diff options
author | Arnd Bergmann <arnd@arndb.de> | 2019-09-02 17:47:55 +0200 |
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committer | Krzysztof Kozlowski <krzk@kernel.org> | 2020-08-20 21:00:15 +0200 |
commit | 71b9114d2c13a648fbe6523dd859e611c316ad90 (patch) | |
tree | c380a723099f776736779319be913f8c0900989e /arch/arm/mach-s3c24xx/bast-irq.c | |
parent | a3814e55b411e8cdb352637c65925f60b9ac15cc (diff) |
ARM: s3c: move into a common directory
s3c24xx and s3c64xx have a lot in common, but are split across three
separate directories, which makes the interaction of the header files
more complicated than necessary.
Move all three directories into a new mach-s3c, with a minimal
set of changes to each file.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[krzk: Rebase, add s3c24xx and s3c64xx suffix to several files, add SPDX
headers to new files, remove plat-samsung from MAINTAINERS]
Co-developed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
https://lore.kernel.org/r/20200806182059.2431-39-krzk@kernel.org
Diffstat (limited to 'arch/arm/mach-s3c24xx/bast-irq.c')
-rw-r--r-- | arch/arm/mach-s3c24xx/bast-irq.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/arch/arm/mach-s3c24xx/bast-irq.c b/arch/arm/mach-s3c24xx/bast-irq.c deleted file mode 100644 index 141a35d58dd7..000000000000 --- a/arch/arm/mach-s3c24xx/bast-irq.c +++ /dev/null @@ -1,137 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -// -// Copyright 2003-2005 Simtec Electronics -// Ben Dooks <ben@simtec.co.uk> -// -// http://www.simtec.co.uk/products/EB2410ITX/ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/ioport.h> -#include <linux/device.h> -#include <linux/io.h> - -#include <asm/irq.h> -#include <asm/mach-types.h> -#include <asm/mach/irq.h> - -#include <mach/regs-irq.h> -#include <mach/irqs.h> - -#include "bast.h" - -#define irqdbf(x...) -#define irqdbf2(x...) - -/* handle PC104 ISA interrupts from the system CPLD */ - -/* table of ISA irq nos to the relevant mask... zero means - * the irq is not implemented -*/ -static const unsigned char bast_pc104_irqmasks[] = { - 0, /* 0 */ - 0, /* 1 */ - 0, /* 2 */ - 1, /* 3 */ - 0, /* 4 */ - 2, /* 5 */ - 0, /* 6 */ - 4, /* 7 */ - 0, /* 8 */ - 0, /* 9 */ - 8, /* 10 */ - 0, /* 11 */ - 0, /* 12 */ - 0, /* 13 */ - 0, /* 14 */ - 0, /* 15 */ -}; - -static const unsigned char bast_pc104_irqs[] = { 3, 5, 7, 10 }; - -static void -bast_pc104_mask(struct irq_data *data) -{ - unsigned long temp; - - temp = __raw_readb(BAST_VA_PC104_IRQMASK); - temp &= ~bast_pc104_irqmasks[data->irq]; - __raw_writeb(temp, BAST_VA_PC104_IRQMASK); -} - -static void -bast_pc104_maskack(struct irq_data *data) -{ - struct irq_desc *desc = irq_to_desc(BAST_IRQ_ISA); - - bast_pc104_mask(data); - desc->irq_data.chip->irq_ack(&desc->irq_data); -} - -static void -bast_pc104_unmask(struct irq_data *data) -{ - unsigned long temp; - - temp = __raw_readb(BAST_VA_PC104_IRQMASK); - temp |= bast_pc104_irqmasks[data->irq]; - __raw_writeb(temp, BAST_VA_PC104_IRQMASK); -} - -static struct irq_chip bast_pc104_chip = { - .irq_mask = bast_pc104_mask, - .irq_unmask = bast_pc104_unmask, - .irq_ack = bast_pc104_maskack -}; - -static void bast_irq_pc104_demux(struct irq_desc *desc) -{ - unsigned int stat; - unsigned int irqno; - int i; - - stat = __raw_readb(BAST_VA_PC104_IRQREQ) & 0xf; - - if (unlikely(stat == 0)) { - /* ack if we get an irq with nothing (ie, startup) */ - desc->irq_data.chip->irq_ack(&desc->irq_data); - } else { - /* handle the IRQ */ - - for (i = 0; stat != 0; i++, stat >>= 1) { - if (stat & 1) { - irqno = bast_pc104_irqs[i]; - generic_handle_irq(irqno); - } - } - } -} - -static __init int bast_irq_init(void) -{ - unsigned int i; - - if (machine_is_bast()) { - printk(KERN_INFO "BAST PC104 IRQ routing, Copyright 2005 Simtec Electronics\n"); - - /* zap all the IRQs */ - - __raw_writeb(0x0, BAST_VA_PC104_IRQMASK); - - irq_set_chained_handler(BAST_IRQ_ISA, bast_irq_pc104_demux); - - /* register our IRQs */ - - for (i = 0; i < 4; i++) { - unsigned int irqno = bast_pc104_irqs[i]; - - irq_set_chip_and_handler(irqno, &bast_pc104_chip, - handle_level_irq); - irq_clear_status_flags(irqno, IRQ_NOREQUEST); - } - } - - return 0; -} - -arch_initcall(bast_irq_init); |