void __init sa1100_init_irq(void)
-{
- request_resource(&iomem_resource, &irq_resource);
-
- /* disable all IRQs */
- ICMR = 0;
-
- /* all IRQs are IRQ, not FIQ */
- ICLR = 0;
-
- /*
- * Whatever the doc says, this has to be set for the wait-on-irq
- * instruction to work... on a SA1100 rev 9 at least.
- */
- ICCR = 1;
-
- sa1100_normal_irqdomain = irq_domain_add_simple(NULL,
- 32, IRQ_GPIO0_SC,
- &sa1100_normal_irqdomain_ops, NULL);
-
- set_handle_irq(sa1100_handle_irq);
-
- sa1100_init_gpio();
-}